Individual provider Active NPI

Katherine Williams, M.D.

  • Internal Medicine Physician
  • Saint Helena, CA
National Provider Identifier
1710371463
Registry record updated Mar 20, 2015
On this page

Key facts

NPPES NPI Registry
Primary specialty
Internal Medicine PhysicianTaxonomy code 207R00000X
License
G57420 Issued in CA
Practice address
2800 St. Helena Highway North
Saint Helena, CA 94574
Phone
(707) 758-5936
NPI assigned
Mar 20, 2015
Last updated
Mar 20, 2015By the provider in NPPES
Sex
Female
Sole proprietor
Yes

NPPES NPI Registry

Updated by the provider on Mar 20, 2015

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

Specialties & licenses 1

Specialty (taxonomy)CodeLicenseStatePrimary
Internal Medicine Physician 207R00000X G57420 CA Primary

Addresses

Primary practice location

2800 St. Helena Highway North
Saint Helena, CA 94574

Mailing address

PO Box 82
Saint Helena, CA 94574-0082
Phone (707) 758-5936

Medicare participation

Medicare enrollment files
Medicare fee-for-service enrollment
Enrolled in CA
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.

Enrollment records 1

Enrollment IDStateProvider typePAC IDDetails
I20260309003307 CA Practitioner - Internal Medicine 4880177864 Reassigns benefits to 1 organization

Care Compare profile

Medicare Care Compare
Specialty
Internal Medicine
Education
University of California, San Francisco School of Medicine, 1984
Medicare assignment
May accept Medicare assignment

Practice addresses (Care Compare)

4055 Valley View LN
Suite 700
Dallas, TX 75244-5045

4055 Valley View LN
Suite 700
Dallas, TX 95244-5045

National Provider Directory

National Provider Directory
Medicare enrollment (NPD)
Enrolled
Credentials
Doctor of Medicine

State licenses

LicenseStateTypeSpecialty
G57420CAMDInternal Medicine Physician

Practice roles

OrganizationSpecialtyStatusNew patients
Signify Health Medical Associates of California, PC CurrentSince Jan 25, 2026 Accepting new patients

Locations

818 W 7th St
Ste 930
Los Angeles, CA 90017
Phone (800) 525-9202

Interoperability endpoints

  • Direct secure messaging: kwilliams663999@direct.ochin.org

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, National Provider Directory roles and organizations whose NPPES authorized official is this provider.

NPI Registry JSON

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

{
    "created_epoch": "1426809600000",
    "enumeration_type": "NPI-1",
    "last_updated_epoch": "1426809600000",
    "number": "1710371463",
    "addresses": [
        {
            "country_code": "US",
            "country_name": "United States",
            "address_purpose": "MAILING",
            "address_type": "DOM",
            "address_1": "PO BOX 82",
            "city": "SAINT HELENA",
            "state": "CA",
            "postal_code": "945740082",
            "telephone_number": "707-758-5936"
        },
        {
            "country_code": "US",
            "country_name": "United States",
            "address_purpose": "LOCATION",
            "address_type": "DOM",
            "address_1": "2800 ST. HELENA HIGHWAY NORTH",
            "city": "SAINT HELENA",
            "state": "CA",
            "postal_code": "94574",
            "telephone_number": "707-758-5936"
        }
    ],
    "practiceLocations": [],
    "basic": {
        "last_name": "WILLIAMS",
        "first_name": "KATHERINE",
        "name_prefix": "Dr.",
        "credential": "M.D.",
        "sole_proprietor": "YES",
        "sex": "F",
        "enumeration_date": "2015-03-20",
        "last_updated": "2015-03-20",
        "status": "A"
    },
    "taxonomies": [
        {
            "code": "207R00000X",
            "taxonomy_group": "",
            "desc": "Internal Medicine",
            "state": "CA",
            "license": "G57420",
            "primary": true
        }
    ],
    "identifiers": [],
    "endpoints": [],
    "other_names": []
}

Other providers in Saint Helena, CA

Sources for this page

Verify at the official NPI Registry.