Professional Malpractice (General) Consultants: 83

John D. O'Connor has more than 40 years of experience dealing with complex Attorney Fee Disputes. He is a member of the National Association of Legal Fee Analysis (NALFA) and is recognized as one of the top legal fee experts in the country.

Mr. O’Connor has tried over 70 cases in federal and state venues throughout the country, with highly enviable success in complex, contentious disputes. Retained by R.J. Reynolds Tobacco Company as trial counsel in key cases, he has achieved a pretrial dismissal in each concluded action. He has held the highest Martindale-Hubbell “AV” rating for over 25 years, and has consistently been named a “SuperLawyer” by his Northern California peers.

A former Federal Prosecutor, Mr. O’Connor was chosen lead outside counsel in certain S&L crisis litigation, defended a California Attorney General in campaign-related litigation, and successfully represented Golden State Warriors basketball Coach Don Nelson in significant contract claims.

Litigation Support - Since the advent in the late 1980’s of adversarial legal auditing, Mr. O’Connor has served extensively as an expert, litigator, and JAMS mediator throughout the country, analyzing audit criticisms, applying community standards, and construing applicable case law. Through written Declaration and oral testimony, he has consulted on hundreds of adversarial legal fee disputes over three decades. Mr. O'Connor's work has been widely lauded by clients, lawyers, courts, and arbitrators.

Areas of Attorney Fee Dispute Expertise:

• Billing Rates / Overbilling
• Litigation Efficiency
• Task Assignment and Staffing
• Prevailing Party Determination
• Litigation Skill

Armond Kotikian, DDS, MD, FACS, is double board certified in Oral and Maxillofacial Surgery. In the clinic setting, Dr. Kotikian routinely performs IV sedations for complex cases including:

Impacted Wisdom Teeth Dental Implants Bone Grafting Dento-alveolar Surgery

Reconstructive Jaw Surgery Facial Trauma Oral Pathology - Tumor Excisions Obstructive Sleep Apnea

Dr. Kotikian is focused on patient care. He has been an expert witness on over 125 malpractice cases, given depositions on over 65 cases and testified at court over the past seven years.  He has been retained on nerve injury cases, wrong tooth extraction cases, wrongful death/anesthesia complications, dental implant complications, head and neck infection cases, misdiagnosed pathology, jaw fracture due to extraction cases, TMJ and all aspects of the Oral and Maxillofacial Surgery. 

Dr. Kotikian routinely lectures on subjects related to his field at both the local and national level. Topics include his areas of specialization such as Oral and Maxillofacial Trauma, Infections, Oral Pathology Resection and Reconstruction, Treatment of Obstructive Sleep Apnea Patients (surgical and non-surgical), and Craniofacial Anomalies (orthognathic surgery / corrective jaw surgery).

Dr. Kotikian has been featured in the LA Times, Chicago Tribune, Glendale Newspress and many other local newspapers for his work in the field of Oral and Maxillofacial Surgery. He has also been featured on CNN Headline News local edition and the Diane Sawyer Nightly News on ABC.Dr. Kotikian is a member of numerous organizations, including the American Association of Oral and Maxillofacial Surgeons, California Association of Oral and Maxillofacial Surgeons, and the Southern California Orofacial Academy. 

View Dr. Kotikian's Expert Witness Profile.

Marcel O. Ponton, PhD, has over 25 years of experience in the field of Psychology. He specializes in the Neuropsychological Assessment and treatment of Traumatic Brain Injury patients and patients with Psychological Trauma.

Dr. Ponton continues to treat brain injury and trauma survivors in his private practice. He has extensive expertise in the assessment of Spanish-speaking patients. He is a published author, Associate Clinical Professor in the Department of Psychiatry at UCLA, and Adjunct Professor of Pastoral Counseling at Fuller Theological Seminary.

Litigation Support - Over the past 22 years he has served as an expert witness, Dr. Ponton has executed hundreds of evaluations and been retained for his expertise over 300 times. He has testified as an expert in court or before an arbitrator over 40 times. Dr. Ponton's services include neuropsychological assessments, psychological assessments, report writing, medical records review, consulting, and assessment of children and adults.

