Gregory Martin Metz, M.D.
NPI 1174797062ActiveIndividual· Allergy & Immunology, Allergy· Oklahoma City, OK
Allergy & Immunology, Allergy (M.D.) in Oklahoma City, Oklahoma, trained at University of Oklahoma College of Medicine (class of 2004). Their prescriptions cost Medicare Part D more than their services did: $1,288,820 for 1,278 claims, against $282,928 paid for services in 2024. Genzyme Corporation was the largest of 16 companies reporting payments in 2025, $1,445 in all, mostly food and beverage.
Overview
| NPI | 1174797062 |
|---|---|
| Status | Active |
| Entity type | Individual |
| Credential | M.D. |
| Sole proprietor | No |
| NPI issued | Apr 22, 2008 |
| Last updated in NPPES | Oct 12, 2016 |
Specialties and licenses
| Taxonomy | Code | License | State |
|---|---|---|---|
| Allergy & Immunology, Allergy Primary | 207KA0200X | 27997 | OK |
| Specialist | 174400000X | 27997 | OK |
| Allergy & Immunology, Allergy | 207KA0200X | 122355 | NC |
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 (OK) |
|---|---|
| Accepts assignment | Yes (participating) |
Medicare services in 2024
| Medicare patients | 586 |
|---|---|
| Services billed | 21,981 across 32 procedure codes |
| Paid by Medicare | $282,928 |
Part D prescriptions in 2024
| Prescriptions (claims) | 1,278 · 2,127 30-day fills |
|---|---|
| Patients | 237 |
| Total drug cost | $1,288,820 |
| Generic share | 66% of claims |
Education and affiliations
| Medical school | University of Oklahoma College of Medicine |
|---|---|
| Graduation year | 2004 |
| Medicare specialty | Allergy/Immunology |
| Secondary specialties | Internal Medicine |
| Telehealth | Offers telehealth |
Medical group
- Oklahoma Allergy and Asthma ClinicOklahoma City, OK · 12 clinicians
Industry payments (Open Payments)
- 2025$1,445 · 63 payments from 16 companies
- 2024$835.03 · 43 payments from 14 companies
Top paying companies in 2025
| Company | Amount | Payments |
|---|---|---|
| Genzyme Corporation | $330.61 | 11 |
| Regeneron Healthcare Solutions, Inc. | $265.73 | 9 |
| Csl Behring | $170.15 | 8 |
| Blueprint Medicines Corporation | $155.38 | 3 |
| Glaxosmithkline, LLC. | $153.59 | 15 |
What the 2025 payments were for
- Food and Beverage$1,376 · 62 payments
- Education$69.81 · 1 payment
Receiving payments does not imply wrongdoing. What Open Payments covers ·original records
Other Allergy & Immunology, Allergy providers in Oklahoma City
- 1255868485
- 1306808928