Individual provider Active NPI

Mark Gregory Baker

  • Day Training/Habilitation Specialist
  • San Mateo, CA
National Provider Identifier
1386448827
Registry record updated Sep 1, 2026
On this page

Key facts

NPPES NPI Registry
Primary specialty
Day Training/Habilitation SpecialistTaxonomy code 373H00000X
Practice address
1700 S Amphlett Blvd Ste 120
San Mateo, CA 94402-2711
Phone
(650) 683-2097
NPI assigned
Apr 3, 2025
Sex
Male
Sole proprietor
Yes

NPPES NPI Registry

Updated by the provider on Sep 1, 2026

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

Specialties & licenses 1

Specialty (taxonomy)CodeLicenseStatePrimary
Day Training/Habilitation Specialist 373H00000X Primary

Addresses

Primary practice location

1700 S Amphlett Blvd Ste 120
San Mateo, CA 94402-2711

Mailing address

1700 S Amphlett Blvd Ste 120
San Mateo, CA 94402-2711
Phone (650) 683-2097

Medicare participation

Medicare enrollment files
Medicare fee-for-service enrollment
Not listed in the public Medicare enrollment file

National Provider Directory

National Provider Directory
Medicare enrollment (NPD)
Not enrolled

Practice roles

OrganizationSpecialtyStatusNew patients
Crestwood Behavioral Health, Inc. CurrentSince Apr 13, 2025 Accepting new patients

Locations

822 Geary St
San Francisco, CA 94109
Phone (628) 216-0303

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": "1743638400000",
    "enumeration_type": "NPI-1",
    "last_updated_epoch": "1788220800000",
    "number": "1386448827",
    "addresses": [
        {
            "country_code": "US",
            "country_name": "United States",
            "address_purpose": "MAILING",
            "address_type": "DOM",
            "address_1": "1700 S AMPHLETT BLVD STE 120",
            "city": "SAN MATEO",
            "state": "CA",
            "postal_code": "944022711",
            "telephone_number": "650-683-2097"
        },
        {
            "country_code": "US",
            "country_name": "United States",
            "address_purpose": "LOCATION",
            "address_type": "DOM",
            "address_1": "1700 S AMPHLETT BLVD STE 120",
            "city": "SAN MATEO",
            "state": "CA",
            "postal_code": "944022711",
            "telephone_number": "650-683-2097"
        }
    ],
    "practiceLocations": [],
    "basic": {
        "last_name": "BAKER",
        "first_name": "MARK",
        "middle_name": "GREGORY",
        "sole_proprietor": "YES",
        "sex": "M",
        "enumeration_date": "2025-04-03",
        "last_updated": "2026-09-01",
        "certification_date": "2026-09-01",
        "status": "A"
    },
    "taxonomies": [
        {
            "code": "373H00000X",
            "taxonomy_group": "",
            "desc": "Day Training/Habilitation Specialist",
            "state": null,
            "license": null,
            "primary": true
        }
    ],
    "identifiers": [],
    "endpoints": [],
    "other_names": []
}

Other providers in San Mateo, CA

Sources for this page

  • NPPES NPI Registry (CMS): identity, addresses, specialties, licenses, identifiers and endpoints. Last updated by the provider on Sep 1, 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.