Quick answers
- Which hospitals does Robert Irwin work at?
- Medicare's official clinician data lists Robert Irwin at 2 hospitals: Northwest Medical Center and Oro Valley Hospital. This is where the clinician works or has privileges; call the hospital to confirm.
- Where does Robert Irwin see patients?
- Medicare's clinician data lists 1 practice location in Oro Valley, AZ. Call before your visit to confirm the address.
- What is Robert Irwin's specialty?
- Medicare lists Internal Medicine as the primary specialty.
- Does Robert Irwin accept Medicare assignment?
- Yes. Medicare's clinician data says Robert Irwin 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 Robert Irwin?
- (520) 825-9656, as listed in official Medicare / NPI Registry data.
- What is Robert Irwin's NPI number?
- 1215948039. The NPI (National Provider Identifier) is the clinician's permanent federal ID; you can look it up in the official NPI Registry.
Hospitals where Robert Irwin works
Medicare's Facility Affiliation Data lists Robert Irwin 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
Practice locations
Addresses where Robert Irwin is enrolled with Medicare (CMS data updated 2026-10-02).
- 1834 E Innovation Park DrOro Valley, AZ 85755 (520) 825‑9656
Group practices
Medicare enrollment lists Robert Irwin as a member of this group (CMS data updated 2026-10-02).
- Desert Sage Internal Medicine Ltd2 clinicians in the group
Specialties
- Internal Medicineprimary
Other internal medicine doctors in Oro Valley
Clinicians with the same Medicare primary specialty in Oro Valley, AZ — not a recommendation.
Clinician information
| Credential | MD |
|---|---|
| Medical school | University Of Missouri, Columbia School Of Medicine |
| Graduation year | 1997 |
| Gender (as listed) | Male |
| Medicare assignment | Accepts (Medicare-approved amount as full payment) |
| NPI (National Provider Identifier) | 1215948039 |
| 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