Gregory L. Miller, DO
NPI 1821040783ActiveIndividual· Internal Medicine· Tucson, AZ
Internal Medicine (DO) in Tucson, Arizona, trained at Ohio University, College of Osteopathic Medicine (class of 1984). Their prescriptions cost Medicare Part D more than their services did: $574,688 for 6,263 claims, against $26,192 paid for services in 2024.
Overview
| NPI | 1821040783 |
|---|---|
| Status | Active |
| Entity type | Individual |
| Credential | DO |
| Sole proprietor | No |
| NPI issued | May 17, 2006 |
| Last updated in NPPES | Sep 18, 2025 |
| Certified by provider | Sep 18, 2025 |
Specialties and licenses
| Taxonomy | Code | License | State |
|---|---|---|---|
| Internal Medicine Primary | 207R00000X | 4005 | AZ |
| Emergency Medicine | 207P00000X | 34-003773 | OH |
| Emergency Medicine | 207P00000X | 69191 | WI |
| Internal Medicine | 207R00000X | 4005 | NM |
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); Practitioner - Emergency Medicine (MN); Practitioner - Emergency Medicine (OH); Practitioner - Internal Medicine (WI) |
|---|---|
| Accepts assignment | Yes (participating) |
Medicare services in 2024
| Medicare patients | 131 |
|---|---|
| Services billed | 470 across 17 procedure codes |
| Paid by Medicare | $26,192 |
Part D prescriptions in 2024
| Prescriptions (claims) | 6,263 · 15,689 30-day fills |
|---|---|
| Patients | 495 |
| Total drug cost | $574,688 |
| Generic share | 88% of claims |
Education and affiliations
| Medical school | Ohio University, College of Osteopathic Medicine |
|---|---|
| Graduation year | 1984 |
| Medicare specialty | Internal Medicine |
| Secondary specialties | Hospitalist |
Medical groups
- Oak Street Health Physicians Group of Arizona PLLCMesa, AZ · 81 clinicians
- Fhmc ClinicFountain Hills, AZ · 22 clinicians
Hospital affiliation
- Tucson Medical CenterTucson, AZ
Other facilities
- Bayada Home Health Care, IncHome health agency · Tucson, AZ
- Sacred Heart Home Health Care - TucsonHome health agency · Tucson, AZ
Industry payments (Open Payments)
None reported for 2025 or 2024.
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