Douglas Hempel, M.D.

Primary specialty

Rheumatology PhysicianTaxonomy code 207RR0500X

License

42869 Issued in WI

Practice address

20800 Swenson Dr Ste 175
Waukesha, WI 53186-4000

Phone

(262) 785-0777

Fax

(262) 785-0610

NPI assigned

Aug 3, 2005

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

Other identifiers 2

Medicare fee-for-service enrollment

Enrolled in WI

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

Specialty

Rheumatology

Education

Medical College of Wisconsin, 1998

Medicare assignment

Accepts the Medicare-approved amount as payment in full

Group practices

West Suburban Ctr for ArthritisGroup PAC ID 3274678230, 6 clinicians

Practice addresses (Care Compare)

Hospital & facility affiliations

• Waukesha Memorial Hospital Hospital, Waukesha, WI, CCN 520008
• Oconomowoc Memorial Hospital Hospital, Oconomowoc, WI, CCN 520062

Medicare enrollment (NPD)

Enrolled

Credentials

Doctor of Medicine

State licenses

Practice roles

Locations

Interoperability endpoints

• Direct secure messaging: dhempel20729@direct.phci.org

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.

• West Suburban Ctr for Arthritis

  • Rheumatology Physician
  • Waukesha, WI
  • NPI 1407857188

  Specialist

  Medicare reassignment Care Compare group NPD
• West Suburban Ctr for Arthritis

  • Non-Pharmacy Dispensing Site
  • Waukesha, WI
  • NPI 1932819505
  NPD (past)

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

• Prohealth Oconomowoc Memorial Hospital, Inc.

  • General Acute Care Hospital
  • Oconomowoc, WI
  • NPI 1366420531
  Care Compare affiliation
• Prohealth Oconomowoc Memorial Hospital, Inc.

  dba ProHealth Pharmacy - Oconomowoc

  • Community/Retail Pharmacy
  • Oconomowoc, WI
  • NPI 1497942205

  Hospital

  Care Compare affiliation
• Prohealth Waukesha Memorial Hospital, Inc.

  • General Acute Care Hospital
  • Waukesha, WI
  • NPI 1629056890
  Care Compare affiliation

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

{
    "created_epoch": "1123027200000",
    "enumeration_type": "NPI-1",
    "last_updated_epoch": "1767052800000",
    "number": "1164423844",
    "addresses": [
        {
            "country_code": "US",
            "country_name": "United States",
            "address_purpose": "MAILING",
            "address_type": "DOM",
            "address_1": "20800 SWENSON DR STE 175",
            "city": "WAUKESHA",
            "state": "WI",
            "postal_code": "531864000",
            "telephone_number": "262-785-0777",
            "fax_number": "262-785-0610"
        },
        {
            "country_code": "US",
            "country_name": "United States",
            "address_purpose": "LOCATION",
            "address_type": "DOM",
            "address_1": "20800 SWENSON DR STE 175",
            "city": "WAUKESHA",
            "state": "WI",
            "postal_code": "531864000",
            "telephone_number": "262-785-0777",
            "fax_number": "262-785-0610"
        }
    ],
    "practiceLocations": [],
    "basic": {
        "last_name": "HEMPEL",
        "first_name": "DOUGLAS",
        "name_prefix": "Dr.",
        "credential": "M.D.",
        "sole_proprietor": "NO",
        "sex": "M",
        "enumeration_date": "2005-08-03",
        "last_updated": "2025-12-30",
        "certification_date": "2025-12-30",
        "status": "A"
    },
    "taxonomies": [
        {
            "code": "207RR0500X",
            "taxonomy_group": "",
            "desc": "Internal Medicine, Rheumatology",
            "state": "WI",
            "license": "42869",
            "primary": true
        }
    ],
    "identifiers": [
        {
            "code": "05",
            "desc": "MEDICAID",
            "issuer": null,
            "identifier": "32805700",
            "state": "WI"
        },
        {
            "code": "01",
            "desc": "Other (non-Medicare)",
            "issuer": "RAILROAD MEDICARE",
            "identifier": "P00029278",
            "state": "WI"
        }
    ],
    "endpoints": [],
    "other_names": []
}

• Stephanie Helmuth, PT
• Helping Hands Personal Care LLC (Helping Hands Transportaion)
• Timothy J Helz, M.D.
• Kathleen Sue Hemauer, M.D.
• James R Hemmens, MSW
• Sharon Hempel, MS, LMFT
• Kristina Hemstead
• Isaac Jay Henderson, LPC, CSAC
• Rebecca E Hendrickson, NP
• Brandon Hennig

• Rheumatology Physician in Waukesha, WI
• Providers in Waukesha, WI by specialty
• Rheumatology Physician in Wisconsin

• NPPES NPI Registry (CMS): identity, addresses, specialties, licenses, identifiers and endpoints. Last updated by the provider on Dec 30, 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.
• 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.