RAN ZHANG M.D.
NPI 1528413762
Obstetrics & Gynecology - Gynecologic Oncology in Madison, WI
About Ran Zhang M.d. NPPES
Official registry information on file with the National Plan and Provider Enumeration System.
RAN ZHANG M.D. (NPI 1528413762) is an individual gynecologic oncology provider in Madison, Wisconsin, licensed in Wisconsin (7247620) and active in the NPI registry since April 2016. She is enrolled in Medicare PECOS, is affiliated with Aspirus Wausau Hospital, and maintains a secondary practice location in Minneapolis.
NPPES Registry Identity
Specialties & Licenses
Other Names 1
Secondary Practice Location 1
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
Ran Zhang M.d. 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
4Medicare enrollment records show Ran Zhang reassigns Medicare billing to 4 organizations. Each organization bills Medicare for the services this provider delivers there; the nearest is listed first.
Madison, WI 53715
- Reassigned Medicare billing, Wisconsin enrollment
- 1,377 clinicians in this Medicare group
Middleton, WI 53562
- Reassigned Medicare billing, Wisconsin enrollment
- 2,832 clinicians in this Medicare group
Wisconsin Rapids, WI 54494
- Reassigned Medicare billing, Wisconsin enrollment
- Medicare enrollment name: Aspirus Medical Group, Inc.
- 415 clinicians in this Medicare group
Stevens Point, WI 54482
- Reassigned Medicare billing, Wisconsin enrollment
- 633 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.
Areas of Expertise CMS Part B claims 6
Services this provider delivered to Medicare fee-for-service patients, from the CMS Medicare utilization data. Higher counts generally reflect more experience with a service; care delivered outside Medicare is not included.
Hospital Affiliations CMS Care Compare 3
Hospitals where this provider delivers care, identified from recent Medicare claims and place-of-service records.
Aspirus Wausau Hospital
Acute Care Hospitals · Wausau, WISsm Health St Mary's Hospital - Madison
Acute Care Hospitals · Madison, WIUniversity Of Wi Hospitals & Clinics Authority
Acute Care Hospitals · Madison, WIPhysician 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 Ran Zhang's NPI number?
The NPI number for Ran Zhang is 1528413762. It was assigned to this individual provider in the NPPES registry on April 25, 2016. The provider is also known as Catherine Zhang.
Where is Ran Zhang located?
Ran Zhang practices at 600 Highland Ave, Madison, WI 53792. The listed phone number is (608) 263-1700.
What is Ran Zhang's specialty?
The primary specialty registered for this NPI is Obstetrics & Gynecology, specializing in Gynecologic Oncology, with taxonomy code 207VX0201X.
Is Ran Zhang enrolled in Medicare?
Yes. Ran Zhang 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 Ran Zhang's services?
According to the CMS Revalidation Reassignment List (October 2026 release), Ran Zhang reassigns Medicare benefits to 4 organizations: Dean Health Systems, Inc (Madison, WI), University Of Wisconsin Medical Foundation, Inc (Middleton, WI), Aspirus Riverview Hospital & Clinics, Inc. (Wisconsin Rapids, WI) and Aspirus Wausau Hospital, Inc. (Stevens Point, WI). 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 Ran Zhang's services. Reassignment records can lag staffing changes; confirm current arrangements with the organization.
What insurance does Ran Zhang accept?
Health plans from Anthem Blue Cross and Blue Shield, Aspirus Health Plan, Group Health Cooperative-SCW, HealthPartners and Quartz and 1 other insurer list Ran Zhang 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.
Is Ran Zhang affiliated with any hospitals?
According to CMS data, Ran Zhang is affiliated with Aspirus Wausau Hospital, Ssm Health St Mary's Hospital - Madison and University Of Wi Hospitals & Clinics Authority.
When was this NPI record last updated?
The NPPES record for Ran Zhang was last updated on August 8, 2023. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 3 years 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.
# Ran Zhang, M.D. · NPI 1528413762
Gynecologic Oncology physician in Madison, Wisconsin. Individual provider, active in the CMS NPPES registry since April 25, 2016.
## Identity
- **NPI:** 1528413762 (Entity type: Individual)
- **Enumerated:** April 25, 2016
- **Primary specialty:** Obstetrics & Gynecology - Gynecologic Oncology · taxonomy 207VX0201X
- **State license:** 7247620 (Wisconsin)
- **Sole proprietor:** Yes
## Practice location
- **Address:** 600 HIGHLAND AVE, Madison, WI 53792-0001
- **Phone:** (608) 263-1700
## 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:** 4 organizations under Medicare reassignment (form CMS-855R): Dean Health Systems, Inc (NPI 1053358846, Madison, WI); University Of Wisconsin Medical Foundation, Inc (NPI 1598784555, Middleton, WI); Aspirus Riverview Hospital & Clinics, Inc. (NPI 1568821122, Wisconsin Rapids, WI); Aspirus Wausau Hospital, Inc. (NPI 1275886749, Stevens Point, WI) · CMS Revalidation Reassignment List, October 2026 release
- **Medical school:** University Of Iowa, Rj & L Carver College Of Medicine, class of 2016
## Record status
- **NPPES last updated:** August 8, 2023
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Source: [NPI Profile](https://npiprofile.com/npi/1528413762) · Data from the CMS NPPES public registry.