Stephen J. Masiar, MD
Psychiatry Physician · Bay Shore, NY
Stephen J. Masiar, MD is a psychiatry physician with a practice address in Bay Shore, New York, and NPI 1336105345, issued on Apr 26, 2006. Check the license (New York 167773, as entered in NPPES) on the NYS Education Department, Office of the Professions; the Medicare figures below come from public CMS files.
- Name
- Stephen J. Masiar
- Credential
- MD
- Primary taxonomy
- Psychiatry Physician 2084P0800X
- License number
- 167773 NY
Self-reported in NPPES; status is on the state search - Practice location
- 301 E Main St, Bay Shore, NY 11706
- Phone
- (631) 675-4149
- Enumerated
- Apr 26, 2006
- Record last updated
- Oct 9, 2007 (not updated in 19 years: call before relying on the address or phone)
- Medicaid ID
- 01097814 NY
- Entity
- Type 1 · individual
8 nearest psychiatry physician records → All 6,589 in New York → Look up another NPI →
Also registered at 301 E Main St
A shared address usually means a shared clinic or building; it does not show who employs whom.
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- Tyler Acton, PACPhysician Assistant1528898707
- James Adams, RPA-CPhysician Assistant1811070105
- Abimbola AdebajoPrimary Care Nurse Practitioner1942684667
Verify Stephen J. Masiar 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 167773Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
72% fewer Medicare Part D claims than the average psychiatry physician in 2024
275 Medicare Part D claims for 49 beneficiaries, against an average of 1,000 among the 35,054 providers of this specialty who prescribed in Part D. Brand-name drugs were 5% of claims.
Most prescribed
- Fluoxetine Hcl18 claims
- Trazodone Hcl17 claims
- Alprazolam15 claims
- Gabapentin15 claims
- Bupropion Xl14 claims
- Buprenorphine-Naloxone11 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).
Stephen J. Masiar among 6,589 psychiatry physician records in New York
Stephen J. Masiar, MD is one of 6,589 psychiatry physician records with a practice address in New York. 72% of them appear in a Medicare file (Part D prescribing, MIPS, Open Payments or Medicare group billing); this one does. Its NPI, issued in 2006, is newer than 3% of them.
- NPI issued2006 · 3% of these records are older, 65% newer
- In a Medicare fileYes · 72% of these records are
- In the CMS Doctors and Clinicians fileNo · 39% of these records are
- Record last updated2007 · 65% of these records were not updated in five years or more
Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 2084P0800X and a New York practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
Psychiatry Physician providers in New York
There are 6,589 psychiatry physician records in New York.
All 6,589 in New York → Every provider in Bay Shore → Psychiatry Physician nationwide →
The 8 psychiatry physician records with the nearest ZIP codes
- Syed Ahmad, M.D.Bay Shore, NY 117061477695930
- Manjummelkudiyil Kuruvilla, MDBay Shore, NY 117061790816510
- Anand Nadkarni, M.D.Bay Shore, NY 117061982779864
- Anthony Pelosi, MDBay Shore, NY 117061215221858
- Asra Akber, M.D.Amityville, NY 117071215103759
- Karine Grigoryants, MDWest Babylon, NY 117041538465299
- Jack Nass, M.D.West Babylon, NY 117041467464255
- Samina Naz, MDNorth Bellmore, NY 117101154446052
Common questions
What is Stephen J. Masiar, MD's NPI number?
Stephen J. Masiar, MD's National Provider Identifier (NPI) is 1336105345, issued on Apr 26, 2006. An NPI identifies a provider in billing; it is not a license.
Where is Stephen J. Masiar, MD located?
The NPPES record lists a practice address at 301 E Main St, Bay Shore, NY, 11706. Phone: (631) 675-4149. Providers update this record themselves, so call before visiting.
How can I verify Stephen J. Masiar, MD's license?
NPPES lists New York license number 167773, 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 J. Masiar, MD prescribe under Medicare Part D?
In 2024, Stephen J. Masiar, MD had 275 Medicare Part D claims for 49 beneficiaries; the average among psychiatry physician prescribers was 1,000. Part D covers Medicare prescriptions only.
What is Stephen J. Masiar, MD'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.