Stephen J. Sebastian, M.D.
Emergency Medicine Physician · Wrentham, MA
Stephen J. Sebastian, M.D. is an emergency medicine physician with a practice address in Wrentham, Massachusetts, and NPI 1366480584, issued on Jun 2, 2006. Check the license (Massachusetts 75127, as entered in NPPES) on the Massachusetts Board of Registration in Medicine; the Medicare figures below come from public CMS files.
- Name
- Stephen J. Sebastian
- Credential
- M.D.
- Primary taxonomy
- Emergency Medicine Physician 207P00000X
- License number
- 75127 MA
Self-reported in NPPES; status is on the state search - Practice location
- 885 Franklin St, Wrentham, MA 02093
- Phone
- (978) 466-2994
- Enumerated
- Jun 2, 2006
- Record last updated
- Oct 29, 2021 (not updated in 5 years: call before relying on the address or phone)
- Medicaid ID
- 110051133A MA
- Entity
- Type 1 · individual
8 nearest emergency medicine physician records → All 1,829 in Massachusetts → Look up another NPI →
Verify Stephen J. Sebastian in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersMassachusetts Board of Registration in Medicine
Search for license 75127Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
93% fewer Medicare Part D claims than the average emergency medicine physician in 2024
15 Medicare Part D claims, against an average of 226 among the 54,106 providers of this specialty who prescribed in Part D.
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.
Stephen J. Sebastian among 1,829 emergency medicine physician records in Massachusetts
Stephen J. Sebastian, M.D. is one of 1,829 emergency medicine physician records with a practice address in Massachusetts. 82% 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 9% of them.
- NPI issued2006 · 9% of these records are older, 59% newer
- In a Medicare fileYes · 82% of these records are
- In the CMS Doctors and Clinicians fileNo · 66% of these records are
- Record last updated2021 · 57% of these records were not updated in five years or more
Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 207P00000X and a Massachusetts practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
Emergency Medicine Physician providers in Massachusetts
There are 1,829 emergency medicine physician records in Massachusetts.
All 1,829 in Massachusetts → Every provider in Wrentham → Emergency Medicine Physician nationwide →
The 8 emergency medicine physician records with the nearest ZIP codes
- Michael Doyle, M.D.Boston, MA 021081871639856
- Yan Au Yeung, MDBoston, MA 021091720136716
- Jamila Davison, M.D.Boston, MA 021091174606123
- Sara TrepanierBoston, MA 021091881796126
- Brien Barnewolt, M.D.Boston, MA 021111801980198
- Augustus Colangelo, M.D.Boston, MA 021111285671982
- Amir Darvish, MDBoston, MA 021111386717783
- Theresa Marie Gabana, M.D.Boston, MA 021111730226093
Common questions
What is Stephen J. Sebastian, M.D.'s NPI number?
Stephen J. Sebastian, M.D.'s National Provider Identifier (NPI) is 1366480584, issued on Jun 2, 2006. An NPI identifies a provider in billing; it is not a license.
Where is Stephen J. Sebastian, M.D. located?
The NPPES record lists a practice address at 885 Franklin St, Wrentham, MA, 02093. Phone: (978) 466-2994. Providers update this record themselves, so call before visiting.
How can I verify Stephen J. Sebastian, M.D.'s license?
NPPES lists Massachusetts license number 75127, as entered by the provider. Search the Massachusetts Board of Registration in Medicine at https://findmydoctor.mass.gov/. The NPPES record confirms identity only; the state search shows license status, expiration and public orders.
How much does Stephen J. Sebastian, M.D. prescribe under Medicare Part D?
In 2024, Stephen J. Sebastian, M.D. had 15 Medicare Part D claims; the average among emergency medicine physician prescribers was 226. 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.