Quick answers
- Which hospitals does Katharine A. Castillo work at?
- Medicare's official clinician data lists Katharine A. Castillo at 3 hospitals: Northwest Medical Center, Oro Valley Hospital and Tucson Medical Center. This is where the clinician works or has privileges; call the hospital to confirm.
- Where does Katharine A. Castillo see patients?
- Medicare's clinician data lists 1 practice location in Tucson, AZ. Call before your visit to confirm the address.
- What is Katharine A. Castillo's specialty?
- Medicare lists Nurse Practitioner as the primary specialty.
- Does Katharine A. Castillo accept Medicare assignment?
- Yes. Medicare's clinician data says Katharine A. Castillo 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 Katharine A. Castillo?
- (520) 498-6467, as listed in official Medicare / NPI Registry data.
- What is Katharine A. Castillo's NPI number?
- 1912435009. The NPI (National Provider Identifier) is the clinician's permanent federal ID; you can look it up in the official NPI Registry.
Hospitals where Katharine A. Castillo works
Medicare's Facility Affiliation Data lists Katharine A. Castillo at these hospitals (updated 2026-10-02). Each hospital page shows its address, phone, emergency services, Medicare rating and all its clinicians.
- Northwest Medical CenterTucson, AZ · Acute Care Hospital · CCN 030085
- Oro Valley HospitalOro Valley, AZ · Acute Care Hospital · CCN 030114
- Tucson Medical CenterTucson, AZ · Acute Care Hospital · CCN 030006
Practice locations
Addresses where Katharine A. Castillo is enrolled with Medicare (CMS data updated 2026-10-02).
- 551 W Magee RdTucson, AZ 85704 (520) 498‑6467
Group practices
Medicare enrollment lists Katharine A. Castillo as a member of this group (CMS data updated 2026-10-02).
- Tucson Physician Group Holdings LLC201 clinicians in the group
Specialties
- Nurse Practitionerprimary
Other nurse practitioners in Tucson
Clinicians with the same Medicare primary specialty in Tucson, AZ — not a recommendation.
Clinician information
| Graduation year | 2017 |
|---|---|
| Gender (as listed) | Female |
| Medicare assignment | Accepts (Medicare-approved amount as full payment) |
| NPI (National Provider Identifier) | 1912435009 |
| 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