Quick answers
- Where does Ingrid W. Williams see patients?
- Medicare's clinician data lists 2 practice locations, including Washington, DC and Clinton, MD. Call before your visit to confirm the address.
- What is Ingrid W. Williams's specialty?
- Medicare lists Physician Assistant as the primary specialty.
- Does Ingrid W. Williams accept Medicare assignment?
- Yes. Medicare's clinician data says Ingrid W. 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.
- What is the phone number for Ingrid W. Williams?
- (202) 429-2401, as listed in official Medicare / NPI Registry data.
- What is Ingrid W. Williams's NPI number?
- 1144382896. The NPI (National Provider Identifier) is the clinician's permanent federal ID; you can look it up in the official NPI Registry.
Practice locations
Addresses where Ingrid W. Williams is enrolled with Medicare (CMS data updated 2026-10-02).
- 1145 19th St NW, 311 Mmg at 19th Street NWWashington, DC 20036 (202) 429‑2401
- 7503 Surratts RdClinton, MD 20735 (301) 868‑8000
Group practices
Medicare enrollment lists Ingrid W. Williams as a member of this group (CMS data updated 2026-10-02).
- MedStar Medical Group II LLC3,767 clinicians in the group
Specialties
- Physician Assistantprimary
Find other clinicians: Physician Assistant, District of Columbia →
Other physician assistants in Washington
Clinicians with the same Medicare primary specialty in Washington, DC — not a recommendation.
Clinician information
| Credential | PA |
|---|---|
| Graduation year | 1992 |
| Gender (as listed) | Female |
| Medicare assignment | Accepts (Medicare-approved amount as full payment) |
| NPI (National Provider Identifier) | 1144382896 |
| 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
- 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