Areas of Expertise:

Forensic Neuropsychology Traumatic Brain Injury Brain Injury Rehabilitation Spinal Cord Injury Trauma Malingering Personal Injury

Post Traumatic Stress Disorder Psychology Dementia Sanity / Trial Competency Sexual Harassment Sexual Discrimination Handedness

The Physician Assistant Experts Network™ is a referral resource for attorneys seeking expert medical opinions on the standard of care provided by physician assistants and advanced nurse practitioners. The PA Experts Network™ was founded by Jeffrey G. Nicholson, PA-C, Ph.D., M.Ed., MPAS, an experienced medical-legal consultant and a leader in the physician assistant profession. He will either help you personally or facilitate a physician assistant expert from his network of board certified Physician Assistant Experts in all medical specialties. See his article on this website. Practicing 30 years, a PA Educator, Assistant Professor, and Director of the University of Wisconsin Physician Assistant Program.

Services Include:

• Medical Records Review, Deposition, Testimony, Referrals of PAs, NPs, Midwives, CRNAs, and allied health PT, EMT etc.

Education and Certifications:

• Ph.D., University of Wisconsin-Madison, WI, 2008
• Master of Education, M.Ed., Harvard University, Cambridge, MA, 1989
• Masters Degree in Physician Assistant Studies, University of Nebraska Click here for Website to see complete resume and photo.

Thomas J. Zaydon, MD, FACS,  is a Board Certified Plastic Surgeon with over 30 years of experience.. Dr. Zaydon is the founder of The Plastic Surgery Institute of Miami and is a recognized authority on Plastic and Reconstructive Surgery. During his tenure, he continues to work in the emergency room, providing surgical evaluations and performing procedures on patients who need traumatic care.

Dr. Zaydon is certified by the American Board of Plastic Surgery, is a member of the American Society of Plastic Surgeons, and a Fellow of the American College of Surgeons. He has authored numerous articles and chapters on various aspects of plastic surgery. 

Litigation Support - Dr. Zaydon serves as a plastic surgery expert witness on liability cases around the country. He has had the opportunity to work both with defense and plaintiff attorneys. He is a certified expert witness in the field of plastic surgery for the State of Florida. He works for both plaintiff and defense attorneys.

Dr. Zaydon can provide factual synthesis regarding plastic surgery management. As part of his expertise, he navigates medical records and understands procedural terminology. On request, he has prepared numerous comprehensive plastic surgery examinations in conjunction with depositions, trial testimony, and legal documents.

Video: Plastic Surgeon As Expert Witness: How to Choose Your Expert Witness - A Guide for Lawyers

Areas of Expertise:

Plastic Surgery Burn Reconstructive Surgery Breast Augmentation Breast Reduction Facelift Blephroplasty

Nasal Reconstruction Abdominoplasty Body Contouring Burn Patient Workers Compensation Peer Reviews IMEs / EMAs

Ray S. Kim, Ph.D., is a Clinical Psychologist focused on providing individual, couples, and family therapy, as well as Forensic Evaluations for adults and juveniles. Areas of Consultation:

Depression Anxiety Disorders Child and Adolescent Issues Relationship Problems

Substance Abuse Psychological Evaluations Sex Offender Evaluations Violence Risk Assessments

Dr. Kim is currently the Director of Chicago Metropolitan Forensic Services at the Illinois Department of Human Services where he supervises a team of clinical psychologists and social workers who evaluate the placement of individuals into forensic facilities. He also serves as the Director of Clinical Training at Chicago Metropolitan Forensic Services where he developed and supervises a forensic practicum program which provides opportunities for specialized clinical training in the area of forensic psychology. 

Dr. Kim was one of the first psychologists trained by the Illinois Department of Human Services to evaluate sex offenders for sexual dangerousness under the Sexually Violent Persons Commitment Act. He is also among the first to be certified as a Licensed Sex Offender Evaluator and Licensed Sex Offender Treatment Provider in Illinois. 

