Amber Chanel Armstrong, AG ACNP-BC
NPI 1225527344ActiveIndividual· Nurse Practitioner, Gerontology· Austin, TX
Nurse Practitioner, Gerontology (AG ACNP-BC) with Austin Gastroenterology PLLC, practicing in Austin, Texas. Their prescriptions cost Medicare Part D more than their services did: $137,152 for 421 claims, against $9,780 paid for services in 2024. Madrigal Pharmaceuticals was the largest of 20 companies reporting payments in 2025, $7,271 in all, mostly food and beverage. Lists North Austin Medical Center as a hospital affiliation.
Overview
| NPI | 1225527344 |
|---|---|
| Status | Active |
| Entity type | Individual |
| Credential | AG ACNP-BC |
| Sole proprietor | No |
| NPI issued | May 3, 2018 |
| Last updated in NPPES | May 3, 2018 |
Specialties and licenses
| Taxonomy | Code | License | State |
|---|---|---|---|
| Nurse Practitioner, Gerontology Primary | 363LG0600X | AP136710 | TX |
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 - Nurse Practitioner (TX) |
|---|---|
| Accepts assignment | Yes (participating) |
Medicare services in 2024
| Medicare patients | 111 |
|---|---|
| Services billed | 149 across 7 procedure codes |
| Paid by Medicare | $9,780 |
Part D prescriptions in 2024
| Prescriptions (claims) | 421 · 630 30-day fills |
|---|---|
| Patients | 172 |
| Total drug cost | $137,152 |
| Generic share | 76% of claims |
Education and affiliations
| Graduation year | 2014 |
|---|---|
| Medicare specialty | Nurse Practitioner |
| Telehealth | Offers telehealth |
Medical group
- Austin Gastroenterology PLLCRound Rock, TX · 76 clinicians
Hospital affiliation
- North Austin Medical CenterAustin, TX
Industry payments (Open Payments)
- 2025$7,271 · 203 payments from 20 companies
- 2024$4,566 · 212 payments from 25 companies
Top paying companies in 2025
| Company | Amount | Payments |
|---|---|---|
| Madrigal Pharmaceuticals | $3,451 | 16 |
| Abbvie Inc. | $1,025 | 42 |
| Pfizer Inc. | $477.41 | 24 |
| Celltrion USA Inc. | $365.28 | 23 |
| Janssen Biotech, Inc. | $300.32 | 14 |
What the 2025 payments were for
- Food and Beverage$4,293 · 201 payments
- Consulting Fee$2,970 · 1 payment
- Travel and Lodging$8.18 · 1 payment
Receiving payments does not imply wrongdoing. What Open Payments covers ·original records
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