NPPES file of Aug 9, 2026

Ron Margolis, M.D.

Ophthalmology Physician · Manchester, CT

Ron Margolis, M.D. is an ophthalmology physician with a practice address in Manchester, Connecticut, and NPI 1679757868, issued on Dec 24, 2007. Check the license (Connecticut 048418, as entered in NPPES) on the Connecticut Medical Examining Board; the Medicare figures below come from public CMS files.

Record from CMS NPPES, file of Aug 9, 2026 · Medicare files 2023 and 2024 · method · Verify with CMS →

NPPES recordNPPES file of Aug 9, 2026
1679757868
Name
Ron Margolis
Credential
M.D.
Primary taxonomy
Ophthalmology Physician 207W00000X
License number
048418 CT
Self-reported in NPPES; status is on the state search
Practice location
191 Main St, Manchester, CT 06042
Phone
(860) 646-7704
Enumerated
Dec 24, 2007
Record last updated
Jun 28, 2021 (not updated in 5 years: call before relying on the address or phone)
Fax
(860) 647-7340
Medicare enrollment
Enrolled (PECOS I20100806000000); accepts Medicare assignment
Medical or professional school
Js Weill Medical College, Cornell University, 2004
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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Also registered at 191 Main St

A shared address usually means a shared clinic or building; it does not show who employs whom.

  1. Peter Judson, M.D.Ophthalmology Physician1376541011
  2. Jerry Neuwirth, MDOphthalmology Physician1992702526
  3. Noam Rudnick, MDOphthalmology Physician1700317278
  4. Marion Stoj, M.D.Ophthalmology Physician1457334195

Verify Ron Margolis in five checks

  1. 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
  2. 2LicenseActive license and public ordersConnecticut Medical Examining Board
    Search for license 048418
    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 Connecticut license search

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16% more Medicare Part D claims than the average ophthalmology physician in 2024

1,757 Medicare Part D claims for 702 beneficiaries, against an average of 1,518 among the 16,459 providers of this specialty who prescribed in Part D. Brand-name drugs were 41% of claims. 57 claims were for opioids.

  1. Ron Margolis1,757
  2. Specialty average1,518

Most prescribed

  1. Neomycin-Polymyxin-Dexameth534 claims
  2. Prednisolone Acetate221 claims
  3. Latanoprost136 claims
  4. Dorzolamide-Timolol78 claims
  5. Ketorolac Tromethamine78 claims
  6. Polymyxin B Sul-Trimethoprim76 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): 100 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.

  1. Qualityout of 100 · 30% of the final score100.0
  2. Costnot scored (reweighted)
  3. Promoting interoperabilitynot scored (reweighted)
  4. Improvement activities40 of 40 points · 15%100.0

Source: CMS Quality Payment Program, MIPS performance year 2023, group reporting; category weights for 2023 (qpp.cms.gov).

Industry payments in 2024: $27.42

1 payment: food and beverage; the largest payer was Genentech USA, 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.

  1. Ron Margolis$27.42
  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 one group practice

  1. Retina Consultants PCHartford, CT

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

Ophthalmology Physician providers in Connecticut

There are 336 ophthalmology physician records in Connecticut.

Other ophthalmology physician records in Connecticut

  1. Marcio Abreu, M.D.Bridgeport, CT1366721995
  2. Laura Andrews, MDWaterbury, CT1710390646
  3. Shimy ApoorvaWaterbury, CT1518499367
  4. Yehuda Assouline, M.D.Danbury, CT1578514709
  5. Duane Austin, M.D.West Hartford, CT1477654838
  6. Sarah Baroody, M.D.Newtown, CT1710921861
  7. Anthony Barri, MDGroton, CT1245348796
  8. Michael Bautista, MDWestport, CT1689038671
  9. Herbert Becker, MDHartford, CT1801852314
  10. Thomas Beggins, M.D.Middletown, CT1235140104

Common questions

What is Ron Margolis, M.D.'s NPI number?

Ron Margolis, M.D.'s National Provider Identifier (NPI) is 1679757868, issued on Dec 24, 2007. An NPI identifies a provider in billing; it is not a license.

Where is Ron Margolis, M.D. located?

The NPPES record lists a practice address at 191 Main St, Manchester, CT, 06042. Phone: (860) 646-7704. Providers update this record themselves, so call before visiting.

How can I verify Ron Margolis, M.D.'s license?

NPPES lists Connecticut license number 048418, as entered by the provider. Search the Connecticut Medical Examining Board at https://www.elicense.ct.gov/Lookup/LicenseLookup.aspx. The NPPES record confirms identity only; the state search shows license status, expiration and public orders.

How much does Ron Margolis, M.D. prescribe under Medicare Part D?

In 2024, Ron Margolis, M.D. had 1,757 Medicare Part D claims for 702 beneficiaries; the average among ophthalmology physician prescribers was 1,518. Part D covers Medicare prescriptions only.

What is Ron Margolis, M.D.'s MIPS final score?

The 2023 MIPS final score is 100 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.