Quick answers
- Which hospitals does James Williams work at?
- Medicare's official clinician data lists James Williams at 2 hospitals: Sibley Memorial Hospital and Virginia Hospital Center. This is where the clinician works or has privileges; call the hospital to confirm.
- Where does James Williams see patients?
- Medicare's clinician data lists 3 practice locations, including Washington, DC and Bethesda, MD. Call before your visit to confirm the address.
- What is James Williams's specialty?
- Medicare lists Family Practice as the primary specialty.
- Does James Williams accept Medicare assignment?
- Yes. Medicare's clinician data says James Williams 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.
- Does James Williams offer telehealth?
- Medicare's clinician data says James Williams offers telehealth services. Ask the office which visits can be done by video or phone.
- What is the phone number for James Williams?
- (202) 244-9300, as listed in official Medicare / NPI Registry data.
- What is James Williams's NPI number?
- 1770664534. The NPI (National Provider Identifier) is the clinician's permanent federal ID; you can look it up in the official NPI Registry.
Hospitals where James Williams works
Medicare's Facility Affiliation Data lists James Williams at these hospitals (updated 2026-10-02). Each hospital page shows its address, phone, emergency services, Medicare rating and all its clinicians.
- Sibley Memorial HospitalWashington, DC · Acute Care Hospital · CCN 090005
- Virginia Hospital CenterArlington, VA · Acute Care Hospital · CCN 490050
Practice locations
Addresses where James Williams is enrolled with Medicare (CMS data updated 2026-10-02).
- 5215 Loughboro Rd NW, Suite 310Washington, DC 20016 (202) 244‑9300
- 6410 Rockledge DrBethesda, MD 20817
- 6410 Rockledge Dr, Suite 600Bethesda, MD 20817
Group practices
Medicare enrollment lists James Williams as a member of these groups (CMS data updated 2026-10-02).
- Suburban/Nrh Medical Rehabilitation Inc941 clinicians in the group
- Complete Concierge Care Medical of8 clinicians in the group
Specialties
- Family Practiceprimary
Find other Family Practice doctors in District of Columbia →
Other family doctors in Washington
Clinicians with the same Medicare primary specialty in Washington, DC — not a recommendation.
Clinician information
| Credential | MD |
|---|---|
| Medical school | Virginia Commonwealth University, School Of Medicine |
| Graduation year | 1998 |
| Gender (as listed) | Male |
| Medicare assignment | Accepts (Medicare-approved amount as full payment) |
| Telehealth | Offers telehealth services |
| NPI (National Provider Identifier) | 1770664534 |
| 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