Quick answers
- Which hospitals does Cornelia B. Masak work at?
- Medicare's official clinician data lists Cornelia B. Masak at 2 hospitals: Thedacare Regional Medical Center - Appleton Inc and Thedacare Regional Medical Center - Neenah. This is where the clinician works or has privileges; call the hospital to confirm.
- Where does Cornelia B. Masak see patients?
- Medicare's clinician data lists 1 practice location in Appleton, WI. Call before your visit to confirm the address.
- What is Cornelia B. Masak's specialty?
- Medicare lists Nurse Practitioner as the primary specialty.
- Does Cornelia B. Masak accept Medicare assignment?
- Yes. Medicare's clinician data says Cornelia B. Masak 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 Cornelia B. Masak?
- (920) 749-4000, as listed in official Medicare / NPI Registry data.
- What is Cornelia B. Masak's NPI number?
- 1740319516. The NPI (National Provider Identifier) is the clinician's permanent federal ID; you can look it up in the official NPI Registry.
Hospitals where Cornelia B. Masak works
Medicare's Facility Affiliation Data lists Cornelia B. Masak at these hospitals (updated 2026-10-02). Each hospital page shows its address, phone, emergency services, Medicare rating and all its clinicians.
- Thedacare Regional Medical Center - Appleton IncAppleton, WI · Acute Care Hospital · CCN 520160
- Thedacare Regional Medical Center - NeenahNeenah, WI · Acute Care Hospital · CCN 520045
Practice locations
Addresses where Cornelia B. Masak is enrolled with Medicare (CMS data updated 2026-10-02).
- 1818 N Meade StAppleton, WI 54911 (920) 749‑4000
Group practices
Medicare enrollment lists Cornelia B. Masak as a member of this group (CMS data updated 2026-10-02).
- Womens Health Specialists SC27 clinicians in the group
Specialties
- Nurse Practitionerprimary
Other nurse practitioners in Appleton
Clinicians with the same Medicare primary specialty in Appleton, WI — not a recommendation.
Clinician information
| Graduation year | 1984 |
|---|---|
| Gender (as listed) | Female |
| Medicare assignment | Accepts (Medicare-approved amount as full payment) |
| NPI (National Provider Identifier) | 1740319516 |
| 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