Quick answers
- Which hospitals does Merin S. Thomas work at?
- Medicare's official clinician data lists Merin S. Thomas at 2 hospitals: Montefiore Medical Center and Westchester Medical Center. This is where the clinician works or has privileges; call the hospital to confirm.
- Where does Merin S. Thomas see patients?
- Medicare's clinician data lists 3 practice locations, including Valhalla, NY and Bronx, NY. Call before your visit to confirm the address.
- What is Merin S. Thomas's specialty?
- Medicare lists Nurse Practitioner as the primary specialty.
- Does Merin S. Thomas accept Medicare assignment?
- Medicare's clinician data says Merin S. Thomas may accept Medicare assignment (as of 2026-10-02). Ask the office whether they accept it for your visit.
- Does Merin S. Thomas offer telehealth?
- Medicare's clinician data says Merin S. Thomas offers telehealth services. Ask the office which visits can be done by video or phone.
- What is the phone number for Merin S. Thomas?
- (914) 493-6940, as listed in official Medicare / NPI Registry data.
- What is Merin S. Thomas's NPI number?
- 1437595691. The NPI (National Provider Identifier) is the clinician's permanent federal ID; you can look it up in the official NPI Registry.
Hospitals where Merin S. Thomas works
Medicare's Facility Affiliation Data lists Merin S. Thomas at these hospitals (updated 2026-10-02). Each hospital page shows its address, phone, emergency services, Medicare rating and all its clinicians.
- Montefiore Medical CenterBronx, NY · Acute Care Hospital · CCN 330059
- Westchester Medical CenterValhalla, NY · Acute Care Hospital · CCN 330234
Practice locations
Addresses where Merin S. Thomas is enrolled with Medicare (CMS data updated 2026-10-02).
- 100 Woods RdValhalla, NY 10595
- 111 E 210th StBronx, NY 10467
- 95 Grasslands RdValhalla, NY 10595 (914) 493‑6940
Group practices
Medicare enrollment lists Merin S. Thomas as a member of these groups (CMS data updated 2026-10-02).
- Montefiore Medical Center2,820 clinicians in the group
- Westchester Medical Center Advanced Physician Services PC897 clinicians in the group
Specialties
- Nurse Practitionerprimary
Other nurse practitioners in Valhalla
Clinicians with the same Medicare primary specialty in Valhalla, NY — not a recommendation.
Clinician information
| Credential | NP |
|---|---|
| Graduation year | 2023 |
| Gender (as listed) | Female |
| Medicare assignment | May accept for some services |
| Telehealth | Offers telehealth services |
| NPI (National Provider Identifier) | 1437595691 |
| 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