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Edit this profileAt a glance
- 10419 Slater Ave Apt 107, Fountain Valley, CA 92708
About Dr. Byun
Listed in the NPI registry as a specialist, Eun K. Byun, MD practices in Fountain Valley, CA. Medicare claims data shows Eun provided 4,887 services to 724 patients. The services billed most often include subsequent nursing facility care with moderate level of medical decision making, per day, if using time, at least 30 minutes, subsequent nursing facility care with straightforward level of medical decision making, per day, if using time, 20 minutes or more, and initial nursing facility care with high level of medical decision making, per day, if using time, 50 minutes or more. NPI 1861683047 identifies this record in the national registry.
Factual summary compiled by Guide.md from public records; not written by this provider.
Education & Training
Specialty
Credentials & Licensing
Medicare information
Exactly as CMS reports it (National Downloadable File, Opt-Out Affidavits, Order & Referring). Not an insurance directory; confirm coverage with the office.
Contact Information
- (646) 717-2533
- Email not available
Practice Locations
10419 SLATER AVE APT 107
Fountain Valley, CA 92708
Procedures Most Often Billed to Medicare
4,887 services · 724 patients · 4 distinct codes
| Procedure | Type | Code | Services | Compared with peers |
|---|---|---|---|---|
| Subsequent nursing facility care with moderate level of medical decision making, per day, if using time, at least 30 minutes | Office visit | 99309 |
2,794 | More than most peers in Specialist |
| Subsequent nursing facility care with straightforward level of medical decision making, per day, if using time, 20 minutes or more | Office visit | 99308 |
1,803 | More than most peers in Specialist |
| Initial nursing facility care with high level of medical decision making, per day, if using time, 50 minutes or more | Office visit | 99306 |
246 | More than most peers in Specialist |
| Initial nursing facility care with moderate level of medical decision making, per day, if using time, at least 35 minutes | Office visit | 99305 |
44 | As often as other peers in Specialist |
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.
Other specialists in Fountain Valley 8
Same specialty, same city.
Trained at Other 8
Other providers in the same specialty who trained at the same institution.
Class of 2000 at Other 8
Providers who graduated from the same medical school in the same year.
Common questions
What kind of doctor is Dr. Byun?
Dr. Byun is a specialist in Fountain Valley, CA. That is the designation recorded for this NPI in the federal registry.
NPI registry
What is Dr. Byun's address?
Dr. Byun is listed at 10419 Slater Ave Apt 107, Fountain Valley, CA 92708. Addresses come from the NPI registry and can lag a move, so confirm before travelling.
NPI registry
How can I make an appointment with Dr. Byun?
The number on file is (646) 717-2533. Contact the office directly to confirm availability and scheduling.
NPI registry
What is the NPI for Dr. Byun?
Dr. Byun's National Provider Identifier is 1861683047. 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 train?
Dr. Byun attended Other, graduating in 2000. This comes from the CMS National Downloadable File.
CMS public data
How much experience does Dr. Byun have?
Dr. Byun has 26 years experience. Calculated from a graduation year of 2000, reported in the CMS National Downloadable File.
CMS public data
What procedures does Dr. Byun perform?
According to Medicare billing data, Dr. Byun the Medicare record under this individual NPI shows mainly office visits and diagnostic testing. Hospital-based physicians usually have their procedural work billed by the facility rather than under their own number, so this is a floor on their practice, not a description of it. 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
Guide.md listings do not constitute medical advice or an endorsement.