Adrian Grant Letz, MD
NPI 1033221916ActiveIndividual· Allergy & Immunology· Dubuque, IA
Allergy & Immunology (MD) in Dubuque, Iowa, trained at University of Texas Southwestern Medical School at Dallas (class of 2002). Their prescriptions cost Medicare Part D more than their services did: $209,719 for 1,224 claims, against $128,781 paid for services in 2024. Ionis Pharmaceuticals, Inc. was the largest of 2 companies reporting payments in 2025, $47.33 in all, mostly education.
Overview
| NPI | 1033221916 |
|---|---|
| Status | Active |
| Entity type | Individual |
| Credential | MD |
| Sole proprietor | No |
| NPI issued | Aug 31, 2006 |
| Last updated in NPPES | Apr 6, 2021 |
| Certified by provider | Apr 6, 2021 |
Specialties and licenses
| Taxonomy | Code | License | State |
|---|---|---|---|
| Allergy & Immunology Primary | 207K00000X | 43086 | IA |
Exclusion screening
| List | Result | Details |
|---|---|---|
| HHS-OIG LEIE · Oct 9, 2026 | No match | Checked by NPI and by name + state |
| North Carolina Medicaid · Nov 10, 2026 | No match | — |
| New York OMIG · Nov 10, 2026 | No match | — |
| Ohio Medicaid · Nov 10, 2026 | No match | — |
| Pennsylvania Medicheck · Nov 10, 2026 | No match | — |
| Washington HCA · Nov 10, 2026 | No match | — |
Official OIG search · How matching works ·Bulk check a roster
Medicare
| Enrollment (PECOS) | Enrolled Practitioner - Allergy/Immunology (IA) |
|---|---|
| Accepts assignment | Yes (participating) |
Medicare services in 2024
| Medicare patients | 123 |
|---|---|
| Services billed | 7,005 across 38 procedure codes |
| Paid by Medicare | $128,781 |
Part D prescriptions in 2024
| Prescriptions (claims) | 1,224 · 1,550 30-day fills |
|---|---|
| Patients | 206 |
| Total drug cost | $209,719 |
| Generic share | 69% of claims |
Education and affiliations
| Medical school | University of Texas Southwestern Medical School at Dallas |
|---|---|
| Graduation year | 2002 |
| Medicare specialty | Allergy/Immunology |
Medical group
- Iowa Physicians Clinic Medical FoundationDes Moines, IA · 1,246 clinicians
Hospital affiliation
- Finley HospitalDubuque, IA
Industry payments (Open Payments)
- 2025$47.33 · 2 payments from 2 companies
Top paying companies in 2025
| Company | Amount | Payments |
|---|---|---|
| Ionis Pharmaceuticals, Inc. | $25.00 | 1 |
| Abbvie Inc. | $22.33 | 1 |
What the 2025 payments were for
- Education$25.00 · 1 payment
- Food and Beverage$22.33 · 1 payment
Receiving payments does not imply wrongdoing. What Open Payments covers ·original records