Stephen Mastrianni, DO
Internal Medicine Physician · Brooklyn, NY
Stephen Mastrianni, DO is an internal medicine physician with a practice address in Brooklyn, New York, and NPI 1174518211, issued on Sep 14, 2005. Check the license (New York 183073, as entered in NPPES) on the NYS Education Department, Office of the Professions; the Medicare figures below come from public CMS files.
- Name
- Stephen Mastrianni
- Credential
- DO
- Primary taxonomy
- Internal Medicine Physician 207R00000X
- License number
- 183073 NY
Self-reported in NPPES; status is on the state search - Practice location
- 1833 Benson Ave, Brooklyn, NY 11214
- Phone
- (718) 236-3880
- Enumerated
- Sep 14, 2005
- Record last updated
- Dec 5, 2007 (not updated in 19 years: call before relying on the address or phone)
- Medicare enrollment
- Enrolled (PECOS I20080508000566); accepts Medicare assignment
- Medical or professional school
- New York College Of Osteo Medicine Of New York Institute Of Technology, 1989
- Telehealth
- Offers telehealth (CMS)
- Entity
- Type 1 · individual
8 nearest internal medicine physician records → All 12,067 in New York → Look up another NPI →
Verify Stephen Mastrianni in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersNYS Education Department, Office of the Professions
Search for license 183073Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
5.8 times the Medicare Part D claims of the average internal medicine physician in 2024
18,414 Medicare Part D claims for 653 beneficiaries, against an average of 3,176 among the 108,855 providers of this specialty who prescribed in Part D. Brand-name drugs were 16% of claims. 500 claims were for opioids.
Most prescribed
- Atorvastatin Calcium902 claims
- Levothyroxine Sodium727 claims
- Amlodipine Besylate626 claims
- Eliquis512 claims
- Furosemide489 claims
- Losartan Potassium466 claims
Source: CMS Medicare Part D Prescribers by Provider and Drug, 2024 (data.cms.gov). Part D covers prescriptions for Medicare patients only; drugs with fewer than 11 claims are not published.
The MIPS final score for 2023 (Medicare payment program): 91.3 of 100
The Merit-based Incentive Payment System score is reported for this clinician. Four categories are weighted into the final score; the average among 454,083 clinicians with a measured score was 83.5.
Source: CMS Quality Payment Program, MIPS performance year 2023; category weights for 2023 (qpp.cms.gov).
Bills Medicare through one group practice
- Physicians OF University Hospital PCStaten Island, NY
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
Stephen Mastrianni among 12,067 internal medicine physician records in New York
Stephen Mastrianni, DO is one of 12,067 internal medicine physician records with a practice address in New York. 79% of them appear in a Medicare file (Part D prescribing, MIPS, Open Payments or Medicare group billing); this one does. Its NPI, issued in 2005, is newer than 0% of them.
- NPI issued2005 · 0% of these records are older, 92% newer
- In a Medicare fileYes · 79% of these records are
- In the CMS Doctors and Clinicians fileYes · 60% of these records are
- Graduated1989 · median 2002 among the 7,221 with a school on file
- Record last updated2007 · 61% of these records were not updated in five years or more
Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 207R00000X and a New York practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
1,497 internal medicine physician records list a practice address in Brooklyn
They are 1,497 of the 64,057 NPPES records with a practice address in Brooklyn, and 12,067 internal medicine physician records in New York.
All 12,067 in New York → Every provider in Brooklyn → Internal Medicine Physician nationwide →
The 8 internal medicine physician records with the nearest ZIP codes
- Irine Corst, MDBrooklyn, NY 112141386783132
- Irina Gekker, MDBrooklyn, NY 112141225090137
- Lubov Klimova, MDBrooklyn, NY 112141477653798
- Marc Leaf, MDBrooklyn, NY 112141700988797
- Orrin Lippoff, MDBrooklyn, NY 112141225038664
- Anming Luo, M.D.Brooklyn, NY 112141821162611
- Hanan Miller, M.D.Brooklyn, NY 112141437143377
- Ralph Peluso, MDBrooklyn, NY 112141093716987
Common questions
What is Stephen Mastrianni, DO's NPI number?
Stephen Mastrianni, DO's National Provider Identifier (NPI) is 1174518211, issued on Sep 14, 2005. An NPI identifies a provider in billing; it is not a license.
Where is Stephen Mastrianni, DO located?
The NPPES record lists a practice address at 1833 Benson Ave, Brooklyn, NY, 11214. Phone: (718) 236-3880. Providers update this record themselves, so call before visiting.
How can I verify Stephen Mastrianni, DO's license?
NPPES lists New York license number 183073, as entered by the provider. Search the NYS Education Department, Office of the Professions at https://www.op.nysed.gov/services/verifications/online-verification-searches. The NPPES record confirms identity only; the state search shows license status, expiration and public orders.
How much does Stephen Mastrianni, DO prescribe under Medicare Part D?
In 2024, Stephen Mastrianni, DO had 18,414 Medicare Part D claims for 653 beneficiaries; the average among internal medicine physician prescribers was 3,176. Part D covers Medicare prescriptions only.
What is Stephen Mastrianni, DO's MIPS final score?
The 2023 MIPS final score is 91.3 of 100. The average among 454,083 clinicians with a measured score was 83.5.
Source: CMS National Plan and Provider Enumeration System (NPPES), file of Aug 9, 2026 (NPPES files on CMS.gov); NUCC Health Care Provider Taxonomy. Medicare files from data.cms.gov. An NPI identifies who bills; it is not a license.
Figures on PlainDoctor are read from the federal files each page names (CMS NPPES, Medicare Part D, MIPS, Open Payments; the HHS-OIG exclusion list only as counts) and from Census population estimates, with the file date shown beside them. See our editorial standards & corrections policy, the methodology behind these numbers, or report a data error. Data current as of Aug 9, 2026.