Merritt Walker

Primary specialty

Physical TherapistTaxonomy code 225100000X

License

309030 Issued in CA

Practice address

220 Greenfield Ave
San Anselmo, CA 94960-2416

Phone

(415) 457-4454

NPI assigned

Dec 9, 2025

Sex

Male

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

Enrolled in CA

Enrollment records 1

Specialty

Physical Therapist in Private Practice

Education

Other, 2018

Medicare assignment

Accepts the Medicare-approved amount as payment in full

Group practices

Sport and Spine Therapy of Marin IncGroup PAC ID 4981617180, 11 clinicians

Practice addresses (Care Compare)

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.

• Sport & Spine Therapy of Marin Inc

  • Orthopedic Physical Therapist
  • Novato, CA
  • NPI 1174578199
  Medicare reassignment Care Compare group NPD (past)
• Sport & Spine Therapy of Marin Inc

  • Orthopedic Physical Therapist
  • San Anselmo, CA
  • NPI 1154388577
  NPD

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

{
    "created_epoch": "1765238400000",
    "enumeration_type": "NPI-1",
    "last_updated_epoch": "1765238400000",
    "number": "1063375780",
    "addresses": [
        {
            "country_code": "US",
            "country_name": "United States",
            "address_purpose": "MAILING",
            "address_type": "DOM",
            "address_1": "220 GREENFIELD AVE",
            "city": "SAN ANSELMO",
            "state": "CA",
            "postal_code": "949602416",
            "telephone_number": "415-457-4454"
        },
        {
            "country_code": "US",
            "country_name": "United States",
            "address_purpose": "LOCATION",
            "address_type": "DOM",
            "address_1": "220 GREENFIELD AVE",
            "city": "SAN ANSELMO",
            "state": "CA",
            "postal_code": "949602416",
            "telephone_number": "415-457-4454"
        }
    ],
    "practiceLocations": [],
    "basic": {
        "last_name": "WALKER",
        "first_name": "MERRITT",
        "sole_proprietor": "NO",
        "sex": "M",
        "enumeration_date": "2025-12-09",
        "last_updated": "2025-12-09",
        "certification_date": "2025-12-09",
        "status": "A"
    },
    "taxonomies": [
        {
            "code": "225100000X",
            "taxonomy_group": "",
            "desc": "Physical Therapist",
            "state": "CA",
            "license": "309030",
            "primary": true
        }
    ],
    "identifiers": [],
    "endpoints": [],
    "other_names": []
}

• Amy Caryn Vance, MS, CGC
• David P Vanpeursem, D.D.S.
• Rachel Renee Vick, MS CCC SLP
• Katelynn Vifquain, L.AC.
• Walgreen Co (Walgreens #07445)
• Laura Katherine Waller, M.D.
• Ieshia Rhonda Washington
• Laurie J. Weiss, LMFT
• Thoams Lee Welch
• Alexis White

• Physical Therapist in San Anselmo, CA
• Providers in San Anselmo, CA by specialty
• Physical Therapist in California

• NPPES NPI Registry (CMS): identity, addresses, specialties, licenses, identifiers and endpoints. Last updated by the provider on Dec 9, 2025; self-reported and not verified by CMS. Specialty names from the NUCC taxonomy.
• Medicare enrollment (CMS PECOS): enrollments, PAC IDs and benefit reassignments.
• Medicare Care Compare (CMS): clinician profile, group practices, facility affiliations, MIPS scores and star ratings.
• National Provider Directory (CMS): practice roles, locations, licenses, networks and endpoints.

Verify at the official NPI Registry.