Robert Orenstein, DO
NPI 1174500565ActiveIndividual· Internal Medicine, Infectious Disease· Phoenix, AZ
Internal Medicine, Infectious Disease (DO) with Mayo Clinic Arizona and 1 other group, practicing in Phoenix, Arizona. Their prescriptions cost Medicare Part D more than their services did: $441,782 for 286 claims, against $102,612 paid for services in 2024. Ferring Pharmaceuticals Inc. reported $112.16 in payments in 2024, mostly food and beverage. Lists Banner - University Medical Center Tucson Campus and 1 other hospital as hospital affiliations.
Overview
| NPI | 1174500565 |
|---|---|
| Status | Active |
| Entity type | Individual |
| Credential | DO |
| Sole proprietor | No |
| NPI issued | Dec 27, 2005 |
| Last updated in NPPES | Sep 4, 2026 |
| Certified by provider | Sep 4, 2026 |
Specialties and licenses
| Taxonomy | Code | License | State |
|---|---|---|---|
| Internal Medicine, Infectious Disease Primary | 207RI0200X | 5472 | AZ |
| Internal Medicine, Infectious Disease | 207RI0200X | 44468 | MN |
| Internal Medicine | 207R00000X | 44468 | MN |
Exclusion screening
| List | Result | Details |
|---|---|---|
| HHS-OIG LEIE · Nov 10, 2026 | No match | Checked by NPI and by name + state |
| North Carolina Medicaid · Nov 11, 2026 | No match | — |
| New York OMIG · Nov 11, 2026 | No match | — |
| Ohio Medicaid · Nov 11, 2026 | No match | — |
| Pennsylvania Medicheck · Nov 11, 2026 | No match | — |
| Washington HCA · Nov 11, 2026 | No match | — |
Official OIG search · How matching works ·Bulk check a roster
Medicare
| Enrollment (PECOS) | Enrolled Practitioner - Infectious Disease (AZ) |
|---|---|
| Accepts assignment | Yes (participating) |
Medicare services in 2024
| Medicare patients | 331 |
|---|---|
| Services billed | 1,554 across 21 procedure codes |
| Paid by Medicare | $102,612 |
Part D prescriptions in 2024
| Prescriptions (claims) | 286 · 437 30-day fills |
|---|---|
| Patients | 77 |
| Total drug cost | $441,782 |
| Generic share | 66% of claims |
Education and affiliations
| Graduation year | 1987 |
|---|---|
| Medicare specialty | Infectious Disease |
| Secondary specialties | Internal Medicine |
| Telehealth | Offers telehealth |
Medical groups
- Mayo Clinic ArizonaScottsdale, AZ · 1,626 clinicians
- Banner-University Medical GroupTucson, AZ · 1,072 clinicians
Hospital affiliations
- Banner - University Medical Center Tucson CampusTucson, AZ
- Mayo Clinic HospitalPhoenix, AZ
Industry payments (Open Payments)
- 2024$112.16 · 1 payment from 1 company
Top paying companies in 2024
| Company | Amount | Payments |
|---|---|---|
| Ferring Pharmaceuticals Inc. | $112.16 | 1 |
What the 2024 payments were for
- Food and Beverage$112.16 · 1 payment
Receiving payments does not imply wrongdoing. What Open Payments covers ·original records
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All 84 infectious disease specialists in Phoenix · All infectious disease specialists in Arizona