Ann Marie Stephenson Thomas, DO, MBA


Ann Marie Stephenson Thomas, DO, MBA


Dr. Stephenson Thomas’s love for medicine was evident by age 10, and by the time she finished high school she had volunteered 1,000 hours as a candy striper in her hometown of Willingboro, New Jersey. Her extensive education in medical and health sciences includes a Bachelor of Science in Psychology, a Doctor of Osteopathic Medicine and a Master of Business Administration with a concentration in Health and Medical Services.

Following an internal medicine residency, Dr. Stephenson Thomas completed a fellowship in Geriatric Medicine and was granted an award for her research in geriatric gastroenterology. She decided to further pursue gastroenterology with a fellowship at Midwestern University in Chicago – a decision that was reinforced when she lost her father to stomach cancer in 2009. As a physician, she strives to provide great care and form trusting relationships with her patients.

Dr. Stephenson Thomas believes life balance is important, and in her spare time she enjoys volunteering in her community and spending time with family, including her nieces and nephews. Her personal interests include scuba diving, snowboarding, biking, and cooking.

Board Certifications
  • Gastroenterology – American Osteopathic Board of Internal Medicine
  • Internal Medicine – American Osteopathic Board of Internal Medicine
Medical Education
  • Doctor of Osteopathic Medicine – Philadelphia College of Osteopathic Medicine, Philadelphia, PA
  • Internal Medicine – Frankford Hospitals, Philadelphia, PA
  • Gastroenterology – St. James Hospital and Medical Centers, Chicago, IL
  • Geriatric Medicine – University of Medicine and Dentistry of New Jersey-New Jersey Institute for Successful Aging, Stratford, NJ
Postgraduate Education
  • Master of Business Administration – St. Joseph’s University, Philadelphia, PA
Undergraduate Education
  • Bachelor of Arts, Psychology – Spelman College, Atlanta, GA
  • Shady Grove Adventist Hospital
  • American College of Gastroenterology
  • American College of Osteopathic Internists
  • American Gastroenterological Association
  • American Osteopathic Association
Special Areas of Interest
  • Colorectal Cancer Screening
  • Irritable Bowel Syndrome
  • Inflammatory Bowel Disease
  • Hepatitis B & C
  • English

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At Fallsgrove Endoscopy Center, with our office located in Rockville, MD, the physicians are experienced in diagnosing and treating a variety of gastrointestinal issues. For expert care, call Fallsgrove Endoscopy Center today
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