Individual provider Active NPI

Robert J. Tomaszewski

  • Clinical Psychologist
  • Chatsworth, CA
National Provider Identifier
1407951965
Registry record updated Sep 11, 2025
On this page

Key facts

NPPES NPI Registry
Primary specialty
Clinical PsychologistTaxonomy code 103TC0700X
License
PSY7837 Issued in CA
Practice address
21053 Devonshire St
Suite 101
Chatsworth, CA 91311-2364
Phone
(818) 886-7222
Fax
(818) 886-7223
NPI assigned
Sep 13, 2006
Sex
Male
Sole proprietor
Yes

NPPES NPI Registry

Updated by the provider on Sep 11, 2025

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

Specialties & licenses 2

Specialty (taxonomy)CodeLicenseStatePrimary
Clinical Neuropsychologist 103G00000X PSY7837 CA
Clinical Psychologist 103TC0700X PSY7837 CA Primary

Addresses

Primary practice location

21053 Devonshire St
Suite 101
Chatsworth, CA 91311-2364

Mailing address

21053 Devonshire St
Suite 101
Chatsworth, CA 91311-2364
Phone (818) 886-7222

Medicare participation

Medicare enrollment files
Medicare fee-for-service enrollment
Enrolled in CA
Eligible to order & refer
  • Part B services: Yes
  • Medical equipment: Yes
  • Home health: No
  • Power mobility devices: No
  • Hospice: No
Green means eligible to order or refer.

Enrollment records 1

Enrollment IDStateProvider typePAC IDDetails
I20140130001393 CA Practitioner - Clinical Psychologist 8224176359 Reassigns benefits to 1 organization
Practice locations: Chatsworth, CA

Care Compare profile

Medicare Care Compare
Specialty
Clinical Psychologist
Education
Other, 1981
Medicare assignment
Accepts the Medicare-approved amount as payment in full

Practice addresses (Care Compare)

21053 Devonshire St
Chatsworth, CA 91311-8243
Phone (818) 886-7222

National Provider Directory

National Provider Directory
Medicare enrollment (NPD)
Enrolled
Credentials
Doctor of Philosophy

Practice roles

OrganizationSpecialtyStatusNew patients
UC Regents Clinical CurrentSince Jul 1, 2013 Accepting new patients

Locations

300 Medical Plz
Los Angeles, CA 90095
Phone (310) 206-8438

File 2939
Los Angeles, CA 90074
Phone (310) 794-6596

Organizations & group practices 1

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.

NPI Registry JSON

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

{
    "created_epoch": "1158105600000",
    "enumeration_type": "NPI-1",
    "last_updated_epoch": "1757548800000",
    "number": "1407951965",
    "addresses": [
        {
            "country_code": "US",
            "country_name": "United States",
            "address_purpose": "MAILING",
            "address_type": "DOM",
            "address_1": "21053 DEVONSHIRE ST",
            "address_2": "SUITE 101",
            "city": "CHATSWORTH",
            "state": "CA",
            "postal_code": "913112364",
            "telephone_number": "818-886-7222",
            "fax_number": "818-886-7223"
        },
        {
            "country_code": "US",
            "country_name": "United States",
            "address_purpose": "LOCATION",
            "address_type": "DOM",
            "address_1": "21053 DEVONSHIRE ST",
            "address_2": "SUITE 101",
            "city": "CHATSWORTH",
            "state": "CA",
            "postal_code": "913112364",
            "telephone_number": "818-886-7222",
            "fax_number": "818-886-7223"
        }
    ],
    "practiceLocations": [],
    "basic": {
        "last_name": "TOMASZEWSKI",
        "first_name": "ROBERT",
        "middle_name": "J.",
        "name_prefix": "Dr.",
        "sole_proprietor": "YES",
        "sex": "M",
        "enumeration_date": "2006-09-13",
        "last_updated": "2025-09-11",
        "status": "A"
    },
    "taxonomies": [
        {
            "code": "103G00000X",
            "taxonomy_group": "",
            "desc": "Clinical Neuropsychologist",
            "state": "CA",
            "license": "PSY7837",
            "primary": false
        },
        {
            "code": "103TC0700X",
            "taxonomy_group": "",
            "desc": "Psychologist, Clinical",
            "state": "CA",
            "license": "PSY7837",
            "primary": true
        }
    ],
    "identifiers": [],
    "endpoints": [],
    "other_names": []
}

Other providers in Chatsworth, CA

Sources for this page

Verify at the official NPI Registry.