Individual provider Active NPI

Ryan Austin Denu, MD, PHD

  • Medical Oncology Physician
  • Madison, WI
National Provider Identifier
1881220739
Registry record updated Jul 7, 2026
On this page

Key facts

NPPES NPI Registry
Primary specialty
Medical Oncology PhysicianTaxonomy code 207RX0202X
License
87263-20 Issued in WI
Practice address
600 Highland Ave
Madison, WI 53792-0001
Phone
(608) 915-0100
Fax
(608) 266-6020
NPI assigned
Mar 22, 2020
Last updated
Jul 7, 2026By the provider in NPPES
Sex
Male
Sole proprietor
No

NPPES NPI Registry

Updated by the provider on Jul 7, 2026

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

Specialties & licenses 4

Specialty (taxonomy)CodeLicenseStatePrimary
Student in an Organized Health Care Education/Training Program 390200000X NU
Internal Medicine Physician 207R00000X T6872 TX
Hematology & Oncology Physician 207RH0003X 87263-20 WI
Medical Oncology Physician 207RX0202X 87263-20 WI Primary

Addresses

Primary practice location

600 Highland Ave
Madison, WI 53792-0001

Mailing address

7974 Uw Health CT
Middleton, WI 53562-5531

Other practice location 1

4621 Eastpark Blvd
Madison, WI 53718-2000
Phone (608) 915-0100

Other practice location 2

1515 Holcombe Blvd
Houston, TX 77030-4000
Phone (713) 792-6161

Medicare participation

Medicare enrollment files
Medicare fee-for-service enrollment
Enrolled in TX
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

Enrollment IDStateProvider typePAC IDDetails
I20221130001999 TX Practitioner - Internal Medicine 2163890823 Reassigns benefits to 1 organization

Care Compare profile

Medicare Care Compare
Specialty
Internal Medicine
Education
University of Wisconsin School of Medicine, 2020
Medicare assignment
Accepts the Medicare-approved amount as payment in full
Telehealth
Offers telehealth services
Group practices
Physicians Referral ServiceGroup PAC ID 7911801410, 2,728 clinicians

Practice addresses (Care Compare)

1515 Holcombe Blvd
Houston, TX 77030-4000
Phone (713) 792-2121

Hospital & facility affiliations

National Provider Directory

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

State licenses

LicenseStateTypeSpecialty
T6872TXMDInternal Medicine Physician

Practice roles

OrganizationSpecialtyStatusNew patients
Physicians Referral Service CurrentSince Oct 19, 2022 Accepting new patients

Locations

1515 Holcombe Blvd
Houston, TX 77030
Phone (713) 794-5446

1515 Holcombe Blvd
#M
Houston, TX 77030
Phone (713) 792-6127

1515 Holcombe Blvd
#R4212
Houston, TX 77030
Phone (713) 794-5446

Organizations & group practices 1

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 1

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

NPI Registry JSON

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

{
    "created_epoch": "1584835200000",
    "enumeration_type": "NPI-1",
    "last_updated_epoch": "1783382400000",
    "number": "1881220739",
    "addresses": [
        {
            "country_code": "US",
            "country_name": "United States",
            "address_purpose": "MAILING",
            "address_type": "DOM",
            "address_1": "7974 UW HEALTH CT",
            "city": "MIDDLETON",
            "state": "WI",
            "postal_code": "535625531"
        },
        {
            "country_code": "US",
            "country_name": "United States",
            "address_purpose": "LOCATION",
            "address_type": "DOM",
            "address_1": "600 HIGHLAND AVE",
            "city": "MADISON",
            "state": "WI",
            "postal_code": "537920001",
            "telephone_number": "608-915-0100",
            "fax_number": "608-266-6020"
        }
    ],
    "practiceLocations": [
        {
            "address_1": "4621 Eastpark Blvd",
            "address_purpose": "LOCATION",
            "city": "Madison",
            "state": "WI",
            "postal_code": "537182000",
            "country_code": "US",
            "telephone_number": "608-915-0100",
            "fax_number": "608-266-6020",
            "country_name": "United States",
            "address_type": "DOM"
        },
        {
            "address_1": "1515 Holcombe Blvd",
            "address_purpose": "LOCATION",
            "city": "Houston",
            "state": "TX",
            "postal_code": "770304000",
            "country_code": "US",
            "telephone_number": "713-792-6161",
            "country_name": "United States",
            "address_type": "DOM"
        }
    ],
    "basic": {
        "last_name": "DENU",
        "first_name": "RYAN",
        "middle_name": "AUSTIN",
        "name_prefix": "Dr.",
        "credential": "MD, PHD",
        "sole_proprietor": "NO",
        "sex": "M",
        "enumeration_date": "2020-03-22",
        "last_updated": "2026-07-07",
        "certification_date": "2026-07-07",
        "status": "A"
    },
    "taxonomies": [
        {
            "code": "390200000X",
            "taxonomy_group": "",
            "desc": "Student in an Organized Health Care Education/Training Program",
            "state": "NU",
            "license": null,
            "primary": false
        },
        {
            "code": "207R00000X",
            "taxonomy_group": "",
            "desc": "Internal Medicine",
            "state": "TX",
            "license": "T6872",
            "primary": false
        },
        {
            "code": "207RH0003X",
            "taxonomy_group": "",
            "desc": "Internal Medicine, Hematology & Oncology",
            "state": "WI",
            "license": "87263-20",
            "primary": false
        },
        {
            "code": "207RX0202X",
            "taxonomy_group": "",
            "desc": "Internal Medicine, Medical Oncology",
            "state": "WI",
            "license": "87263-20",
            "primary": true
        }
    ],
    "identifiers": [],
    "endpoints": [],
    "other_names": []
}

Other providers in Madison, WI

Sources for this page

Verify at the official NPI Registry.