David Jaihun Byun, MD
NPI 1619409802ActiveIndividual· Radiology, Radiation Oncology· Hartford, CT
Radiology, Radiation Oncology (MD) with Hartford Radiation Oncology Associates PC, practicing in Hartford, Connecticut. 122 Medicare patients in 2024, $60,629 paid; nearly all of their 163 Part D prescriptions were generic (96%). Philips North America LLC reported $1,860 in payments in 2025, mostly honoraria. Lists Hartford Hospital and 1 other hospital as hospital affiliations.
Overview
| NPI | 1619409802 |
|---|---|
| Status | Active |
| Entity type | Individual |
| Credential | MD |
| Sole proprietor | No |
| NPI issued | Mar 28, 2017 |
| Last updated in NPPES | Feb 25, 2025 |
| Certified by provider | Feb 25, 2025 |
Specialties and licenses
| Taxonomy | Code | License | State |
|---|---|---|---|
| Radiology, Radiation Oncology Primary | 2085R0001X | 80229 | CT |
| Radiology, Radiation Oncology | 2085R0001X | 314461 | NY |
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 - Radiation Oncology (CT) |
|---|---|
| Accepts assignment | Yes (participating) |
Medicare services in 2024
| Medicare patients | 122 |
|---|---|
| Services billed | 702 across 24 procedure codes |
| Paid by Medicare | $60,629 |
Part D prescriptions in 2024
| Prescriptions (claims) | 163 · 223 30-day fills |
|---|---|
| Patients | 51 |
| Total drug cost | $4,627 |
| Generic share | 96% of claims |
Education and affiliations
| Graduation year | 2017 |
|---|---|
| Medicare specialty | Radiation Oncology |
Medical group
- Hartford Radiation Oncology Associates PCFarmington, CT · 12 clinicians
Hospital affiliations
- Hartford HospitalHartford, CT
- Manchester Memorial HospitalManchester, CT
Industry payments (Open Payments)
- 2025$1,860 · 1 payment from 1 company
- 2024$2,775 · 9 payments from 2 companies
Top paying companies in 2025
| Company | Amount | Payments |
|---|---|---|
| Philips North America LLC | $1,860 | 1 |
What the 2025 payments were for
- Honoraria$1,860 · 1 payment
Receiving payments does not imply wrongdoing. What Open Payments covers ·original records
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