Ann Marie Stephenson ThomasD.O.
Gastroenterology·Rockville, MD
Ann Marie Stephenson Thomas, D.O. is a Gastroenterology provider in Rockville, MD affiliated with 1 ambulatory surgery center in MD, as of July 2026.
- NPI1376742601
- Registered2007
- Centers1
- StateMD
- Class of2003
Case volumes, referral patterns, and payer mix live in DataLily AI Insights.
Ambulatory surgery centers
Centers whose service lines match this provider’s. Affiliations change; verify independently.
Education
Education on record as of August 2026.
Ann Marie Stephenson Thomas at a glance
- Provider
- Ann Marie Stephenson Thomas
- Credential
- D.O.
- Specialty
- Gastroenterology
- Procedures
- Gastroenterology CPT codes
- Location
- Rockville, MD
- Medical school
- Philadelphia College of Osteopathic Medicine
- Graduated
- 2003
- NPI registered
- 2007
- NPI
- 1376742601
- Snapshot
- July 2026
Identity, specialty, and affiliations change over time. This is not an endorsement, and not clinical, billing, or legal advice. Providers may request corrections at founders@datalilyai.com. Read the DataLily AI data methodology.
Questions
Where does Ann Marie Stephenson Thomas practice?
Ann Marie Stephenson Thomas, D.O. is based in Rockville, MD and is affiliated with 1 ambulatory surgery center: Fallsgrove Endoscopy Center LLC in Rockville, MD. Affiliations reflect the current DataLily AI snapshot (July 2026) and can change.
What is Ann Marie Stephenson Thomas's NPI number?
Ann Marie Stephenson Thomas's National Provider Identifier (NPI) is 1376742601, registered in 2007. Specialty on record: Gastroenterology; credential D.O.
Where did Ann Marie Stephenson Thomas go to medical school?
Ann Marie Stephenson Thomas, D.O. attended Philadelphia College of Osteopathic Medicine, graduating in 2003.
How many Gastroenterology providers in Maryland work at ambulatory surgery centers?
170 Gastroenterology surgeons and proceduralists in Maryland are affiliated with ambulatory surgery centers in DataLily AI's current snapshot, Ann Marie Stephenson Thomas among them. The Maryland Gastroenterology directory lists each one by city with credential, NPI, and center affiliations.
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