Ranran Zhang, PH.D., M.D.
NPI 1205254539ActiveIndividual· Pathology, Anatomic Pathology & Clinical Pathology· Madison, WI
Pathology, Anatomic Pathology & Clinical Pathology (PH.D., M.D.) with Mercy Health System Corporation and 1 other group, practicing in Madison, Wisconsin. Medicare paid $67,914 for services to 751 patients in 2024. Lists Mercy Health System Corp and 1 other hospital as hospital affiliations.
Overview
| NPI | 1205254539 |
|---|---|
| Status | Active |
| Entity type | Individual |
| Credential | PH.D., M.D. |
| Sole proprietor | No |
| NPI issued | Apr 3, 2014 |
| Last updated in NPPES | Apr 1, 2026 |
| Certified by provider | Apr 1, 2026 |
Specialties and licenses
| Taxonomy | Code | License | State |
|---|---|---|---|
| Pathology, Anatomic Pathology & Clinical Pathology Primary | 207ZP0102X | 65896 | WI |
| Pathology, Anatomic Pathology & Clinical Pathology | 207ZP0102X | 036.171342 | IL |
| Student in an Organized Health Care Education/Training Program | 390200000X | — | — |
Exclusion screening
| List | Result | Details |
|---|---|---|
| HHS-OIG LEIE · Nov 10, 2026 | No match | Checked by NPI and by name + state |
| North Carolina Medicaid · Nov 11, 2026 | No match | — |
| New York OMIG · Nov 11, 2026 | No match | — |
| Ohio Medicaid · Nov 11, 2026 | No match | — |
| Pennsylvania Medicheck · Nov 11, 2026 | No match | — |
| Washington HCA · Nov 11, 2026 | No match | — |
Official OIG search · How matching works ·Bulk check a roster
Medicare
| Enrollment (PECOS) | Enrolled Practitioner - Pathology (IL); Practitioner - Pathology (WI) |
|---|---|
| Accepts assignment | Yes (participating) |
Medicare services in 2024
| Medicare patients | 751 |
|---|---|
| Services billed | 2,544 across 37 procedure codes |
| Paid by Medicare | $67,914 |
Education and affiliations
| Graduation year | 2013 |
|---|---|
| Medicare specialty | Pathology |
Medical groups
- Mercy Health System CorporationJanesville, WI · 753 clinicians
- Rockford Health PhysiciansRockford, IL · 521 clinicians
Hospital affiliations
- Mercy Health System CorpJanesville, WI
- Mercy Walworth Hospital & Medical CenterLake Geneva, WI
Industry payments (Open Payments)
None reported for 2025 or 2024.
Receiving payments does not imply wrongdoing. What Open Payments covers ·original records
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All 58 pathologists in Madison · All pathologists in Wisconsin