NPPES file of Aug 9, 2026

Mark Yujin Choi, M.D.

Hospitalist Physician · Los Angeles, CA

Mark Yujin Choi, M.D. is a hospitalist physician with a practice address in Los Angeles, California, and NPI 1124287354, issued on Jun 3, 2008. Check the license (California A103588, 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
1124287354
Name
Mark Yujin Choi
Credential
M.D.
Primary taxonomy
Hospitalist Physician 208M00000X
License number
A103588 CA
Self-reported in NPPES; status is on the state search
Practice location
8700 Beverly Blvd, Los Angeles, CA 90048
Phone
(310) 423-5252
Enumerated
Jun 3, 2008
Record last updated
Apr 10, 2017 (not updated in 9 years: call before relying on the address or phone)
Fax
(310) 423-8441
Medicare enrollment
Enrolled (PECOS I20090731000174); accepts Medicare assignment
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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Also registered at 8700 Beverly Blvd

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

  1. Jason Aaronson, MDDiagnostic Radiology Physician1023145463
  2. Afshin Afrashteh, MDHospitalist Physician1346402989
  3. Christopher Allen, MDInterventional Cardiology Physician1437970068
  4. Maziar Amini, MDInternal Medicine Physician1669121596
  5. Mose Arditi, M.D.Pediatric Infectious Diseases Physician1154308062
  6. Shahrzad Arya, MDStudent in an Organized Health Care Education/Training Program1144080250

Verify Mark Yujin Choi in five checks

  1. 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
  2. 2LicenseActive license and public ordersMedical Board of California
    Search for license A103588
    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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86% fewer Medicare Part D claims than the average hospitalist physician in 2024

73 Medicare Part D claims for 27 beneficiaries, against an average of 521 among the 21,613 providers of this specialty who prescribed in Part D.

  1. Mark Choi73
  2. Specialty average521

Most prescribed

  1. Atorvastatin Calcium12 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.

The practice group's MIPS final score for 2023 (Medicare payment program): 85.7 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 score85.7
  2. Costout of 100 · 30%61.5
  3. Promoting interoperabilityout of 100 · 25%100.0
  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).

Bills Medicare through one group practice

  1. Cedars-Sinai Medical Care FoundationLos Angeles, CA

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

Mark Yujin Choi among 3,099 hospitalist physician records in California

Mark Yujin Choi, M.D. is one of 3,099 hospitalist physician records with a practice address in California. 90% of them appear in a Medicare file (Part D prescribing, MIPS, Open Payments or Medicare group billing); this one does. Its NPI, issued in 2008, is newer than 34% of them.

  • NPI issued2008 · 34% of these records are older, 61% newer
  • In a Medicare fileYes · 90% of these records are
  • In the CMS Doctors and Clinicians fileYes · 81% of these records are
  • Graduated2006 · median 2010 among the 2,505 with a school on file
  • Record last updated2017 · 49% of these records were not updated in five years or more

Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 208M00000X and a California practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).

Hospitalist Physician providers in California

There are 3,099 hospitalist physician records in California.

The 8 hospitalist physician records with the nearest ZIP codes

  1. Afshin Afrashteh, MDLos Angeles, CA 900481346402989
  2. Shahida Farooqi, M.D.West Hollywood, CA 900481568622520
  3. Prabhu Gounder, M.D.West Hollywood, CA 900481508963893
  4. Gary Gutkin, M.D.West Hollywood, CA 900481366636573
  5. Denise JungWest Hollywood, CA 900481013179399
  6. Lowell Korman, M.D.West Hollywood, CA 900481912113309
  7. Jae Lee, M.D.Los Angeles, CA 900481073614079
  8. Shaun Miller, MDWest Hollywood, CA 900481447419163

Common questions

What is Mark Yujin Choi, M.D.'s NPI number?

Mark Yujin Choi, M.D.'s National Provider Identifier (NPI) is 1124287354, issued on Jun 3, 2008. An NPI identifies a provider in billing; it is not a license.

Where is Mark Yujin Choi, M.D. located?

The NPPES record lists a practice address at 8700 Beverly Blvd, Los Angeles, CA, 90048. Phone: (310) 423-5252. Providers update this record themselves, so call before visiting.

How can I verify Mark Yujin Choi, M.D.'s license?

NPPES lists California license number A103588, 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 Mark Yujin Choi, M.D. prescribe under Medicare Part D?

In 2024, Mark Yujin Choi, M.D. had 73 Medicare Part D claims for 27 beneficiaries; the average among hospitalist physician prescribers was 521. Part D covers Medicare prescriptions only.

What is Mark Yujin Choi, M.D.'s MIPS final score?

The 2023 MIPS final score is 85.7 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.