Amy M. Brettmann, PA-C
NPI 1164824744ActiveIndividual· Physician Assistant· Overland Park, KS
Physician Assistant (PA-C) with Gastrointestinal Associates LLC, practicing in Overland Park, Kansas. Their prescriptions cost Medicare Part D more than their services did: $459,391 for 1,394 claims, against $9,288 paid for services in 2024. Abbvie Inc. was the largest of 22 companies reporting payments in 2025, $2,258 in all, mostly food and beverage. Lists Adventhealth Shawnee Mission as a hospital affiliation.
Overview
| NPI | 1164824744 |
|---|---|
| Status | Active |
| Entity type | Individual |
| Credential | PA-C |
| Sole proprietor | No |
| NPI issued | Sep 25, 2014 |
| Last updated in NPPES | Sep 18, 2025 |
| Certified by provider | Sep 18, 2025 |
Specialties and licenses
| Taxonomy | Code | License | State |
|---|---|---|---|
| Physician Assistant Primary | 363A00000X | 15-01726 | KS |
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 - Physician Assistant (KS) |
|---|---|
| Accepts assignment | Yes (participating) |
Medicare services in 2024
| Medicare patients | 165 |
|---|---|
| Services billed | 183 across 6 procedure codes |
| Paid by Medicare | $9,288 |
Part D prescriptions in 2024
| Prescriptions (claims) | 1,394 · 2,521 30-day fills |
|---|---|
| Patients | 358 |
| Total drug cost | $459,391 |
| Generic share | 85% of claims |
Education and affiliations
| Graduation year | 2014 |
|---|---|
| Medicare specialty | Physician Assistant |
Medical group
- Gastrointestinal Associates LLCKansas City, MO · 13 clinicians
Hospital affiliation
- Adventhealth Shawnee MissionShawnee Mission, KS
Industry payments (Open Payments)
- 2025$2,258 · 118 payments from 22 companies
- 2024$3,294 · 177 payments from 23 companies
Top paying companies in 2025
| Company | Amount | Payments |
|---|---|---|
| Abbvie Inc. | $303.44 | 25 |
| Takeda Pharmaceuticals U.S.A., Inc. | $225.64 | 12 |
| Janssen Biotech, Inc. | $206.37 | 10 |
| Pfizer Inc. | $184.95 | 11 |
| Ardelyx, Inc. | $160.81 | 8 |
What the 2025 payments were for
- Food and Beverage$2,258 · 118 payments
Receiving payments does not imply wrongdoing. What Open Payments covers ·original records
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