NPPES file of Aug 9, 2026

Jiseung Yoon, MD

Addiction Medicine (Preventive Medicine) Physician · Corona, CA

Jiseung Yoon, MD is an addiction medicine (preventive medicine) physician with a practice address in Corona, California, and NPI 1144742420, issued on Jul 8, 2017. Check the license (California A158220, 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 2023 and 2024 · method · Verify with CMS →

NPPES recordNPPES file of Aug 9, 2026
1144742420
Name
Jiseung Yoon
Credential
MD
Primary taxonomy
Addiction Medicine (Preventive Medicine) Physician 2083A0300X
License numbers
A158220 CA
75968 TN
Self-reported in NPPES; status is on the state search
Practice location
222 W 6TH St, Corona, CA 92882
Phone
(909) 485-7974
Enumerated
Jul 8, 2017
Record last updated
May 5, 2026
Entity
Type 1 · individual
Public record from CMS NPPES (open it on the CMS NPI Registry). A record is not a license: verify it with the state board.
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Also registered at 222 W 6TH St

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

  1. Joanna CoronaMedical Physician Assistant1710492814
  2. Carolina Gomez, LVNLicensed Vocational Nurse1447074620
  3. Stephanie HuffLicensed Vocational Nurse1619814357
  4. Shaun KelleyLicensed Vocational Nurse1114816428
  5. Channing LackeyAddiction (Substance Use Disorder) Counselor1104384635
  6. Daniel LeanosCounselor1396550828

Verify Jiseung 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 A158220
    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

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88% fewer Medicare Part D claims than the average addiction medicine (preventive medicine) physician in 2024

49 Medicare Part D claims for 11 beneficiaries, against an average of 420 among the 224 providers of this specialty who prescribed in Part D.

  1. Jiseung Yoon49
  2. Specialty average420

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.

The practice group's MIPS final score for 2023 (Medicare payment program): 85.2 of 100

The Merit-based Incentive Payment System score is reported for the practice group, not for one clinician alone. Four categories are weighted into the final score; the average among 454,083 clinicians with a measured score was 83.5.

  1. Qualityout of 100 · 30% of the final score71.8
  2. Costout of 100 · 30%64.5
  3. Promoting interoperabilityout of 100 · 25%82.0
  4. Improvement activities40 of 40 points · 15%100.0

Source: CMS Quality Payment Program, MIPS performance year 2023, group reporting; category weights for 2023 (qpp.cms.gov).

Industry payments in 2024: $151.79

7 payments; by number, the most common kind was food and beverage; the largest payer was Treace Medical Concepts, Inc. The 112 providers of this specialty with any payment received $596.46 on average. Payments are reported by manufacturers, not by the provider, and are not a sign of wrongdoing.

  1. Jiseung Yoon$151.79
  2. Specialty average$596.46

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

Jiseung Yoon among 50 addiction medicine (preventive medicine) physician records in California

Jiseung Yoon, MD is one of 50 addiction medicine (preventive medicine) physician records with a practice address in California. 78% of them appear in a Medicare file (Part D prescribing, MIPS, Open Payments or Medicare group billing); this one does. Its NPI, issued in 2017, is newer than 72% of them.

  • NPI issued2017 · 72% of these records are older, 22% newer
  • In a Medicare fileYes · 78% of these records are
  • In the CMS Doctors and Clinicians fileNo · 48% of these records are
  • Record last updated2026 · 12% of these records were not updated in five years or more

Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 2083A0300X and a California practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).

Addiction Medicine (Preventive Medicine) Physician providers in California

There are 50 addiction medicine (preventive medicine) physician records in California.

The 8 addiction medicine (preventive medicine) physician records with the nearest ZIP codes

  1. Veronica Valdivia, CCMA-COxnard, CA 930361912562778
  2. James Pierre, MD, MPHSimi Valley, CA 930631003194309
  3. Mario San Bartolome, MDWestminster, CA 926831154420024
  4. Evaggelos Mitrevolis, MDAliso Viejo, CA 926561154632990
  5. Cabrina BlaylockNuevo, CA 925671376389858
  6. Steven Ruh, M.D.Riverside, CA 925011902929193
  7. Michael Valdez, M.D.Riverside, CA 925011205923224
  8. Kunal Doshi, MDSan Bernardino, CA 924151114594777

Common questions

What is Jiseung Yoon, MD's NPI number?

Jiseung Yoon, MD's National Provider Identifier (NPI) is 1144742420, issued on Jul 8, 2017. An NPI identifies a provider in billing; it is not a license.

Where is Jiseung Yoon, MD located?

The NPPES record lists a practice address at 222 W 6TH St, Corona, CA, 92882. Phone: (909) 485-7974. Providers update this record themselves, so call before visiting.

How can I verify Jiseung Yoon, MD's license?

NPPES lists California license number A158220, 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 Jiseung Yoon, MD prescribe under Medicare Part D?

In 2024, Jiseung Yoon, MD had 49 Medicare Part D claims for 11 beneficiaries; the average among addiction medicine (preventive medicine) physician prescribers was 420. Part D covers Medicare prescriptions only.

What is Jiseung Yoon, MD's MIPS final score?

The 2023 MIPS final score is 85.2 of 100, reported for the practice group. The average among 454,083 clinicians with a measured score was 83.5.

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.

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.