Jonathan L. Gasper, MD
Family Medicine Physician · Winthrop, ME
Jonathan L. Gasper, MD is a family medicine physician with a practice address in Winthrop, Maine, and NPI 1932133592, issued on Jul 10, 2006. Check the license (Maine 018626, as entered in NPPES) on the Maine Board of Licensure in Medicine; the Medicare figures below come from public CMS files.
- Name
- Jonathan L. Gasper
- Credential
- MD
- Primary taxonomy
- Family Medicine Physician 207Q00000X
- License numbers
- 018626 ME
9601152 NC
Self-reported in NPPES; status is on the state search - Practice location
- 149 Main St, Winthrop, ME 04364
- Phone
- (207) 624-3800
- Enumerated
- Jul 10, 2006
- Record last updated
- Oct 16, 2012 (not updated in 14 years: call before relying on the address or phone)
- Fax
- (207) 624-3845
- Medicaid ID
- 5904978 NC
- Entity
- Type 1 · individual
8 nearest family medicine physician records → All 1,172 in Maine → Look up another NPI →
Also registered at 149 Main St
A shared address usually means a shared clinic or building; it does not show who employs whom.
- Peter Dewolfe, MDFamily Medicine Physician1932175742
- Christine Fletcher, NP-CFamily Nurse Practitioner1497068506
- Carol Mansfield, MDPediatrics Physician1831165422
- Rochelle Murphy, FNP-CFamily Nurse Practitioner1245585108
- Richard Possee, PAPhysician Assistant1013983758
- Mark Rolfe, MDFamily Medicine Physician1821064338
Verify Jonathan L. Gasper in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersMaine Board of Licensure in Medicine
Search for license 018626Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
2.4 times the Medicare Part D claims of the average family medicine physician in 2024
8,464 Medicare Part D claims for 604 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. 667 claims were for opioids.
Most prescribed
- Atorvastatin Calcium370 claims
- Oxycodone Hcl343 claims
- Levothyroxine Sodium299 claims
- Lisinopril254 claims
- Losartan Potassium244 claims
- Pantoprazole Sodium208 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.
Jonathan L. Gasper among 1,172 family medicine physician records in Maine
Jonathan L. Gasper, MD is one of 1,172 family medicine physician records with a practice address in Maine. 76% 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 6% of them.
- NPI issued2006 · 6% of these records are older, 52% newer
- In a Medicare fileYes · 76% of these records are
- In the CMS Doctors and Clinicians fileNo · 57% of these records are
- Record last updated2012 · 60% 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 Maine practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
7 family medicine physician records list a practice address in Winthrop
They are 7 of the 85 NPPES records with a practice address in Winthrop, and 1,172 family medicine physician records in Maine.
All 1,172 in Maine → Every provider in Winthrop → Family Medicine Physician nationwide →
The 8 family medicine physician records with the nearest ZIP codes
- Craig Curtis, MDWinthrop, ME 043641518976992
- Peter Dewolfe, MDWinthrop, ME 043641932175742
- Lara Ilyas, M.D.Winthrop, ME 043641902241425
- Mark Rolfe, MDWinthrop, ME 043641821064338
- April Shelton, MDWinthrop, ME 043641346216090
- Kirk Silver, MDWinthrop, ME 043641417092636
- Linda Hermans, MDRichmond, ME 043571043282619
- Elizabeth Rudenberg, DORichmond, ME 043571720350549
Common questions
What is Jonathan L. Gasper, MD's NPI number?
Jonathan L. Gasper, MD's National Provider Identifier (NPI) is 1932133592, issued on Jul 10, 2006. An NPI identifies a provider in billing; it is not a license.
Where is Jonathan L. Gasper, MD located?
The NPPES record lists a practice address at 149 Main St, Winthrop, ME, 04364. Phone: (207) 624-3800. Providers update this record themselves, so call before visiting.
How can I verify Jonathan L. Gasper, MD's license?
NPPES lists Maine license number 018626, as entered by the provider. Search the Maine Board of Licensure in Medicine at https://www.maine.gov/md/. The NPPES record confirms identity only; the state search shows license status, expiration and public orders.
How much does Jonathan L. Gasper, MD prescribe under Medicare Part D?
In 2024, Jonathan L. Gasper, MD had 8,464 Medicare Part D claims for 604 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.