Felix Yan-Fay Chau, M.D.
Ophthalmology Physician · Chicago, IL
Felix Yan-Fay Chau, M.D. is an ophthalmology physician with a practice address in Chicago, Illinois, and NPI 1649458878, issued on Feb 11, 2008. Check the license (Illinois 036120416, as entered in NPPES) on the Illinois Department of Financial and Professional Regulation; the Medicare figures below come from public CMS files.
- Name
- Felix Yan-Fay Chau
- Credential
- M.D.
- Primary taxonomy
- Ophthalmology Physician 207W00000X
- License numbers
- 036120416 IL
127918 NC
Self-reported in NPPES; status is on the state search - Practice location
- 1855 W Taylor St, Chicago, IL 60612
- Phone
- (847) 345-3179
- Enumerated
- Feb 11, 2008
- Record last updated
- Apr 2, 2013 (not updated in 13 years: call before relying on the address or phone)
- Medicare enrollment
- Enrolled (PECOS I20080904000092); accepts Medicare assignment
- Medical or professional school
- University Of Iowa, Rj & L Carver College Of Medicine, 2004
- Entity
- Type 1 · individual
8 nearest ophthalmology physician records → All 898 in Illinois → Look up another NPI →
Also registered at 1855 W Taylor St
A shared address usually means a shared clinic or building; it does not show who employs whom.
- Allison Albian, PA-CPhysician Assistant1518367556
- Modjtaba AmirahmadiOphthalmology Physician1497976831
- Ahmad Aref, M.D.Ophthalmology Physician1053522540
- Ibrahim Asseidat, M.D.Ophthalmology Physician1558483693
- Nathalie Azar, M.D.Ophthalmology Physician1437133295
- Karl Becker, M.D.Ophthalmology Physician1114471745
Verify Felix Yan-Fay Chau in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersIllinois Department of Financial and Professional Regulation
Search for license 036120416Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
80% fewer Medicare Part D claims than the average ophthalmology physician in 2024
309 Medicare Part D claims for 71 beneficiaries, against an average of 1,518 among the 16,459 providers of this specialty who prescribed in Part D. Brand-name drugs were 35% of claims.
Most prescribed
- Prednisolone Acetate89 claims
- Ketorolac Tromethamine51 claims
- Timolol Maleate27 claims
- Brimonidine Tartrate24 claims
- Dorzolamide-Timolol20 claims
- Dorzolamide Hcl18 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): 87.1 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: $67.32
2 payments; by number, the most common kind was food and beverage; the largest payer was Regeneron Healthcare Solutions, 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
- The Board OF Trustees OF The University OF IllinoisChicago, IL
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
Felix Yan-Fay Chau among 898 ophthalmology physician records in Illinois
Felix Yan-Fay Chau, M.D. is one of 898 ophthalmology physician records with a practice address in Illinois. 75% 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 64% of them.
- NPI issued2008 · 64% of these records are older, 31% newer
- In a Medicare fileYes · 75% of these records are
- In the CMS Doctors and Clinicians fileYes · 61% of these records are
- Graduated2004 · median 1999 among the 551 with a school on file
- Record last updated2013 · 60% 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 Illinois practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
Ophthalmology Physician providers in Illinois
There are 898 ophthalmology physician records in Illinois.
All 898 in Illinois → Every provider in Chicago → Ophthalmology Physician nationwide →
The 8 ophthalmology physician records with the nearest ZIP codes
- Nathalie Azar, M.D.Chicago, IL 606121437133295
- Adrienne Berman, MDChicago, IL 606121003826173
- Robison Chan, MDChicago, IL 606121144204397
- Ali D'Jalilian, MDChicago, IL 606121649299363
- James Goodwin, M.D.Chicago, IL 606121023038783
- Richard Grostern, MDChicago, IL 606121902881170
- Sandeep Jain, M.D.Chicago, IL 606121972616613
- Charlotte JoslinChicago, IL 606121194735217
Common questions
What is Felix Yan-Fay Chau, M.D.'s NPI number?
Felix Yan-Fay Chau, M.D.'s National Provider Identifier (NPI) is 1649458878, issued on Feb 11, 2008. An NPI identifies a provider in billing; it is not a license.
Where is Felix Yan-Fay Chau, M.D. located?
The NPPES record lists a practice address at 1855 W Taylor St, Chicago, IL, 60612. Phone: (847) 345-3179. Providers update this record themselves, so call before visiting.
How can I verify Felix Yan-Fay Chau, M.D.'s license?
NPPES lists Illinois license number 036120416, as entered by the provider. Search the Illinois Department of Financial and Professional Regulation at https://idfpr.illinois.gov/checklicense.html. The NPPES record confirms identity only; the state search shows license status, expiration and public orders.
How much does Felix Yan-Fay Chau, M.D. prescribe under Medicare Part D?
In 2024, Felix Yan-Fay Chau, M.D. had 309 Medicare Part D claims for 71 beneficiaries; the average among ophthalmology physician prescribers was 1,518. Part D covers Medicare prescriptions only.
What is Felix Yan-Fay Chau, M.D.'s MIPS final score?
The 2023 MIPS final score is 87.1 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.