Lai-Sung Eric Leung, MD
Ophthalmology Physician · San Francisco, CA
Lai-Sung Eric Leung, MD is an ophthalmology physician with a practice address in San Francisco, California, and NPI 1316958440, issued on Aug 11, 2006. Check the license (California C35631, as entered in NPPES) on the Medical Board of California; the Medicare figures below come from public CMS files.
- Name
- Lai-Sung Eric Leung
- Credential
- MD
- Primary taxonomy
- Ophthalmology Physician 207W00000X
- License number
- C35631 CA
Self-reported in NPPES; status is on the state search - Practice location
- 929 Clay St Suite 503, San Francisco, CA 94108
- Phone
- (415) 986-3215
- Enumerated
- Aug 11, 2006
- Record last updated
- Jul 8, 2007 (not updated in 19 years: call before relying on the address or phone)
- Fax
- (415) 986-1118
- Medicaid ID
- 00C356310 CA
- Medicare enrollment
- Enrolled (PECOS I20100329000496); accepts Medicare assignment
- Medical or professional school
- Johns Hopkins University School Of Medicine, 1970
- Entity
- Type 1 · individual
8 nearest ophthalmology physician records → All 2,899 in California → Look up another NPI →
Verify Lai-Sung Eric Leung in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersMedical Board of California
Search for license C35631Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
29% fewer Medicare Part D claims than the average ophthalmology physician in 2024
1,081 Medicare Part D claims for 325 beneficiaries, against an average of 1,518 among the 16,459 providers of this specialty who prescribed in Part D. Brand-name drugs were 33% of claims.
Most prescribed
- Latanoprost366 claims
- Azelastine Hcl176 claims
- Timolol Maleate69 claims
- Prednisolone Acetate61 claims
- Neomycin-Polymyxin-Dexameth57 claims
- Erythromycin48 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: $128.87
1 payment: food and beverage; the largest payer was Janssen 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.
Source: CMS Open Payments, program year 2024 (openpaymentsdata.cms.gov); average among providers of this specialty with at least one payment.
Bills Medicare through one group practice
- L Eric Leung M D A Professional CorporationSan Francisco, CA
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
Lai-Sung Eric Leung among 2,899 ophthalmology physician records in California
Lai-Sung Eric Leung, 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 2006, is newer than 9% of them.
- NPI issued2006 · 9% of these records are older, 45% newer
- In a Medicare fileYes · 79% of these records are
- In the CMS Doctors and Clinicians fileYes · 66% of these records are
- Graduated1970 · median 2001 among the 1,907 with a school on file
- Record last updated2007 · 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 San Francisco → Ophthalmology Physician nationwide →
The 8 ophthalmology physician records with the nearest ZIP codes
- Michael Turan, M.D.San Francisco, CA 941081164468799
- Jennifer Yang, MDSan Francisco, CA 941081912101528
- Jon Yang, M.D.San Francisco, CA 941081649417742
- David Yee, MDSan Francisco, CA 941081104991751
- Gabriel Aguilar, MDSan Francisco, CA 941091366544371
- Param Bhatter, MDSan Francisco, CA 941091992330021
- Ella Faktorovich, M.D.San Francisco, CA 941091013042266
- Georgia Kamboj, MBBS, PHDSan Francisco, CA 941091366946170
Common questions
What is Lai-Sung Eric Leung, MD's NPI number?
Lai-Sung Eric Leung, MD's National Provider Identifier (NPI) is 1316958440, issued on Aug 11, 2006. An NPI identifies a provider in billing; it is not a license.
Where is Lai-Sung Eric Leung, MD located?
The NPPES record lists a practice address at 929 Clay St Suite 503, San Francisco, CA, 94108. Phone: (415) 986-3215. Providers update this record themselves, so call before visiting.
How can I verify Lai-Sung Eric Leung, MD's license?
NPPES lists California license number C35631, 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 Lai-Sung Eric Leung, MD prescribe under Medicare Part D?
In 2024, Lai-Sung Eric Leung, MD had 1,081 Medicare Part D claims for 325 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.