Thomas A. Gionis, M.D.
NPI 1780638049ActiveIndividual· Emergency Medicine· Norwalk, CA
Emergency Medicine (M.D.) in Norwalk, California, trained at Medical University of South Carolina College of Medicine (class of 1975). Their prescriptions cost Medicare Part D more than their services did: $24,327 for 242 claims, against $7,809 paid for services in 2024.
Overview
| NPI | 1780638049 |
|---|---|
| Status | Active |
| Entity type | Individual |
| Credential | M.D. |
| Sole proprietor | No |
| NPI issued | May 20, 2006 |
| Last updated in NPPES | Nov 27, 2007 |
Specialties and licenses
| Taxonomy | Code | License | State |
|---|---|---|---|
| Emergency Medicine Primary | 207P00000X | C39248 | CA |
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 - Family Practice (CA); Practitioner - Family Practice (FL) |
|---|---|
| Accepts assignment | Yes (participating) |
Medicare services in 2024
| Medicare patients | 79 |
|---|---|
| Services billed | 108 across 12 procedure codes |
| Paid by Medicare | $7,809 |
Part D prescriptions in 2024
| Prescriptions (claims) | 242 · 257 30-day fills |
|---|---|
| Patients | 116 |
| Total drug cost | $24,327 |
| Generic share | 94% of claims |
Education and affiliations
| Medical school | Medical University of South Carolina College of Medicine |
|---|---|
| Graduation year | 1975 |
| Medicare specialty | Family Practice |
Medical group
- American Specialty Physicians Group IncColusa, CA · 100 clinicians
Hospital affiliation
- Coalinga Regional Medical CenterCoalinga, CA
Industry payments (Open Payments)
None reported for 2025 or 2024.
Receiving payments does not imply wrongdoing. What Open Payments covers ·original records
Other Emergency Medicine providers in Norwalk
- 1760648539
- 1912308446
- 1710939749
- 1942388947
- 1669426995
- 1689089195
- 1407972656
- 1801849450
- 1013961648
- 1487017497