Quick answers
- Which hospitals does Robert Orenstein work at?
- Medicare's official clinician data lists Robert Orenstein at 2 hospitals: Banner - University Medical Center Tucson Campus and Mayo Clinic Hospital. This is where the clinician works or has privileges; call the hospital to confirm.
- Where does Robert Orenstein see patients?
- Medicare's clinician data lists 7 practice locations, including Scottsdale, AZ, Tucson, AZ and Phoenix, AZ. Call before your visit to confirm the address.
- What is Robert Orenstein's specialty?
- Medicare lists Infectious Disease as the primary specialty, and also Internal Medicine.
- Does Robert Orenstein accept Medicare assignment?
- Yes. Medicare's clinician data says Robert Orenstein 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.
- Does Robert Orenstein offer telehealth?
- Medicare's clinician data says Robert Orenstein offers telehealth services. Ask the office which visits can be done by video or phone.
- What is the phone number for Robert Orenstein?
- (480) 301-8000, as listed in official Medicare / NPI Registry data.
- What is Robert Orenstein's NPI number?
- 1174500565. 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 Orenstein works
Medicare's Facility Affiliation Data lists Robert Orenstein at these hospitals (updated 2026-10-02). Each hospital page shows its address, phone, emergency services, Medicare rating and all its clinicians.
- Banner - University Medical Center Tucson CampusTucson, AZ · Acute Care Hospital · CCN 030064
- Mayo Clinic HospitalPhoenix, AZ · Acute Care Hospital · CCN 030103
Practice locations
Addresses where Robert Orenstein is enrolled with Medicare (CMS data updated 2026-10-02). The first 5 of 7; the Medicare profile lists all.
- 13400 E Shea BlvdScottsdale, AZ 85259 (480) 301‑8000
- 2800 E Ajo Way, Bldg 100Tucson, AZ 85713 (520) 874‑2000
- 3838 N Campbell Ave, Bldg 2Tucson, AZ 85719 (520) 694‑8888
- 5701 E Mayo BlvdPhoenix, AZ 85054 (480) 342‑4200
- 5777 E Mayo BlvdPhoenix, AZ 85054
Group practices
Medicare enrollment lists Robert Orenstein as a member of these groups (CMS data updated 2026-10-02).
- Mayo Clinic Arizona1,626 clinicians in the group
- Banner-University Medical Group1,072 clinicians in the group
Specialties
- Infectious Diseaseprimary
- Internal Medicinealso
Other infectious disease doctors in Scottsdale
Clinicians with the same Medicare primary specialty in Scottsdale, AZ — not a recommendation.
Clinician information
| Credential | DO |
|---|---|
| Graduation year | 1987 |
| Gender (as listed) | Male |
| Medicare assignment | Accepts (Medicare-approved amount as full payment) |
| Telehealth | Offers telehealth services |
| NPI (National Provider Identifier) | 1174500565 |
| 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