Quick answers
- Which hospitals does Weiming R. Yan work at?
- Medicare's official clinician data lists Weiming R. Yan at 3 hospitals: Frederick Health Hospital, Holy Cross Germantown Hospital and Meritus Medical Center. This is where the clinician works or has privileges; call the hospital to confirm.
- Where does Weiming R. Yan see patients?
- Medicare's clinician data lists 3 practice locations, including Rockville, MD, Frederick, MD and Gaithersburg, MD. Call before your visit to confirm the address.
- What is Weiming R. Yan's specialty?
- Medicare lists Gastroenterology as the primary specialty, and also Emergency Medicine.
- Does Weiming R. Yan accept Medicare assignment?
- Yes. Medicare's clinician data says Weiming R. Yan accepts Medicare assignment (the Medicare-approved amount as full payment for covered services), as of 2026-10-02. Ask the office to confirm before your visit.
- What is the phone number for Weiming R. Yan?
- (301) 695-6800, as listed in official Medicare / NPI Registry data.
- What is Weiming R. Yan's NPI number?
- 1851552624. The NPI (National Provider Identifier) is the clinician's permanent federal ID; you can look it up in the official NPI Registry.
Hospitals where Weiming R. Yan works
Medicare's Facility Affiliation Data lists Weiming R. Yan at these hospitals (updated 2026-10-02). Each hospital page shows its address, phone, emergency services, Medicare rating and all its clinicians.
- Frederick Health HospitalFrederick, MD · Acute Care Hospital · CCN 210005
- Holy Cross Germantown HospitalGermantown, MD · Acute Care Hospital · CCN 210065
- Meritus Medical CenterHagerstown, MD · Acute Care Hospital · CCN 210001
Practice locations
Addresses where Weiming R. Yan is enrolled with Medicare (CMS data updated 2026-10-02).
- 15215 Shady Grove Rd, Suite 203Rockville, MD 20850 (301) 695‑6800
- 3430 Worthington Blvd, Suite 206Frederick, MD 21704 (301) 695‑6800
- 9318 Gaither Rd, Suite 205Gaithersburg, MD 20877 (240) 393‑5950
Group practices
Medicare enrollment lists Weiming R. Yan as a member of these groups (CMS data updated 2026-10-02).
- Frederick Gastroenterology Associates PA16 clinicians in the group
- Chinese Culture and Community Service Center Inc11 clinicians in the group
Specialties
- Gastroenterologyprimary
- Emergency Medicinealso
Other gastroenterologists in Rockville
Clinicians with the same Medicare primary specialty in Rockville, MD — not a recommendation.
Clinician information
| Credential | MD |
|---|---|
| Medical school | Ohio State University College Of Medicine |
| Graduation year | 2008 |
| Gender (as listed) | Male |
| Medicare assignment | Accepts (Medicare-approved amount as full payment) |
| NPI (National Provider Identifier) | 1851552624 |
| Corrections | Report an error or suggest an update → |
Most corrections must be made at the source: clinicians update their NPI Registry record (NPPES) and their Medicare enrollment (PECOS); this page follows the next data release.
Sources
- Facility Affiliation Data — Centers for Medicare & Medicaid Services (CMS), data updated 2026-10-02, retrieved 2026-10-29
- National Downloadable File (Doctors and Clinicians) — CMS, data updated 2026-10-02, retrieved 2026-10-29
- NPI Registry — U.S. Department of Health and Human Services (NPPES), the clinician’s official record
- Medicare Care Compare — official Medicare tool to look up clinicians