Quick answers
- Where does William Wertheim see patients?
- Medicare's clinician data lists 2 practice locations, including Mount Vernon, NY and New York, NY. Call before your visit to confirm the address.
- What is William Wertheim's specialty?
- Medicare lists Clinical Social Worker as the primary specialty.
- Does William Wertheim accept Medicare assignment?
- Yes. Medicare's clinician data says William Wertheim 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 William Wertheim offer telehealth?
- Medicare's clinician data says William Wertheim offers telehealth services. Ask the office which visits can be done by video or phone.
- What is the phone number for William Wertheim?
- (212) 315-1030, as listed in official Medicare / NPI Registry data.
- What is William Wertheim's NPI number?
- 1013997287. 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 William Wertheim is enrolled with Medicare (CMS data updated 2026-10-02).
- 100 Sycamore AveMount Vernon, NY 10553 (212) 315‑1030
- 37 W 57th St, Suite 601New York, NY 10019 (914) 260‑9757
Specialties
- Clinical Social Workerprimary
Other clinical social workers in Mount Vernon
Clinicians with the same Medicare primary specialty in Mount Vernon, NY — not a recommendation.
Clinician information
| Credential | CSW |
|---|---|
| Graduation year | 1976 |
| Gender (as listed) | Male |
| Medicare assignment | Accepts (Medicare-approved amount as full payment) |
| Telehealth | Offers telehealth services |
| NPI (National Provider Identifier) | 1013997287 |
| 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