NPIMap

Individual provider Active NPI

Thomas Oliver, D.O

  • Hematology & Oncology Physician
  • Wausau, WI
National Provider Identifier
1083069470
Registry record updated Aug 24, 2026
On this page

Key facts

NPPES NPI Registry
Primary specialty
Hematology & Oncology PhysicianTaxonomy code 207RH0003X
License
008380 Issued in AZ
Practice address
215 N 28TH Ave
Wausau, WI 54401-4100
Phone
(715) 847-2866
NPI assigned
May 4, 2016
Last updated
Aug 24, 2026By the provider in NPPES
Sex
Male
Sole proprietor
No

NPPES NPI Registry

Updated by the provider on Aug 24, 2026

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

Specialties & licenses 2

Specialty (taxonomy)CodeLicenseStatePrimary
Internal Medicine Physician 207R00000X OS019524 PA
Hematology & Oncology Physician 207RH0003X 008380 AZ Primary

Addresses

Primary practice location

215 N 28TH Ave
Wausau, WI 54401-4100

Mailing address

215 N 28TH Ave
Wausau, WI 54401-4100
Phone (715) 847-2866

Medicare participation

Medicare enrollment files
Medicare fee-for-service enrollment
Enrolled in PA, WI2 enrollments
Eligible to order & refer
  • Part B services
  • Medical equipment
  • Home health
  • Power mobility devices
  • Hospice
Green means eligible to order or refer.

Enrollment records 2

Enrollment IDStateProvider typePAC IDDetails
I20190610001888 PA Practitioner - HospitalistPractitioner - Internal Medicine 9739477324 Reassigns benefits to 1 organization
I20230711001880 WI Practitioner - Hematology/OncologyPractitioner - Medical OncologyPractitioner - Internal Medicine 9739477324 Reassigns benefits to 8 organizations

Care Compare profile

Medicare Care Compare
Specialty
Hematology/OncologyAlso: Internal Medicine
Education
Lake Erie College of Osteopathic Medicine, Erie, 2016
Medicare assignment
Accepts the Medicare-approved amount as payment in full
Telehealth
Offers telehealth services
Group practices
Aspirus Medford Hospital and Clinics IncGroup PAC ID 5799688602, shared by 9 NPIs, 126 clinicians
Aspirus Wausau Hospital IncGroup PAC ID 6406757442, 242 clinicians

Practice addresses (Care Compare)

135 S Gibson St
Medford, WI 54451-1622
Phone (715) 748-8100

215 N 28TH Ave
Wausau, WI 54401-4100
Phone (715) 847-2866

2251 N Shore Dr
Rhinelander, WI 54501-6710

2251 N Shore Dr
Suite 200
Rhinelander, WI 54501-6712
Phone (715) 361-2000

240 Maple St
Woodruff, WI 54568-9190
Phone (715) 356-8140

900 Illinois Ave
Stevens Point, WI 54481-3114
Phone (715) 346-5000

Hospital & facility affiliations

National Provider Directory

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

State licenses

LicenseStateTypeSpecialty
008380AZMDHematology & Oncology Physician

Practice roles

OrganizationSpecialtyStatusNew patients
Aspirus Riverview Hospital & Clinics, Inc. CurrentSince Aug 1, 2023 Accepting new patients
Aspirus Riverview Hospital & Clinics, Inc. CurrentSince Aug 1, 2023 Accepting new patients
Aspirus Rhinelander & Tomahawk Hospitals & Clinics, Inc. CurrentSince Aug 1, 2023 Accepting new patients
Aspirus Stevens Point Hospital & Clinics, Inc. CurrentSince Dec 17, 2025 Accepting new patients
Aspirus Wausau Hospital, Inc. CurrentSince Aug 1, 2023 Accepting new patients
Aspirus Medford Hospital & Clinics, Inc. Current Accepting new patients
Aspirus Riverview Hospital & Clinics, Inc. Current Accepting new patients
Aspirus Medford Hospital & Clinics, Inc. CurrentSince Aug 1, 2023 Accepting new patients
Aspirus Rhinelander & Tomahawk Hospitals & Clinics, Inc. CurrentSince Aug 1, 2023 Accepting new patients
Aspirus Wausau Hospital, Inc. CurrentSince Aug 1, 2023 Accepting new patients
Aspirus Medford Hospital & Clinics, Inc. CurrentSince Aug 1, 2023 Accepting new patients
Langlade Hospital - Hotel Dieu of St. Joseph of Antigo Wisconsin CurrentSince Aug 1, 2023 Accepting new patients
Aspirus Stevens Point Hospital & Clinics, Inc. CurrentSince Dec 17, 2025 Accepting new patients
Aspirus Medical Group, Inc. CurrentSince Aug 1, 2023 Accepting new patients
Langlade Hospital - Hotel Dieu of St Joseph of Antigo Wisconsin Current Accepting new patients
Main Line Healthcare Internal Medicine CurrentSince Jun 23, 2019 Accepting new patients
Aspirus Wausau Hospital, Inc. Internal Medicine Current Accepting new patients
Aspirus Wausau Hospital, Inc. Past Accepting new patients
Aspirus Rhinelander & Tomahawk Hospitals & Clinics, Inc. Past Accepting new patients

