John S. Lean, M D F R C S
Retina Specialist (Ophthalmology) Physician · Laguna Hills, CA
John S. Lean, M D F R C S is a retina specialist (ophthalmology) physician with a practice address in Laguna Hills, California, and NPI 1962513465, issued on Aug 31, 2006. Check the license (California A41624, as entered in NPPES) on the Medical Board of California; the Medicare figures below come from public CMS files.
- Name
- John S. Lean
- Credential
- M D F R C S
- Primary taxonomy
- Retina Specialist (Ophthalmology) Physician 207WX0107X
- License number
- A41624 CA
Self-reported in NPPES; status is on the state search - Practice location
- 23521 Paseo DE Valencia, Laguna Hills, CA 92653
- Phone
- (949) 707-5125
- Enumerated
- Aug 31, 2006
- Record last updated
- Mar 31, 2017 (not updated in 9 years: call before relying on the address or phone)
- Fax
- (949) 707-5129
- Medicaid ID
- 00A416241 CA
- Medicare enrollment
- Enrolled (PECOS I20070608000580); accepts Medicare assignment
- Entity
- Type 1 · individual
8 nearest retina specialist (ophthalmology) physician records → All 205 in California → Look up another NPI →
Also registered at 23521 Paseo DE Valencia
A shared address usually means a shared clinic or building; it does not show who employs whom.
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- Lido Chen, MDInterventional Pain Medicine Physician1891781753
- Priscilla Chow, NPFamily Nurse Practitioner1376510743
- Lori ClarkInternal Medicine Physician1972634897
- Charles Eifrig, M.D.Retina Specialist (Ophthalmology) Physician1306812979
Verify John S. Lean in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersMedical Board of California
Search for license A41624Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
87% fewer Medicare Part D claims than the average retina specialist (ophthalmology) physician in 2024
78 Medicare Part D claims for 21 beneficiaries, against an average of 620 among the 1,449 providers of this specialty who prescribed in Part D. Brand-name drugs were 44% of claims.
Most prescribed
- Prednisolone Acetate17 claims
- Latanoprost16 claims
- Tobramycin-Dexamethasone16 claims
- Timolol Maleate15 claims
- Brimonidine Tartrate11 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): 100 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.
Source: CMS Quality Payment Program, MIPS performance year 2023, group reporting; category weights for 2023 (qpp.cms.gov).
Bills Medicare through one group practice
- Retina Associates OF Orange CountySanta Ana, CA
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
John S. Lean among 205 retina specialist (ophthalmology) physician records in California
John S. Lean, M D F R C S is one of 205 retina specialist (ophthalmology) physician records with a practice address in California. 98% of them appear in a Medicare file (Part D prescribing, MIPS, Open Payments or Medicare group billing); this one does. Its NPI, issued in 2006, is newer than 5% of them.
- NPI issued2006 · 5% of these records are older, 65% newer
- In a Medicare fileYes · 98% of these records are
- In the CMS Doctors and Clinicians fileYes · 92% of these records are
- Graduated1971 · median 2007 among the 189 with a school on file
- Record last updated2017 · 37% of these records were not updated in five years or more
Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 207WX0107X and a California practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
Retina Specialist (Ophthalmology) Physician providers in California
There are 205 retina specialist (ophthalmology) physician records in California.
All 205 in California → Every provider in Laguna Hills → Retina Specialist (Ophthalmology) Physician nationwide →
The 8 retina specialist (ophthalmology) physician records with the nearest ZIP codes
- Charles Eifrig, M.D.Laguna Hills, CA 926531306812979
- John Hwang, MDLaguna Hills, CA 926531629235510
- Hani Salehi-Had, M.D.Huntington Beach, CA 926471306909403
- Nathan Rudometkin, MDLaguna Woods, CA 926371225128994
- Nadeem Vaidya, M.D.Irvine, CA 926181578616520
- Andrew Browne, M.D., PH.D.Irvine, CA 926171154615383
- Baruch Kuppermann, MDIrvine, CA 926171326128455
- Stephanie Lu, MDIrvine, CA 926171346420437
Common questions
What is John S. Lean, M D F R C S's NPI number?
John S. Lean, M D F R C S's National Provider Identifier (NPI) is 1962513465, issued on Aug 31, 2006. An NPI identifies a provider in billing; it is not a license.
Where is John S. Lean, M D F R C S located?
The NPPES record lists a practice address at 23521 Paseo DE Valencia, Laguna Hills, CA, 92653. Phone: (949) 707-5125. Providers update this record themselves, so call before visiting.
How can I verify John S. Lean, M D F R C S's license?
NPPES lists California license number A41624, 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 John S. Lean, M D F R C S prescribe under Medicare Part D?
In 2024, John S. Lean, M D F R C S had 78 Medicare Part D claims for 21 beneficiaries; the average among retina specialist (ophthalmology) physician prescribers was 620. Part D covers Medicare prescriptions only.
What is John S. Lean, M D F R C S's MIPS final score?
The 2023 MIPS final score is 100 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.