Lionel Grossbard, M.D.
NPI 1205877818 · Hematology & Oncology Physician · New York, NY
Lionel Grossbard, M.D. is a Hematology & Oncology Physician provider in New York, NY (NPI 1205877818).
Provider details
- NPI number
- 1205877818
- Entity type
- Individual
- Primary specialty
- Hematology & Oncology PhysicianAllopathic & Osteopathic Physicians
- Credential
- M.D.
- Sex
- Male
- License
- 088058 (NY)
Specialties & taxonomies
Allopathic & Osteopathic Physicians
Profile Score
A profile completeness & documented-activity index — NOT a quality, outcomes, or patient-satisfaction rating.
- Registry tenure38% of score
20 yrs in NPPES registry
- Profile completeness38% of score
100% of core fields populated
- Practice footprint23% of score
1 documented practice location
Signals a provider has no public data for (e.g. Medicare claims) are left out of the score entirely — never counted as zero — so providers without that data are not penalized. See the full formula and weights in our methodology.
Practice location
Mailing address
Registry dates
- Enumerated
- 2006-06-08
- Last updated
- 2007-07-08
Frequently asked questions
- What is Lionel Grossbard's NPI number?
- Lionel Grossbard's National Provider Identifier (NPI) is 1205877818, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Lionel Grossbard's specialty?
- Lionel Grossbard is listed in the NPPES registry with a primary specialty of Hematology & Oncology Physician (Allopathic & Osteopathic Physicians).
- Where is Lionel Grossbard located?
- Lionel Grossbard's practice location on file with NPPES is 161 Fort Washington Ave, New York, NY 10032-3729.
- What is Lionel Grossbard's phone number?
- The practice phone number listed in the NPPES registry for Lionel Grossbard is (212) 305-8399.
- Is Lionel Grossbard's NPI active?
- Yes — Lionel Grossbard's NPI (1205877818) is active in the NPPES registry as of the last update on 2007-07-08.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.