Burton Rubin, M.D.
Internal Medicine Physician · Old Greenwich, CT
Burton Rubin, M.D. is an internal medicine physician with a practice address in Old Greenwich, Connecticut, and NPI 1134105414, issued on Dec 19, 2005. Check the license (Connecticut 31499, as entered in NPPES) on the Connecticut Medical Examining Board; the Medicare figures below come from public CMS files.
- Name
- Burton Rubin
- Credential
- M.D.
- Primary taxonomy
- Internal Medicine Physician 207R00000X
- License number
- 31499 CT
Self-reported in NPPES; status is on the state search - Practice location
- 8 W End Ave, Old Greenwich, CT 06870
- Phone
- (203) 637-5406
- Enumerated
- Dec 19, 2005
- Entity
- Type 1 · individual
Also registered at 8 W End Ave
A shared address usually means a shared clinic or building; it does not show who employs whom.
- Kimberly Asante, MDPediatrics Physician1952896599
- Therese Bernstein, APRNFamily Nurse Practitioner1033459334
- Alison Cass, M.D.Pediatrics Physician1942373113
- Jessica EpsteinPediatrics Physician1902260755
- Amy Kappelman, M.D.Pediatrics Physician1275733651
- Melanie Kelton, M.D.Internal Medicine Physician1083918577
Verify Burton Rubin in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersConnecticut Medical Examining Board
Search for license 31499Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS, AOA, NCCPA, AANPNot checked
97% more Medicare Part D claims than the average internal medicine physician in 2024
5,480 Medicare Part D claims for 587 beneficiaries, against an average of 2,785 among the 127,794 providers of this specialty who prescribed in Part D. Brand-name drugs were 6% of claims. 13 claims were for opioids.
Most prescribed
- Atorvastatin Calcium770 claims
- Amlodipine Besylate264 claims
- Rosuvastatin Calcium261 claims
- Levothyroxine Sodium199 claims
- Losartan Potassium199 claims
- Lisinopril170 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 Medicare quality score for 2023: 94.2 of 100
The Merit-based Incentive Payment System score is reported for this clinician. 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; category weights for 2023 (qpp.cms.gov).
Industry payments in 2024: $48.47
2 payments, mostly food and beverage; the largest payer was Novo Nordisk Inc. The 65,274 providers of this specialty with any payment received $2,536.66 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.
2 hospital and facility affiliations
- Old Greenwich Medical Group LLCOld Greenwich, CT
- Rebecca Warkol MD LLCOld Greenwich, CT
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.
7 internal medicine physician records list a Old Greenwich practice address
They are 7 of the 161 NPPES records with a Old Greenwich practice address, and 2,830 internal medicine physician records in Connecticut.
All 7 in Old Greenwich → All 2,830 in Connecticut → Every provider in Old Greenwich →
Other internal medicine physician records in Connecticut
- Christina AbavanaBridgeport, CT1508206574
- Hoda Abdel Salam, M.D.New Britain, CT1144509316
- Gada Abdelhafiz, MDNew London, CT1467649558
- Mahmoud Abdelrahman, MDBridgeport, CT1467072868
- Simon Abi-SalehBridgeport, CT1891315529
- Gerard Abidor, D.O.Bridgeport, CT1518014539
- Richard Abraham, M.D.Canton, CT1023044252
- Odaliz Abreu-Lanfranco, MDNew Haven, CT1538276134
- Nila Aburto, MDStamford, CT1396325718
- Angelo Accomando, M.D.East Haven, CT1063454247
Common questions
What is Burton Rubin, M.D.'s NPI number?
Burton Rubin, M.D.'s National Provider Identifier (NPI) is 1134105414, issued on Dec 19, 2005. An NPI identifies a provider in billing; it is not a license.
Where is Burton Rubin, M.D. located?
The NPPES record lists a practice address at 8 W End Ave, Old Greenwich, CT, 06870. Phone: (203) 637-5406. Providers update this record themselves, so call before visiting.
How can I verify Burton Rubin, M.D.'s license?
NPPES lists Connecticut license number 31499, 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 Burton Rubin, M.D. prescribe under Medicare Part D?
In 2024, Burton Rubin, M.D. had 5,480 Medicare Part D claims for 587 beneficiaries; the average among internal medicine physician prescribers was 2,785. Part D covers Medicare prescriptions only.
What is Burton Rubin, M.D.'s Medicare quality score?
The 2023 MIPS final score is 94.2 of 100. The average among 454,083 clinicians with a measured score was 83.5.
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.