Karl Knox Williams Jr., MD

Primary specialty

Pediatrics PhysicianTaxonomy code 208000000X

License

37566 Issued in MN

Practice address

6600 France Ave S Ste 300
Edina, MN 55435-1803

Phone

(952) 278-7000

Fax

(952) 831-2388

NPI assigned

Aug 16, 2006

Last updated

Sep 24, 2026By the provider in NPPES

Sex

Male

Sole proprietor

Yes

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

Specialties & licenses 1

Addresses

Other identifiers 4

Medicare fee-for-service enrollment

Not listed in the public Medicare enrollment file

Medicare enrollment (NPD)

Not enrolled

Credentials

Doctor of Medicine

State licenses

Practice roles

Interoperability endpoints

• FHIR API: https://fhir-myrecord.cerner.com/r4/1846cf9e-8006-4277-b72f-3cbbe8a8f5ca/

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.

• Southdale Pediatric Associates, LTD

  • Multi-Specialty Clinic/Center
  • Edina, MN
  • NPI 1245305895
  NPD (past)

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

{
    "created_epoch": "1155686400000",
    "enumeration_type": "NPI-1",
    "last_updated_epoch": "1790208000000",
    "number": "1073626982",
    "addresses": [
        {
            "country_code": "US",
            "country_name": "United States",
            "address_purpose": "MAILING",
            "address_type": "DOM",
            "address_1": "6600 FRANCE AVE S STE 315",
            "city": "EDINA",
            "state": "MN",
            "postal_code": "554351803",
            "telephone_number": "952-831-1944",
            "fax_number": "952-278-6947"
        },
        {
            "country_code": "US",
            "country_name": "United States",
            "address_purpose": "LOCATION",
            "address_type": "DOM",
            "address_1": "6600 FRANCE AVE S STE 300",
            "city": "EDINA",
            "state": "MN",
            "postal_code": "554351803",
            "telephone_number": "952-278-7000",
            "fax_number": "952-831-2388"
        }
    ],
    "practiceLocations": [],
    "basic": {
        "last_name": "WILLIAMS",
        "first_name": "KARL",
        "middle_name": "KNOX",
        "name_prefix": "Dr.",
        "name_suffix": "Jr.",
        "credential": "MD",
        "sole_proprietor": "YES",
        "sex": "M",
        "enumeration_date": "2006-08-16",
        "last_updated": "2026-09-24",
        "certification_date": "2026-09-24",
        "status": "A"
    },
    "taxonomies": [
        {
            "code": "208000000X",
            "taxonomy_group": "",
            "desc": "Pediatrics",
            "state": "MN",
            "license": "37566",
            "primary": true
        }
    ],
    "identifiers": [
        {
            "code": "01",
            "desc": "Other (non-Medicare)",
            "issuer": "BC/BS",
            "identifier": "5T012WI",
            "state": "MN"
        },
        {
            "code": "01",
            "desc": "Other (non-Medicare)",
            "issuer": "PREFERRED ONE",
            "identifier": "FP9021004409",
            "state": "MN"
        },
        {
            "code": "05",
            "desc": "MEDICAID",
            "issuer": null,
            "identifier": "098523600",
            "state": "MN"
        },
        {
            "code": "01",
            "desc": "Other (non-Medicare)",
            "issuer": "MEDICA",
            "identifier": "1202151",
            "state": "MN"
        }
    ],
    "endpoints": [],
    "other_names": []
}

• Elizabeth Eppel Williams, PSYCHOTHERAPIST MA
• Elizabeth Ruth Williams, L.AC.
• Emily Marie Williams, M.D.
• Jeremy L Williams, ATC
• Joseph P Williams III, MD
• Melissa Ny Williams, MD
• Sarah Williams
• Sheri Lynn Williams, MD
• Thomas Eugene Williams, MSW LICSW
• Timyia Antionette Williams

• Pediatrics Physician in Edina, MN
• Providers in Edina, MN by specialty
• Pediatrics Physician in Minnesota

• NPPES NPI Registry (CMS): identity, addresses, specialties, licenses, identifiers and endpoints. Last updated by the provider on Sep 24, 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.