NPPES file of Aug 9, 2026

James Sangho Yoon, M.D.

Family Medicine Physician · Brea, CA

James Sangho Yoon, M.D. is a family medicine physician with a practice address in Brea, California, and NPI 1083041503, issued on Sep 29, 2013. Check the license (California A67732, as entered in NPPES) on the Medical Board of California; the Medicare figures below come from public CMS files.

Record from CMS NPPES, file of Aug 9, 2026 · Medicare files 2024 · method · Verify with CMS →

NPPES recordNPPES file of Aug 9, 2026
1083041503
Name
James Sangho Yoon
Credential
M.D.
Primary taxonomy
Family Medicine Physician 207Q00000X
License number
A67732 CA
Self-reported in NPPES; status is on the state search
Practice location
955 W Imperial Hwy Ste 200, Brea, CA 92821
Phone
(714) 449-6900
Enumerated
Sep 29, 2013
Record last updated
Nov 11, 2021 (not updated in 5 years: call before relying on the address or phone)
Fax
(714) 449-6971
Medicare enrollment
Enrolled (PECOS I20141017000783); accepts Medicare assignment
Medical or professional school
New York Medical College, 1997
Telehealth
Offers telehealth (CMS)
Entity
Type 1 · individual
Public record from CMS NPPES (open it on the CMS NPI Registry). Enrollment, assignment, school and telehealth: CMS Doctors and Clinicians file, Aug 2026. A record is not a license: verify it with the state board.
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8 nearest family medicine physician records → All 17,133 in California → Look up another NPI →

Also registered at 955 W Imperial Hwy Ste 200

A shared address usually means a shared clinic or building; it does not show who employs whom.

  1. Brenda Aguilar, DNPNurse Practitioner1639875982
  2. Christine Choi, NPPediatric Nurse Practitioner1235635129
  3. Tiffany Dang, NPFamily Nurse Practitioner1376059253
  4. Alexandra Edelman, MDDermatology Physician1700240249
  5. Aeri Kang, M.D.Internal Medicine Physician1689660755
  6. Amina Larbah, MDPediatrics Physician1326667213

Verify James Sangho Yoon in five checks

  1. 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
  2. 2LicenseActive license and public ordersMedical Board of California
    Search for license A67732    Check the board
  3. 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
  4. 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
  5. 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
Open the California license search

PlainDoctor does not match the HHS-OIG exclusion list to individual records: most entries carry no NPI. Search the OIG exclusion list by name.

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2.4 times the Medicare Part D claims of the average family medicine physician in 2024

8,630 Medicare Part D claims for 750 beneficiaries, against an average of 3,544 among the 117,163 providers of this specialty who prescribed in Part D. Brand-name drugs were 9% of claims. 49 claims were for opioids.

  1. James Yoon8,630
  2. Specialty average3,544

Most prescribed

  1. Atorvastatin Calcium1,408 claims
  2. Losartan Potassium654 claims
  3. Amlodipine Besylate616 claims
  4. Levothyroxine Sodium332 claims
  5. Metformin Hcl328 claims
  6. Tamsulosin Hcl263 claims

Source: CMS Medicare Part D Prescribers by Provider and Drug, 2024 (data.cms.gov). Part D covers prescriptions for Medicare patients only; drugs with fewer than 11 claims are not published.

Industry payments in 2024: $137.88

6 payments; by number, the most common kind was food and beverage; the largest payer was Novo Nordisk Inc. The 55,478 providers of this specialty with any payment received $902.55 on average. Payments are reported by manufacturers, not by the provider, and are not a sign of wrongdoing.

  1. James Yoon$137.88
  2. Specialty average$902.55

Source: CMS Open Payments, program year 2024 (openpaymentsdata.cms.gov); average among providers of this specialty with at least one payment.

Bills Medicare through one group practice

  1. Providence Medical FoundationFullerton, CA

Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).

James Sangho Yoon among 17,133 family medicine physician records in California

James Sangho Yoon, M.D. is one of 17,133 family medicine physician records with a practice address in California. 81% of them appear in a Medicare file (Part D prescribing, MIPS, Open Payments or Medicare group billing); this one does. Its NPI, issued in 2013, is newer than 68% of them.

  • NPI issued2013 · 68% of these records are older, 29% newer
  • In a Medicare fileYes · 81% of these records are
  • In the CMS Doctors and Clinicians fileYes · 62% of these records are
  • Graduated1997 · median 2005 among the 10,652 with a school on file
  • Record last updated2021 · 58% of these records were not updated in five years or more

Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 207Q00000X and a California practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).

48 family medicine physician records list a practice address in Brea

They are 48 of the 1,052 NPPES records with a practice address in Brea, and 17,133 family medicine physician records in California.

All 17,133 in California → Every provider in Brea → Family Medicine Physician nationwide →

The 8 family medicine physician records with the nearest ZIP codes

  1. Alexandra Duke, D.OBrea, CA 928211760479992
  2. Anne Ford, MDBrea, CA 928211518967140
  3. Mark Giglio, MDBrea, CA 928211134129182
  4. Royce Hutain, M.D.Brea, CA 928211104894286
  5. Christian Lising, M.D.Brea, CA 928211760478606
  6. Marlene Mires, MDBrea, CA 928211235185976
  7. John Mitchell, M.D.Brea, CA 928211225024912
  8. Andrew Morrison, MDBrea, CA 928211750382628

Common questions

What is James Sangho Yoon, M.D.'s NPI number?

James Sangho Yoon, M.D.'s National Provider Identifier (NPI) is 1083041503, issued on Sep 29, 2013. An NPI identifies a provider in billing; it is not a license.

Where is James Sangho Yoon, M.D. located?

The NPPES record lists a practice address at 955 W Imperial Hwy Ste 200, Brea, CA, 92821. Phone: (714) 449-6900. Providers update this record themselves, so call before visiting.

How can I verify James Sangho Yoon, M.D.'s license?

NPPES lists California license number A67732, as entered by the provider. Search the Medical Board of California at https://www.mbc.ca.gov/License-Verification/default.aspx. The NPPES record confirms identity only; the state search shows license status, expiration and public orders.

How much does James Sangho Yoon, M.D. prescribe under Medicare Part D?

In 2024, James Sangho Yoon, M.D. had 8,630 Medicare Part D claims for 750 beneficiaries; the average among family medicine physician prescribers was 3,544. Part D covers Medicare prescriptions only.

Source: CMS National Plan and Provider Enumeration System (NPPES), file of Aug 9, 2026 (NPPES files on CMS.gov); NUCC Health Care Provider Taxonomy. Medicare files from data.cms.gov. An NPI identifies who bills; it is not a license.

Written with AI tools from the named public files; every figure is computed from those files (how it is made).

Figures on PlainDoctor are read from the federal files each page names (CMS NPPES, Medicare Part D, MIPS, Open Payments; the HHS-OIG exclusion list only as counts) and from Census population estimates, with the file date shown beside them. See our editorial standards & corrections policy, the methodology behind these numbers, or report a data error. Data current as of Aug 9, 2026.