NPPES file of Aug 9, 2026

Daniel Paul Stupak, M.D.

Gastroenterology Physician · Trumbull, CT

Daniel Paul Stupak, M.D. is a gastroenterology physician with a practice address in Trumbull, Connecticut, and NPI 1669664314, issued on Aug 16, 2007. Check the license (Connecticut 045783, 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
1669664314
Name
Daniel Paul Stupak
Credential
M.D.
Primary taxonomy
Gastroenterology Physician 207RG0100X
License numbers
045783 CT
245703 NY
Self-reported in NPPES; status is on the state search
Practice location
115 Technology Dr Unit B106, Trumbull, CT 06611
Phone
(203) 452-1411
Enumerated
Aug 16, 2007
Record last updated
Aug 6, 2013 (not updated in 13 years: call before relying on the address or phone)
Fax
(203) 452-1412
Medicare enrollment
Enrolled (PECOS I20110524000452); accepts Medicare assignment
Medical or professional school
Albert Einstein College Of Medicine Of Yeshiva University, 2004
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 115 Technology Dr Unit B106

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

  1. John Napolitano, PA-CPhysician Assistant1679538862
  2. Krysta Schaefer, BCBA, MS, LBABehavior Analyst1164938403

Verify Daniel Paul Stupak in five checks

  1. 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
  2. 2LicenseActive license and public ordersConnecticut Medical Examining Board
    Search for license 045783
    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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43% more Medicare Part D claims than the average gastroenterology physician in 2024

1,162 Medicare Part D claims for 336 beneficiaries, against an average of 811 among the 16,445 providers of this specialty who prescribed in Part D. Brand-name drugs were 29% of claims.

  1. Daniel Stupak1,162
  2. Specialty average811

Most prescribed

  1. Omeprazole314 claims
  2. Linzess145 claims
  3. Pantoprazole Sodium117 claims
  4. Dicyclomine Hcl64 claims
  5. Famotidine60 claims
  6. Sod Sulf-Potass Sulf-Mag Sulf52 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: $11,160.45

150 payments; by number, the most common kind was food and beverage; the largest payer was Phathom Pharmaceuticals, 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. Daniel Stupak$11,160
  2. Specialty average$5,016

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. Connecticut GI PLLCHartford, 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).

Gastroenterology Physician providers in Connecticut

There are 336 gastroenterology physician records in Connecticut.

Other gastroenterology physician records in Connecticut

  1. Alexander Abadir, MDNorwalk, CT1811429699
  2. Abera Abay, M.D.Norwich, CT1861489585
  3. Clara Abraham, MDNew Haven, CT1629139456
  4. Charles Adelmann, M.D.Norwalk, CT1861436511
  5. Anant Agarwalla, M.D.Wallingford, CT1326458589
  6. Badr Al Bawardy, MDNew Haven, CT1104111509
  7. Jamil Alexis, MDStamford, CT1164927968
  8. Rabab Oun Ali Anwar Ali, MBBSNew Haven, CT1124580949
  9. Pietro Andres, M.D.Stratford, CT1588607386
  10. Chioma Anjou, M.D.Torrington, CT1821358870

Common questions

What is Daniel Paul Stupak, M.D.'s NPI number?

Daniel Paul Stupak, M.D.'s National Provider Identifier (NPI) is 1669664314, issued on Aug 16, 2007. An NPI identifies a provider in billing; it is not a license.

Where is Daniel Paul Stupak, M.D. located?

The NPPES record lists a practice address at 115 Technology Dr Unit B106, Trumbull, CT, 06611. Phone: (203) 452-1411. Providers update this record themselves, so call before visiting.

How can I verify Daniel Paul Stupak, M.D.'s license?

NPPES lists Connecticut license number 045783, 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 Daniel Paul Stupak, M.D. prescribe under Medicare Part D?

In 2024, Daniel Paul Stupak, M.D. had 1,162 Medicare Part D claims for 336 beneficiaries; the average among gastroenterology physician prescribers was 811. Part D covers Medicare prescriptions only.

What is Daniel Paul Stupak, M.D.'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.