Physician Profile
Unclaimed ProfileAbout BYUN
John K Byun, MD is a healthcare provider in Stony Brook, NY specializing in radiation oncology. Medicare claims data shows John provided 776 services to 289 patients.
Summarised automatically from public NPI registry and CMS Medicare data. Not written or reviewed by this provider. Claim this profile to replace it.
Education & Training
Areas of Expertise
Licensing & Certification
Source: NPPES NPI Registry
Contact Information
- (631) 444-2325
- Email not available
Practice Locations
101 NICOLLS RD
Stony Brook, NY 11794
Procedures Most Often Billed to Medicare
776 services · 289 patients · 12 distinct codes
| Procedure | Type | Code | Services |
|---|---|---|---|
| Calculation of radiation therapy dose | Imaging | 77300 |
312 |
| Ct guidance for insertion of radiation therapy fields | Imaging | 77014 |
179 |
| Design and construction of complex radiation treatment device | Imaging | 77334 |
79 |
| Obtaining data needed to develop the optimal radiation treatment, 3 or more treatment areas or any number of treatment areas where special treatment is involved | Imaging | 77290 |
21 |
| 3d radiation therapy planning | Imaging | 77295 |
20 |
| Complex radiation therapy planning | Imaging | 77263 |
20 |
| Ct guidance for insertion of radiation therapy fields | Imaging | 77014 |
18 |
| Management of cranial lesion surgery using radiation over multiple sessions | Imaging | 77435 |
11 |
| Stereoscopic x-ray guidance for localization of target volume for the delivery of radiation therapy | Billing code | G6002 |
54 |
| Visit complexity inherent to evaluation and management associated with medical care services that serve as the continuing focal point for all needed health care services and/or with medical care services that are part of ongoing care related to a patient' | Billing code | G2211 |
27 |
Source: CMS Medicare public data. Shows how often procedures were billed — not quality of care or patient satisfaction.
Related providers
Connections drawn from the registry and from what providers have told us. A link here is not a referral or an endorsement.
Related specialists at this location 1
Clinically related specialties at the same address — the people this provider most likely works alongside.
Also at this address 4
Providers at the same street address. Each files their own registry entry, so a shared practice often appears under several different names.
Other radiation oncology specialists in Stony Brook 8
Same specialty, same city.
More connections — 24 related providers in 3 groups
Trained at Other 8
Other providers in the same specialty who trained at the same institution.
Class of 2014 at Other 8
Providers who graduated from the same medical school in the same year.
Also performs Calculation of radiation therapy dose 8
Providers in NY who bill this service to Medicare most often.
Common questions
What does Dr. Byun specialize in?
Dr. Byun is a radiation oncology in Stony Brook, NY. This is the primary taxonomy recorded against the NPI in the federal registry, listed there as “RADIATION ONCOLOGY”.
NPI registry
Where is Dr. Byun located?
Dr. Byun is listed at 101 NICOLLS RD, Stony Brook, NY 11794. Addresses come from the NPI registry and can lag a move, so confirm before travelling.
NPI registry
What is Dr. Byun's phone number?
The number on file is (631) 444-2325. Guide.md cannot book appointments or pass on messages — please call the office directly.
NPI registry
What is the NPI for Dr. Byun?
Dr. Byun's National Provider Identifier is 1528487089. It is issued by the Centers for Medicare & Medicaid Services and is unique and permanent — it does not change if they move practice.
NPI registry
Where did Dr. Byun go to medical school?
Dr. Byun attended Other, graduating in 2014. This comes from the CMS National Downloadable File.
CMS public data
How much experience does Dr. Byun have?
Dr. Byun has 12 years experience. Calculated from a graduation year of 2014, reported in the CMS National Downloadable File.
CMS public data
What does Dr. Byun do most often?
According to Medicare billing data, Dr. Byun performs imaging including calculation of radiation therapy dose and ct guidance for insertion of radiation therapy fields, alongside routine visits and testing. This reflects Medicare patients only and is billing volume, not a measure of quality.
Medicare claims
Is Dr. Byun's profile verified?
Not yet. This profile is built from public federal data and has not been confirmed by Dr. Byun. If this is you, claiming it is free.
Guide.md
Is this your profile?
Verify your identity to control how patients — and AI assistants — describe you.
Claim this profileProvider data sourced from the NPPES NPI Registry and CMS public datasets. Information is provided for reference and is not medical advice.