Quick answers
- Where does Marsha A. Williamson see patients?
- Medicare's clinician data lists 2 practice locations, including Long Island City, NY and Astoria, NY. Call before your visit to confirm the address.
- What is Marsha A. Williamson's specialty?
- Medicare lists Nurse Practitioner as the primary specialty.
- Does Marsha A. Williamson accept Medicare assignment?
- Yes. Medicare's clinician data says Marsha A. Williamson 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 Marsha A. Williamson?
- (917) 410-6990, as listed in official Medicare / NPI Registry data.
- What is Marsha A. Williamson's NPI number?
- 1265552277. 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 Marsha A. Williamson is enrolled with Medicare (CMS data updated 2026-10-02).
- 3007 36th AveLong Island City, NY 11106 (917) 410‑6990
- 3715 23rd AveAstoria, NY 11105 (855) 936‑7362
Group practices
Medicare enrollment lists Marsha A. Williamson as a member of this group (CMS data updated 2026-10-02).
- Hicksville Family Medical Care PLLC41 clinicians in the group
Specialties
- Nurse Practitionerprimary
Other nurse practitioners in Long Island City
Clinicians with the same Medicare primary specialty in Long Island City, NY — not a recommendation.
Clinician information
| Graduation year | 2002 |
|---|---|
| Gender (as listed) | Female |
| Medicare assignment | Accepts (Medicare-approved amount as full payment) |
| NPI (National Provider Identifier) | 1265552277 |
| 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