Janet M. Schwartzenberg, MD
NPI 1194767640ActiveIndividual· Internal Medicine, Rheumatology· Amarillo, TX
Internal Medicine, Rheumatology (MD) in Amarillo, Texas, trained at University of Texas Southwestern Medical School at Dallas (class of 1991). 1,081 Medicare patients in 2024, $2,848,036 paid; nearly all of their 12,954 Part D prescriptions were generic (92%). Amgen Inc. was the largest of 24 companies reporting payments in 2025, $4,055 in all, mostly food and beverage.
Overview
| NPI | 1194767640 |
|---|---|
| Status | Active |
| Entity type | Individual |
| Credential | MD |
| Sole proprietor | No |
| NPI issued | Jun 11, 2006 |
| Last updated in NPPES | Jul 13, 2026 |
Specialties and licenses
| Taxonomy | Code | License | State |
|---|---|---|---|
| Internal Medicine, Rheumatology Primary | 207RR0500X | J2135 | TX |
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 - Rheumatology (TX) |
|---|---|
| Accepts assignment | Yes (participating) |
Medicare services in 2024
| Medicare patients | 1,081 |
|---|---|
| Services billed | 279,353 across 155 procedure codes |
| Paid by Medicare | $2,848,036 |
Part D prescriptions in 2024
| Prescriptions (claims) | 12,954 · 19,526 30-day fills |
|---|---|
| Patients | 1,172 |
| Total drug cost | $4,019,569 |
| Generic share | 92% of claims |
Education and affiliations
| Medical school | University of Texas Southwestern Medical School at Dallas |
|---|---|
| Graduation year | 1991 |
| Medicare specialty | Rheumatology |
Medical group
- Amarillo Medical Specialists,llpAmarillo, TX · 42 clinicians
Hospital affiliations
- Bsa HospitalAmarillo, TX
- Hemphill County HospitalCanadian, TX
- Hereford Regional Medical CenterHereford, TX
- Memorial Hospital of Texas County AuthorityGuymon, OK
- Southwest Medical CenterLiberal, KS
Other facilities
- Bsa Compassion Home CareHome health agency · Amarillo, TX
Industry payments (Open Payments)
- 2025$4,055 · 212 payments from 24 companies
- 2024$5,080 · 198 payments from 21 companies
Top paying companies in 2025
| Company | Amount | Payments |
|---|---|---|
| Amgen Inc. | $541.27 | 32 |
| Abbvie Inc. | $462.35 | 22 |
| Ucb, Inc. | $434.30 | 20 |
| Glaxosmithkline, LLC. | $409.63 | 17 |
| Astrazeneca Pharmaceuticals LP | $328.08 | 34 |
What the 2025 payments were for
- Food and Beverage$3,937 · 209 payments
- Education$118.49 · 3 payments
Receiving payments does not imply wrongdoing. What Open Payments covers ·original records
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