Physician Profile
Unclaimed ProfileAbout YOON
James Sangho Yoon, M.D. is a healthcare provider in Brea, CA specializing in family practice. James trained at New York Medical College, graduating in 1997. James is also listed as specializing in family medicine. Medicare claims data shows James provided 743 services to 554 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
- (714) 449-6900
- Email not available
Practice Locations
955 W IMPERIAL HWY STE 200
Brea, CA 92821
Procedures Most Often Billed to Medicare
743 services · 554 patients · 8 distinct codes
| Procedure | Type | Code | Services |
|---|---|---|---|
| X-ray of chest, 2 views | Imaging | 71046 |
13 |
| Influenza vaccine, inactivated | Treatment | 90653 |
31 |
| Established patient office or other outpatient visit with moderate level of decision making, if using time, 30 minutes or more | Office visit | 99214 |
213 |
| 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 |
178 |
| Established patient office or other outpatient visit with low level od decision making, if using time, 20 minutes or more | Office visit | 99213 |
149 |
| Annual wellness visit, includes a personalized prevention plan of service (pps), subsequent visit | Billing code | G0439 |
108 |
| Administration of influenza virus vaccine | Billing code | G0008 |
38 |
| Established patient office or other outpatient visit with high level of medical decision making, if using time, 40 minutes or more | Office visit | 99215 |
13 |
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 family practices at this location 8
Same specialty, same street address — most likely the same department or group.
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 family practices in Brea 5
Same specialty, same city.
More connections — 23 related providers in 3 groups
Trained at New York Medical College 8
Other providers in the same specialty who trained at the same institution.
Class of 1997 at New York Medical College 8
Providers who graduated from the same medical school in the same year.
Also performs X-ray of chest, 2 views 7
Providers in CA who bill this service to Medicare most often.
Common questions
What does Dr. Yoon specialize in?
Dr. Yoon is a family practice in Brea, CA. This is the primary taxonomy recorded against the NPI in the federal registry, listed there as “FAMILY PRACTICE”.
NPI registry
Where is Dr. Yoon located?
Dr. Yoon is listed at 955 W IMPERIAL HWY STE 200, Brea, CA 92821. Addresses come from the NPI registry and can lag a move, so confirm before travelling.
NPI registry
What is Dr. Yoon's phone number?
The number on file is (714) 449-6900. Guide.md cannot book appointments or pass on messages — please call the office directly.
NPI registry
What is the NPI for Dr. Yoon?
Dr. Yoon's National Provider Identifier is 1083041503. 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. Yoon go to medical school?
Dr. Yoon attended New York Medical College, graduating in 1997. This comes from the CMS National Downloadable File.
CMS public data
How much experience does Dr. Yoon have?
Dr. Yoon has 29 years experience. Calculated from a graduation year of 1997, reported in the CMS National Downloadable File.
CMS public data
What does Dr. Yoon do most often?
According to Medicare billing data, Dr. Yoon performs imaging including x-ray of chest, 2 views; provides treatments such as influenza vaccine, inactivated, alongside routine visits and testing. This reflects Medicare patients only and is billing volume, not a measure of quality.
Medicare claims
Is Dr. Yoon's profile verified?
Not yet. This profile is built from public federal data and has not been confirmed by Dr. Yoon. If this is you, claiming it is free.
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Claim this profileProvider data sourced from the NPPES NPI Registry and CMS public datasets. Information is provided for reference and is not medical advice.