NPI Portal NPI Lookup & Verification

Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum

Dr. John Paul Winters III, MD

Hematology & Oncology Physician in Westbrook, ME · enumerated 2007.

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

National Provider Identifier

1366648693

Verified

See something wrong? Report a correction

Registry record

Entity type Individual (Type 1)
Name Dr. John Paul Winters III
Credential MD
Sex Male
Practice address 11 Rock Row Ste 120, Westbrook, ME, 04092
Phone (207) 303-3300
Fax (207) 250-2139
Enumeration date Jun 24, 2007
Last updated in NPPES Apr 20, 2026

Taxonomy & licenses

207RH0003X Hematology & Oncology Physician Allopathic & Osteopathic Physicians · License MD20794 (ME) Primary
207RH0003X Hematology & Oncology Physician Allopathic & Osteopathic Physicians · License 20178 (NH) Secondary
MD · Doctor of Medicine: A physician who completed medical school (allopathic medicine), residency training, and state licensure. About the MD credential

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.

Read the full guide → Validate an NPI →

Frequently asked questions

Where does John Winters practice?
The practice location on file with NPPES is in Westbrook, ME. Providers can have multiple locations; NPPES lists the primary practice address.
What is the NPI number for John Winters?
The National Provider Identifier (NPI) for John Winters is 1366648693, a Type 1 (individual) record in the CMS NPPES registry.

Other providers at this practice address

Browse all →

Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2026-04-20.