John Sommer, MD
Internal Medicine Physician · Brunswick, ME
John Sommer, MD is an internal medicine physician with a practice address in Brunswick, Maine, and NPI 1275732364, issued on Jul 17, 2007. Check the license (Maine MD18801, as entered in NPPES) on the Maine Board of Licensure in Medicine; the Medicare figures below come from public CMS files.
- Name
- John Sommer
- Credential
- MD
- Primary taxonomy
- Internal Medicine Physician 207R00000X
- License number
- MD18801 ME
Self-reported in NPPES; status is on the state search - Practice location
- 114 Bath RD, Brunswick, ME 04011
- Phone
- (207) 798-4400
- Enumerated
- Jul 17, 2007
- Record last updated
- Oct 22, 2021 (not updated in 5 years: call before relying on the address or phone)
- Fax
- (207) 798-4452
- Medicaid ID
- 1275732364 ME
- Medicare enrollment
- Enrolled (PECOS I20110818000015); accepts Medicare assignment
- Entity
- Type 1 · individual
8 nearest internal medicine physician records → All 597 in Maine → Look up another NPI →
Also registered at 114 Bath RD
A shared address usually means a shared clinic or building; it does not show who employs whom.
- Julianna Anderson, MSN, APRN, FNP-CFamily Nurse Practitioner1841907607
- Robin BaierNurse Practitioner1891189288
- Christine Bender, D.O.Pediatric Sports Medicine Physician1932547668
- Hillary Benuck, DPTPhysical Therapist1245772094
- Nubia Calabi, MDPediatrics Physician1861804478
- Lon CameronPhysician Assistant1497108245
Verify John Sommer in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersMaine Board of Licensure in Medicine
Search for license MD18801Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
82% more Medicare Part D claims than the average internal medicine physician in 2024
5,778 Medicare Part D claims for 482 beneficiaries, against an average of 3,176 among the 108,855 providers of this specialty who prescribed in Part D. Brand-name drugs were 12% of claims. 165 claims were for opioids.
Most prescribed
- Atorvastatin Calcium374 claims
- Lisinopril303 claims
- Losartan Potassium217 claims
- Amlodipine Besylate206 claims
- Levothyroxine Sodium195 claims
- Rosuvastatin Calcium189 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
- Martin's Point Health Care, Inc.Brunswick, ME
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
John Sommer among 597 internal medicine physician records in Maine
John Sommer, MD is one of 597 internal medicine physician records with a practice address in Maine. 77% 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 56% of them.
- NPI issued2007 · 56% of these records are older, 39% newer
- In a Medicare fileYes · 77% of these records are
- In the CMS Doctors and Clinicians fileYes · 62% of these records are
- Graduated2007 · median 2005 among the 369 with a school on file
- Record last updated2021 · 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 207R00000X and a Maine practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
18 internal medicine physician records list a practice address in Brunswick
They are 18 of the 981 NPPES records with a practice address in Brunswick, and 597 internal medicine physician records in Maine.
All 597 in Maine → Every provider in Brunswick → Internal Medicine Physician nationwide →
The 8 internal medicine physician records with the nearest ZIP codes
- Justin Bussone, D.O.Brunswick, ME 040111184730186
- Laura Dalsanto, M.D.Brunswick, ME 040111154686582
- Geeta Godara, MDBrunswick, ME 040111366676256
- Nancy Goodwin, M.D.Brunswick, ME 040111326100512
- Timothy Howe, M.D.Brunswick, ME 040111083776371
- Paul Hyman, MDBrunswick, ME 040111255467684
- Daniel Morgenstern, MDBrunswick, ME 040111336153865
- Hanna Napiorkowska, MDBrunswick, ME 040111821156886
Common questions
What is John Sommer, MD's NPI number?
John Sommer, MD's National Provider Identifier (NPI) is 1275732364, issued on Jul 17, 2007. An NPI identifies a provider in billing; it is not a license.
Where is John Sommer, MD located?
The NPPES record lists a practice address at 114 Bath RD, Brunswick, ME, 04011. Phone: (207) 798-4400. Providers update this record themselves, so call before visiting.
How can I verify John Sommer, MD's license?
NPPES lists Maine license number MD18801, 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 John Sommer, MD prescribe under Medicare Part D?
In 2024, John Sommer, MD had 5,778 Medicare Part D claims for 482 beneficiaries; the average among internal medicine physician prescribers was 3,176. 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.