Quick answers
- Which hospitals does Isabel C. Nellen work at?
- Medicare's official clinician data lists Isabel C. Nellen at 1 hospital: University of WI Hospitals & Clinics Authority. This is where the clinician works or has privileges; call the hospital to confirm.
- Where does Isabel C. Nellen see patients?
- Medicare's clinician data lists 1 practice location in Madison, WI. Call before your visit to confirm the address.
- What is Isabel C. Nellen's specialty?
- Medicare lists Obstetrics/Gynecology as the primary specialty.
- Does Isabel C. Nellen accept Medicare assignment?
- Yes. Medicare's clinician data says Isabel C. Nellen accepts Medicare assignment (the Medicare-approved amount as full payment for covered services), as of 2026-10-02. Ask the office to confirm before your visit.
- What is the phone number for Isabel C. Nellen?
- (608) 729-6300, as listed in official Medicare / NPI Registry data.
- What is Isabel C. Nellen's NPI number?
- 1508220344. The NPI (National Provider Identifier) is the clinician's permanent federal ID; you can look it up in the official NPI Registry.
Hospitals where Isabel C. Nellen works
Medicare's Facility Affiliation Data lists Isabel C. Nellen at these hospitals (updated 2026-10-02). Each hospital page shows its address, phone, emergency services, Medicare rating and all its clinicians.
- University of WI Hospitals & Clinics AuthorityMadison, WI · Acute Care Hospital · CCN 520098
Practice locations
Addresses where Isabel C. Nellen is enrolled with Medicare (CMS data updated 2026-10-02).
- 5801 Research Park Blvd, Suite 400Madison, WI 53719 (608) 729‑6300
Group practices
Medicare enrollment lists Isabel C. Nellen as a member of this group (CMS data updated 2026-10-02).
- Madison Womens Health LLP7 clinicians in the group
Specialties
- Obstetrics/Gynecologyprimary
Other OB-GYNs in Madison
Clinicians with the same Medicare primary specialty in Madison, WI — not a recommendation.
Clinician information
| Credential | DO |
|---|---|
| Graduation year | 2016 |
| Gender (as listed) | Female |
| Medicare assignment | Accepts (Medicare-approved amount as full payment) |
| NPI (National Provider Identifier) | 1508220344 |
| Corrections | Report an error or suggest an update → |
Most corrections must be made at the source: clinicians update their NPI Registry record (NPPES) and their Medicare enrollment (PECOS); this page follows the next data release.
Sources
- Facility Affiliation Data — Centers for Medicare & Medicaid Services (CMS), data updated 2026-10-02, retrieved 2026-10-29
- National Downloadable File (Doctors and Clinicians) — CMS, data updated 2026-10-02, retrieved 2026-10-29
- NPI Registry — U.S. Department of Health and Human Services (NPPES), the clinician’s official record
- Medicare Care Compare — official Medicare tool to look up clinicians