Quick answers
- Where does William R. Grace see patients?
- Medicare's clinician data lists 2 practice locations, including New York, NY. Call before your visit to confirm the address.
- What is William R. Grace's specialty?
- Medicare lists Medical Oncology as the primary specialty, and also Hematology/Oncology.
- Does William R. Grace accept Medicare assignment?
- Yes. Medicare's clinician data says William R. Grace 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 R. Grace offer telehealth?
- Medicare's clinician data says William R. Grace offers telehealth services. Ask the office which visits can be done by video or phone.
- What is the phone number for William R. Grace?
- (631) 751-3000, as listed in official Medicare / NPI Registry data.
- What is William R. Grace's NPI number?
- 1578565610. 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 R. Grace is enrolled with Medicare (CMS data updated 2026-10-02).
- 12 E 86th St, Ofc 4cNew York, NY 10028 (631) 751‑3000
- 1421 3rd AveNew York, NY 10028 (631) 751‑3000
Group practices
Medicare enrollment lists William R. Grace as a member of this group (CMS data updated 2026-10-02).
- North Shore Hematology Oncology Associates PC479 clinicians in the group
Specialties
- Medical Oncologyprimary
- Hematology/Oncologyalso
Other oncologists in New York
Clinicians with the same Medicare primary specialty in New York, NY — not a recommendation.
Clinician information
| Credential | MD |
|---|---|
| Medical school | Boston University School Of Medicine |
| Graduation year | 1969 |
| Gender (as listed) | Male |
| Medicare assignment | Accepts (Medicare-approved amount as full payment) |
| Telehealth | Offers telehealth services |
| NPI (National Provider Identifier) | 1578565610 |
| 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