Provider records sourced from NPPES (CMS National Plan & Provider Enumeration System). Data current as of August 10, 2026.

Weiming Ryan Yan, MD

Individual provider Gastroenterology Physician · NPI 1851552624

Weiming Ryan Yan, MD is a Gastroenterology in Frederick, Maryland. Graduated from Ohio State University College of Medicine in 2008, 18 years ago. Practices with Frederick Gastroenterology Associates PA, a 16-clinician group, works from 2 locations and accepts Medicare assignment. Licensed in Maryland.

Years since qualifying
18
Trained at
Ohio State University College of Medicine
Licensed in
MD
In the registry since
2008
Specialties on file
2
What do these letters mean?
MD — Doctor of Medicine
A physician who completed allopathic medical school.

See every abbreviation used in this directory →

Practice location Address checks out

7109 Guilford Dr Ste 300
Frederick, MD 21704-5179
Phone: (301) 695-6800
Fax: (301) 695-6891
Show map & directions

Pin is approximate — placed at the ZIP-code centre, not the exact door.

Additional practice locations (1)

  • 5401 Old Court Rd, Randallstown, MD 21133-5103 — (410) 521-2200

Specialties & licences

Gastroenterology Physician (primary) Taxonomy 207RG0100X · Licence D0072237 (MD)
Internal Medicine Physician Taxonomy 207R00000X · Licence D72237 (MD)

Record details

NPI number1851552624
Entity typeIndividual (Type 1)
GenderMale
Credentials MD
Sole proprietorYes
NPI enumeratedJune 24, 2008
Last updated in NPPESNovember 7, 2023
Certification dateNovember 7, 2023
Mailing address7109 Guilford Dr Ste 300, Frederick, MD 21704-5179

Medicare enrollment

From the CMS Doctors & Clinicians file — this clinician is enrolled in Medicare.

Medicare specialtyGASTROENTEROLOGY
Also practisesEMERGENCY MEDICINE
Medical schoolOHIO STATE UNIVERSITY COLLEGE OF MEDICINE
Graduated 2008 (18 years in practice)
Group practice Frederick Gastroenterology Associates Pa — 16 clinicians
Accepts Medicare assignment Yes — accepts the Medicare-approved amount
Practice locations3 on file with Medicare

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