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

Stephen Mastrianni, DO

Individual provider Internal Medicine Physician · NPI 1174518211

Stephen Mastrianni, DO practises Internal Medicine in Brooklyn, New York. Graduated from New York College of Osteo Medicine of New York Institute of Technology in 1989, 37 years ago. Practices with Physicians of University Hospital PC, a 58-clinician group, accepts Medicare assignment and offers telehealth. Licensed in New York.

Years since qualifying
37
Trained at
New York College of Osteo Medicine of New York Institute of Technology
Licensed in
NY
In the registry since
2005
What do these letters mean?
DO — Doctor of Osteopathic Medicine
A fully licensed physician, trained like an MD with additional musculoskeletal training. Equivalent practice rights in all 50 states.

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Practice location Address checks out

1833 Benson Ave
Brooklyn, NY 11214-3817 Not confirmed with CMS for 18 years — call before visiting
Phone: (718) 236-3880
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Pin is approximate — placed at the ZIP-code centre, not the exact door.

Specialties & licences

Internal Medicine Physician (primary) Taxonomy 207R00000X · Licence 183073 (NY)

Record details

NPI number1174518211
Entity typeIndividual (Type 1)
GenderMale
Credentials DO
Sole proprietorNo
NPI enumeratedSeptember 14, 2005
Last updated in NPPESDecember 5, 2007

Medicare enrollment

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

Medicare specialtyINTERNAL MEDICINE
Medical schoolNEW YORK COLLEGE OF OSTEO MEDICINE OF NEW YORK INSTITUTE OF TECHNOLOGY
Graduated 1989 (37 years in practice)
Group practice Physicians Of University Hospital Pc — 58 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 patients514
Services billed 3,945 a service is one billed item, such as a visit, a test or a procedure
Average patient age81

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 Physicians of University Hospital PC

Clinicians the CMS Doctors & Clinicians file lists under the same group practice. CMS counts 58 clinicians in the practice; 12 are shown here.

Other providers in Brooklyn