Gregory A. Pinnell, M.D.

Dr. Pinnell is founder and flight surgeon for Air Docs. A board certified primary care physician working in an academic multi-specialty care center in Saginaw, Michigan, he is also an adjunct professor at Western Michigan University College of Aviation, senior flight surgeon at the Air Force's 45th Space Wing, and a member of the Experimental Aircraft Association's Aeromedical Advisory Council.

A licensed private/instrument pilot, he has a rich background in medicine including working as an emergency room physician, medical examiner, and paramedic.


Scott E. Phillips, M.D., FACS, FAAOA

Dr. Phillips has a history of over 20 years as an Air Force flight surgeon, and is a board certified Ear Nose and Throat physician in private practice in Indianapolis. He also serves as a consultant the FAA’s Federal Air Surgeon. A long-time instructor and nationally recognized speaker and researcher, Dr. Phillips serves as an associate professor at two medical schools, and actively participates in the education of military physicians for the Air Force, Army, and Navy. He also served as the Deputy Chief of Bioastronautics for the DoD Human Spaceflight Support Program.

Marshall Brown, M.D.

Dr. Brown is senior aviation medical examiner for Air Docs. A board certified otolaryngologist/head and neck surgeon in Saginaw, Michigan, he is a private pilot with instrument, multi-engine, and tail dragger ratings. He currently flies a Maule M7 and is an advocate for general aviation.

Dr William L. Bray

Dr William L. Bray has been a designated AME since 2000, performing Class 2 and Class3 exams. He is double boarded by the American Board of Family Medicine and the American Board of Independent Medical Examiners. He is an Air Force Reserve flight surgeon and currently serves as the Chief of Aerospace Medicine for the 434th ARW, Grissom ARB, IN. He has over 600 military and 50 civilian flying hours, including over 200 hours in fighter aircraft. He is a certified medical review officer and holds a Certificate in Travel Health from the International Society of Travel Medicine.

Mark Ivey, MD

Mark Ivey, MD

Col (Dr) Mark Ivey is a highly experienced Senior/HIMS AME; with 23 yrs experience. He is board certified in 4 specialties: Pulmonary Diseases, Critical Care Medicine, Internal Medicine and Sleep Medicine. He is a rated aviator with 3000 hrs rotary wing, a civilian CFI and Commercial pilot. He is a Federal Air Surgeon Consultant and Consultant to the NGB Surgeon General. He continues to serve his country as the Chief Aerospace Medical Officer with the 129th Rescue Wing Moffett ANG Base California.

Joseph Ravid, MD

Joseph Ravid, MD

Dr. Ravid is a Fellow of the American Academy of Family Physicians and Senior Aviation Medical Examiner. He is Medical Director/tactical combat physician with the Charlotte County sheriff’s office SWAT team and serves as Civil surgeon for the U.S Department of homeland security. His other duties include Associate Professor of Medicine University of South Florida and PADI master instructor.

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Basil Spyropoulos, MD

Dr. Spyropoulos is a psychiatrist in practice for 20 years. He trained at Southern Illinois University School of Medicine and is certified by the American Board of Psychiatry and Neurology. He specializes in general and aerospace psychiatry and sees pilots for psychiatric and HIMS program evaluations at his office in Elmhurst, Illinois. He has been a private pilot for 18 years and is a Trustee of the Board of Directors of the Civil Aviation Medical Association.


Dr. Stan Adkins, MD

Dr. Adkins is a specialist in Internal Medicine trained at the Indiana University Medical School and Methodist Hospital in Indianapolis. He served in the Air Force. He is a senior AME and a private pilot. He was national Vice President of the American Heart Association.

Mark O’Grifa

Mark O’Grifa, MD

Marc O Griofa, MD is a tactical combat casualty care (TCCC) and advanced trauma life support (ATLS) instructor preparing both operators and physicians pre-deployment and is also a Fellow of the Academy of Wilderness Medicine. Dr O Griofa is the principle investigator for Project CASPER (Cardiac Adapted Sleep Parameters Recorder), which was the first Irish experiment to fly onboard ISS and Space Shuttle as part of the European Space Agency (ESA) Astrolab mission focusing on the monitoring of sleep during both spaceflight and in remote extreme environments using cardiac autonomic activity as a surrogate marker for sleep stability. He spent 3 years at Kennedy Space Center as part of the Aerospace Medicine and Biomedical Research departments providing medical support for the Space Shuttle program.


Dr. Kenneth Yokosawa, MD

Dr. Yokosawa is board certified in Family Medicine and is the Program Director for Rush-Copley Family Medicine Residency in Aurora, Illinois. He served 23 years as the Family Medicine Clerkship Director for Michigan State University/College of Human Medicine, and at the same time was the Program Director for the Michigan State University/Genesys Regional Medical Center Family Medicine Residency Program. Dr. Yokosawa is a private pilot, experimental aircraft builder, and automotive restorer.

Vikki Simpson

Vikki is a Flight Nurse/Paramedic and Instructor/Coordinator for AirDocs with 28 years of pre-hospital and hospital experience. She has a multifaceted background in medicine and education to include Flight Nursing via Jet, Fixed Wing and Helicopter. Her experience also includes Emergency Room, Intensive Care, Mobile Intensive Care, Home Health, Dialysis, Long Term Acute Care, Corrections and Travel Nursing. Vikki's continued passion for the medical field is evident in her enthusiasm for a job well done and in tayloring educational classes to meet individual needs.

Leslie Shaffer

Leslie Shaffer has been a flight attendant for 24 years. Her career started with Northwest Airlines in September 1989. Since then, she's received many accommodation letters. She has been honored three times as flight attendant of the year.