Loh-Shan Bryan Leung, MD
Retina Specialist (Ophthalmology) Physician · Stanford, CA
Loh-Shan Bryan Leung, MD is a retina specialist (ophthalmology) physician with a practice address in Stanford, California, and NPI 1639330772, issued on Jun 20, 2008. Check the license (California A109299, as entered in NPPES) on the Medical Board of California; the Medicare figures below come from public CMS files.
- Name
- Loh-Shan Bryan Leung
- Credential
- MD
- Primary taxonomy
- Retina Specialist (Ophthalmology) Physician 207WX0107X
- License numbers
- A109299 CA
241716 NY
Self-reported in NPPES; status is on the state search - Practice location
- 300 Pasteur Dr, Stanford, CA 94305
- Phone
- (650) 723-4000
- Enumerated
- Jun 20, 2008
- Record last updated
- Apr 4, 2024
- Medicare enrollment
- Enrolled (PECOS I20091030000358); accepts Medicare assignment
- Medical or professional school
- Johns Hopkins University School Of Medicine, 2005
- Entity
- Type 1 · individual
8 nearest retina specialist (ophthalmology) physician records → All 205 in California → Look up another NPI →
Also registered at 300 Pasteur Dr
A shared address usually means a shared clinic or building; it does not show who employs whom.
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Verify Loh-Shan Bryan Leung in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersMedical Board of California
Search for license A109299Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
90% fewer Medicare Part D claims than the average retina specialist (ophthalmology) physician in 2024
63 Medicare Part D claims for 22 beneficiaries, against an average of 620 among the 1,449 providers of this specialty who prescribed in Part D. Brand-name drugs were 17% of claims.
Most prescribed
- Azelastine Hcl24 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): 76.5 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).
Industry payments in 2024: $23.90
1 payment: food and beverage; the largest payer was Regeneron Pharmaceuticals, Inc. The 1,253 providers of this specialty with any payment received $7,667.49 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.
One hospital affiliation
- Stanford Health CarePalo Alto, CA · Acute Care Hospitals5 of 5 stars
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through); hospitals matched to CMS Hospital General Information (Care Compare) (data.cms.gov). Star ratings are CMS hospital ratings, not ratings of this provider.
Loh-Shan Bryan Leung among 205 retina specialist (ophthalmology) physician records in California
Loh-Shan Bryan Leung, MD 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 2008, is newer than 43% of them.
- NPI issued2008 · 43% of these records are older, 50% newer
- In a Medicare fileYes · 98% of these records are
- In the CMS Doctors and Clinicians fileYes · 92% of these records are
- Graduated2005 · median 2007 among the 189 with a school on file
- Record last updated2024 · 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 Stanford → Retina Specialist (Ophthalmology) Physician nationwide →
The 8 retina specialist (ophthalmology) physician records with the nearest ZIP codes
- Natalia Callaway, MDStanford, CA 943051891109294
- Charles Deboer, MDStanford, CA 943051134649973
- Diana Do, MDStanford, CA 943051245270313
- Mary Elizabeth Hartnett, MDStanford, CA 943051871507020
- Quan Hoang, MD, PHDStanford, CA 943051033314257
- Theodore Leng, MDStanford, CA 943051144438987
- Chase Ludwig, MDStanford, CA 943051932556875
- Prithvi Mruthyunjaya, MDStanford, CA 943051073670477
Common questions
What is Loh-Shan Bryan Leung, MD's NPI number?
Loh-Shan Bryan Leung, MD's National Provider Identifier (NPI) is 1639330772, issued on Jun 20, 2008. An NPI identifies a provider in billing; it is not a license.
Where is Loh-Shan Bryan Leung, MD located?
The NPPES record lists a practice address at 300 Pasteur Dr, Stanford, CA, 94305. Phone: (650) 723-4000. Providers update this record themselves, so call before visiting.
How can I verify Loh-Shan Bryan Leung, MD's license?
NPPES lists California license number A109299, 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 Loh-Shan Bryan Leung, MD prescribe under Medicare Part D?
In 2024, Loh-Shan Bryan Leung, MD had 63 Medicare Part D claims for 22 beneficiaries; the average among retina specialist (ophthalmology) physician prescribers was 620. Part D covers Medicare prescriptions only.
What is Loh-Shan Bryan Leung, MD's MIPS final score?
The 2023 MIPS final score is 76.5 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.