Medical Specialists Expert Witnesses: 88

William Bisordi, MD, FACP, is a Board Certified Internist and Gastroenterologist with 35 years of experience in private practice. Dr. Bisordi currently serves as a consultant in field of medical record review, lab analysis, and outcomes and adverse reactions for the Pharmaceutical and Healthcare industry.

Career Experience:

• New York State Department of Health Office of Professional Medical Conduct, Hearing Board, 2003-2019
• Board of Directors, Secretary, Westchester Health Care Corporation, 1998-2003
• Medical Director, Care Plus Health Plan, 1995-1997
• Senior Physician Consultant, Island Peer Review Organization, 1992-1998

Litigation Support - Dr. Bisordi has extensive experience in record review for both plaintiff and defense attorneys over the past 35 years. His expertise includes Medical Record Review, Negligence Issues, Standard of Care Issues, Medical Damages, and Medical Data Analysis. In his capacity as a Medical Expert, he helped win a $20,000,000 verdict.

Areas of Expertise:

  Fee Schedule upon Request.

Gerald W. Smetana, MD, Board Certified in Internal Medicine, is a General Internist with 38 years of experience in an academic primary care practice at Beth Israel Deaconess Medical Center in Boston. He is also a Professor of Medicine at Harvard Medical School where he has taught internal medicine to medical house staff and also teaches extensively to practicing clinicians in continuing medical education settings. Dr. Smetana is a Master of the American College of Physicians.

Practicing in an outpatient setting, Dr. Smetana cared for a panel of patients that was weighted towards those with multiple chronic illnesses and high disease complexity. In addition to all aspects of office based general internal medicine, his areas of interest include Preoperative Medical Evaluation, Hypertension, and Headache.

Dr. Smetana has been repeatedly selected as a Best Doctor in a national survey. He publishes in the peer reviewed medical literature and medical texts, has edited textbooks, and has helped to develop national guidelines on topics in internal medicine. He has been invited to deliver seminars and presentations on various topics within his area of expertise nationally and internationally. He has been a section editor for the Annals of Internal Medicine. In April 2025, Dr. Smetana retired from clinical practice, but remains active in scholarly work, lecturing, and consulting.

Litigation Support - Dr. Smetana reviews cases for both plaintiffs and defendants and has testified at deposition and at trial as an expert on numerous occasions in most states in the eastern United States. He has reviewed medical malpractice cases over the past 20 years both for plaintiffs and doctors. Dr. Smetana also consults for risk management insurers. His record review and medicolegal consultation services are available throughout the United States.

Monica M. Argumedo, MD, is a Board-Certified Forensic and Clinical Psychiatrist (ABPN). Dr. Argumedo has testified about her forensic opinions in more than 40 cases in open court. In psychiatric practice for more than 15 years, Dr. Argumedo teaches at Rush University Medical School/Rush University Medical Center as Assistant Professor in Psychiatry. She teaches psychiatry residents in topics related to psychiatry and the law, and psychiatry in medicine. She also interviews prospective medical students through her role on the Medical Admissions Committee.

Dr. Argumedo works with Employers in cases where mental health/psychiatric concerns about an employee require an objective and unbiased Fitness for Duty Evaluation and report. She also consults in employment matters and litigation and serves as a disclosed expert witness. Her work addresses fitness for duty (FFD) in a litigated environment, Wrongful Termination, and Psychiatric Disability. Additional experience includes FFD of peace officers and first responders.

Services - Forensic Psychiatry, Medico-Legal evaluations, medical complications, review of records, written reports, deposition testimony, trial testimony, consultation to attorneys addressing psychiatric issues relevant in a case, opposing counsel expert reports or expert qualifications, assisting with cross-examination questions, and lines of inquiry.

Areas of Expertise:

Paul M. Adler, DO, FACEP, MBA, Medical Director for the Ventura County, California, Department of Corrections, has worked in Correctional / Jail / Prison Medicine & COVID-19 Preparation & Response. He has overseen the care of inmates in Jails in California and New York, as well as Prison inmates who have been transferred to county facilities to serve their terms for years in county jails in California. He has also overseen Correctional health car in locked units in Hospitals . 

Dr. Adler is the President-Elect of The American Correctional Health Services Association of California / Nevada, which represents all clinicians and administrators in Jails/Prisons in California and Nevada. He previously oversaw a County Hospital, County Nursing Home and ran a County Health Department and oversaw Correctional healthcare for the Westchester, New York Jail.

Litigation Support - Dr. Adler has defended Jails and Prisons in Southern California, Idaho, Texas, North Carolina, New York, Pennsylvania, etc. He is currently the expert consultant to the California Prison System for Covid litigation and the medical consultant to the judicial consent decree overseeing care in the Philadelphia Department of Prisons. He also served as the expert consultant to the ACLU for Covid in the Illinois Department of Corrections

Dr. Adler still works as a full-time practicing physician and has helped attorneys and insurance companies in Emergency Medicine, Nursing Home Medicine, Public Health and Hospital Administration since 1985. He has been involved in Plaintiff litigation in many states including against Rikers Island, NY and Cook County Jail and is available to review and consult on clinical Correctional/Jail/Prison cases for attorneys for both Plaintiff and Defense.

