Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum

Katherine Gagan, MD

Family Medicine Physician in Plymouth, NH · enumerated 2019.

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

National Provider Identifier

1770148850

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Registry record

Entity type Individual (Type 1)

Name Katherine Gagan

Credential MD

Sex Female

Practice address 101 Boulder Point Dr Ste 1, Plymouth, NH, 03264

Phone (603) 536-4000

Fax (603) 536-4001

Enumeration date May 5, 2019

Last updated in NPPES Aug 4, 2023

Taxonomy & licenses

207Q00000X Family Medicine Physician Allopathic & Osteopathic Physicians · License 22604 (NH) Primary

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

How do I verify Katherine Gagan's NPI record?

Cross-check NPI 1770148850 against the official CMS registry at npiregistry.cms.hhs.gov. This page mirrors the same public NPPES data with a monthly snapshot.

Is NPI 1770148850 active?

Yes, as of the latest NPPES snapshot, NPI 1770148850 is active (record last updated 2023-08-04).

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Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2023-08-04.