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

Gretchen Linda Carol Blum

Massage Therapist in Sebastopol, CA · enumerated 2024.

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

National Provider Identifier

1326819889

Verified

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Registry record

Entity type Individual (Type 1)

Name Gretchen Linda Carol Blum

Sex Female

Practice address Sebastopol, CA, 95472

Phone (707) 536-3218

Enumeration date Jan 12, 2024

Last updated in NPPES Jan 12, 2024

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

Taxonomy & licenses

225700000X Massage Therapist Respiratory, Developmental, Rehabilitative and Restorative Service Providers 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

Is NPI 1326819889 active?

Yes, as of the latest NPPES snapshot, NPI 1326819889 is active (record last updated 2024-01-12).

How do I verify Gretchen Linda Blum's NPI record?

Cross-check NPI 1326819889 against the official CMS registry at npiregistry.cms.hhs.gov. This page mirrors the same public NPPES data with a monthly snapshot.

Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2024-01-12.