Kristin A Wingfield Williams, M.D.

Primary specialty

Sports Medicine (Family Medicine) PhysicianTaxonomy code 207QS0010X

License

A83480 Issued in CA

Practice address

20 Sunnyside Ave Ste B
Mill Valley, CA 94941-1928

Phone

(415) 322-0230

Fax

(415) 727-9841

NPI assigned

Jul 15, 2006

Sex

Female

Sole proprietor

Yes

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

Not listed in the public Medicare enrollment file

Eligible to order & refer

• Part B services: Yes
• Medical equipment: Yes
• Home health: Yes
• Power mobility devices: Yes
• Hospice: Yes

Green means eligible to order or refer.

Opted out of Medicare

Yes, effective Jul 1, 2025 through Jul 1, 2027

Medicare enrollment (NPD)

Enrolled

Credentials

Doctor of Medicine

State licenses

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

{
    "created_epoch": "1152921600000",
    "enumeration_type": "NPI-1",
    "last_updated_epoch": "1736035200000",
    "number": "1790701225",
    "addresses": [
        {
            "country_code": "US",
            "country_name": "United States",
            "address_purpose": "MAILING",
            "address_type": "DOM",
            "address_1": "304 TODD WAY",
            "city": "MILL VALLEY",
            "state": "CA",
            "postal_code": "949413442",
            "telephone_number": "650-804-2252",
            "fax_number": "415-727-9841"
        },
        {
            "country_code": "US",
            "country_name": "United States",
            "address_purpose": "LOCATION",
            "address_type": "DOM",
            "address_1": "20 SUNNYSIDE AVE STE B",
            "city": "MILL VALLEY",
            "state": "CA",
            "postal_code": "949411928",
            "telephone_number": "415-322-0230",
            "fax_number": "415-727-9841"
        }
    ],
    "practiceLocations": [],
    "basic": {
        "last_name": "WINGFIELD WILLIAMS",
        "first_name": "KRISTIN",
        "middle_name": "A",
        "name_prefix": "Dr.",
        "credential": "M.D.",
        "sole_proprietor": "YES",
        "sex": "F",
        "enumeration_date": "2006-07-15",
        "last_updated": "2025-01-05",
        "certification_date": "2025-01-05",
        "status": "A"
    },
    "taxonomies": [
        {
            "code": "207QS0010X",
            "taxonomy_group": "",
            "desc": "Family Medicine, Sports Medicine",
            "state": "CA",
            "license": "A83480",
            "primary": true
        }
    ],
    "identifiers": [],
    "endpoints": [],
    "other_names": []
}

• Jade R Wienbar, ND
• Matthew Craig Williams, MD
• Sofia Williams
• Heidi Wiltsee
• Tammy Ann Winchell, A.R.N.P
• Jessica Marian Wirth, PA-C
• Linda Woodard, MD
• Chelsey Worth, CD-L, PIC
• Anne C Wrigley
• Caiyun Xu

• Sports Medicine (Family Medicine) Physician in Mill Valley, CA
• Providers in Mill Valley, CA by specialty
• Sports Medicine (Family Medicine) Physician in California

• NPPES NPI Registry (CMS): identity, addresses, specialties, licenses, identifiers and endpoints. Last updated by the provider on Jan 5, 2025; self-reported and not verified by CMS. Specialty names from the NUCC taxonomy.
• Medicare enrollment (CMS PECOS): enrollments, PAC IDs and benefit reassignments; Order and Referring; Opt Out Affidavits.
• National Provider Directory (CMS): practice roles, locations, licenses, networks and endpoints.

Verify at the official NPI Registry.