Certifications - Licensed Clinical Psychologist, Board Certified Forensic Psychologist, Licensed Sex Offender Evaluator, Licensed Sex Offender Treatment Provider, Board Registered Mental Illness/Substance Abuse Provider, Fellow of the American College of Forensic Examiners Institute, Fellow of the American College of Advanced Practice Psychologists, Diplomate of the American Psychotherapy Association, Diplomate of the American Board of Psychological Specialties, National Register of Health Service Psychologists. www.experts.com

View Dr. Kim's Expert Witness Profile.

Rieser Building Group is a leading builder, engineer, architect, and forensic team with over 25 years of experience in management, design, and construction of over 4,000 units. These units range from custom homes, commercial buildings, and developments, to public works like Caltrans and BART construction, and roadway improvements (over 500 miles). With a full breadth of professional development services, they manage all aspects of a project, from entitlements to design to warranty.

Building Services - Design in-house, or, as licensed engineering and construction professionals, Rieser Building Group can manage an outside team of architects, civil engineers, structural engineers, and landscape architects.

Engineering and Design Services - Spearheaded by a professional Engineering & Architectural team, Rieser provides innovative designs and timely approvals in custom homes, commercial buildings, apartments, large developments, structures, topo-mapping, hydraulics, traffic engineering, and transportation engineering.

Development Services - Developing single custom-built home or a multiphase project, Rieser will expedite the development process, establish a joint venture to share costs, or purchase the project. In addition to flexible management, they conduct property feasibility studies to calculate the right mix of homes and maximize ROI. 

Mark E. Rieser, II, MS, PE, AIA, GBC, GEC, has over 30 years of experience in the Construction and Building Design industry. He provides his clients with a comprehensive knowledge of Construction Technology and Construction Standards of Professional Practice. Background Experience - President of an active Design / Build company, Mr. Rieser has managed, designed, and constructed over 4,000 units to include high-rise, single family homes, condominiums, townhomes, podiums, apartments, and commercial buildings, His experience includes construction, management, and design of over 500 miles of asphalt and roadway improvements, tunnels, San Francisco Airport, Santa Clara Light Rail, Southern Pacific Railroad, Caltrain, and BART. Mr. Rieser has an insightful understanding of Civil / Structural Engineering, Soil Engineering, Transportation / Traffic Engineering, Hydraulic Engineering, Architectural Design, Asphalt Design, Cost Estimation, Public Works Design Bidding and Estimation, General Engineering, General Building, and an Accident Reconstruction expert.

NorCal Headquarters San Jose Office 2033 Gateway Pl Suite 500 San Jose, CA 95110	San Francisco Office 425 Market St Suite 2200 San Francisco, CA 94105	SoCal Headquarters Los Angeles Office 10100 Santa Monica Blvd. Suite 300 Los Angeles, CA 90067	Sacramento Office 777 Campus Commons Rd Suite 200 Sacramento, CA 95825

View Mark Rieser's Expert Witness Profile.

Sandman Legal P.C. is the only law firm with a focus on the needs of the expert witness community. Their founder is a practicing attorney, licensed to practice law in California and Illinois, with 20 years of legal experience and a deep understanding of the expert witness and medical expert witness industry. After nearly a decade of experience in multiple executive leadership capacities, including five years as president for the nation's leading medical expert witness consulting firm, he left to pursue his long-time goal and launched Sandman Legal P.C., a provider of legal and dispute resolution services to the expert witness community and beyond.

Consulting Services for Expert Witnesses:

• Contract Review and Drafting
• Fee Schedule Review and Drafting
• Resolution of Disputes Specific to the Expert Witness Industry
• Insurance Policy Review and Consulting
• General Counsel Services

Dan Sandman, Esq., is an attorney, business executive, and founder of Sandman Legal P.C. He is respected for his education, experience, and commitment to his clients. Dan is energized by empowering individuals and teams, developing successful operational models, maximizing client relationships, and delivering unsurpassed business growth for individuals and legal services organizations in the expert witness space. Dan possesses a blend of experience working to grow private equity-backed companies, public service organizations, and individually owned businesses.

Dan's business leadership includes a focus on building coalitions with administrative agencies, increasing visibility for public campaigns, and advising individuals and executive teams on business and legal issues to mitigate risk. Additionally, he has held several board leadership positions and related affiliations in the legal profession and in the public sector.

