Stephan Yuan-Yee Chiu, M.D.
Ophthalmology Physician · Los Angeles, CA
Stephan Yuan-Yee Chiu, M.D. is an ophthalmology physician with a practice address in Los Angeles, California, and NPI 1053846956, issued on Apr 27, 2017. Check the license (California A172634, as entered in NPPES) on the Medical Board of California; the Medicare figures below come from public CMS files.
- Name
- Stephan Yuan-Yee Chiu
- Credential
- M.D.
- Primary taxonomy
- Ophthalmology Physician 207W00000X
- License number
- A172634 CA
Self-reported in NPPES; status is on the state search - Practice location
- 100 Stein Plz, Los Angeles, CA 90095
- Phone
- (310) 825-3090
- Enumerated
- Apr 27, 2017
- Record last updated
- Feb 17, 2022
- Medicare enrollment
- Enrolled (PECOS I20210524000194); accepts Medicare assignment
- Medical or professional school
- University Of California, Geffen School Of Medicine, 2017
- Entity
- Type 1 · individual
8 nearest ophthalmology physician records → All 2,899 in California → Look up another NPI →
Also registered at 100 Stein Plz
A shared address usually means a shared clinic or building; it does not show who employs whom.
- Diana Abrahamyan, ODOptometrist1538834932
- Diego AriasOphthalmology Physician1346998093
- Reginald Ariyasu, MDOphthalmology Physician1285654939
- William Astle, MDOphthalmology Physician1700808276
- Adrian Au, MDRetina Specialist (Ophthalmology) Physician1124482450
- Saghar Bagheri, MDGlaucoma Specialist (Ophthalmology) Physician1821627399
Verify Stephan Yuan-Yee Chiu in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersMedical Board of California
Search for license A172634Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
25% more Medicare Part D claims than the average ophthalmology physician in 2024
1,900 Medicare Part D claims for 494 beneficiaries, against an average of 1,518 among the 16,459 providers of this specialty who prescribed in Part D. Brand-name drugs were 52% of claims.
Most prescribed
- Latanoprost475 claims
- Prednisolone Acetate351 claims
- Moxifloxacin264 claims
- Dorzolamide-Timolol132 claims
- Timolol Maleate116 claims
- Restasis96 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: $1,460.17
31 payments; by number, the most common kind was food and beverage; the largest payer was Bausch & Lomb Americas 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
- V. Nicholas Batra M.D. Inc.San Leandro, CA
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
Stephan Yuan-Yee Chiu among 2,899 ophthalmology physician records in California
Stephan Yuan-Yee Chiu, M.D. 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 updated2022 · 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 Los Angeles → Ophthalmology Physician nationwide →
The 8 ophthalmology physician records with the nearest ZIP codes
- Reginald Ariyasu, MDLos Angeles, CA 900951285654939
- Anthony Arnold, MDLos Angeles, CA 900951629098314
- William Astle, MDLos Angeles, CA 900951700808276
- John Bartlett, MDLos Angeles, CA 900951144242611
- Katherine Bergwerk, MDLos Angeles, CA 900951952323941
- Joseph Caprioli, MDLos Angeles, CA 900951417979584
- Sophie Deng, M.D.Los Angeles, CA 900951194775890
- Michael Gorin, MDLos Angeles, CA 900951578536462
Common questions
What is Stephan Yuan-Yee Chiu, M.D.'s NPI number?
Stephan Yuan-Yee Chiu, M.D.'s National Provider Identifier (NPI) is 1053846956, issued on Apr 27, 2017. An NPI identifies a provider in billing; it is not a license.
Where is Stephan Yuan-Yee Chiu, M.D. located?
The NPPES record lists a practice address at 100 Stein Plz, Los Angeles, CA, 90095. Phone: (310) 825-3090. Providers update this record themselves, so call before visiting.
How can I verify Stephan Yuan-Yee Chiu, M.D.'s license?
NPPES lists California license number A172634, 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 Stephan Yuan-Yee Chiu, M.D. prescribe under Medicare Part D?
In 2024, Stephan Yuan-Yee Chiu, M.D. had 1,900 Medicare Part D claims for 494 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.