Psychologist | Cognitive & Behavioral Psychology

Matthew Thomas Hennessy, PSYD

10333 El Camino Real, Atascadero, California, 93423-7001

About Matthew Thomas Hennessy

Matthew Thomas Hennessy is a psychologist based in Atascadero, California who is specialized in Cognitive & Behavioral Psychology. Active license number of Matthew Thomas Hennessy is PSY17421 for Group Psychotherapy in California. His current practice location is 10333 El Camino Real, Atascadero. Patients can contact him at 805-468-2000 or can fax him at 805-466-6011. Matthew Thomas Hennessy, PSYD, specializes in Cognitive & Behavioral Psychology and his NPI number (Unique professional ID assigned by NPPES) is 1336191576.

Matthew Thomas Hennessy has variety of professional responsibilities, including assessment (identifying, diagnosing, and conceptualizing problems experienced by individuals or groups), intervention (creating, implementing and evaluating interventions designed to induce positive change) and consultation. Cognitive Behavioral Psychologists also participates in research, education, training, and clinical practice including a range of issues and populations.

Practice Information

Matthew Thomas Hennessy's specialty, credentials, practice address, contact phone number and fax are as below. Patients can call on the below given phone number for appointment.

Provider Name Matthew Thomas Hennessy
Specialization Cognitive & Behavioral Psychology
Credentials PSYD
Gender Male
Practice Address: 10333 El Camino Real,
Atascadero, CA - 93423-7001
Fax 805-466-6011

Professional Identification Codes

NPI number stands for National Provider Identifier which is a unique 10-digit identification number issued to healthcare providers in the United States by the Centers for Medicare and Medicaid Services (CMS). NPI details are as mentioned below.

NPI Number1336191576
NPI Enumeration Date: 16 May, 2006
NPI Last Update On: 13 Jul, 2026

Medical Licenses:

Healthcare professionals can hold one or more medical licenses for different specialties in the same state or different states. Related medical licenses for Matthew Thomas Hennessy are as mentioned below.

License NumberSpecializationStateStatus
PSY17421Group Psychotherapy CaliforniaPrimary
PSY17421Cognitive & Behavioral Psychology CaliforniaSecondary
PSY17421Clinical Psychology CaliforniaSecondary
PSY17421Counseling Psychology CaliforniaSecondary
PSY17421Forensic Psychology CaliforniaSecondary
PSY17421General Psychology CaliforniaSecondary

Mailing Address

Business mailing address can be used for mailing purpose only, for visiting purpose patients need to refer above mentioned Practice address.

Matthew Thomas Hennessy
1600 9th St, Room 205 Mailstop 2-3
Sacramento, CA - 95814-6414
Phone: 916-654-2431
Fax: 916-654-3186

Book an Appointment with Matthew Thomas Hennessy

To schedule an appointment, contact Matthew Thomas Hennessy at 10333 El Camino Real, Atascadero, California or call the phone number listed below.

Book an Appointment

Frequently Asked Questions

Below are some commonly asked questions about Matthew Thomas Hennessy:

Matthew Thomas Hennessy is a psychologist specializing in Group Psychotherapy. He is specialized to perform group therapy, a form of psychotherapy in which one or more therapists treat a small group of clients together as a group. It can be any form of psychotherapy which is delivered in a group format, including cognitive behavioural therapy or interpersonal therapy, but it is usually psychodynamic group therapy where the group context and group process is explicitly utilised as a mechanism of change by developing, exploring and examining interpersonal relationships within the group.

Yes, Matthew Thomas Hennessy is currently accepting new patients. To schedule an appointment, contact the office directly and schedule an appointment.
*Availability may change. Please contact the office directly to ask about appointments.

Matthew Thomas Hennessy practices at 10333 El Camino Real, Atascadero, California, 93423-7001.

To schedule an appointment with Matthew Thomas Hennessy, please contact the office at 805-468-2000.

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**Data of this site is collected from Medicare & Medicaid Services (CMS) and NPPES. Last updated on 14 September, 2026.