Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum Sole proprietor

Gerrit Seymour, DO

Family Medicine Physician in Billings, MT · enumerated 2022.

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

National Provider Identifier

1952049645

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Registry record

Entity type Individual (Type 1)

Name Gerrit Seymour

Credential DO

Sex Male

Practice address Billings, MT, 59101

Phone (406) 243-3350

Fax (406) 247-3389

Enumeration date May 24, 2022

Last updated in NPPES Jul 8, 2025

Street address withheld: NPPES sole-proprietor addresses can be home addresses. See our data policy.

Taxonomy & licenses

207Q00000X Family Medicine Physician Allopathic & Osteopathic Physicians · License 160349 (MT) Primary

DO · Doctor of Osteopathic Medicine: A fully licensed physician trained in osteopathic medical schools, with the same practice rights as an MD. About the DO 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 Gerrit Seymour practice?

The practice location on file with NPPES is in Billings, MT. Providers can have multiple locations; NPPES lists the primary practice address.

What is the NPI number for Gerrit Seymour?

The National Provider Identifier (NPI) for Gerrit Seymour is 1952049645, a Type 1 (individual) record in the CMS NPPES registry.

Other providers at this practice address

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Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2025-07-08.