NPIMap

Organization Active NPI

Bay Children'S Services

  • Child & Adolescent Psychiatry Physician
  • Berkeley, CA
National Provider Identifier
1003095563
Registry record updated Jan 29, 2026
On this page

Key facts

NPPES NPI Registry
Primary specialty
Child & Adolescent Psychiatry PhysicianTaxonomy code 2084P0804X
Legal business name
BAY CHILDREN'S SERVICES
Practice address
3030 Ashby Ave
Suite 104
Berkeley, CA 94705-2439
Phone
(510) 224-4221
Fax
(510) 422-1442
NPI assigned
Oct 31, 2007
Organization subpart
No

NPPES NPI Registry

Updated by the provider on Jan 29, 2026

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

Authorized official

Name
Dr. Thomas Paul Tarshis, MDNPI 1043304017
Title
Founder and Cfo
Phone
(510) 224-4221

Authorized official NPPES reports the official by name only. The link goes to the one practitioner connected to this organization with that name.

Specialties & licenses 5

Specialty (taxonomy)CodeLicenseStatePrimary
PsychologistGroup: 193200000X MULTI-SPECIALTY GROUP 103T00000X
Clinical Child & Adolescent PsychologistGroup: 193200000X MULTI-SPECIALTY GROUP 103TC2200X
Marriage & Family TherapistGroup: 193200000X MULTI-SPECIALTY GROUP 106H00000X
Psychiatry PhysicianGroup: 193200000X MULTI-SPECIALTY GROUP 2084P0800X
Child & Adolescent Psychiatry PhysicianGroup: 193200000X MULTI-SPECIALTY GROUP 2084P0804X Primary

Addresses

Primary practice location

3030 Ashby Ave
Suite 104
Berkeley, CA 94705-2439

Mailing address

3030 Ashby Ave Ste 104
Berkeley, CA 94705-2439
Phone (510) 224-4221

Other practice location 1

1408 Chapin Ave Ste 3
Burlingame, CA 94010-4080
Phone (510) 224-4221

Other names 1

  • Bay Area Children's Associatiobn Former legal business name

National Provider Directory

National Provider Directory
Tax ID family
Bay Area Children'S Association Menlo4 organizations share this tax ID, including this one

Other organizations with this tax ID 3

Organizations that report the same tax identification number in the National Provider Directory.

Locations

3030 Ashby Ave
Ste 104
Berkeley, CA 94705
Phone (510) 224-4221

1408 Chapin Ave
Ste 3
Burlingame, CA 94010
Phone (510) 493-7739

Practitioners & affiliated clinicians

Practitioners 4

Individual providers connected to this organization through Medicare benefit reassignment, Care Compare group membership or National Provider Directory roles.

NPI Registry JSON

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

{
    "created_epoch": "1193788800000",
    "enumeration_type": "NPI-2",
    "last_updated_epoch": "1769644800000",
    "number": "1003095563",
    "addresses": [
        {
            "country_code": "US",
            "country_name": "United States",
            "address_purpose": "MAILING",
            "address_type": "DOM",
            "address_1": "3030 ASHBY AVE STE 104",
            "city": "BERKELEY",
            "state": "CA",
            "postal_code": "947052439",
            "telephone_number": "510-224-4221",
            "fax_number": "510-422-1442"
        },
        {
            "country_code": "US",
            "country_name": "United States",
            "address_purpose": "LOCATION",
            "address_type": "DOM",
            "address_1": "3030 ASHBY AVE",
            "address_2": "SUITE 104",
            "city": "BERKELEY",
            "state": "CA",
            "postal_code": "947052439",
            "telephone_number": "510-224-4221",
            "fax_number": "510-422-1442"
        }
    ],
    "practiceLocations": [
        {
            "address_1": "1408 Chapin Ave Ste 3",
            "address_purpose": "LOCATION",
            "city": "Burlingame",
            "state": "CA",
            "postal_code": "940104080",
            "country_code": "US",
            "telephone_number": "510-224-4221",
            "fax_number": "510-422-1442",
            "country_name": "United States",
            "address_type": "DOM"
        }
    ],
    "basic": {
        "organization_name": "BAY CHILDREN'S SERVICES",
        "organizational_subpart": "NO",
        "enumeration_date": "2007-10-31",
        "last_updated": "2026-01-29",
        "certification_date": "2026-01-29",
        "status": "A",
        "authorized_official_last_name": "TARSHIS",
        "authorized_official_first_name": "THOMAS",
        "authorized_official_middle_name": "PAUL",
        "authorized_official_title_or_position": "FOUNDER AND CFO",
        "authorized_official_telephone_number": "510-224-4221",
        "authorized_official_name_prefix": "Dr.",
        "authorized_official_credential": "MD"
    },
    "taxonomies": [
        {
            "code": "103T00000X",
            "taxonomy_group": "193200000X MULTI-SPECIALTY GROUP",
            "desc": "Psychologist",
            "state": null,
            "license": null,
            "primary": false
        },
        {
            "code": "103TC2200X",
            "taxonomy_group": "193200000X MULTI-SPECIALTY GROUP",
            "desc": "Psychologist, Clinical Child & Adolescent",
            "state": null,
            "license": null,
            "primary": false
        },
        {
            "code": "106H00000X",
            "taxonomy_group": "193200000X MULTI-SPECIALTY GROUP",
            "desc": "Marriage & Family Therapist",
            "state": null,
            "license": null,
            "primary": false
        },
        {
            "code": "2084P0800X",
            "taxonomy_group": "193200000X MULTI-SPECIALTY GROUP",
            "desc": "Psychiatry & Neurology, Psychiatry",
            "state": null,
            "license": null,
            "primary": false
        },
        {
            "code": "2084P0804X",
            "taxonomy_group": "193200000X MULTI-SPECIALTY GROUP",
            "desc": "Psychiatry & Neurology, Child & Adolescent Psychiatry",
            "state": null,
            "license": null,
            "primary": true
        }
    ],
    "identifiers": [],
    "endpoints": [],
    "other_names": [
        {
            "organization_name": "Bay Area Children's Associatiobn",
            "code": "4",
            "type": "Former Legal Business Name"
        }
    ]
}

Other providers in Berkeley, CA

Sources for this page

  • NPPES NPI Registry (CMS): identity, addresses, specialties, licenses, identifiers and endpoints. Last updated by the provider on Jan 29, 2026; self-reported and not verified by CMS. Specialty names from the NUCC taxonomy.
  • National Provider Directory (CMS): practice roles, locations, licenses, networks and endpoints.

Verify at the official NPI Registry.