Roy Loewenstein, MD
NPI 1295793941ActiveIndividual· Internal Medicine· Tucson, AZ
Internal Medicine (MD) in Tucson, Arizona, trained at University of Washington School of Medicine (class of 2001). Their prescriptions cost Medicare Part D more than their services did: $938,305 for 10,930 claims, against $382,296 paid for services in 2024. Pfizer Inc. was the largest of 7 companies reporting payments in 2025, $220.76 in all, mostly food and beverage.
Overview
| NPI | 1295793941 |
|---|---|
| Status | Active |
| Entity type | Individual |
| Credential | MD |
| Sole proprietor | No |
| NPI issued | May 3, 2006 |
| Last updated in NPPES | Jun 25, 2026 |
| Certified by provider | Jun 25, 2026 |
Specialties and licenses
| Taxonomy | Code | License | State |
|---|---|---|---|
| Internal Medicine Primary | 207R00000X | 31081 | AZ |
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 - Internal Medicine (AZ) |
|---|---|
| Accepts assignment | Yes (participating) |
Medicare services in 2024
| Medicare patients | 816 |
|---|---|
| Services billed | 11,213 across 114 procedure codes |
| Paid by Medicare | $382,296 |
Part D prescriptions in 2024
| Prescriptions (claims) | 10,930 · 28,187 30-day fills |
|---|---|
| Patients | 1,013 |
| Total drug cost | $938,305 |
| Generic share | 89% of claims |
Education and affiliations
| Medical school | University of Washington School of Medicine |
|---|---|
| Graduation year | 2001 |
| Medicare specialty | Internal Medicine |
Medical group
- Arizona Community Physicians PCTucson, AZ · 161 clinicians
Hospital affiliations
- Northwest Medical CenterTucson, AZ
- St Joseph's HospitalTucson, AZ
- Tucson Medical CenterTucson, AZ
Other facilities
- Bayada Home Health Care, IncHome health agency · Tucson, AZ
- Dependable Home Health, IncHome health agency · Tucson, AZ
- Sacred Heart Home Health Care - TucsonHome health agency · Tucson, AZ
Industry payments (Open Payments)
- 2025$220.76 · 11 payments from 7 companies
- 2024$148.95 · 9 payments from 5 companies
Top paying companies in 2025
| Company | Amount | Payments |
|---|---|---|
| Pfizer Inc. | $46.10 | 2 |
| Glaxosmithkline, LLC. | $44.42 | 3 |
| Sanofi Pasteur Inc. | $41.72 | 2 |
| Novartis Pharmaceuticals Corporation | $32.24 | 1 |
| Merck Sharp & Dohme LLC | $25.03 | 1 |
What the 2025 payments were for
- Food and Beverage$220.76 · 11 payments
Receiving payments does not imply wrongdoing. What Open Payments covers ·original records
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All 742 internal medicine physicians in Tucson · All internal medicine physicians in Arizona