Peter Westervelt, MD
Medical Oncology Physician · Brunswick, ME
Peter Westervelt, MD is a medical oncology physician with a practice address in Brunswick, Maine, and NPI 1043292246, issued on Nov 15, 2005. Check the license (Maine MD27026, as entered in NPPES) on the Maine Board of Licensure in Medicine; the Medicare figures below come from public CMS files.
- Name
- Peter Westervelt
- Credential
- MD
- Primary taxonomy
- Medical Oncology Physician 207RX0202X
- License numbers
- MD27026 ME
211561 MA
2006008771 MO
Self-reported in NPPES; status is on the state search - Practice location
- 329 Maine St, Brunswick, ME 04011
- Phone
- (207) 373-2266
- Enumerated
- Nov 15, 2005
- Record last updated
- Nov 28, 2023
- Fax
- (314) 454-5902
- Medicaid ID
- 209744622 MO
- Medicare enrollment
- Enrolled (PECOS I20231003001971); accepts Medicare assignment
- Medical or professional school
- Washington University School Of Medicine, 1992
- Entity
- Type 1 · individual
8 nearest medical oncology physician records → All 22 in Maine → Look up another NPI →
Also registered at 329 Maine St
A shared address usually means a shared clinic or building; it does not show who employs whom.
- Joan Alford, RD, LD, CDERegistered Dietitian1740217231
- Jessica Bassett, MPTPhysical Therapist1164540688
- Adam Decatur, PHARMDPharmacist1174895825
- Peter Dipietrantonio, DOEmergency Medicine Physician1942424114
- Robert Finegold, M.D.Diagnostic Radiology Physician1366446106
- Nancy Goodwin, M.D.Internal Medicine Physician1326100512
Verify Peter Westervelt in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersMaine Board of Licensure in Medicine
Search for license MD27026Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
68% fewer Medicare Part D claims than the average medical oncology physician in 2024
228 Medicare Part D claims for 59 beneficiaries, against an average of 703 among the 4,230 providers of this specialty who prescribed in Part D. Brand-name drugs were 11% of claims.
Most prescribed
- Valacyclovir28 claims
- Acyclovir18 claims
- Sulfamethoxazole-Trimethoprim14 claims
- Ciprofloxacin Hcl12 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 practice group's MIPS final score for 2023 (Medicare payment program): 79.3 of 100
The Merit-based Incentive Payment System score is reported for the practice group, not for one clinician alone. 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, group reporting; category weights for 2023 (qpp.cms.gov).
Bills Medicare through 2 group practices
- MainehealthBrunswick, ME
- Massachusetts General Physicians Organization IncBoston, MA
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
Peter Westervelt among 22 medical oncology physician records in Maine
Peter Westervelt, MD is one of 22 medical oncology physician records with a practice address in Maine. 68% 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, 95% newer
- In a Medicare fileYes · 68% of these records are
- In the CMS Doctors and Clinicians fileYes · 55% of these records are
- Graduated1992 · median 1992 among the 12 with a school on file
- Record last updated2023 · 68% of these records were not updated in five years or more
Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 207RX0202X and a Maine practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
Medical Oncology Physician providers in Maine
There are 22 medical oncology physician records in Maine.
All 22 in Maine → Every provider in Brunswick → Medical Oncology Physician nationwide →
The 8 medical oncology physician records with the nearest ZIP codes
- John Gullo, MDBrunswick, ME 040111700865243
- Thomas Keating, MDBrunswick, ME 040111609847524
- George Polkinghorn, MDBrunswick, ME 040111033182019
- Peter Rubin, M.D.Biddeford, ME 040051912950411
- Eva Zaslavsky, M.D.Biddeford, ME 040051003910555
- Rebecca Eisenberg, M.D.Sanford, ME 040731518080639
- Daniel Hayes, MDScarborough, ME 040741245200153
- Susan Miesfeldt, MDScarborough, ME 040741043281959
Common questions
What is Peter Westervelt, MD's NPI number?
Peter Westervelt, MD's National Provider Identifier (NPI) is 1043292246, issued on Nov 15, 2005. An NPI identifies a provider in billing; it is not a license.
Where is Peter Westervelt, MD located?
The NPPES record lists a practice address at 329 Maine St, Brunswick, ME, 04011. Phone: (207) 373-2266. Providers update this record themselves, so call before visiting.
How can I verify Peter Westervelt, MD's license?
NPPES lists Maine license number MD27026, 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 Peter Westervelt, MD prescribe under Medicare Part D?
In 2024, Peter Westervelt, MD had 228 Medicare Part D claims for 59 beneficiaries; the average among medical oncology physician prescribers was 703. Part D covers Medicare prescriptions only.
What is Peter Westervelt, MD's MIPS final score?
The 2023 MIPS final score is 79.3 of 100, reported for the practice group. 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.