Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum

Caitlin Grahn, PA-C

Physician Assistant in Hingham, MA · enumerated 2024.

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

National Provider Identifier

1912749201

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Registry record

Entity type Individual (Type 1)

Name Caitlin Grahn

Credential PA-C

Sex Female

Practice address 2 Pond Park Rd Ste 102, Hingham, MA, 02043

Phone (781) 337-5555

Enumeration date Jun 10, 2024

Last updated in NPPES Apr 10, 2026

Taxonomy & licenses

363A00000X Physician Assistant Physician Assistants & Advanced Practice Nursing Providers · License PA101358 (MA) Primary

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 Caitlin Grahn practice?

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

What is the NPI number for Caitlin Grahn?

The National Provider Identifier (NPI) for Caitlin Grahn is 1912749201, a Type 1 (individual) record in the CMS NPPES registry.

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Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2026-04-10.