NPIMap

Individual provider Active NPI

James M Williams, MD

  • Family Medicine Physician
  • Kimberly, WI
National Provider Identifier
1407849433
Registry record updated Sep 18, 2026
On this page

Key facts

NPPES NPI Registry
Primary specialty
Family Medicine PhysicianTaxonomy code 207Q00000X
License
44378-020 Issued in WI
Practice address
705 Thelosen Dr
Kimberly, WI 54136-2337
Phone
(920) 360-6282
NPI assigned
Aug 24, 2005
Last updated
Sep 18, 2026By the provider in NPPES
Sex
Male
Sole proprietor
Yes

NPPES NPI Registry

Updated by the provider on Sep 18, 2026

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

Specialties & licenses 2

Specialty (taxonomy)CodeLicenseStatePrimary
Family Medicine Physician 207Q00000X 44378-020 WI Primary
Surgery Physician 208600000X 44378-020 WI

Addresses

Primary practice location

705 Thelosen Dr
Kimberly, WI 54136-2337

Mailing address

705 Thelosen Dr
Kimberly, WI 54136-2337
Phone (920) 360-6282

Other identifiers 1

IdentifierTypeStateIssuer
34203400MedicaidWI

Medicare participation

Medicare enrollment files
Medicare fee-for-service enrollment
Enrolled in WI
Eligible to order & refer
  • Part B services
  • Medical equipment
  • Home health
  • Power mobility devices
  • Hospice
Green means eligible to order or refer.

Enrollment records 1

Enrollment IDStateProvider typePAC IDDetails
I20040917001076 WI Practitioner - Family Practice 2961470919 Reassigns benefits to 2 organizations

Care Compare profile

Medicare Care Compare
Specialty
Family Practice
Education
Eastern Virginia Medical School, 1979
Medicare assignment
Accepts the Medicare-approved amount as payment in full
Group practices
Geiger Medical LLCGroup PAC ID 2163719626, 25 clinicians

Practice addresses (Care Compare)

15430 W Capitol Dr
Suite 300
Brookfield, WI 53005-2626
Phone (262) 421-5133

Hospital & facility affiliations

Merit-based Incentive Payment System (MIPS)

Final score
99.7 of 100Reported as group
Quality
90.86
Promoting interoperability
100
Improvement activities
40
Cost
74.79

National Provider Directory

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

State licenses

LicenseStateTypeSpecialty
44378-020WIMDFamily Medicine Physician

Practice roles

OrganizationSpecialtyStatusNew patients
Geiger Medical, LLC CurrentSince Dec 14, 2025 Accepting new patients
Jeffrey G. Bentson, M.D., PLLC Past Accepting new patients

Locations

15430 W Capitol Dr
Ste 100
Brookfield, WI 53005
Phone (262) 235-3115

15430 W Capitol Dr
Ste 200
Brookfield, WI 53005

Organizations & group practices 3

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.

Hospital & facility affiliations 15

Hospitals and other facilities this clinician is affiliated with according to Medicare Care Compare.

View all 15

NPI Registry JSON

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

{
    "created_epoch": "1124841600000",
    "enumeration_type": "NPI-1",
    "last_updated_epoch": "1789689600000",
    "number": "1407849433",
    "addresses": [
        {
            "country_code": "US",
            "country_name": "United States",
            "address_purpose": "MAILING",
            "address_type": "DOM",
            "address_1": "705 THELOSEN DR",
            "city": "KIMBERLY",
            "state": "WI",
            "postal_code": "541362337",
            "telephone_number": "920-360-6282"
        },
        {
            "country_code": "US",
            "country_name": "United States",
            "address_purpose": "LOCATION",
            "address_type": "DOM",
            "address_1": "705 THELOSEN DR",
            "city": "KIMBERLY",
            "state": "WI",
            "postal_code": "541362337",
            "telephone_number": "920-360-6282"
        }
    ],
    "practiceLocations": [],
    "basic": {
        "last_name": "WILLIAMS",
        "first_name": "JAMES",
        "middle_name": "M",
        "credential": "MD",
        "sole_proprietor": "YES",
        "sex": "M",
        "enumeration_date": "2005-08-24",
        "last_updated": "2026-09-18",
        "certification_date": "2026-09-18",
        "status": "A"
    },
    "taxonomies": [
        {
            "code": "207Q00000X",
            "taxonomy_group": "",
            "desc": "Family Medicine",
            "state": "WI",
            "license": "44378-020",
            "primary": true
        },
        {
            "code": "208600000X",
            "taxonomy_group": "",
            "desc": "Surgery",
            "state": "WI",
            "license": "44378-020",
            "primary": false
        }
    ],
    "identifiers": [
        {
            "code": "05",
            "desc": "MEDICAID",
            "issuer": null,
            "identifier": "34203400",
            "state": "WI"
        }
    ],
    "endpoints": [],
    "other_names": []
}

Other providers in Kimberly, WI

Sources for this page

Verify at the official NPI Registry.