Quick answers
- Which hospitals does Stephen A. Semick work at?
- Medicare's official clinician data lists Stephen A. Semick at 1 hospital: Mount Sinai Hospital. This is where the clinician works or has privileges; call the hospital to confirm.
- Where does Stephen A. Semick see patients?
- Medicare's clinician data lists 3 practice locations, including New York, NY and Astoria, NY. Call before your visit to confirm the address.
- What is Stephen A. Semick's specialty?
- Medicare lists Internal Medicine as the primary specialty.
- Does Stephen A. Semick accept Medicare assignment?
- Yes. Medicare's clinician data says Stephen A. Semick 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 Stephen A. Semick?
- (212) 523-6500, as listed in official Medicare / NPI Registry data.
- What is Stephen A. Semick's NPI number?
- 1568105682. The NPI (National Provider Identifier) is the clinician's permanent federal ID; you can look it up in the official NPI Registry.
Hospitals where Stephen A. Semick works
Medicare's Facility Affiliation Data lists Stephen A. Semick 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 Stephen A. Semick is enrolled with Medicare (CMS data updated 2026-10-02).
- 1000 10th AveNew York, NY 10019 (212) 523‑6500
- 1111 Amsterdam AveNew York, NY 10025 (212) 523‑6500
- 2510 30th AveAstoria, NY 11102 (718) 932‑1000
Group practices
Medicare enrollment lists Stephen A. Semick 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
- Internal Medicineprimary
Other internal medicine doctors in New York
Clinicians with the same Medicare primary specialty in New York, NY — not a recommendation.
Clinician information
| Credential | MD |
|---|---|
| Medical school | University Of Maryland School Of Medicine |
| Graduation year | 2025 |
| Gender (as listed) | Male |
| Medicare assignment | Accepts (Medicare-approved amount as full payment) |
| NPI (National Provider Identifier) | 1568105682 |
| 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