What is Matthew Hennessy's NPI number?

Matthew Hennessy's National Provider Identifier (NPI) is 1336191576, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.

What is Matthew Hennessy's specialty?

Matthew Hennessy is listed in the NPPES registry with a primary specialty of Group Psychotherapy Psychologist (Behavioral Health & Social Service Providers).

Where is Matthew Hennessy located?

Matthew Hennessy's practice location on file with NPPES is 10333 El Camino Real, Atascadero, CA 93423-7001.

What is Matthew Hennessy's phone number?

The practice phone number listed in the NPPES registry for Matthew Hennessy is (805) 468-2000.

Is Matthew Hennessy's NPI active?

Yes — Matthew Hennessy's NPI (1336191576) is active in the NPPES registry as of the last update on 2025-09-11.

IndividualActive

Matthew Hennessy, PSYD

NPI 1336191576 · Group Psychotherapy Psychologist · Atascadero, CA

Matthew Hennessy, PSYD is a Group Psychotherapy Psychologist provider in Atascadero, CA (NPI 1336191576).

Provider details

NPI number: 1336191576
Entity type: Individual
Primary specialty: Group Psychotherapy PsychologistBehavioral Health & Social Service Providers
Credential: PSYD
Sex: Male
License: PSY17421 (CA)

Specialties & taxonomies

Group Psychotherapy PsychologistPrimary103TP2701XLicense PSY17421 (CA)
Behavioral Health & Social Service Providers
Cognitive & Behavioral Psychologist103TB0200XLicense PSY17421 (CA)
Behavioral Health & Social Service Providers
Clinical Psychologist103TC0700XLicense PSY17421 (CA)
Behavioral Health & Social Service Providers
Counseling Psychologist103TC1900XLicense PSY17421 (CA)
Behavioral Health & Social Service Providers
Forensic Psychologist103TF0200XLicense PSY17421 (CA)
Behavioral Health & Social Service Providers
Psychologist103T00000XLicense PSY17421 (CA)

Profile Score

Detailed profile(91/100 index)

A profile completeness & documented-activity index — NOT a quality, outcomes, or patient-satisfaction rating.

Registry tenure38% of score
20 yrs in NPPES registry
Profile completeness38% of score
100% of core fields populated
Practice footprint23% of score
1 documented practice location

Signals a provider has no public data for (e.g. Medicare claims) are left out of the score entirely — never counted as zero — so providers without that data are not penalized. See the full formula and weights in our methodology.

Practice location

10333 El Camino Real

Atascadero, CA 93423-7001

Phone: (805) 468-2000

Fax: (805) 466-6011

Street-level locationGet directions

More CA providers

Mailing address

1600 9th St

Sacramento, CA 95814-6414

Enumerated: 2006-05-16
Last updated: 2025-09-11

Frequently asked questions

What is Matthew Hennessy's NPI number?: Matthew Hennessy's National Provider Identifier (NPI) is 1336191576, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
What is Matthew Hennessy's specialty?: Matthew Hennessy is listed in the NPPES registry with a primary specialty of Group Psychotherapy Psychologist (Behavioral Health & Social Service Providers).
Where is Matthew Hennessy located?: Matthew Hennessy's practice location on file with NPPES is 10333 El Camino Real, Atascadero, CA 93423-7001.
What is Matthew Hennessy's phone number?: The practice phone number listed in the NPPES registry for Matthew Hennessy is (805) 468-2000.
Is Matthew Hennessy's NPI active?: Yes — Matthew Hennessy's NPI (1336191576) is active in the NPPES registry as of the last update on 2025-09-11.

Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.