Andrew J. Sebastyan, MD
Family Medicine Physician · Nashua, NH
Andrew J. Sebastyan, MD is a family medicine physician with a practice address in Nashua, New Hampshire, and NPI 1992790745, issued on Sep 19, 2005. Check the license on the New Hampshire Board of Medicine; the Medicare figures below come from public CMS files.
- Name
- Andrew J. Sebastyan
- Credential
- MD
- Primary taxonomy
- Family Medicine Physician 207Q00000X
- License numbers
- 180047 SC
2005-00315 NC
Self-reported in NPPES; status is on the state search - Practice location
- 173 Daniel Webster Hwy, Nashua, NH 03060
- Phone
- (603) 891-4804
- Enumerated
- Sep 19, 2005
- Record last updated
- Jan 21, 2015 (not updated in 11 years: call before relying on the address or phone)
- Medicare enrollment
- Enrolled (PECOS I20241205000783); accepts Medicare assignment
- Entity
- Type 1 · individual
8 nearest family medicine physician records → All 816 in New Hampshire → Look up another NPI →
Also registered at 173 Daniel Webster Hwy
A shared address usually means a shared clinic or building; it does not show who employs whom.
- Karin Adelman, M.D.Family Medicine Physician1982674354
- Ilda Betancur RestrepoInternal Medicine Physician1255560272
- Mitchell Cohen, M.D.Internal Medicine Physician1972589208
- Nancy Conway-Clancy, PA-CPhysician Assistant1467478958
- Kimberly Delrossi, APRNFamily Nurse Practitioner1922345909
- Christine Dutton, APRNNurse Practitioner1700939188
Verify Andrew J. Sebastyan in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersNew Hampshire Board of MedicineCheck the board
- 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
80% more Medicare Part D claims than the average family medicine physician in 2024
6,386 Medicare Part D claims for 647 beneficiaries, against an average of 3,544 among the 117,163 providers of this specialty who prescribed in Part D. Brand-name drugs were 13% of claims. 155 claims were for opioids.
Most prescribed
- Rosuvastatin Calcium495 claims
- Atorvastatin Calcium365 claims
- Amlodipine Besylate265 claims
- Pantoprazole Sodium227 claims
- Lisinopril215 claims
- Levothyroxine Sodium180 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.
Bills Medicare through one group practice
- North Country Hospital And Health Center IncBarton, VT
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
Andrew J. Sebastyan among 816 family medicine physician records in New Hampshire
Andrew J. Sebastyan, MD is one of 816 family medicine physician records with a practice address in New Hampshire. 74% 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, 87% newer
- In a Medicare fileYes · 74% of these records are
- In the CMS Doctors and Clinicians fileYes · 61% of these records are
- Graduated1985 · median 2003 among the 498 with a school on file
- Record last updated2015 · 62% 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 Hampshire practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
41 family medicine physician records list a practice address in Nashua
They are 41 of the 3,140 NPPES records with a practice address in Nashua, and 816 family medicine physician records in New Hampshire.
All 816 in New Hampshire → Every provider in Nashua → Family Medicine Physician nationwide →
The 8 family medicine physician records with the nearest ZIP codes
- Karin Adelman, M.D.Nashua, NH 030601982674354
- Kathleen Corrigan, MDNashua, NH 030601871542423
- Jennifer Funaioli-Sheehan, D.O.Nashua, NH 030601609816966
- Birgit Houston, M.D.Nashua, NH 030601881664274
- Shanta Mahmudi, MDNashua, NH 030601528061637
- Harry McKinnon, MDNashua, NH 030601144210410
- Elizabeth McMillan, M.D.Nashua, NH 030601699877134
- Mark Messier, MDNashua, NH 030601104933035
Common questions
What is Andrew J. Sebastyan, MD's NPI number?
Andrew J. Sebastyan, MD's National Provider Identifier (NPI) is 1992790745, issued on Sep 19, 2005. An NPI identifies a provider in billing; it is not a license.
Where is Andrew J. Sebastyan, MD located?
The NPPES record lists a practice address at 173 Daniel Webster Hwy, Nashua, NH, 03060. Phone: (603) 891-4804. Providers update this record themselves, so call before visiting.
How can I verify Andrew J. Sebastyan, MD's license?
Search the New Hampshire Board of Medicine at https://www.oplc.nh.gov/board-medicine. The NPPES record confirms identity only; the state search shows license status, expiration and public orders.
How much does Andrew J. Sebastyan, MD prescribe under Medicare Part D?
In 2024, Andrew J. Sebastyan, MD had 6,386 Medicare Part D claims for 647 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.