James C. Liang, M.D.
Ophthalmology Physician · Oak Lawn, IL
James C. Liang, M.D. is an ophthalmology physician with a practice address in Oak Lawn, Illinois, and NPI 1578541983, issued on Jan 5, 2006. Check the license (Illinois 036051267, as entered in NPPES) on the Illinois Department of Financial and Professional Regulation; the Medicare figures below come from public CMS files.
- Name
- James C. Liang
- Credential
- M.D.
- Primary taxonomy
- Ophthalmology Physician 207W00000X
- License number
- 036051267 IL
Self-reported in NPPES; status is on the state search - Practice location
- 4429 W 95TH St, Oak Lawn, IL 60453
- Phone
- (708) 422-2665
- Enumerated
- Jan 5, 2006
- Record last updated
- Jul 5, 2023
- Fax
- (708) 422-2997
- Medicaid ID
- 036051267 IL
- Medicare enrollment
- Enrolled (PECOS I20040816000217); accepts Medicare assignment
- Medical or professional school
- University Of California, San Diego School Of Medicine, 1974
- Entity
- Type 1 · individual
8 nearest ophthalmology physician records → All 898 in Illinois → Look up another NPI →
Verify James C. Liang 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 036051267Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
58% fewer Medicare Part D claims than the average ophthalmology physician in 2024
632 Medicare Part D claims for 125 beneficiaries, against an average of 1,518 among the 16,459 providers of this specialty who prescribed in Part D. Brand-name drugs were 27% of claims.
Most prescribed
- Latanoprost263 claims
- Ketorolac Tromethamine147 claims
- Timolol Maleate50 claims
- Dorzolamide-Timolol36 claims
- Brimonidine Tartrate32 claims
- Prednisolone Acetate24 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: $145.27
5 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
- Retinal Vitreal Consultants LtdChicago, IL
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
James C. Liang among 898 ophthalmology physician records in Illinois
James C. Liang, 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 2006, is newer than 16% of them.
- NPI issued2006 · 16% of these records are older, 44% newer
- In a Medicare fileYes · 75% of these records are
- In the CMS Doctors and Clinicians fileYes · 61% of these records are
- Graduated1974 · median 1999 among the 551 with a school on file
- Record last updated2023 · 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 Oak Lawn → Ophthalmology Physician nationwide →
The 8 ophthalmology physician records with the nearest ZIP codes
- Mohammad Al-Khudari, MDOak Lawn, IL 604531902891948
- Jonathan Buka, M.D.Oak Lawn, IL 604531477522050
- Agnieszka CantreOak Lawn, IL 604531356463897
- Nicholas Chan, M.D.Oak Lawn, IL 604531396132403
- Ralph Dado, MDOak Lawn, IL 604531811956725
- Wassia Khaja Ahmed, M.D.Oak Lawn, IL 604531932427754
- Inae Kim, MDOak Lawn, IL 604531043831894
- Sanjay Rao, M.D.Oak Lawn, IL 604531790738615
Common questions
What is James C. Liang, M.D.'s NPI number?
James C. Liang, M.D.'s National Provider Identifier (NPI) is 1578541983, issued on Jan 5, 2006. An NPI identifies a provider in billing; it is not a license.
Where is James C. Liang, M.D. located?
The NPPES record lists a practice address at 4429 W 95TH St, Oak Lawn, IL, 60453. Phone: (708) 422-2665. Providers update this record themselves, so call before visiting.
How can I verify James C. Liang, M.D.'s license?
NPPES lists Illinois license number 036051267, 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 James C. Liang, M.D. prescribe under Medicare Part D?
In 2024, James C. Liang, M.D. had 632 Medicare Part D claims for 125 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.