NPPES file of Aug 9, 2026

Alex Sejoon Cheoun

Family Nurse Practitioner · Los Angeles, CA

Alex Sejoon Cheoun is a family nurse practitioner with a practice address in Los Angeles, California, and NPI 1578320610, issued on Mar 5, 2024. Check the license (California 95028188, as entered in NPPES) with the California board that licenses this profession; 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
1578320610
Name
Alex Sejoon Cheoun
Primary taxonomy
Family Nurse Practitioner 363LF0000X
License number
95028188 CA
Self-reported in NPPES; status is on the state search
Practice location
1245 Wilshire Blvd Ste 580, Los Angeles, CA 90017
Phone
(213) 977-0419
Enumerated
Mar 5, 2024
Record last updated
Mar 21, 2025
Fax
(213) 977-0225
Medicare enrollment
Enrolled (PECOS I20241002001314); 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 1245 Wilshire Blvd Ste 580

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

  1. Edward Abdullah, M.D.Clinical Cardiac Electrophysiology Physician1740274547
  2. Steven Burstein, M.D.Interventional Cardiology Physician1386638153
  3. Christina Economides, M.D.Interventional Cardiology Physician1407065790
  4. Yong Ji, MDCardiovascular Disease Physician1487064119
  5. Jerry Kwong, MDClinical Cardiac Electrophysiology Physician1033538004
  6. Bruce Macrum, M.D.Cardiovascular Disease Physician1811981616

Verify Alex Sejoon Cheoun in five checks

  1. 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
  2. 2LicenseActive license and public ordersWhich California board licenses this profession
    Search for license 95028188
    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
Find 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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94% fewer Medicare Part D claims than the average family nurse practitioner in 2024

82 Medicare Part D claims for 42 beneficiaries, against an average of 1,305 among the 140,557 providers of this specialty who prescribed in Part D.

  1. Alex Cheoun82
  2. Specialty average1,305

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.

Bills Medicare through one group practice

  1. Pih Health PhysiciansLos Angeles, CA

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

Alex Sejoon Cheoun among 16,966 family nurse practitioner records in California

Alex Sejoon Cheoun is one of 16,966 family nurse practitioner records with a practice address in California. 67% of them appear in a Medicare file (Part D prescribing, MIPS, Open Payments or Medicare group billing); this one does. Its NPI, issued in 2024, is newer than 83% of them.

  • NPI issued2024 · 83% of these records are older, 10% newer
  • In a Medicare fileYes · 67% of these records are
  • In the CMS Doctors and Clinicians fileYes · 40% of these records are
  • Graduated2023 · median 2019 among the 6,793 with a school on file
  • Record last updated2025 · 42% of these records were not updated in five years or more

Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 363LF0000X and a California practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).

1,103 family nurse practitioner records list a practice address in Los Angeles

They are 1,103 of the 69,537 NPPES records with a practice address in Los Angeles, and 16,966 family nurse practitioner records in California.

The 8 family nurse practitioner records with the nearest ZIP codes

  1. Sophia Duran, NURSE PRACTITIONERLos Angeles, CA 900171487239786
  2. Kenneth EjioguLos Angeles, CA 900171639647019
  3. Irina Frangulyan, LAC, FNP-CLos Angeles, CA 900171780127118
  4. Chelsea HowellLos Angeles, CA 900171982100277
  5. Tanya Landrio, NPLos Angeles, CA 900171184146466
  6. Arianna Lanier, FNPLos Angeles, CA 900171669137089
  7. Mandy Littlefield, FNPLos Angeles, CA 900171619419819
  8. Joseph Mulevicz, N.P.Los Angeles, CA 900171467999862

Common questions

What is Alex Sejoon Cheoun's NPI number?

Alex Sejoon Cheoun's National Provider Identifier (NPI) is 1578320610, issued on Mar 5, 2024. An NPI identifies a provider in billing; it is not a license.

Where is Alex Sejoon Cheoun located?

The NPPES record lists a practice address at 1245 Wilshire Blvd Ste 580, Los Angeles, CA, 90017. Phone: (213) 977-0419. Providers update this record themselves, so call before visiting.

How can I verify Alex Sejoon Cheoun's license?

NPPES lists California license number 95028188, as entered by the provider. Search the California board that licenses this profession; the NPPES record confirms identity only.

How much does Alex Sejoon Cheoun prescribe under Medicare Part D?

In 2024, Alex Sejoon Cheoun had 82 Medicare Part D claims for 42 beneficiaries; the average among family nurse practitioner prescribers was 1,305. 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.

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.