Ivan Jisoo Lee, MD
Ophthalmology Physician · Fullerton, CA
Ivan Jisoo Lee, MD is an ophthalmology physician with a practice address in Fullerton, California, and NPI 1942769831, issued on Mar 19, 2019. Check the license (California A200827, as entered in NPPES) on the Medical Board of California; the Medicare figures below come from public CMS files.
- Name
- Ivan Jisoo Lee
- Credential
- MD
- Primary taxonomy
- Ophthalmology Physician 207W00000X
- License numbers
- A200827 CA
35.147835 OH
Self-reported in NPPES; status is on the state search - Practice location
- 301 W Bastanchury RD Ste 285, Fullerton, CA 92835
- Phone
- (714) 738-4620
- Enumerated
- Mar 19, 2019
- Record last updated
- Dec 2, 2025
- Medicare enrollment
- Enrolled (PECOS I20250627003732); accepts Medicare assignment
- Medical or professional school
- Oakland Univ, William Beaumont School Of Medicine, 2019
- Entity
- Type 1 · individual
8 nearest ophthalmology physician records → All 2,899 in California → Look up another NPI →
Also registered at 301 W Bastanchury RD Ste 285
A shared address usually means a shared clinic or building; it does not show who employs whom.
- Ash Pirouz, MDRetina Specialist (Ophthalmology) Physician1942489356
- Hema Ramkumar, M.D.Retina Specialist (Ophthalmology) Physician1184919524
Verify Ivan Jisoo Lee in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersMedical Board of California
Search for license A200827Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
67% fewer Medicare Part D claims than the average ophthalmology physician in 2024
507 Medicare Part D claims for 206 beneficiaries, against an average of 1,518 among the 16,459 providers of this specialty who prescribed in Part D. Brand-name drugs were 32% of claims.
Most prescribed
- Prednisolone Acetate122 claims
- Ofloxacin94 claims
- Dorzolamide-Timolol44 claims
- Atropine Sulfate40 claims
- Latanoprost37 claims
- Timolol Maleate32 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 MIPS final score for 2023 (Medicare payment program): 95.3 of 100
The Merit-based Incentive Payment System score is reported for this clinician. Four categories are weighted into the final score; the average among 454,083 clinicians with a measured score was 83.5.
Source: CMS Quality Payment Program, MIPS performance year 2023; category weights for 2023 (qpp.cms.gov).
Bills Medicare through one group practice
- Retina Consultants OF Orange County, A Medical CorporationWhittier, CA
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
Ivan Jisoo Lee among 2,899 ophthalmology physician records in California
Ivan Jisoo 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 2019, is newer than 92% of them.
- NPI issued2019 · 92% of these records are older, 6% newer
- In a Medicare fileYes · 79% of these records are
- In the CMS Doctors and Clinicians fileYes · 66% of these records are
- Graduated2019 · median 2001 among the 1,907 with a school on file
- Record last updated2025 · 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.
All 2,899 in California → Every provider in Fullerton → Ophthalmology Physician nationwide →
The 8 ophthalmology physician records with the nearest ZIP codes
- J Berbos, M.D.Fullerton, CA 928351467596114
- Matthew Kim, M.D.Fullerton, CA 928351770514465
- Omar Krad, M.D.Fullerton, CA 928351669635132
- Dagny Luong, MDFullerton, CA 928351790044626
- William Mosier, MDFullerton, CA 928351063553378
- Matthew NobeFullerton, CA 928351821313461
- William Peloquin, M.D.Fullerton, CA 928351932261336
- Leslie Pham, MDFullerton, CA 928351568500411
Common questions
What is Ivan Jisoo Lee, MD's NPI number?
Ivan Jisoo Lee, MD's National Provider Identifier (NPI) is 1942769831, issued on Mar 19, 2019. An NPI identifies a provider in billing; it is not a license.
Where is Ivan Jisoo Lee, MD located?
The NPPES record lists a practice address at 301 W Bastanchury RD Ste 285, Fullerton, CA, 92835. Phone: (714) 738-4620. Providers update this record themselves, so call before visiting.
How can I verify Ivan Jisoo Lee, MD's license?
NPPES lists California license number A200827, 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 Ivan Jisoo Lee, MD prescribe under Medicare Part D?
In 2024, Ivan Jisoo Lee, MD had 507 Medicare Part D claims for 206 beneficiaries; the average among ophthalmology physician prescribers was 1,518. Part D covers Medicare prescriptions only.
What is Ivan Jisoo Lee, MD's MIPS final score?
The 2023 MIPS final score is 95.3 of 100. 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.