John Thomas Chon Sr., D.O.
NPI 1184691644ActiveIndividual· Emergency Medicine· Covina, CA
Emergency Medicine (D.O.) in Covina, California, trained at At Still University of Health Sciences, College of Osteo Med, Kirksville (class of 2002). 306 Medicare patients in 2024, $51,811 paid; nearly all of their 642 Part D prescriptions were generic (94%). Gilead Sciences, Inc. was the largest of 2 companies reporting payments in 2025, $58.20 in all, mostly food and beverage.
Overview
| NPI | 1184691644 |
|---|---|
| Status | Active |
| Entity type | Individual |
| Credential | D.O. |
| Sole proprietor | No |
| NPI issued | Mar 3, 2006 |
| Last updated in NPPES | Oct 25, 2024 |
| Certified by provider | May 14, 2023 |
Specialties and licenses
| Taxonomy | Code | License | State |
|---|---|---|---|
| Emergency Medicine Primary | 207P00000X | 20A9192 | CA |
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 - Emergency Medicine (CA) |
|---|---|
| Accepts assignment | Yes (participating) |
Medicare services in 2024
| Medicare patients | 306 |
|---|---|
| Services billed | 605 across 22 procedure codes |
| Paid by Medicare | $51,811 |
Part D prescriptions in 2024
| Prescriptions (claims) | 642 · 688 30-day fills |
|---|---|
| Patients | 363 |
| Total drug cost | $6,931 |
| Generic share | 94% of claims |
Education and affiliations
| Medical school | At Still University of Health Sciences, College of Osteo Med, Kirksville |
|---|---|
| Graduation year | 2002 |
| Medicare specialty | Emergency Medicine |
Medical groups
- Southern California Permanente Medical GroupRedlands, CA · 11,293 clinicians
- Gem Medical Group CorporationSouth El Monte, CA · 57 clinicians
Hospital affiliations
- Greater El Monte Community HospitalSouth El Monte, CA
- Monterey Park HospitalMonterey Park, CA
Industry payments (Open Payments)
- 2025$58.20 · 2 payments from 2 companies
- 2024$684.37 · 20 payments from 4 companies
Top paying companies in 2025
| Company | Amount | Payments |
|---|---|---|
| Gilead Sciences, Inc. | $29.88 | 1 |
| Abbvie Inc. | $28.32 | 1 |
What the 2025 payments were for
- Food and Beverage$58.20 · 2 payments
Receiving payments does not imply wrongdoing. What Open Payments covers ·original records
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