Locations

29980 Network Pl
Chicago, IL 60673

830 Old Lancaster Rd
Ste 108
Bryn Mawr, PA 19010
Phone (610) 520-5200

100 E Lancaster Ave
Wynnewood, PA 19096
Phone (484) 337-3583

100 E Lancaster Ave
Ste 4303
Wynnewood, PA 19096
Phone (484) 476-6421

112 E 5th Ave
Antigo, WI 54409
Phone (715) 623-2331

400 W Glen St
Crandon, WI 54520
Phone (715) 478-3318

135 S Gibson St
Medford, WI 54451
Phone (715) 748-8100

2251 N Shore Dr
Ste 100
Rhinelander, WI 54501
Phone (715) 361-2074

2251 N Shore Dr
Ste 200
Rhinelander, WI 54501
Phone (715) 361-4602

900 Illinois Ave
Stevens Point, WI 54481
Phone (715) 342-7500

401 W Mohawk Dr
Ste 100
Tomahawk, WI 54487
Phone (715) 453-7700

190 Grand Seasons Dr
Waupaca, WI 54981
Phone (715) 258-3401

215 N 28th Ave
Wausau, WI 54401
Phone (715) 847-2429

333 Pine Ridge Blvd
Wausau, WI 54401
Phone (715) 847-2160

420 Dewey St
Wisconsin Rapids, WI 54494
Phone (715) 421-7474

Interoperability endpoints

  • Direct secure messaging: toliver200270@direct.aspirus.org

Organizations & group practices 20

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.

View all 20

Hospital & facility affiliations 38

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

View all 38

NPI Registry JSON

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

{
    "created_epoch": "1462320000000",
    "enumeration_type": "NPI-1",
    "last_updated_epoch": "1787529600000",
    "number": "1083069470",
    "addresses": [
        {
            "country_code": "US",
            "country_name": "United States",
            "address_purpose": "MAILING",
            "address_type": "DOM",
            "address_1": "215 N 28TH AVE",
            "city": "WAUSAU",
            "state": "WI",
            "postal_code": "544014100",
            "telephone_number": "715-847-2866"
        },
        {
            "country_code": "US",
            "country_name": "United States",
            "address_purpose": "LOCATION",
            "address_type": "DOM",
            "address_1": "215 N 28TH AVE",
            "city": "WAUSAU",
            "state": "WI",
            "postal_code": "544014100",
            "telephone_number": "715-847-2866"
        }
    ],
    "practiceLocations": [],
    "basic": {
        "last_name": "OLIVER",
        "first_name": "THOMAS",
        "name_prefix": "Dr.",
        "credential": "D.O",
        "sole_proprietor": "NO",
        "sex": "M",
        "enumeration_date": "2016-05-04",
        "last_updated": "2026-08-24",
        "certification_date": "2026-08-24",
        "status": "A"
    },
    "taxonomies": [
        {
            "code": "207R00000X",
            "taxonomy_group": "",
            "desc": "Internal Medicine",
            "state": "PA",
            "license": "OS019524",
            "primary": false
        },
        {
            "code": "207RH0003X",
            "taxonomy_group": "",
            "desc": "Internal Medicine, Hematology & Oncology",
            "state": "AZ",
            "license": "008380",
            "primary": true
        }
    ],
    "identifiers": [],
    "endpoints": [],
    "other_names": []
}

Other providers in Wausau, WI

Sources for this page

Verify at the official NPI Registry.