Gregorius Resuma Penilla, M.D.
NPI 1023024973ActiveIndividual· Internal Medicine· Fenton, MO
Internal Medicine (M.D.) with Ssm Medical Group Inc, practicing in Fenton, Missouri. Medicare paid $68,868 for services to 196 patients in 2024, and Part D covered 6,857 of their prescriptions (89% generic). Amgen Inc. reported $121.17 in payments in 2025, mostly food and beverage. Lists Mercy Hospital St Louis and 4 other hospitals as a hospital affiliation.
Overview
| NPI | 1023024973 |
|---|---|
| Status | Active |
| Entity type | Individual |
| Credential | M.D. |
| Sole proprietor | Yes |
| NPI issued | Jul 31, 2006 |
| Last updated in NPPES | Oct 26, 2020 |
| Certified by provider | Oct 26, 2020 |
Specialties and licenses
| Taxonomy | Code | License | State |
|---|---|---|---|
| Internal Medicine Primary | 207R00000X | 36678 | 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 4, 2026 | No match | — |
| New York OMIG · Nov 4, 2026 | No match | — |
| Ohio Medicaid · Nov 4, 2026 | No match | — |
| Pennsylvania Medicheck · Nov 4, 2026 | No match | — |
| Washington HCA · Nov 4, 2026 | No match | — |
Official OIG search · How matching works ·Bulk check a roster
Medicare
| Enrollment (PECOS) | Enrolled Practitioner - Internal Medicine (MO) |
|---|---|
| Accepts assignment | Yes (participating) |
Medicare services in 2024
| Medicare patients | 196 |
|---|---|
| Services billed | 1,973 across 39 procedure codes |
| Paid by Medicare | $68,868 |
Part D prescriptions in 2024
| Prescriptions (claims) | 6,857 · 17,841 30-day fills |
|---|---|
| Patients | 510 |
| Total drug cost | $635,708 |
| Generic share | 89% of claims |
Education and affiliations
| Graduation year | 1981 |
|---|---|
| Medicare specialty | Internal Medicine |
| Telehealth | Offers telehealth |
Medical group
- Ssm Medical Group IncSaint Charles, MO · 568 clinicians
Hospital affiliations
- Mercy Hospital St LouisSaint Louis, MO
- Missouri Baptist Medical CenterSaint Louis, MO
- Ssm Health St Mary's Hospital - St LouisSaint Louis, MO
- Ssm St Clare Health CenterFenton, MO
- St Lukes HospitalChesterfield, MO
Other facilities
- Ssm Health Rehabilitation HospitalInpatient rehabilitation facility · Richmond Heights, MO
Industry payments (Open Payments)
- 2025$121.17 · 1 payment from 1 company
- 2024$6,253 · 12 payments from 2 companies
Top paying companies in 2025
| Company | Amount | Payments |
|---|---|---|
| Amgen Inc. | $121.17 | 1 |
What the 2025 payments were for
- Food and Beverage$121.17 · 1 payment
Receiving payments does not imply wrongdoing. What Open Payments covers ·original records
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