Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum

Dr. Matthew Paley, DO

Psychiatry Physician in Mill Valley, CA · enumerated 2019.

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

National Provider Identifier

1396303756

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Registry record

Entity type Individual (Type 1)

Name Dr. Matthew Paley

Credential DO

Sex Male

Practice address 655 Redwood Hwy, Ste 332, Mill Valley, CA, 94941

Phone (510) 214-6655

Fax (279) 300-3958

Enumeration date May 31, 2019

Last updated in NPPES Sep 12, 2023

Taxonomy & licenses

390200000X Student in an Organized Health Care Education/Training Program Student, Health Care · License BP10067069 (TX) Secondary

2084P0800X Psychiatry Physician Allopathic & Osteopathic Physicians · License 20A19906 (CA) 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

What is the NPI number for Matthew Paley?

The National Provider Identifier (NPI) for Matthew Paley is 1396303756, a Type 1 (individual) record in the CMS NPPES registry.

Where does Matthew Paley practice?

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

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Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2023-09-12.