Medical Expert Witness Retainers, Contracts, and Insurance with Dan Sandman, Esq - PGD

Most recently, Dan furthered his legal education at the Straus Institute for Dispute Resolution, Caruso School of Law at Pepperdine University. He successfully completed the certificate program entitled Mediating the Litigated Case, the number one mediation program in the nation. Dan's focus as a certified mediator is on business disputes, personal injury matters, employment cases, medical malpractice, and community-based issues.

Sanjay Adhia, MD, MRO, is triple-Board-Certified in Psychiatry, Brain Injury Medicine and Forensic Psychiatry. In addition to forensic/expert witness practice, Dr. Adhia has provided patient care in the Houston area. Currently, he is a neuropsychiatrist at Memorial Herman TIRR where he treats those with brain injury, stroke, and other neurological injuries. His forensic practice focuses on the psychiatric impact of personal injury, medical malpractice, drug and alcohol abuse, sexual abuse, competency, violence, and complicating mental illness, as well as psychiatric disability. 

Dr. Adhia is among one of the few Forensic Psychiatrists who is also Board-Certified in Brain Injury Medicine. Often, Traumatic Brain Injury (TBI) can be a major factor in litigation as it can result in psychiatric or neurocognitive impairments. He has expertise in psychopharmacology, the medicine of medication. 

In addition, Dr. Adhia works with Physicians for Human Rights to assess victims of kidnapping and false imprisonment, human trafficking, undue influence, physical and sexual abuse, rape, and fear of imminent death. In all populations, he assesses PTSD, Anxiety, Depressive Disorders, risk of suicide, and malingering. He is experienced in the treatment and impact of drug and alcohol abuse on decision-making. Dr. Adhia has also treated severe psychosis (Schizophrenia, hallucinations) and psychopathology. Dr. Adhia was formerly treating patients at a Maximum Security Prison and prison psychiatric hospital. He has treated Opioid Use Disorders. 

Dr. Adhia’s findings consider complicating factors, such as emotional distress worsened by other active physical and mental conditions. Other factors are pre-existing mental and physical illness, competency and capacity (e.g. dementia, Intellectual Disability.) As a physician, Dr. Adhia is uniquely qualified to review medical records and doctor reports. Institutional medicine, medical malpractice, and standard of care apply to both public and private facilities, including government, regulated correctional institutions, and psychiatric hospitals. Dr. Adhia is skilled in these med-legal issues. He conducts Independent Medical Examinations, review of records, and reports his med-legal findings and opinions. He is available to testify in civil, criminal, probate, Federal, Immigration, military, and administrative jurisdictions.

Sasse Surgical Associates, PC is Northern Nevada’s premier provider of minimally invasive surgical solutions. Dr. Sasse is a nationally recognized expert in bariatric surgery, colorectal surgery, minimally invasive hernia and gallbladder surgery, and regenerative wound healing. 

Areas of Expertise:

Bariatric Surgery Gastric Sleeve Gastric Bypass Adjustable Band Gastric Balloon Bariatric Surgery Revision

Colorectal Surgery Gallbladder Surgery da Vinci Robotic Single Site Surgery Hernia Surgery Medically Supervised Weight Loss Regenerative Wound Care

Founder and Medical Director, Kent C. Sasse, MD, MPH, FACS, FASCRS, FASMBS, is certified by the American Board of Colon and Rectal Surgery, American Board of Surgery, and the American Society for Metabolic & Bariatric Surgery. 

Dr. Sasse performed the first laparoscopic colon resection procedure and the first laparoscopic gastric bypass procedure in northern Nevada more than 14 years ago. More recently, he is credited with performing the first daVinci Single Site gallbladder procedure in late 2013. 

With over 20 years of experience, Dr. Sasse is a sought after speaker and mentor to surgeons around the nation. He hosts cadaver courses on surgical topics including complex abdominal wall reconstruction at the University of Nevada School of Medicine, for visiting surgeons. He has also authored numerous peer-reviewed research articles, and some of his most recent papers discuss sleeve gastrectomy, laparoscopic rectopexy, gastric physiology, endoscopic techniques for gastric repairs, and minimally invasive hernia repair. He is an acclaimed award-winning author of five books www.SasseSurgical.com/books.

View Dr. Sasse's Expert Witness Profile.

