DR. RYAN AUSTIN DENU MD, PHD
NPI 1881220739
Internal Medicine - Medical Oncology in Madison, WI
About Dr. Ryan Austin Denu Md, Phd NPPES
Official registry information on file with the National Plan and Provider Enumeration System.
DR. RYAN AUSTIN DENU MD, PHD (NPI 1881220739) is an individual medical oncology provider in Madison, Wisconsin, licensed in Wisconsin (87263-20) and active in the NPI registry since March 2020. He is enrolled in Medicare PECOS, maintains 2 additional practice locations, and is a graduate of University Of Wisconsin School Of Medicine (2020).
NPPES Registry Identity
Specialties & Licenses 4
Secondary Practice Locations 2
Accepted Insurance
Medicare Participation & PECOS CMS
Medicare enrollment, assignment, billing reassignment, and ordering and referring status from CMS.
Medicare Enrollment Status
Enrolled in Medicare and accepts Medicare assignment
Dr. Ryan Austin Denu Md, Phd is registered in PECOS and agrees to accept the Medicare-approved amount as full payment. Medicare patients are not billed beyond the standard deductible and coinsurance.
Medicare Billing Reassignments
2Medicare enrollment records show Ryan Denu reassigns Medicare billing to 2 organizations. Each organization bills Medicare for the services this provider delivers there; the nearest is listed first.
Middleton, WI 53562
- Reassigned Medicare billing, Wisconsin enrollment
- 2,832 clinicians in this Medicare group
Houston, TX 77030
- Reassigned Medicare billing, Texas enrollment
- 2,675 clinicians in this Medicare group
Source: CMS Revalidation Reassignment List, October 2026 release. Reassignment records can lag staffing changes; confirm a current affiliation with the organization.
Physician Visit Costs CMS claims · ZIP area
Typical Medicare office-visit costs in the 53792 ZIP code area, from fee-for-service claims. These are area statistics, not this provider’s prices; actual charges vary by service and coverage.
Other Providers at the Same Location NPPES 20
Providers registered at the same practice address, or within the immediate area, according to the NPPES registry.
MADISON, WI 53792
MADISON, WI 53792
Frequently Asked Questions NPPES & CMS
Common questions about this NPI record, answered from the official NPPES registry and CMS datasets shown on this page.
What is Ryan Denu's NPI number?
The NPI number for Ryan Denu is 1881220739. It was assigned to this individual provider in the NPPES registry on March 22, 2020.
Where is Ryan Denu located?
Ryan Denu practices at 600 Highland Ave, Madison, WI 53792. The listed phone number is (608) 915-0100.
What is Ryan Denu's specialty?
The primary specialty registered for this NPI is Internal Medicine, specializing in Medical Oncology, with taxonomy code 207RX0202X.
Is Ryan Denu enrolled in Medicare?
Yes. Ryan Denu is registered in the Medicare PECOS system and accepts Medicare assignment, which means accepting the Medicare-approved amount as payment in full for covered services.
Which organizations bill Medicare for Ryan Denu's services?
According to the CMS Revalidation Reassignment List (October 2026 release), Ryan Denu reassigns Medicare benefits to 2 organizations: University Of Wisconsin Medical Foundation, Inc (Middleton, WI) and Physicians Referral Service (Houston, TX). Each reassignment is filed with Medicare on form CMS-855R, signed by both the clinician and the organization, and lets the organization bill Medicare and receive payment for Ryan Denu's services. Reassignment records can lag staffing changes; confirm current arrangements with the organization.
What insurance does Ryan Denu accept?
Health plans from Anthem Blue Cross and Blue Shield, Aspirus Health Plan, Group Health Cooperative-SCW, HealthPartners and Quartz list Ryan Denu as in-network in at least one marketplace plan. Coverage varies by plan and year; verify with the insurer or the provider before a visit.
When was this NPI record last updated?
The NPPES record for Ryan Denu was last updated on July 7, 2026. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 3 months ago. If this record has changed at CMS more recently, you can request an on-demand re-check against the live CMS registry, directly from this page.
# Dr. Ryan Austin Denu, MD, PHD · NPI 1881220739
Medical Oncology physician in Madison, Wisconsin. Individual provider, active in the CMS NPPES registry since March 22, 2020.
## Identity
- **NPI:** 1881220739 (Entity type: Individual)
- **Enumerated:** March 22, 2020
- **Primary specialty:** Internal Medicine - Medical Oncology · taxonomy 207RX0202X
- **State license:** 87263-20 (Wisconsin)
- **Sole proprietor:** No
## Practice location
- **Address:** 600 HIGHLAND AVE, Madison, WI 53792-0001
- **Phone:** (608) 915-0100 · **Fax:** (608) 266-6020
## Medicare
- **Medicare:** Enrolled (PECOS); accepts Medicare assignment
- **Ordering & referring:** eligible for Part B labs & imaging, durable medical equipment, home health, power mobility devices
- **Bills Medicare through:** 2 organizations under Medicare reassignment (form CMS-855R): University Of Wisconsin Medical Foundation, Inc (NPI 1598784555, Middleton, WI); Physicians Referral Service (NPI 1073574810, Houston, TX) · CMS Revalidation Reassignment List, October 2026 release
- **Medical school:** University Of Wisconsin School Of Medicine, class of 2020
## Record status
- **NPPES last updated:** July 7, 2026
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Source: [NPI Profile](https://npiprofile.com/npi/1881220739) · Data from the CMS NPPES public registry.