George Ansstas, MD
NPI 1790988053ActiveIndividual· Internal Medicine, Medical Oncology· Saint Louis, MO
Internal Medicine, Medical Oncology (MD) with Washington University and 1 other group, practicing in Saint Louis, Missouri. Their prescriptions cost Medicare Part D more than their services did: $1,524,625 for 707 claims, against $816,655 paid for services in 2024. Regeneron Pharmaceuticals, Inc. was the largest of 2 companies reporting payments in 2025, $19,327 in all, mostly consulting fees. Lists Barnes Jewish Hospital and 4 other hospitals as hospital affiliations.
Overview
| NPI | 1790988053 |
|---|---|
| Status | Active |
| Entity type | Individual |
| Credential | MD |
| Sole proprietor | No |
| NPI issued | Jun 6, 2007 |
| Last updated in NPPES | Apr 15, 2025 |
Specialties and licenses
| Taxonomy | Code | License | State |
|---|---|---|---|
| Internal Medicine, Medical Oncology Primary | 207RX0202X | 2007026336 | MO |
| Internal Medicine | 207R00000X | 2007026336 | MO |
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 - Medical Oncology (IL); Practitioner - Medical Oncology (MO) |
|---|---|
| Accepts assignment | Yes (participating) |
Medicare services in 2024
| Medicare patients | 294 |
|---|---|
| Services billed | 31,714 across 95 procedure codes |
| Paid by Medicare | $816,655 |
Part D prescriptions in 2024
| Prescriptions (claims) | 707 · 970 30-day fills |
|---|---|
| Patients | 113 |
| Total drug cost | $1,524,625 |
| Generic share | 73% of claims |
Education and affiliations
| Graduation year | 2001 |
|---|---|
| Medicare specialty | Medical Oncology |
| Secondary specialties | Internal Medicine |
Medical groups
- Washington UniversitySaint Louis, MO · 3,029 clinicians
- Washington University Physicians in Illinois IncSaint Louis, MO · 175 clinicians
Hospital affiliations
- Barnes Jewish HospitalSaint Louis, MO
- Barnes-Jewish St Peters HospitalSaint Peters, MO
- Barnes-Jewish West County HospitalCreve Coeur, MO
- Memorial HospitalBelleville, IL
- Missouri Baptist Medical CenterSaint Louis, MO
Industry payments (Open Payments)
- 2025$19,327 · 23 payments from 2 companies
- 2024$11,581 · 11 payments from 5 companies
Top paying companies in 2025
| Company | Amount | Payments |
|---|---|---|
| Regeneron Pharmaceuticals, Inc. | $10,460 | 13 |
| Sun Pharmaceutical Industries Inc. | $8,866 | 10 |
What the 2025 payments were for
- Consulting Fee$15,560 · 4 payments
- Travel and Lodging$3,067 · 11 payments
- Food and Beverage$699.63 · 8 payments
Receiving payments does not imply wrongdoing. What Open Payments covers ·original records
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