Services:

• COVID-19 Preparation & Response
• Medical Oversight of Federal Consent Decrees
• Screen Cases for Merit
• Review, Analyze and interpret Medical Records
• Provide Basic or Comprehensive Written Reports
• Interpret Standards of Care, Deviation and Adherences as they Relate to Correctional Health Care
• Develop Chronological Time Lines
• Policy and Procedure Development

Dr. Andrew Mark Rodgers, BS, MS, DC, is a National Certifed Chiropractic Expert Witness with over 38 years of experience. He has worked on over 120 malpractice cases on the proper standard of care and has testified in 30 cases in the last 22 years. Dr. Rodgers is available for complimentary verbal evaluations, offers expedient affidavits and cost-effective testimonies and depositions for chiropractic deviation from standard of care cases nationwide. He represents both Defendant and Plaintiff.

Areas of Expertise

• Malpractice cases – proving standard of care and deviationsm, causation, and informed consent issues
• Administrative law, state laws, and honest medical protocols and billing procedures
• Plaintiff/defendant expert witness testimony in trauma cases, motor vehicle cases, workers comp cases and/or slip and fall injuries
• Insurance fraud
• Continues very active clinical practice

David Martinez has over 35 years of experience in the field of Medical Billing. His expertise covers all facets of the revenue cycle, and he possesses a comprehensive understanding of relevant laws, regulations, and statutes, especially those applicable in California. 

Accurate Medical Billing are among the most sought-after expert witnesses. Accurate the only billing service to earn Preferred Partner status with the San Bernardino County Medical Society and the only billing service authorized in California to perform CEUs for doctors. They possess extensive knowledge and experience in insurance billing, claims, and collections. Accurate is the recommended billing service by and for CCA members and endorsed and recommended by ICAC. Co-Chair of the Insurance and Managed Care Committee – California Chiropractic Association. 

 Mr. Martinez is the administrator of the largest medical billing group on Facebook, which boasts over 6,000 members. This role entails significant responsibility and trust. He has curated a highly qualified team of experts in the field, which includes Certified Coders, Auditors, and Medical Reimbursement Specialists. His team comprises former claims examiners for insurance companies, as well as auditors, billers, coders, and compliance specialists, giving them deep insights into insurance companies' strategies.

Areas of Expertise:

Partial Background Experience:

• Consolidated Healthcare Services - Director of Billing and Collections for 54 current and past, state-of-the-art Open MRI, primarily in the Southeast United States. Mentored training developed a direct staff of 24 and an indirect staff of 72.
• Prime Healthcare Hospital - Business Office Manager Incorporated fully managed care training and collections. Collaborated with legal counsel in the interpretation of medical records.

 Education / Training:

• Certified Professional Coder
• Certified CE Educator (California Board of Chiropractic Examiners)
• Certified Medical Reimbursement Billing Specialist
• Certified Claims Auditor
• Certified Claims Examiner
• Certified HIPAA Professional
• Certified Medical Claims Biller
• Certified Compliance Officer (9 others) Certifications)

Dr. David H. Schaffer, MD, MRO is a Harvard-trained, dual-boarded MD in both Medical Toxicology and Emergency Medicine, serving as the Director of Medical Toxicology at the University of South Carolina School of Medicine in Greenville, SC and Prisma Health–Upstate hospitals. He is also a certified Medical Review Officer (MRO, MROCC).

Dr. Schaffer is extensively published and is an experienced expert witness in cases including Med Mal, wrongful death, personal injury, child custody, and more.

Ramzy Rimawi, MD, is American board certified in Internal Medicine, Infectious Diseases, and Critical Care Medicine. He has authored dozens of articles and given hundreds of lectures in the fields of IM, ID, and critical care. Dr. Rimawi is extremely well qualified in topics including sepsis, infections, critical care, and ethics.

 As an expert medical witness, Dr. Rimawi has reviewed hundreds of medical malpractice cases for both plaintiff and defense.

Dr Karthik Reddy Pammi, MBBS, MS (Orthopaedics)
Fellowship-trained orthopaedic surgeon performing 750+ robotic / computer-assisted knee and hip replacements and 300+ ACL / PCL/ shoulder arthroscopies each year at Apollo Hospitals, Chennai.

Expertise: 

Robotic TKA Alignment Errors, Early Loosening, Revision Arthroplasty, Tunnel Misplacement, Arthroscopy Complications, Implant Product Lability. Reports in =14 days; Zoom depositions U S-time; fees review $450/hr, depo $500/hr.

Dr. Ariel F. Grajales-Cruz, triple board-certified in Internal Medicine, Hematology, and Medical Oncology, specializes in multiple myeloma and advanced immunotherapies. An Assistant Member at Moffitt Cancer Center and USF faculty, he offers expert witness testimony, malpractice review, and litigation support. Author of 20+ publications, he lectures worldwide and is fluent in English, Spanish, and French.

Expertise in Myeloma, CAR-T, Immunotherapy & Malpractice Cases.

Expert Witness in Emergency Medicine, Urgent Care,  and Family Medicine Dr. W. Anthony Gerard is a Full time Emergency Physician and Assistant Clinical Professor of Family Medicine. He also practices in Rural and Urgent Care Medicine part time. Dr. Gerard has a special interest in Urgent care, Emergency medicine, family medicine,   Call Dr. Gerard for Prompt, Professional, Personal Service.

Over 25 years of experience across clinical practice, life care planning, healthcare reimbursement, and medical cost analysis. Served as a principal or managing member over 40 healthcare-related entities spanning life care planning, physical rehabilitation, pharmacy administration, surgical center operations, revenue cycle management, and healthcare compliance.

Expertise: future medical needs, lifetime medical costs, ERISA-governed benefit plans, disputed medical claims, catastrophic injury