Harold Sy, MD
Cornea and External Diseases Specialist Physician · Chicago, IL
Harold Sy, MD is a cornea and external diseases specialist physician with a practice address in Chicago, Illinois, and NPI 1992730030, issued on Jul 11, 2006. Check the license on the Illinois Department of Financial and Professional Regulation; the Medicare figures below come from public CMS files.
- Name
- Harold Sy
- Credential
- MD
- Primary taxonomy
- Cornea and External Diseases Specialist Physician 207WX0120X
- Practice location
- 5086 N Elston Ave, Chicago, IL 60630
- Phone
- (773) 282-2000
- Enumerated
- Jul 11, 2006
- Entity
- Type 1 · individual
Also registered at 5086 N Elston Ave
A shared address usually means a shared clinic or building; it does not show who employs whom.
- Morgan FrechieOphthalmology Physician1477044428
- Michelle Khan, PA-CPhysician Assistant1093984056
- Edward Lichtenberg, MDGynecology Physician1427132950
- Saagar Pandit, MDOphthalmology Physician1598253437
- Ruby Yamamoto, PA-CMedical Physician Assistant1154654952
Verify Harold Sy in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersIllinois Department of Financial and Professional RegulationCheck the board
- 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS, AOA, NCCPA, AANPNot checked
57% more Medicare Part D claims than the average cornea and external diseases specialist physician in 2024
2,044 Medicare Part D claims for 528 beneficiaries, against an average of 1,306 among the 282 providers of this specialty who prescribed in Part D. Brand-name drugs were 37% of claims.
Most prescribed
- Latanoprost607 claims
- Erythromycin210 claims
- Ketorolac Tromethamine207 claims
- Prednisolone Acetate200 claims
- Moxifloxacin127 claims
- Timolol Maleate113 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: $937.49
38 payments, mostly food and beverage; the largest payer was Glaukos Corporation. The 247 providers of this specialty with any payment received $3,865.64 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 or facility affiliation
- Ocular Partners PLLCChicago, IL
Source: CMS Doctors and Clinicians affiliations; Hospital General Information (Care Compare) (data.cms.gov). Star ratings are CMS hospital ratings, not ratings of this provider.
Cornea and External Diseases Specialist Physician providers in Illinois
There are 13 cornea and external diseases specialist physician records in Illinois.
Other cornea and external diseases specialist physician records in Illinois
- Farshad Abedi, MD, DMEDSCChicago, IL1992543722
- Andrea Arteaga, MDChicago, IL1154826584
- Rachel Epstein, M.D.Highland Park, IL1164863353
- Carter Kirk, M.D.River Forest, IL1083979181
- Janet Lee, MDWheaton, IL1407062953
- Christina Mamalis, MDMaywood, IL1063876530
- Jennifer ParkChicago, IL1568880318
- Raiza Perez, MDChicago, IL1790536886
- Arnaldo Roizenblatt, MDChicago, IL1609799790
- Dylan Stevens, MDNew Lenox, IL1316442114
Common questions
What is Harold Sy, MD's NPI number?
Harold Sy, MD's National Provider Identifier (NPI) is 1992730030, issued on Jul 11, 2006. An NPI identifies a provider in billing; it is not a license.
Where is Harold Sy, MD located?
The NPPES record lists a practice address at 5086 N Elston Ave, Chicago, IL, 60630. Phone: (773) 282-2000. Providers update this record themselves, so call before visiting.
How can I verify Harold Sy, MD's license?
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 Harold Sy, MD prescribe under Medicare Part D?
In 2024, Harold Sy, MD had 2,044 Medicare Part D claims for 528 beneficiaries; the average among cornea and external diseases specialist physician prescribers was 1,306. Part D covers Medicare prescriptions only.
Source: CMS National Plan and Provider Enumeration System (NPPES), loaded Aug 27, 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.
Every figure on PlainDoctor is rendered directly from the federal CMS NPPES registry, Medicare Part D, MIPS, and Open Payments records, no number is typed in by an editor. See our editorial standards & corrections policy, the methodology behind these numbers, or report a data error. Data current as of Aug 27, 2026.