James Yoon, M.D.
NPI 1083041503 · Family Medicine Physician · Brea, CA
Enrolled with Medicare as Practitioner - Family Practice · source: CMS PECOS Public Provider Enrollment (2026.04.01)
James Yoon, M.D. is a Family Medicine Physician provider in Brea, CA (NPI 1083041503).
Provider details
- NPI number
- 1083041503
- Entity type
- Individual
- Primary specialty
- Family Medicine PhysicianAllopathic & Osteopathic Physicians
- Credential
- M.D.
- Sex
- Male
- Sole proprietor
- No
- License
- A67732 (CA)
Specialties & taxonomies
Allopathic & Osteopathic Physicians
Profile Score
A profile completeness & documented-activity index — NOT a quality, outcomes, or patient-satisfaction rating.
- Registry tenure25% of score
12 yrs in NPPES registry
- Profile completeness25% of score
100% of core fields populated
- Practice footprint15% of score
6 documented practice locations
- Medicare service volume (vs. specialty peers)25% of score
712 Medicare services, 2024 (ranked within specialty)
- Open Payments transparency10% of score
Has Open Payments disclosures (2024)
Medicare volume is ranked against active providers in the same specialty. Signals a provider has no public data for (e.g. Medicare claims) are left out of the score entirely — never counted as zero — so providers without that data are not penalized. See the full formula and weights in our .
What this provider does (Medicare)
Based on Medicare fee-for-service claims, 2024; not all care is captured.
| Service (HCPCS) | Medicare services | Typical Medicare-allowed (2024) |
|---|---|---|
| Established Patient Office Or Other Outpatient Visit With Moderate Level of Decision Making, If Using Time, 30 Minutes Or More99214 | 213 | $139 |
| 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'SG2211 | 178 | $17 |
| Established Patient Office Or Other Outpatient Visit With Low Level OD Decision Making, If Using Time, 20 Minutes Or More99213 | 149 | $99 |
| Annual Wellness Visit, Includes a Personalized Prevention Plan of Service (pps), Subsequent VisitG0439 | 108 | $140 |
| Administration of Influenza Virus VaccineG0008 | 38 | $35 |
| X-Ray of Chest, 2 Views |
What this provider prescribes (Medicare Part D)
Top drugs by Medicare Part D claim volume, 2024 · 103 distinct drugs on file.
| Drug | Part D claims (2024) | Beneficiaries |
|---|---|---|
| Atorvastatin Calcium | 1,408 | 414 |
| Losartan Potassium | 654 | 183 |
| Amlodipine Besylate | 616 | 171 |
| Levothyroxine Sodium | 332 | 86 |
| Metformin Hcl | 328 | 98 |
| Tamsulosin Hcl | 263 | 79 |
| Rosuvastatin Calcium |
Transparency — industry payments
Based on CMS Open Payments, 2024; not all care is captured.
$138 across 6 records (Open Payments 2024)
Open Payments discloses payments and transfers of value (meals, travel, consulting, research, royalties) from drug and device makers to providers. This is a transparency signal, not a verdict — such payments are legal and common, and their presence is neither an endorsement nor a criticism. Source: CMS Open Payments, program year 2024.
Practice location
Mailing address
Additional practice locations (5)
- 6261 Stanton AveBuena Park, CA 90621-2436Phone: (714) 739-4325Fax: (714) 739-4076
- 2251 N Harbor BlvdFullerton, CA 92835-2601Phone: (714) 449-6230
- 2501 E Chapman Ave Ste 101Orange, CA 92869-3204Phone: (714) 628-3300
- 2212 E 4th St Ste 103Santa Ana, CA 92705-3871Phone: (714) 571-7700
- 4300 Rose DrYorba Linda, CA 92886-2026Phone: (714) 528-9911
Registry dates
- Enumerated
- 2013-09-29
- Last updated
- 2021-11-11
- Certified
- 2021-11-11
Frequently asked questions
- What is James Yoon's NPI number?
- James Yoon's National Provider Identifier (NPI) is 1083041503, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is James Yoon's specialty?
- James Yoon is listed in the NPPES registry with a primary specialty of Family Medicine Physician (Allopathic & Osteopathic Physicians).
- Where is James Yoon located?
- James Yoon's practice location on file with NPPES is 955 W Imperial Hwy Ste 200, Brea, CA 92821-3812.
- What is James Yoon's phone number?
- The practice phone number listed in the NPPES registry for James Yoon is (714) 449-6900.
- Does James Yoon accept Medicare?
- James Yoon is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is James Yoon's NPI active?
- Yes — James Yoon's NPI (1083041503) is active in the NPPES registry as of the last update on 2021-11-11.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.