Quick answers
- Which hospitals does Isaac E. Stillman work at?
- Medicare's official clinician data lists Isaac E. Stillman at 1 hospital: Mount Sinai Hospital. This is where the clinician works or has privileges; call the hospital to confirm.
- Where does Isaac E. Stillman see patients?
- Medicare's clinician data lists 4 practice locations, including New York, NY and Brooklyn, NY. Call before your visit to confirm the address.
- What is Isaac E. Stillman's specialty?
- Medicare lists Pathology as the primary specialty.
- Does Isaac E. Stillman accept Medicare assignment?
- Yes. Medicare's clinician data says Isaac E. Stillman 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 Isaac E. Stillman?
- (212) 420-2124, as listed in official Medicare / NPI Registry data.
- What is Isaac E. Stillman's NPI number?
- 1548207723. The NPI (National Provider Identifier) is the clinician's permanent federal ID; you can look it up in the official NPI Registry.
Hospitals where Isaac E. Stillman works
Medicare's Facility Affiliation Data lists Isaac E. Stillman at these hospitals (updated 2026-10-02). Each hospital page shows its address, phone, emergency services, Medicare rating and all its clinicians.
- Mount Sinai HospitalNew York, NY · Acute Care Hospital · CCN 330024
Practice locations
Addresses where Isaac E. Stillman is enrolled with Medicare (CMS data updated 2026-10-02).
- 1000 10th AveNew York, NY 10019 (212) 420‑2124
- 1468 Madison AveNew York, NY 10029 (212) 731‑7772
- 3201 Kings HwyBrooklyn, NY 11234 (718) 252‑3000
- 5 E 98th St, Fl 6New York, NY 10029 (212) 241‑2221
Group practices
Medicare enrollment lists Isaac E. Stillman as a member of this group (CMS data updated 2026-10-02).
- Icahn School of Medicine at Mount Sinai2,843 clinicians in the group
Specialties
- Pathologyprimary
Other pathologists in New York
Clinicians with the same Medicare primary specialty in New York, NY — not a recommendation.
Clinician information
| Credential | MD |
|---|---|
| Graduation year | 1987 |
| Gender (as listed) | Male |
| Medicare assignment | Accepts (Medicare-approved amount as full payment) |
| NPI (National Provider Identifier) | 1548207723 |
| 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