Stephen J. John, M.D.
Family Medicine Physician · Riverhead, NY
Stephen J. John, M.D. is a family medicine physician with a practice address in Riverhead, New York, and NPI 1942481056, issued on Nov 16, 2007. Check the license (New York 244662-1, 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. John
- Credential
- M.D.
- Primary taxonomy
- Family Medicine Physician 207Q00000X
- License number
- 244662-1 NY
Self-reported in NPPES; status is on the state search - Practice location
- 100 Center Dr, Riverhead, NY 11901
- Phone
- (631) 852-1989
- Enumerated
- Nov 16, 2007
- Record last updated
- Nov 16, 2007 (not updated in 19 years: call before relying on the address or phone)
- Medicare enrollment
- Enrolled (PECOS I20140327001659); accepts Medicare assignment
- Entity
- Type 1 · individual
8 nearest family medicine physician records → All 6,417 in New York → Look up another NPI →
Also registered at 100 Center Dr
A shared address usually means a shared clinic or building; it does not show who employs whom.
- Maureen Crowley, MD, MPHInternal Medicine Physician1346324209
- Amy Malave, A.N.P., G.N.P.Adult Health Nurse Practitioner1992075329
- Kim Scarpati, PAMedical Physician Assistant1821363458
- Thomas Troiano, M.D.Psychiatry Physician1760718829
Verify Stephen J. John 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 244662-1Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
98% fewer Medicare Part D claims than the average family medicine physician in 2024
55 Medicare Part D claims for 29 beneficiaries, against an average of 3,544 among the 117,163 providers of this specialty who prescribed in Part D. 13 claims were for opioids.
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.
Bills Medicare through one group practice
- Central Suffolk HospitalRiverhead, NY
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
Stephen J. John among 6,417 family medicine physician records in New York
Stephen J. John, M.D. is one of 6,417 family medicine physician records with a practice address in New York. 81% of them appear in a Medicare file (Part D prescribing, MIPS, Open Payments or Medicare group billing); this one does. Its NPI, issued in 2007, is newer than 42% of them.
- NPI issued2007 · 42% of these records are older, 51% newer
- In a Medicare fileYes · 81% of these records are
- In the CMS Doctors and Clinicians fileYes · 65% of these records are
- Graduated1989 · median 2007 among the 4,188 with a school on file
- Record last updated2007 · 58% of these records were not updated in five years or more
Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 207Q00000X and a New York practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
25 family medicine physician records list a practice address in Riverhead
They are 25 of the 982 NPPES records with a practice address in Riverhead, and 6,417 family medicine physician records in New York.
All 6,417 in New York → Every provider in Riverhead → Family Medicine Physician nationwide →
The 8 family medicine physician records with the nearest ZIP codes
- Guirlaine Blot-Sanon, D.ORiverhead, NY 119011588818504
- Bellamy Brook, D.O. P.C.Riverhead, NY 119011477511749
- Joy Curran, DORiverhead, NY 119011063723112
- Mildred Garcia, MDRiverhead, NY 119011750464673
- Mette Larsen, DORiverhead, NY 119011205947074
- Carmela Lovecchio, DO, MSRiverhead, NY 119011831401306
- Evan Nadal, DORiverhead, NY 119011619946548
- Blaise Napolitano, M.D.Riverhead, NY 119011033318449
Common questions
What is Stephen J. John, M.D.'s NPI number?
Stephen J. John, M.D.'s National Provider Identifier (NPI) is 1942481056, issued on Nov 16, 2007. An NPI identifies a provider in billing; it is not a license.
Where is Stephen J. John, M.D. located?
The NPPES record lists a practice address at 100 Center Dr, Riverhead, NY, 11901. Phone: (631) 852-1989. Providers update this record themselves, so call before visiting.
How can I verify Stephen J. John, M.D.'s license?
NPPES lists New York license number 244662-1, 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. John, M.D. prescribe under Medicare Part D?
In 2024, Stephen J. John, M.D. had 55 Medicare Part D claims for 29 beneficiaries; the average among family medicine physician prescribers was 3,544. Part D covers Medicare prescriptions only.
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.