NPPES file of Aug 9, 2026

Robert C. Teltser, M.D.

Internal Medicine Physician · Westport, CT

Robert C. Teltser, M.D. is an internal medicine physician with a practice address in Westport, Connecticut, and NPI 1821291675, issued on Jun 8, 2007. Check the license (Connecticut 045272, 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 2024 · method · Verify with CMS →

NPPES recordNPPES file of Aug 9, 2026
1821291675
Name
Robert C. Teltser
Credential
M.D.
Primary taxonomy
Internal Medicine Physician 207R00000X
License number
045272 CT
Self-reported in NPPES; status is on the state search
Practice location
333 Post Road West, Westport, CT 06880
Phone
(203) 571-3000
Enumerated
Jun 8, 2007
Record last updated
Jun 1, 2022
Fax
(203) 349-8179
Medicare enrollment
Enrolled (PECOS I20080226000700); accepts Medicare assignment
Medical or professional school
University Of Miami, Lm Miller School Of Medicine, 1984
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 333 Post Road West

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

  1. Robert Altbaum, M.D.Internal Medicine Physician1285736124
  2. David Baum, M.D.Internal Medicine Physician1437175486
  3. Jill Denowitz, M.D.Internal Medicine Physician1215013941
  4. Nina Karol, M.D.Internal Medicine Physician1548286818

Verify Robert C. Teltser in five checks

  1. 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
  2. 2LicenseActive license and public ordersConnecticut Medical Examining Board
    Search for license 045272
    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

PlainDoctor does not match the HHS-OIG exclusion list to individual records: most entries carry no NPI. Search the OIG exclusion list by name.

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11% fewer Medicare Part D claims than the average internal medicine physician in 2024

2,840 Medicare Part D claims for 182 beneficiaries, against an average of 3,176 among the 108,855 providers of this specialty who prescribed in Part D. Brand-name drugs were 16% of claims. 34 claims were for opioids.

  1. Robert Teltser2,840
  2. Specialty average3,176

Most prescribed

  1. Atorvastatin Calcium221 claims
  2. Amlodipine Besylate166 claims
  3. Escitalopram Oxalate100 claims
  4. Metoprolol Succinate93 claims
  5. Rosuvastatin Calcium91 claims
  6. Lisinopril88 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: $594.83

22 payments; by number, the most common kind was food and beverage; the largest payer was Amgen Inc. The 50,334 providers of this specialty with any payment received $1,303.06 on average. Payments are reported by manufacturers, not by the provider, and are not a sign of wrongdoing.

  1. Robert Teltser$594.83
  2. Specialty average$1,303.06

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. Primary Care OF Westport LLCWestport, CT
  2. Rehabilitation Associates IncFairfield, CT

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

Robert C. Teltser among 2,623 internal medicine physician records in Connecticut

Robert C. Teltser, M.D. is one of 2,623 internal medicine physician records with a practice address in Connecticut. 81% of them appear in a Medicare file (Part D prescribing, MIPS, Open Payments or Medicare group billing); this one does. Its NPI, issued in 2007, is newer than 48% of them.

  • NPI issued2007 · 48% of these records are older, 44% newer
  • In a Medicare fileYes · 81% of these records are
  • In the CMS Doctors and Clinicians fileYes · 63% of these records are
  • Graduated1984 · median 2004 among the 1,646 with a school on file
  • Record last updated2022 · 61% of these records were not updated in five years or more

Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 207R00000X and a Connecticut practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).

23 internal medicine physician records list a practice address in Westport

They are 23 of the 886 NPPES records with a practice address in Westport, and 2,623 internal medicine physician records in Connecticut.

The 8 internal medicine physician records with the nearest ZIP codes

  1. Robert Altbaum, M.D.Westport, CT 068801285736124
  2. David Baum, M.D.Westport, CT 068801437175486
  3. Jill Denowitz, M.D.Westport, CT 068801215013941
  4. Robert Dresdner, M.D.Westport, CT 068801356443204
  5. Samuel Frumkin, M.D.Westport, CT 068801124120043
  6. Jay Horn, M.D.Westport, CT 068801013093731
  7. Nina Karol, M.D.Westport, CT 068801548286818
  8. Anthony Lamarca, MDWestport, CT 068801336105139

Common questions

What is Robert C. Teltser, M.D.'s NPI number?

Robert C. Teltser, M.D.'s National Provider Identifier (NPI) is 1821291675, issued on Jun 8, 2007. An NPI identifies a provider in billing; it is not a license.

Where is Robert C. Teltser, M.D. located?

The NPPES record lists a practice address at 333 Post Road West, Westport, CT, 06880. Phone: (203) 571-3000. Providers update this record themselves, so call before visiting.

How can I verify Robert C. Teltser, M.D.'s license?

NPPES lists Connecticut license number 045272, 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 Robert C. Teltser, M.D. prescribe under Medicare Part D?

In 2024, Robert C. Teltser, M.D. had 2,840 Medicare Part D claims for 182 beneficiaries; the average among internal medicine physician prescribers was 3,176. 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.