NPPES file of Aug 9, 2026

Ronald S. Weiss, M.D.

Ophthalmology Physician · Stickney, IL

Ronald S. Weiss, M.D. is an ophthalmology physician with a practice address in Stickney, Illinois, and NPI 1912910019, issued on Aug 14, 2006. Check the license (Illinois 036079050, as entered in NPPES) on the Illinois Department of Financial and Professional Regulation; the Medicare figures below come from public CMS files.

Record from CMS NPPES, file of Aug 9, 2026 · Medicare files 2024 · method · Verify with CMS →

NPPES recordNPPES file of Aug 9, 2026
1912910019
Name
Ronald S. Weiss
Credential
M.D.
Primary taxonomy
Ophthalmology Physician 207W00000X
License number
036079050 IL
Self-reported in NPPES; status is on the state search
Practice location
4401 Harlem Ave, Stickney, IL 60402
Phone
(708) 788-3400
Enumerated
Aug 14, 2006
Record last updated
Apr 29, 2015 (not updated in 11 years: call before relying on the address or phone)
Medicaid ID
036079050 IL
Medicare enrollment
Enrolled (PECOS I20060220000191); accepts Medicare assignment
Medical or professional school
Northwestern University Feinberg Medical School, 1986
Entity
Type 1 · individual
Public record from CMS NPPES (open it on the CMS NPI Registry). Enrollment, assignment, school and telehealth: CMS Doctors and Clinicians file, Aug 2026. A record is not a license: verify it with the state board.
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Verify Ronald S. Weiss in five checks

  1. 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
  2. 2LicenseActive license and public ordersIllinois Department of Financial and Professional Regulation
    Search for license 036079050
    Check the board
  3. 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
  4. 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
  5. 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
Open the Illinois license search

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2.2 times the Medicare Part D claims of the average ophthalmology physician in 2024

3,391 Medicare Part D claims for 841 beneficiaries, against an average of 1,518 among the 16,459 providers of this specialty who prescribed in Part D.

  1. Ronald Weiss3,391
  2. Specialty average1,518

Most prescribed

  1. Latanoprost1,150 claims
  2. Prednisolone Acetate345 claims
  3. Ketorolac Tromethamine260 claims
  4. Timolol Maleate247 claims
  5. Brimonidine Tartrate231 claims
  6. Ofloxacin231 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: $1,509.05

29 payments; by number, the most common kind was food and beverage; the largest payer was Alcon Vision LLC. 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.

  1. Ronald Weiss$1,509.05
  2. Specialty average$4,535.02

Source: CMS Open Payments, program year 2024 (openpaymentsdata.cms.gov); average among providers of this specialty with at least one payment.

Bills Medicare through 2 group practices

  1. Eye Center Physicians, Ltd.Chicago, IL
  2. Ronald S Weiss MD SCStickney, IL

Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).

Ronald S. Weiss among 898 ophthalmology physician records in Illinois

Ronald S. Weiss, 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
  • Graduated1986 · median 1999 among the 551 with a school on file
  • Record last updated2015 · 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).

2 ophthalmology physician records list a practice address in Stickney

They are 2 of the 27 NPPES records with a practice address in Stickney, and 898 ophthalmology physician records in Illinois.

The 8 ophthalmology physician records with the nearest ZIP codes

  1. Raymond Nootens, M.D.Stickney, IL 604021689687790
  2. Martin Joffe, MDBlue Island, IL 604061508855446
  3. Seth Kaplan, M.D.Blue Island, IL 604061548224454
  4. Afzal Ahmad, M.D.Calumet City, IL 604091629061684
  5. Mohammed Peracha, MDCalumet City, IL 604091982606950
  6. Ashley Rohr, M.D.Calumet City, IL 604091629364708
  7. Srigurunath Vangipuram, M.D.Calumet City, IL 604091265425284
  8. Michael Weisberg, M.D.Calumet City, IL 604091205097607

Common questions

What is Ronald S. Weiss, M.D.'s NPI number?

Ronald S. Weiss, M.D.'s National Provider Identifier (NPI) is 1912910019, issued on Aug 14, 2006. An NPI identifies a provider in billing; it is not a license.

Where is Ronald S. Weiss, M.D. located?

The NPPES record lists a practice address at 4401 Harlem Ave, Stickney, IL, 60402. Phone: (708) 788-3400. Providers update this record themselves, so call before visiting.

How can I verify Ronald S. Weiss, M.D.'s license?

NPPES lists Illinois license number 036079050, 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 Ronald S. Weiss, M.D. prescribe under Medicare Part D?

In 2024, Ronald S. Weiss, M.D. had 3,391 Medicare Part D claims for 841 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.