Lean Psychological California, PC

Primary specialty

Mental Health CounselorTaxonomy code 101YM0800X

Legal business name

LEAN PSYCHOLOGICAL CALIFORNIA, PC

Practice address

301 Mission St Apt 21F
San Francisco, CA 94105-6650

Phone

(650) 465-1006

NPI assigned

Mar 9, 2026

Organization subpart

No

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

Authorized official

Name

Dr. Britney Blair, PSYDNPI 1508173352

Title

Founder

Phone

(650) 465-1006

Specialties & licenses 5

Addresses

Practitioners 1

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

• Britney Blair, PSY.D., CBSM

  • Clinical Psychologist
  • San Francisco, CA
  • NPI 1508173352
  NPD Authorized official

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

{
    "created_epoch": "1773014400000",
    "enumeration_type": "NPI-2",
    "last_updated_epoch": "1773014400000",
    "number": "1124974472",
    "addresses": [
        {
            "country_code": "US",
            "country_name": "United States",
            "address_purpose": "MAILING",
            "address_type": "DOM",
            "address_1": "301 MISSION ST APT 21F",
            "city": "SAN FRANCISCO",
            "state": "CA",
            "postal_code": "941056650"
        },
        {
            "country_code": "US",
            "country_name": "United States",
            "address_purpose": "LOCATION",
            "address_type": "DOM",
            "address_1": "301 MISSION ST APT 21F",
            "city": "SAN FRANCISCO",
            "state": "CA",
            "postal_code": "941056650",
            "telephone_number": "650-465-1006"
        }
    ],
    "practiceLocations": [],
    "basic": {
        "organization_name": "LEAN PSYCHOLOGICAL CALIFORNIA, PC",
        "organizational_subpart": "NO",
        "enumeration_date": "2026-03-09",
        "last_updated": "2026-03-09",
        "certification_date": "2026-03-09",
        "status": "A",
        "authorized_official_last_name": "BLAIR",
        "authorized_official_first_name": "BRITNEY",
        "authorized_official_title_or_position": "FOUNDER",
        "authorized_official_telephone_number": "650-465-1006",
        "authorized_official_name_prefix": "Dr.",
        "authorized_official_credential": "PSYD"
    },
    "taxonomies": [
        {
            "code": "101YM0800X",
            "taxonomy_group": "193200000X MULTI-SPECIALTY GROUP",
            "desc": "Counselor, Mental Health",
            "state": null,
            "license": null,
            "primary": true
        },
        {
            "code": "103G00000X",
            "taxonomy_group": "193200000X MULTI-SPECIALTY GROUP",
            "desc": "Clinical Neuropsychologist",
            "state": null,
            "license": null,
            "primary": false
        },
        {
            "code": "103T00000X",
            "taxonomy_group": "193200000X MULTI-SPECIALTY GROUP",
            "desc": "Psychologist",
            "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": "363LP0808X",
            "taxonomy_group": "193200000X MULTI-SPECIALTY GROUP",
            "desc": "Nurse Practitioner, Psychiatric/Mental Health",
            "state": null,
            "license": null,
            "primary": false
        }
    ],
    "identifiers": [],
    "endpoints": [],
    "other_names": []
}

• Stephen Leader
• Ariella Libi Leaffer
• Barbara Leaffer, MSW
• Margo M. Leahy, M.D.
• Guilherme N Leal, RPH
• Leanne Carter
• Michelle Angela Leao, LMFT
• Lorriana E Leard, MD
• Denise Leary
• Jeanne Marie Leary, M.D.

• Mental Health Counselor in San Francisco, CA
• Providers in San Francisco, CA by specialty
• Mental Health Counselor in California

• NPPES NPI Registry (CMS): identity, addresses, specialties, licenses, identifiers and endpoints. Last updated by the provider on Mar 9, 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.