Caitlin O'Brien-Masonis, PSY.D

Primary specialty

Clinical PsychologistTaxonomy code 103TC0700X

License

PSY35616 Issued in CA

Practice address

10333 El Camino Real
Atascadero, CA 93422-5808

Phone

(805) 468-2000

NPI assigned

Jan 30, 2025

Sex

Female

Sole proprietor

No

Registry information is reported by the provider to CMS and is not verified. About this source

Specialties & licenses 1

Addresses

Medicare fee-for-service enrollment

Not listed in the public Medicare enrollment file

Eligible to order & refer

• Part B services: No
• Medical equipment: Yes
• Home health: No
• Power mobility devices: No
• Hospice: No

Green means eligible to order or refer.

Medicare enrollment (NPD)

Enrolled

State licenses

Practice roles

Locations

Organizations this provider is connected to: Medicare benefit reassignments (the organization bills Medicare for this provider’s services), Care Compare group memberships and National Provider Directory roles.

• Department of State Hospitals

  • Psychiatric Hospital
  • Coalinga, CA
  • NPI 1124078704
  NPD
• Department of State Hospitals

  • Psychiatric Hospital
  • Atascadero, CA
  • NPI 1174573802
  NPD

The complete NPPES record for this NPI in the NPI Registry API format.

{
    "created_epoch": "1738195200000",
    "enumeration_type": "NPI-1",
    "last_updated_epoch": "1738713600000",
    "number": "1508679846",
    "addresses": [
        {
            "country_code": "US",
            "country_name": "United States",
            "address_purpose": "MAILING",
            "address_type": "DOM",
            "address_1": "PO BOX 2377",
            "city": "ATASCADERO",
            "state": "CA",
            "postal_code": "934232377",
            "telephone_number": "301-742-2910"
        },
        {
            "country_code": "US",
            "country_name": "United States",
            "address_purpose": "LOCATION",
            "address_type": "DOM",
            "address_1": "10333 EL CAMINO REAL",
            "city": "ATASCADERO",
            "state": "CA",
            "postal_code": "934225808",
            "telephone_number": "805-468-2000"
        }
    ],
    "practiceLocations": [],
    "basic": {
        "last_name": "O'BRIEN-MASONIS",
        "first_name": "CAITLIN",
        "credential": "PSY.D",
        "sole_proprietor": "NO",
        "sex": "F",
        "enumeration_date": "2025-01-30",
        "last_updated": "2025-02-05",
        "certification_date": "2025-02-05",
        "status": "A"
    },
    "taxonomies": [
        {
            "code": "103TC0700X",
            "taxonomy_group": "",
            "desc": "Psychologist, Clinical",
            "state": "CA",
            "license": "PSY35616",
            "primary": true
        }
    ],
    "identifiers": [],
    "endpoints": [],
    "other_names": []
}

• Jacquelyn Norris, M.A.
• North County Physical Therapy, Inc
• North County Swallow & Speech Pathology, PC
• Jillian Nowakowski, SLP
• Mason Nutter, LCSW
• Matthew O'Brien, MD
• Abiodun Olufemi Obadina, M.D.,
• Raul Ocampoarroyo
• Reyna Michelle Ochoa
• Stephanie Oldham, M.A., CCC-SLP

• Clinical Psychologist in Atascadero, CA
• Providers in Atascadero, CA by specialty
• Clinical Psychologist in California

• NPPES NPI Registry (CMS): identity, addresses, specialties, licenses, identifiers and endpoints. Last updated by the provider on Feb 5, 2025; self-reported and not verified by CMS. Specialty names from the NUCC taxonomy.
• Medicare enrollment (CMS PECOS): enrollments, PAC IDs and benefit reassignments; Order and Referring.
• National Provider Directory (CMS): practice roles, locations, licenses, networks and endpoints.

Verify at the official NPI Registry.