Sidney P. Blum, CPA, CFE, CPEA, CFF has 30 years of professional and testifying expert experience in the areas of Royalty Auditing, Forensic Accounting, Intellectual Property Economic Damages, and General Economic Damages. Mr. Blum was named California CPA of the Year (2017) and Certified Fraud Examiner of the Year (2012). He is a Certified Fraud Examiner, Certified Professional Environmental Auditor, and Certified in Financial Forensics by the AICPA. Mr. Blum was a KPMG Partner. He specializes in breach of contract, lost revenues, patent infringement, copyright infringement, trademark infringement, lost pay, and wrongful termination.

As a world leading royalty auditor, Mr. Blum has extensive knowledge of the Georgia-Pacific factors and other major influences on reasonable royalty rates for intellectual property litigation. He led the national royalty audit practices for Big 4 firms Ernst & Young and KPMG and he also wrote the global methodologies for both firms. He is one of 5 members of the Board of Regents with the 80,000 member Association of Certified Fraud Examiners. 

Clients: Mr. Blum's clients have included Adobe, Amgen, Beats Electronics, DGA, Disney, Dolby, DTS, DKNY, Ed Hardy, General Electric, General Motors, IGT, IMG, Marvel, Mattel, McDonalds, Microsoft, MLB, WWE, UMB Bank, Steven Spielberg, Harley-Davidson, and the NFL.  Expert witness testimony on royalty audit standards and results. 

Industries:  Many industries such as medical devices, music, toys, energy, film, consumer products, electronics, apparel, automotive, manufacturing and biotech.

Consulting Services:

Desk Audits and Field Audits Forensic Accounting and Investigative Audits Royalty Reporting / System Audits

Evaluation of License Agreements Royalty Compliance and Monitoring Programs Royalty Compliance / Monitoring Program Reviews

Mr. Blum’s two books published by Oxford University Press and LexisNexis on financial terms in contracts are leading sources of valuable information for attorneys and contract negotiators. He has also made numerous presentations to law firms, professional groups, universities, and others regarding contract compliance and auditing.

View Sidney Blum's Expert Witness Profile.

Paul W. Burkett, JD, CPCU, CIC, ARM,CRM, ALCM, has been CEO of Snoaspen Insurance Group, Inc., since 1995. He has extensive experience:

• Providing Insurance Risk Management Consultant Services and Policy / Risk Management Program Audit Services to Commercial Clients and Agents/Brokers
• Providing Personal and Commercial Insurance Policy Coverage training for Agents, Brokers and Risk Managers

Mr. Burkett began his career as a Loss Control Representative for SAFECO Insurance Company after serving as an Officer in the United States Air Force. During his career with SAFECO, he served as a Loss Control Supervisor, Loss Control Manager, Commercial Sales Representative, Division Commercial Lines Underwriting Manager, and Regional Workers Compensation Manager.

From Safeco Insurance Company, Mr. Burkett worked for Frank B. Hall & Company as a Vice President in charge of Risk Management Services. From Frank B. Hall, Mr. Burkett assisted in establishing the Meadowbrook of Colorado office and focused on developing specialized group programs.

Paul Burkett delivers seminars as a National Instructor for Certified Insurance Counselor (CIC) Courses, National Instructor for Certified Insurance Service Representative (CISR) Courses and a Nevada Independent Insurance Agents Association Instructor for numerous Personal and Commercial Insurance coverage topics.

Areas of Expertise:

• Insurance Company Good and Bad Faith
• Agent / Broker Standard of Care
• Insurance Industry Customs and Practices
• Risk Management
• Business Contract Insurance Clause Analysis and Application
• Insurance Coverage Analysis
• Insurance Claims Disputes Analysis

View Paul Burkett's Expert Witness Profile.

Elliott M. Stein, MD is a Geriatric Psychiatrist with over 45 years of experience caring for the elderly. Dr. Stein is Board Certified by the American Board of Psychiatry and Neurology in General Psychiatry (October, 1979) and Geriatric Psychiatry (April, 1991; Re-Certified, December, 2001, April, 2011, December 2022). He is licensed in California and Florida. Dr. Stein was the Director of Psychiatry at the Jewish Home of San Francisco from 2010-2020, and the Medical Director of their Geriatric Psychiatry Hospital. He has treated older individuals, typically people who have complex combination of psychiatric and medical problems. Dr. Stein has been a Member of the Task Force on Testamentary Capacity and Undue Influence, for the International PsychoGeriatric Association.

