Provider records sourced from NPPES (CMS National Plan & Provider Enumeration System). Data current as of August 10, 2026.
NPIDirectory

Dr. Israel Robert Grossman, MD

Individual provider Hematology & Oncology Physician · NPI 1255311445

Dr. Israel Robert Grossman, MD practises Hematology/Oncology in Livingston, New Jersey. Graduated from Yale University School of Medicine in 1993, 33 years ago. Practices with Barnabas Health Medical Group PC, a 1,025-clinician group, accepts Medicare assignment and offers telehealth. Licensed in New Jersey.

Years since qualifying
33
Trained at
Yale University School of Medicine
Licensed in
NJ
In the registry since
2006
What do these letters mean?
MD — Doctor of Medicine
A physician who completed allopathic medical school.

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Practice location Address checks out

94 Old Short Hills Rd
Livingston, NJ 07039-5672 Not confirmed with CMS for 13 years — call before visiting
Phone: (973) 322-5200
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Pin is approximate — placed at the ZIP-code centre, not the exact door.

Specialties & licences

Hematology & Oncology Physician (primary) Taxonomy 207RH0003X · Licence 25MA07279900 (NJ)

Record details

NPI number1255311445
Entity typeIndividual (Type 1)
GenderMale
Credentials MD
Sole proprietorNo
NPI enumeratedJanuary 23, 2006
Last updated in NPPESJune 11, 2013

Medicare enrollment

From the CMS Doctors & Clinicians file — this clinician is enrolled in Medicare.

Medicare specialtyHEMATOLOGY/ONCOLOGY
Medical schoolYALE UNIVERSITY SCHOOL OF MEDICINE
Graduated 1993 (33 years in practice)
Group practice Barnabas Health Medical Group Pc — 1025 clinicians
Accepts Medicare assignment Yes — accepts the Medicare-approved amount
TelehealthOffers telehealth services

Medicare patients and services, 2024

From the CMS Medicare Physician & Other Practitioners file for calendar year 2024. It counts Original Medicare patients only, so a practice that mostly sees Medicare Advantage or privately insured patients looks smaller here than it is.

Medicare patients466
Services billed 1,892 a service is one billed item, such as a visit, a test or a procedure
Average patient age75

Dollar amounts are not shown. What Medicare pays a practice is gross billings, before staff, premises and tax and including the cost of any drugs it administers, so it is not what a clinician earns.

Practises at

Facilities the CMS Facility Affiliation file lists for this clinician. Those with a page here are linked.

Colleagues at Barnabas Health Medical Group PC

Clinicians the CMS Doctors & Clinicians file lists under the same group practice. CMS counts 1025 clinicians in the practice; 12 are shown here.

Other providers in Livingston