Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum

Dr. John Sommer, MD

Internal Medicine Physician in Brunswick, ME · enumerated 2007.

Data current as of Jul 13, 2026 · sourced from CMS NPPES

National Provider Identifier

1275732364

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Registry record

Entity type Individual (Type 1)

Name Dr. John Sommer

Credential MD

Sex Male

Practice address 114 Bath Rd, Brunswick, ME, 04011

Phone (207) 798-4400

Fax (207) 798-4452

Enumeration date Jul 17, 2007

Last updated in NPPES Oct 22, 2021

Taxonomy & licenses

208000000X Pediatrics Physician Allopathic & Osteopathic Physicians · License MD18801 (ME) Secondary

207R00000X Internal Medicine Physician Allopathic & Osteopathic Physicians · License MD18801 (ME) Primary

MD · Doctor of Medicine: A physician who completed medical school (allopathic medicine), residency training, and state licensure. About the MD credential

Other identifiers

Identifier	Type	State	Issuer
1275732364	Medicaid	ME	-

What is an NPI number?

A National Provider Identifier (NPI) is a unique 10-digit number that CMS assigns to every U.S. healthcare provider and organization under HIPAA. Type 1 NPIs identify individual providers; Type 2 NPIs identify organizations. The NPI appears on insurance claims, prescriptions, and credentialing paperwork, and never changes, even if the provider moves or changes specialty.

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Frequently asked questions

How do I verify John Sommer's NPI record?

Cross-check NPI 1275732364 against the official CMS registry at npiregistry.cms.hhs.gov. This page mirrors the same public NPPES data with a monthly snapshot.

Is NPI 1275732364 active?

Yes, as of the latest NPPES snapshot, NPI 1275732364 is active (record last updated 2021-10-22).

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Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2021-10-22.