Dr. Stein is a Clinical Professor (Voluntary) in the Department of Psychiatry at the University of California, San Francisco, School of Medicine. He is a Distinguished Life Fellow of the American Psychiatric Association and a Distinguished Fellow of the American Association for Geriatric Psychiatry and a Life Member of the International PsychoGeriatric Association.

He is available to serve as an Expert Witness, do legal and forensic consultation, record review, and assessments concerning Psychiatric issues in Older Individuals. Dr. Stein offers his services to attorneys for both Plaintiff or Defense.

Consulting Specialties:

• Contested Wills and Trusts
• Testamentary Capacity, Undue Influence, Insane Delusions
• Geriatric Competence/Capacity
• Financial Elder Abuse
• Dementia and Delirium, Alzheimer’s Disease
• Geriatric Psychiatry Evaluation and Treatment, Psychiatric Medication, Psychotherapeutic Issues
• Depression and Anxiety Disorders
• Relationship Problems between the Elderly and their Adult Children
• Aging and Mental Disorders
• Geriatric Psychiatry issues concerning Hospitals, Nursing Homes, Independent and Assisted Living Facilities
• Medicare Psychiatric Services Coding and Documentation

View Dr. Stein's Expert Witness Profile.

William B. Stetson, MD specializes in Sports Medicine with an expertise in Arthroscopic and Reconstructive Surgery of the shoulder, knee, elbow and ankle. He has first hand knowledge of athletic injuries and the desire that all of us have to “get back in the game”. He is an associate clinical professor of orthopedic surgery at the USC Keck School of Medicine and is the team physician on the USA Men’s and Women’s volleyball teams and was with both teams in London, England for the 2012 Summer Olympics. 

Dr. Stetson utilizes leading edge diagnostic solutions to assess and repair knee injuries, shoulder injuries, elbow injuries, and conditions relating to Arthritis . State-of-the-art, minimally invasive surgery techniques such as arthroscopic surgery means faster recovery times.

Areas of Orthopedic and Sports Medicine Specialization:

Knee Arthroscopy Shoulder Arthroscopy Rotator Cuff Repair ACL Reconstruction Treatment of Arthritis

Knee Ligament Reconstruction Recurrent Shoulder Dislocation Shoulder Impingement / Bursitis Meniscus Repair and Meniscectomy Elbow Arthroscopy

Dr. Stetson has traveled extensively throughout the world teaching and lecturing about shoulder arthroscopy and recently returned from Romania and Beijing, China where he lectured about the latest techniques of shoulder arthroscopy. He has started a non-profit organization, Operation Arthroscopy, whose mission is to bring orthopaedic surgery and arthroscopy to countries and communities in need.

View Dr. Stetson's Expert Witness Profile.

Sunset Consultants is an Architectural and Engineering Management firm that provides professional strategic planning and management consulting services for various entities, including those that need help with planning or architectural projects. Sunset's clients include well-established design firms and new professionals learning the basics of running an independent business. Sunset provides the following services:

Project Management Profit and Loss Analysis Business Development

Merger and Acquisition Analysis Sales and Marketing Advice Strategic Planning

Principal, David J. Brotman, FAIA, is an accomplished Senior Executive with a proven career and solid experience in all aspects of Architectural and Engineering Firm Management. Mr. Brotman's skills include all facets of Architectural Practice. His worldwide, multi-million dollar project experience includes retail, office, hotel, institutional, and mixed-use. 

Mr. Brotman has a successful track record and expert qualifications in improving quality of work, market share, delivering strong revenue, and profit gains. His experience encompasses start-up, turnaround, high-growth, and multi-national operations. David Brotman holds a reputation among colleagues, subordinates, and associates for creative imagination, vision, team building, and leadership skills. He specializes in envisioning an end-result, then leading a management team to realize that result with marked improvements along the way.

 View David Brotman's Expert Witness Profile.