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Recently Updated NPI Information — some details in this NPI profile have been updated in the NPI registry within the last 60 days.

DR. LIONEL GROSSBARD M.D.
NPI 1205877818
Internal Medicine - Hematology & Oncology in New York, NY

Active since June 08, 2006
161 FORT WASHINGTON AVE, NEW YORK, NY 10032(212) 305-8399(212) 305-6848 Get Directions Write a Review

NPPES record last updated: July 13, 2026. Verified against the NPPES registry weekly; last sync: August 30, 2026.

About Dr. Lionel Grossbard M.d. NPPES

Official registry information on file with the National Plan and Provider Enumeration System.

DR. LIONEL GROSSBARD M.D. (NPI 1205877818) is an individual hematology & oncology provider in New York, New York, licensed in New York (088058) and active in the NPI registry since June 2006.

NPPES Registry Identity

NPI1205877818
Entity TypeIndividualMale
Primary Taxonomy207RH0003X
Provider Legal NameDR. LIONEL GROSSBARDCredential: M.D.
Location Address161 FORT WASHINGTON AVENew York, NY 10032-3729
Mailing Address161 Fort Washington AveNew York, NY 10032-3729 · (212) 305-8399 · Fax (212) 305-6848
Phone(212) 305-8399
Fax(212) 305-6848
Sole ProprietorNo
Enumeration DateJune 8, 2006
Last NPPES UpdateJuly 13, 2026
✔ NPI 1205877818 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses

★ Primary SpecialtyInternal Medicine · Hematology & OncologyAllopathic & Osteopathic Physicians
Taxonomy Code207RH0003X
License✔ Licensed in NY · 088058
Definition
An internist doctor of osteopathy that specializes in the treatment of the combination of hematology and oncology disorders. A doctor of osteopathy that is board eligible/certified by the American Osteopathic Board of Internal Medicine WAS able to obtain a Certificate of Special Qualifications in the field of Hematology and Oncology. The Certificate is NO longer offered.
161 FORT WASHINGTON AVE, New York, NY 10032
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Other Providers at the Same Location NPPES 20

Providers registered at the same practice address, or within the immediate area, according to the NPPES registry.

MAUREEN LICURSI CPNP
Nurse Practitioner (Pediatrics)
161 FORT WASHINGTON AVE, 7TH FLOOR
NEW YORK, NY 10032
New York County (212) 305-2466
BARBARA THERESE ROBBINS APRN-BC
Nurse Practitioner (Family)
161 FORT WASHINGTON AVE, ROOM 661
NEW YORK, NY 10032
New York County (212) 342-0886
VARSHA JOHN
Student in an Organized Health Care Education/Training Program
161 FORT WASHINGTON AVE
NEW YORK, NY 10032
New York County (212) 305-5221
MICHELLE BENGAL PA
Physician Assistant
161 FORT WASHINGTON AVE
NEW YORK, NY 10032
New York County (818) 614-2424
DR. NICOLA CORVAJA M.D.
Internal Medicine (Interventional Cardiology)
161 FORT WASHINGTON AVE
NEW YORK, NY 10032
New York County (212) 342-3616
RACHEL CONYBEARE N.P.
Nurse Practitioner (Adult Health)
161 FORT WASHINGTON AVE, HERBERT IRVING PAVILION ROOM # 903
NEW YORK, NY 10032
New York County (212) 305-5275
DR. SUNEETA KRISHNAREDDY MD
Internal Medicine (Gastroenterology)
161 FORT WASHINGTON AVE
NEW YORK, NY 10032
New York County (212) 305-2323
DAVID M WEINER MD
Urology
161 FORT WASHINGTON AVE, 11TH FLOOR
NEW YORK, NY 10032
New York County (212) 305-0114

Frequently Asked Questions NPPES & CMS

Common questions about this NPI record, answered from the official NPPES registry and CMS datasets shown on this page.

What is Lionel Grossbard's NPI number?

The NPI number for Lionel Grossbard is 1205877818. It was assigned to this individual provider in the NPPES registry on June 8, 2006.

Where is Lionel Grossbard located?

Lionel Grossbard practices at 161 Fort Washington Ave, New York, NY 10032. The listed phone number is (212) 305-8399.

What is Lionel Grossbard's specialty?

The primary specialty registered for this NPI is Internal Medicine, specializing in Hematology & Oncology, with taxonomy code 207RH0003X.

When was this NPI record last updated?

The NPPES record for Lionel Grossbard was last updated on July 13, 2026. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 55 days ago. If this record has changed at CMS more recently, you can request an on-demand re-check against the live CMS registry, directly from this page.