Gregory Michael Cowan, M.D.
NPI 1164756904ActiveIndividual· Allergy & Immunology· Peoria, AZ
Allergy & Immunology (M.D.) in Peoria, Arizona, trained at University of South Florida College of Medicine (class of 2008). In 2024 Medicare paid $6,212,419 for 1,385 patients, and Part D covered 695 of their prescriptions, 68% of them generic. Glaxosmithkline, LLC. was the largest of 18 companies reporting payments in 2025, $1,647 in all, mostly food and beverage.
Overview
| NPI | 1164756904 |
|---|---|
| Status | Active |
| Entity type | Individual |
| Credential | M.D. |
| Sole proprietor | No |
| NPI issued | Sep 27, 2009 |
| Last updated in NPPES | Oct 26, 2021 |
| Certified by provider | Oct 26, 2021 |
Specialties and licenses
| Taxonomy | Code | License | State |
|---|---|---|---|
| Allergy & Immunology Primary | 207K00000X | 48556 | AZ |
| Allergy & Immunology | 207K00000X | ME110800 | FL |
| Pediatrics | 208000000X | ME110800 | FL |
| Pediatrics | 208000000X | 48556 | 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 - Allergy/Immunology (AZ) |
|---|---|
| Accepts assignment | Yes (participating) |
Medicare services in 2024
| Medicare patients | 1,385 |
|---|---|
| Services billed | 525,480 across 54 procedure codes |
| Paid by Medicare | $6,212,419 |
Part D prescriptions in 2024
| Prescriptions (claims) | 695 · 1,013 30-day fills |
|---|---|
| Patients | 122 |
| Total drug cost | $350,319 |
| Generic share | 68% of claims |
Education and affiliations
| Medical school | University of South Florida College of Medicine |
|---|---|
| Graduation year | 2008 |
| Medicare specialty | Allergy/Immunology |
Medical group
- Livwell Health LLCTucson, AZ · 9 clinicians
Industry payments (Open Payments)
- 2025$1,647 · 103 payments from 18 companies
- 2024$399.96 · 27 payments from 9 companies
Top paying companies in 2025
| Company | Amount | Payments |
|---|---|---|
| Glaxosmithkline, LLC. | $237.77 | 21 |
| Astrazeneca Pharmaceuticals LP | $230.39 | 21 |
| Genzyme Corporation | $224.18 | 11 |
| Takeda Pharmaceuticals U.S.A., Inc. | $202.18 | 17 |
| Novartis Pharmaceuticals Corporation | $182.81 | 11 |
What the 2025 payments were for
- Food and Beverage$1,510 · 98 payments
- Education$85.00 · 1 payment
- Consulting Fee$51.44 · 4 payments
Receiving payments does not imply wrongdoing. What Open Payments covers ·original records
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