Jajin Thomas Chon, M.D.
NPI 1346320553ActiveIndividual· Internal Medicine, Endocrinology, Diabetes & Metabolism· Morristown, NJ
Internal Medicine, Endocrinology, Diabetes & Metabolism (M.D.) in Morristown, New Jersey, trained at State University of New York at Stony Brook, School of Medicine (class of 1997). Their prescriptions cost Medicare Part D more than their services did: $642,783 for 2,054 claims, against $54,713 paid for services in 2024. Amgen Inc. was the largest of 24 companies reporting payments in 2025, $1,458 in all, mostly food and beverage.
Overview
| NPI | 1346320553 |
|---|---|
| Status | Active |
| Entity type | Individual |
| Credential | M.D. |
| Sole proprietor | No |
| NPI issued | Oct 16, 2006 |
| Last updated in NPPES | Dec 5, 2018 |
Specialties and licenses
| Taxonomy | Code | License | State |
|---|---|---|---|
| Internal Medicine, Endocrinology, Diabetes & Metabolism Primary | 207RE0101X | 25MA07379600 | NJ |
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 - Endocrinology (NJ) |
|---|---|
| Accepts assignment | Yes (participating) |
Medicare services in 2024
| Medicare patients | 188 |
|---|---|
| Services billed | 791 across 9 procedure codes |
| Paid by Medicare | $54,713 |
Part D prescriptions in 2024
| Prescriptions (claims) | 2,054 · 4,738 30-day fills |
|---|---|
| Patients | 274 |
| Total drug cost | $642,783 |
| Generic share | 51% of claims |
Education and affiliations
| Medical school | State University of New York at Stony Brook, School of Medicine |
|---|---|
| Graduation year | 1997 |
| Medicare specialty | Endocrinology |
| Telehealth | Offers telehealth |
Medical group
- Medical Associates of Englewood PCEnglewood, NJ · 540 clinicians
Hospital affiliations
- Chilton Medical CenterPompton Plains, NJ
- Englewood Hospital and Medical CenterEnglewood, NJ
- Morristown Medical CenterMorristown, NJ
Industry payments (Open Payments)
- 2025$1,458 · 68 payments from 24 companies
- 2024$922.33 · 44 payments from 16 companies
Top paying companies in 2025
| Company | Amount | Payments |
|---|---|---|
| Amgen Inc. | $365.99 | 10 |
| Corcept Therapeutics | $184.88 | 11 |
| Novo Nordisk Inc | $117.01 | 6 |
| Ucb, Inc. | $76.29 | 4 |
| Medtronic, Inc. | $70.84 | 2 |
What the 2025 payments were for
- Food and Beverage$1,434 · 67 payments
- Education$24.04 · 1 payment
Receiving payments does not imply wrongdoing. What Open Payments covers ·original records
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