Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum

Dr. Nathan Kyle Simmons, PSY.D.

Psychologist in San Marcos, CA · enumerated 2006.

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

National Provider Identifier

1447313846

Verified

See something wrong? Report a correction

Registry record

Entity type Individual (Type 1)

Name Dr. Nathan Kyle Simmons

Credential PSY.D.

Sex Male

Practice address 277 Rancheros Dr, Suite 301, San Marcos, CA, 92069

Phone (619) 528-4600

Fax (619) 528-4625

Enumeration date Dec 18, 2006

Last updated in NPPES Apr 17, 2019

Taxonomy & licenses

103TC0700X Clinical Psychologist Behavioral Health & Social Service Providers · License PSY25856 (CA) Secondary

103T00000X Psychologist Behavioral Health & Social Service Providers Primary

PSYD · Doctor of Psychology: A clinical doctorate in psychology focused on professional practice. About the PSYD credential

Other identifiers

Identifier	Type	State	Issuer
W416	Other	CA	PCSD MEDICARE #

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 Nathan Simmons?

The National Provider Identifier (NPI) for Nathan Simmons is 1447313846, a Type 1 (individual) record in the CMS NPPES registry.

Where does Nathan Simmons practice?

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

Other providers at this practice address

Browse all →

Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2019-04-17.