Robert J Tillotson, DO

Primary specialty

Emergency Medicine PhysicianTaxonomy code 207P00000X

License

38499 Issued in WI

Practice address

1221 Whipple St
Eau Claire, WI 54703-5270

Phone

(715) 838-5222

NPI assigned

Feb 28, 2007

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

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

Emergency Medicine

Education

Michigan State University College of Human Medicine, 1984

Medicare assignment

Accepts the Medicare-approved amount as payment in full

Group practices

Mayo Clinic Health System-Northwest Wisconsin Region IncGroup PAC ID 4385553627, shared by 21 NPIs, 797 clinicians

Practice addresses (Care Compare)

Hospital & facility affiliations

• Mayo Clinic Health System Eau Claire Hospital Hospital, Eau Claire, WI, CCN 520070
• Mayo Clinic Health System-Northland Hospital, Barron, WI, CCN 521315
• Mayo Clinic Health System-Red Cedar Inc Hospital, Menomonie, WI, CCN 521340

Medicare enrollment (NPD)

Enrolled

Credentials

Doctor of Osteopathy

Practice roles

Locations

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.

• Aspirus Merrill Hospital & Clinics, Inc.

  • Critical Access Hospital
  • Merrill, WI
  • NPI 1124084678
  Medicare reassignment NPD
• Mayo Clinic Health System-Northwest Wisconsin Region, Inc.

  • Critical Access Hospital
  • Menomonie, WI
  • NPI 1154372944
  Medicare reassignment NPD
• Mayo Clinic Health System-Northwest Wisconsin Region, Inc.

  • Multi-Specialty Clinic/Center
  • Eau Claire, WI
  • NPI 1235588831
  Medicare reassignment NPD
• Mayo Clinic Health System-Northwest Wisconsin Region, Inc.

  • Critical Access Hospital
  • Bloomer, WI
  • NPI 1700837812
  Medicare reassignment
• Mayo Clinic Health System-Northwest Wisconsin Region, Inc.

  • Critical Access Hospital
  • Barron, WI
  • NPI 1740239557
  Medicare reassignment
• Mayo Clinic Health System-Northwest Wisconsin Region, Inc.

  • Critical Access Hospital
  • Osseo, WI
  • NPI 1912958026
  Medicare reassignment
• Aspirus Merrill Hospital & Clinics, Inc.

  • Medicare Defined Swing Bed Hospital Unit
  • Merrill, WI
  • NPI 1407096266
  NPD
• Mayo Clinic Health System-Northwest Wisconsin Region, Inc.

  • Rural Health Clinic/Center
  • Mondovi, WI
  • NPI 1174116669
  NPD
• Mayo Clinic Health System-Northwest Wisconsin Region, Inc.

  • Multi-Specialty Clinic/Center
  • Barron, WI
  • NPI 1518494244
  NPD

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

• Mayo Clinic Health System-Northwest Wisconsin Region, Inc.

  • Critical Access Hospital
  • Menomonie, WI
  • NPI 1154372944
  Care Compare affiliation
• Mayo Clinic Health System-Northwest Wisconsin Region, Inc.

  • General Acute Care Hospital
  • Eau Claire, WI
  • NPI 1629027578
  Care Compare affiliation
• Mayo Clinic Health System-Northwest Wisconsin Region, Inc.

  • Critical Access Hospital
  • Barron, WI
  • NPI 1740239557
  Care Compare affiliation

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

{
    "created_epoch": "1172620800000",
    "enumeration_type": "NPI-1",
    "last_updated_epoch": "1783641600000",
    "number": "1679601983",
    "addresses": [
        {
            "country_code": "US",
            "country_name": "United States",
            "address_purpose": "MAILING",
            "address_type": "DOM",
            "address_1": "200 1ST ST SW",
            "city": "ROCHESTER",
            "state": "MN",
            "postal_code": "559050001",
            "telephone_number": "715-838-5222"
        },
        {
            "country_code": "US",
            "country_name": "United States",
            "address_purpose": "LOCATION",
            "address_type": "DOM",
            "address_1": "1221 WHIPPLE ST",
            "city": "EAU CLAIRE",
            "state": "WI",
            "postal_code": "547035270",
            "telephone_number": "715-838-5222"
        }
    ],
    "practiceLocations": [
        {
            "address_1": "900 Illinois Avenue",
            "address_purpose": "LOCATION",
            "city": "Stevens Point",
            "state": "WI",
            "postal_code": "54481",
            "country_code": "US",
            "telephone_number": "715-346-5000",
            "country_name": "United States",
            "address_type": "DOM"
        },
        {
            "address_1": "900 Illinois Avenue",
            "address_purpose": "LOCATION",
            "city": "Stevens Point",
            "state": "WI",
            "postal_code": "54481",
            "country_code": "US",
            "telephone_number": "715-346-5000",
            "country_name": "United States",
            "address_type": "DOM"
        },
        {
            "address_1": "1400 Bellinger St",
            "address_purpose": "LOCATION",
            "city": "Eau Claire",
            "state": "WI",
            "postal_code": "547035222",
            "country_code": "US",
            "telephone_number": "715-838-3635",
            "country_name": "United States",
            "address_type": "DOM"
        }
    ],
    "basic": {
        "last_name": "TILLOTSON",
        "first_name": "ROBERT",
        "middle_name": "J",
        "credential": "DO",
        "sole_proprietor": "NO",
        "sex": "M",
        "enumeration_date": "2007-02-28",
        "last_updated": "2026-07-10",
        "certification_date": "2026-07-10",
        "status": "A"
    },
    "taxonomies": [
        {
            "code": "207P00000X",
            "taxonomy_group": "",
            "desc": "Emergency Medicine",
            "state": "WI",
            "license": "38499",
            "primary": true
        }
    ],
    "identifiers": [],
    "endpoints": [],
    "other_names": []
}

• Mariah Lynn Thums
• Adrian K. Thur, PT
• Jennifer J Thyssen, NP
• Bonnie Jean Tibbitts, OTR
• Alay Gebremedhin Tikue, MD
• Lauren Christine Tilseth
• Iansa Tinkle, LPC, MT-BC
• Sadrionne Kuira Tinnon
• Tinu Health LLC
• Thomas Allen Tio, RDN

• Emergency Medicine Physician in Eau Claire, WI
• Providers in Eau Claire, WI by specialty
• Emergency Medicine Physician in Wisconsin

• NPPES NPI Registry (CMS): identity, addresses, specialties, licenses, identifiers and endpoints. Last updated by the provider on Jul 10, 2026; 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.