Quick answers
- Where does Mark S. Shaffer see patients?
- Medicare's clinician data lists 3 practice locations, including Bay Side, NY and Oakland Gardens, NY. Call before your visit to confirm the address.
- What is Mark S. Shaffer's specialty?
- Medicare lists Internal Medicine as the primary specialty.
- Does Mark S. Shaffer accept Medicare assignment?
- Yes. Medicare's clinician data says Mark S. Shaffer 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 Mark S. Shaffer?
- (718) 279-8787, as listed in official Medicare / NPI Registry data.
- What is Mark S. Shaffer's NPI number?
- 1295836674. 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 Mark S. Shaffer is enrolled with Medicare (CMS data updated 2026-10-02).
- 69 -36 A 215 StBay Side, NY 11364 (718) 279‑8787
- 69 -36 A 215 StOakland Gardens, NY 11364
- 69 -36aOakland Gardens, NY 11364
Specialties
- Internal Medicineprimary
Other internal medicine doctors in New York
Clinicians with the same Medicare primary specialty in New York — not a recommendation.
Clinician information
| Credential | MD |
|---|---|
| Graduation year | 1976 |
| Gender (as listed) | Male |
| Medicare assignment | Accepts (Medicare-approved amount as full payment) |
| NPI (National Provider Identifier) | 1295836674 |
| 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