NPPES file of Aug 9, 2026

Robert Dettmer, MD

Gastroenterology Physician · Stamford, CT

Robert Dettmer, MD is a gastroenterology physician with a practice address in Stamford, Connecticut, and NPI 1679648281, issued on Nov 21, 2006. Check the license (Connecticut 038509, 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
1679648281
Name
Robert Dettmer
Credential
MD
Primary taxonomy
Gastroenterology Physician 207RG0100X
License number
038509 CT
Self-reported in NPPES; status is on the state search
Practice location
32 Strawberry Hill CT, Stamford, CT 06902
Phone
(203) 348-5355
Enumerated
Nov 21, 2006
Record last updated
Jul 8, 2007 (not updated in 19 years: call before relying on the address or phone)
Medicare enrollment
Enrolled (PECOS I20040602000293); accepts Medicare assignment
Medical or professional school
Albert Einstein College Of Medicine Of Yeshiva University, 1994
Telehealth
Offers telehealth (CMS)
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 32 Strawberry Hill CT

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

  1. Rodrigo Acosta, M.D.Family Medicine Physician1023102092
  2. Raghav Aggarwal, MDInternal Medicine Physician1093244378
  3. Carol Baird, CRNPFamily Nurse Practitioner1932251634
  4. Genie Ball, PA-CSurgical Physician Assistant1841475126
  5. Henry Beecher, M.D.Gastroenterology Physician1396949582
  6. Melissa Bertuzzi, FNP-BCFamily Nurse Practitioner1780067835

Verify Robert Dettmer in five checks

  1. 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
  2. 2LicenseActive license and public ordersConnecticut Medical Examining Board
    Search for license 038509
    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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37% fewer Medicare Part D claims than the average gastroenterology physician in 2024

509 Medicare Part D claims for 149 beneficiaries, against an average of 811 among the 16,445 providers of this specialty who prescribed in Part D.

  1. Robert Dettmer509
  2. Specialty average811

Most prescribed

  1. Omeprazole73 claims
  2. Famotidine56 claims
  3. Dexlansoprazole Dr51 claims
  4. Pantoprazole Sodium50 claims
  5. Mesalamine22 claims
  6. Prednisone21 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): 85.1 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 score89.7
  2. Costout of 100 · 30%68.3
  3. Promoting interoperabilityout of 100 · 25%83.0
  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: $3,359.43

147 payments; by number, the most common kind was food and beverage; the largest payer was Abbvie Inc. The 13,350 providers of this specialty with any payment received $5,015.95 on average. Payments are reported by manufacturers, not by the provider, and are not a sign of wrongdoing.

  1. Robert Dettmer$3,359.43
  2. Specialty average$5,015.95

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. Connecticut GI PLLCWallingford, CT

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

Robert Dettmer among 336 gastroenterology physician records in Connecticut

Robert Dettmer, MD is one of 336 gastroenterology physician records with a practice address in Connecticut. 86% 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 15% of them.

  • NPI issued2006 · 15% of these records are older, 49% newer
  • In a Medicare fileYes · 86% of these records are
  • In the CMS Doctors and Clinicians fileYes · 76% of these records are
  • Graduated1994 · median 2001 among the 255 with a school on file
  • Record last updated2007 · 69% of these records were not updated in five years or more

Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 207RG0100X and a Connecticut practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).

Gastroenterology Physician providers in Connecticut

There are 336 gastroenterology physician records in Connecticut.

The 8 gastroenterology physician records with the nearest ZIP codes

  1. Jamil Alexis, MDStamford, CT 069021164927968
  2. Henry Beecher, M.D.Stamford, CT 069021396949582
  3. Suma Magge, MDStamford, CT 069021619134392
  4. Robert Plansky, MDStamford, CT 069021780635888
  5. Frederick Rozenshteyn, MDStamford, CT 069021609309558
  6. Amy Smithline, MDStamford, CT 069021538234240
  7. Gregory WagnerStamford, CT 069021215342423
  8. Stuart Waldstreicher, M.DStamford, CT 069021114913894

Common questions

What is Robert Dettmer, MD's NPI number?

Robert Dettmer, MD's National Provider Identifier (NPI) is 1679648281, issued on Nov 21, 2006. An NPI identifies a provider in billing; it is not a license.

Where is Robert Dettmer, MD located?

The NPPES record lists a practice address at 32 Strawberry Hill CT, Stamford, CT, 06902. Phone: (203) 348-5355. Providers update this record themselves, so call before visiting.

How can I verify Robert Dettmer, MD's license?

NPPES lists Connecticut license number 038509, 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 Dettmer, MD prescribe under Medicare Part D?

In 2024, Robert Dettmer, MD had 509 Medicare Part D claims for 149 beneficiaries; the average among gastroenterology physician prescribers was 811. Part D covers Medicare prescriptions only.

What is Robert Dettmer, MD's MIPS final score?

The 2023 MIPS final score is 85.1 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.