NPPES file of Aug 9, 2026

Chang Sup Lee, MD

Ophthalmology Physician · Los Angeles, CA

Chang Sup Lee, MD is an ophthalmology physician with a practice address in Los Angeles, California, and NPI 1598296238, issued on Mar 24, 2017. Check the license (California A172874, 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
1598296238
Name
Chang Sup Lee
Credential
MD
Primary taxonomy
Ophthalmology Physician 207W00000X
License number
A172874 CA
Self-reported in NPPES; status is on the state search
Practice location
520 S Virgil Ave Ste 103, Los Angeles, CA 90020
Phone
(404) 783-3508
Enumerated
Mar 24, 2017
Record last updated
Apr 30, 2026
Fax
(213) 297-7978
Medicare enrollment
Enrolled (PECOS I20210713003422); 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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Verify Chang Sup Lee in five checks

  1. 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
  2. 2LicenseActive license and public ordersMedical Board of California
    Search for license A172874
    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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81% fewer Medicare Part D claims than the average ophthalmology physician in 2024

291 Medicare Part D claims for 90 beneficiaries, against an average of 1,518 among the 16,459 providers of this specialty who prescribed in Part D. Brand-name drugs were 31% of claims.

  1. Chang Sup Lee291
  2. Specialty average1,518

Most prescribed

  1. Prednisolone Acetate83 claims
  2. Ofloxacin41 claims
  3. Brimonidine Tartrate25 claims
  4. Ketorolac Tromethamine21 claims
  5. Dorzolamide-Timolol19 claims
  6. Timolol Maleate16 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: $1,045.68

25 payments; by number, the most common kind was food and beverage; the largest payer was Apellis Pharmaceuticals, Inc. The 13,221 providers of this specialty with any payment received $4,535.02 on average. Payments are reported by manufacturers, not by the provider, and are not a sign of wrongdoing.

  1. Chang Sup Lee$1,045.68
  2. Specialty average$4,535.02

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

Bills Medicare through 3 group practices

  1. Pacific Eye Institute A Medical Group IncUpland, CA
  2. Paul J Dougherty M D IncWestlake Village, CA
  3. Retina Vitreous Associates Medical GroupLos Angeles, CA

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

Chang Sup Lee among 2,899 ophthalmology physician records in California

Chang Sup Lee, MD is one of 2,899 ophthalmology physician records with a practice address in California. 79% 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 88% of them.

  • NPI issued2017 · 88% of these records are older, 10% newer
  • In a Medicare fileYes · 79% of these records are
  • In the CMS Doctors and Clinicians fileYes · 66% of these records are
  • Graduated2017 · median 2001 among the 1,907 with a school on file
  • Record last updated2026 · 67% of these records were not updated in five years or more

Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 207W00000X and a California practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).

Ophthalmology Physician providers in California

There are 2,899 ophthalmology physician records in California.

The 8 ophthalmology physician records with the nearest ZIP codes

  1. Samantha Chai, MDLos Angeles, CA 900201518129980
  2. Andrew Cho, M.D.Los Angeles, CA 900201225072481
  3. Stanley Kim, M.D.Los Angeles, CA 900201003837840
  4. Sok Nam, M.D.Los Angeles, CA 900201538265632
  5. Scott BowmanLos Angeles, CA 900221952806671
  6. William Sierra, M.D.Los Angeles, CA 900221275552796
  7. Paul Urrea, M.D.Los Angeles, CA 900221235157363
  8. David Boyer, MDLos Angeles, CA 900171295736916

Common questions

What is Chang Sup Lee, MD's NPI number?

Chang Sup Lee, MD's National Provider Identifier (NPI) is 1598296238, issued on Mar 24, 2017. An NPI identifies a provider in billing; it is not a license.

Where is Chang Sup Lee, MD located?

The NPPES record lists a practice address at 520 S Virgil Ave Ste 103, Los Angeles, CA, 90020. Phone: (404) 783-3508. Providers update this record themselves, so call before visiting.

How can I verify Chang Sup Lee, MD's license?

NPPES lists California license number A172874, 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 Chang Sup Lee, MD prescribe under Medicare Part D?

In 2024, Chang Sup Lee, MD had 291 Medicare Part D claims for 90 beneficiaries; the average among ophthalmology physician prescribers was 1,518. 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.