NPI Portal NPI Lookup & Verification

John L Margolis, MD

John L Margolis is a Surgery Physician provider (Surgery) practicing in Waterville, ME, registered in the NPPES registry with NPI 1821062084 since 2006. The credential MD stands for Doctor of Medicine.

✓ Active NPI ✓ Valid NPI checksum

NPI 1821062084
Entity type Individual (Type 1)
Name John L Margolis
Credential MD
Sex Male
Practice address 325 D KENNEDY MEMORIAL DR, Waterville, ME, 04901
Phone 2078734055
Fax 2078735243
Enumeration date 2006-02-15
Last updated in NPPES 2007-07-08

Taxonomy & licenses

Taxonomy code Specialty Primary License State
208600000X Surgery Physician Primary 11537 ME

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

Copy-ready billing details
Provider: John Margolis, MD
NPI: 1821062084
Taxonomy: 208600000X (Surgery Physician)
Address: 325 D KENNEDY MEMORIAL DR, Waterville, ME, 04901

Verify this record

Cross-check NPI 1821062084 against the authoritative CMS record: view John L Margolis on the official NPPES registry .

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 or validate an NPI number.

Frequently asked questions

What is the NPI number for John Margolis?
The National Provider Identifier (NPI) for John Margolis is 1821062084, a Type 1 (individual) record in the CMS NPPES registry.
Where does John Margolis practice?
The practice location on file with NPPES is in Waterville, ME. Providers can have multiple locations; NPPES lists the primary practice address.

Source: CMS NPPES (public data). Snapshot 2026-07-11. Provider record last updated 2007-07-08.