DR. DAVID JAIHUN BYUN (MD) – Radiation Oncology Physician, NPI 1619409802
Radiation Oncology Physician
Main info
Doctor Profile
Contacts
Profile Insights
NPPES metrics only — not quality of care.
503 RADIATION ONCOLOGY in NY
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Provider Addresses for DR. DAVID JAIHUN BYUN (MD)
181, East Houston Street, Lower East Side, Manhattan Community Board 3, Manhattan, New York County, New York, 10002, United States
4A
NEW YORK, NY 100021060
Phone: (408) 314-6094
Type: Mailing
80 SEYMOUR ST
HARTFORD, CT 061063315
Phone: (860) 545-2803
Type: Location
560 1ST AVE
NEW YORK, NY 100166402
Phone: (646) 501-8900
Type: Mailing
NPPES updates history
No NPPES updates recorded for this provider.
Prescription Activity
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Open Payments (CMS)
CMS reports 10 Open Payments records for all available years, with a total value of $2,920.
Total Amount is formed as General ($2,920) + Research ($0) + Ownership ($0) = $2,920.
Last reported payment date: 2024-11-15 • Largest payer in this snapshot: Elekta, Inc. ($2,870).
Total Amount
$2,920
General + Research + Ownership
Payments
10
Total payment records
General Amount
$2,920
General payments
Research Amount
$0
Research funding
Ownership Amount
$0
Ownership interests
Ownership Count
0
Ownership records
Last Payment Date
2024-11-15
Latest reported date
Top Companies
Largest payers in this snapshot
| Company | Amount |
|---|---|
| Elekta, Inc. | $2,870 |
| Elekta Pty Ltd | $50 |
Medicare Enrollment & Revalidation
Source: CMS public data · Not endorsed by CMS ·
Educational use only—not medical, billing, or legal advice.
PECOS enrollment status
Participating (accepts Medicare assignment)
Enrollment effective: 2025-03-17
PECOS data refreshed: 2026-05-27
Medicare revalidation (CMS due date list)
Due date not assigned yet
CMS is tracking this Medicare enrollment for revalidation, but has not published a due date.
Enrollment records
1
Earliest due date
Not assigned (TBD)
CMS data updated
2026-06-01
Revalidation progress
- Medicare enrolled
- On CMS revalidation list
- Due date assigned
- Revalidate in PECOS
CMS enrollment records
| Enrollment ID | Type | Specialty | State | Due date |
|---|---|---|---|---|
| I20250317003620 | I | Radiation Oncology | CT | TBD |
What to do next
- No action required while the due date shows TBD.
- Check the CMS Revalidation Lookup Tool periodically — CMS updates the list about every 60 days.
- Do not submit a revalidation application in PECOS until CMS publishes a concrete due date.
Prepare CMS-855 application → · Look up this NPI in PECOS → · Verify on CMS PECOS
Medicare Utilization (FFS)
Source: CMS public data · Not endorsed by CMS · Beneficiary counts under 11 are suppressed in source data ·
Educational use only—not medical, billing, or legal advice.
Top Medicare procedures (2023) · refreshed 2026-05-27
| HCPCS | Description | Services | Beneficiaries | Medicare allowed |
|---|---|---|---|---|
| 77014 | Ct guidance for insertion of radiation therapy fields | 304 | 44 | $0 |
| 77427 | Radiation treatment management, 5 treatment sessions | 68 | 35 | $0 |
| 77300 | Calculation of radiation therapy dose | 66 | 18 | $0 |
| 77334 | Design and construction of complex radiation treatment device | 42 | 19 | $0 |
| 77332 | Design and construction of simple radiation treatment device | 32 | 16 | $0 |
Insurance plans in this area (ZIP 10002)
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Group practice members
| Name | Specialty | State |
|---|---|---|
| Radiation Oncology | VT | |
| Radiation Oncology | CT | |
| - | CT | |
| Radiation Oncology | CT |
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