Quick answers
- Which hospitals does Anthony D. Nehlsen work at?
- Medicare's official clinician data lists Anthony D. Nehlsen at 2 hospitals: Mount Sinai Hospital and Mount Sinai West. This is where the clinician works or has privileges; call the hospital to confirm.
- Where does Anthony D. Nehlsen see patients?
- Medicare's clinician data lists 2 practice locations, including New York, NY. Call before your visit to confirm the address.
- What is Anthony D. Nehlsen's specialty?
- Medicare lists Radiation Oncology as the primary specialty.
- Does Anthony D. Nehlsen accept Medicare assignment?
- Yes. Medicare's clinician data says Anthony D. Nehlsen 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.
- Does Anthony D. Nehlsen offer telehealth?
- Medicare's clinician data says Anthony D. Nehlsen offers telehealth services. Ask the office which visits can be done by video or phone.
- What is the phone number for Anthony D. Nehlsen?
- (212) 241-6500, as listed in official Medicare / NPI Registry data.
- What is Anthony D. Nehlsen's NPI number?
- 1144753567. The NPI (National Provider Identifier) is the clinician's permanent federal ID; you can look it up in the official NPI Registry.
Hospitals where Anthony D. Nehlsen works
Medicare's Facility Affiliation Data lists Anthony D. Nehlsen 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
- Mount Sinai WestNew York, NY · Acute Care Hospital · CCN 330046
Practice locations
Addresses where Anthony D. Nehlsen is enrolled with Medicare (CMS data updated 2026-10-02).
- 1 Gustave L Levy PlNew York, NY 10029 (212) 241‑6500
- 225 E 126th StNew York, NY 10035 (646) 968‑9064
Group practices
Medicare enrollment lists Anthony D. Nehlsen as a member of these groups (CMS data updated 2026-10-02).
- Icahn School of Medicine at Mount Sinai2,843 clinicians in the group
- The New York Proton Center46 clinicians in the group
Specialties
- Radiation Oncologyprimary
Other radiation oncologists in New York
Clinicians with the same Medicare primary specialty in New York, NY — not a recommendation.
Clinician information
| Graduation year | 2017 |
|---|---|
| Gender (as listed) | Male |
| Medicare assignment | Accepts (Medicare-approved amount as full payment) |
| Telehealth | Offers telehealth services |
| NPI (National Provider Identifier) | 1144753567 |
| 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