Provider records sourced from NPPES (CMS National Plan & Provider Enumeration System). Data current as of October 4, 2026.
NPIDirectory

Dr. Howard A Greller, MD

Individual provider Emergency Medicine Physician · NPI 1376631085

Dr. Howard A Greller, MD practises Emergency Medicine in Newark, New Jersey. Graduated from New York University School of Medicine in 1998, 28 years ago. Practices with University Physician Associates of New Jersey Inc, a 377-clinician group and accepts Medicare assignment. Licensed in New Jersey and New York.

Years since qualifying
28
Trained at
New York University School of Medicine
Licensed in
NJ, NY
In the registry since
2006
Specialties on file
6
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

150 Bergen St Dept OF
Newark, NJ 07103-2496
Phone: (973) 972-9280
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Pin is approximate — placed at the ZIP-code centre, not the exact door.

Specialties & licences

Medical Toxicology (Emergency Medicine) Physician (primary) Taxonomy 207PT0002X · Licence 25MA11394200 (NJ)
Emergency Medicine Physician Taxonomy 207P00000X · Licence 25MA11394200 (NJ)
Addiction Medicine (Preventive Medicine) Physician Taxonomy 2083A0300X · Licence 61-20314 (NY)
Emergency Medicine Physician Taxonomy 207P00000X · Licence 224207 (NY)
Addiction Medicine (Preventive Medicine) Physician Taxonomy 2083A0300X · Licence 25MA11394200 (NJ)
Medical Toxicology (Emergency Medicine) Physician Taxonomy 207PT0002X · Licence 224207 (NY)

Record details

NPI number1376631085
Entity typeIndividual (Type 1)
GenderMale
Credentials MD
Sole proprietorNo
NPI enumeratedOctober 10, 2006
Last updated in NPPESJuly 16, 2026
Certification dateJuly 16, 2026

Medicare enrollment

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

Medicare specialtyEMERGENCY MEDICINE
Also practisesADDICTION MEDICINE, MEDICAL TOXICOLOGY
Medical schoolNEW YORK UNIVERSITY SCHOOL OF MEDICINE
Graduated 1998 (28 years in practice)
Group practice University Physician Associates Of New Jersey Inc — 377 clinicians
Accepts Medicare assignment Yes — accepts the Medicare-approved amount

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 patients42
Services billed 43 a service is one billed item, such as a visit, a test or a procedure
Average patient age69

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.

Colleagues at University Physician Associates of New Jersey Inc

Clinicians the CMS Doctors & Clinicians file lists under the same group practice. CMS counts 377 clinicians in the practice; 12 are shown here.

Other providers in Newark