Michael S. Karasik, MD
Gastroenterology Physician · Hartford, CT
Michael S. Karasik, MD is a gastroenterology physician with a practice address in Hartford, Connecticut, and NPI 1346344967, issued on Sep 12, 2006. Check the license (Connecticut 037761, as entered in NPPES) on the Connecticut Medical Examining Board; the Medicare figures below come from public CMS files.
- Name
- Michael S. Karasik
- Credential
- MD
- Primary taxonomy
- Gastroenterology Physician 207RG0100X
- License number
- 037761 CT
Self-reported in NPPES; status is on the state search - Practice location
- 85 Seymour St, Hartford, CT 06106
- Phone
- (860) 246-2571
- Enumerated
- Sep 12, 2006
- Record last updated
- Apr 29, 2011 (not updated in 15 years: call before relying on the address or phone)
- Fax
- (860) 246-3691
- Medicaid ID
- 001377614 CT
- Medicare enrollment
- Enrolled (PECOS I20100330000126); accepts Medicare assignment
- Medical or professional school
- University Of Connecticut School Of Medicine, 1986
- Telehealth
- Offers telehealth (CMS)
- Entity
- Type 1 · individual
8 nearest gastroenterology physician records → All 336 in Connecticut → Look up another NPI →
Also registered at 85 Seymour St
A shared address usually means a shared clinic or building; it does not show who employs whom.
- Aderonke Adeniji, M.D.Internal Medicine Physician1649552159
- Philip AllmendingerVascular Surgery Physician1861492241
- James Alvarez, PHYSICIAN ASSISTANTPhysician Assistant1407853575
- Joseph Anquillare, M.D.Geriatric Medicine (Internal Medicine) Physician1316043045
- Samuel Anyatonwu, MDInternal Medicine Physician1023028933
- Alan Armstrong, P.A.Physician Assistant1790761898
Verify Michael S. Karasik in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersConnecticut Medical Examining Board
Search for license 037761Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
28% fewer Medicare Part D claims than the average gastroenterology physician in 2024
582 Medicare Part D claims for 254 beneficiaries, against an average of 811 among the 16,445 providers of this specialty who prescribed in Part D. Brand-name drugs were 15% of claims.
Most prescribed
- Pantoprazole Sodium108 claims
- Sod Sulf-Potass Sulf-Mag Sulf106 claims
- Omeprazole53 claims
- Famotidine35 claims
- Levofloxacin30 claims
- Dexlansoprazole Dr17 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.
Source: CMS Quality Payment Program, MIPS performance year 2023, group reporting; category weights for 2023 (qpp.cms.gov).
Industry payments in 2024: $992.29
42 payments; by number, the most common kind was food and beverage; the largest payer was Takeda Pharmaceuticals U.S.A., 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.
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
- Connecticut GI PLLCHartford, CT
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
Michael S. Karasik among 336 gastroenterology physician records in Connecticut
Michael S. Karasik, 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
- Graduated1986 · median 2001 among the 255 with a school on file
- Record last updated2011 · 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.
All 336 in Connecticut → Every provider in Hartford → Gastroenterology Physician nationwide →
The 8 gastroenterology physician records with the nearest ZIP codes
- David Chaletsky, MDHartford, CT 061061316193055
- Teresa Da Cunha, MDHartford, CT 061061346806841
- Michael Einstein, M.D.Hartford, CT 061061659339901
- Michael Golioto, MDHartford, CT 061061811091432
- Maria Johnson, M.D.Hartford, CT 061061033300728
- Kristin Marcous, PAHartford, CT 061061801015854
- Jeffry Nestler, MDHartford, CT 061061275637886
- Nihal Patel, MDHartford, CT 061061720375090
Common questions
What is Michael S. Karasik, MD's NPI number?
Michael S. Karasik, MD's National Provider Identifier (NPI) is 1346344967, issued on Sep 12, 2006. An NPI identifies a provider in billing; it is not a license.
Where is Michael S. Karasik, MD located?
The NPPES record lists a practice address at 85 Seymour St, Hartford, CT, 06106. Phone: (860) 246-2571. Providers update this record themselves, so call before visiting.
How can I verify Michael S. Karasik, MD's license?
NPPES lists Connecticut license number 037761, 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 Michael S. Karasik, MD prescribe under Medicare Part D?
In 2024, Michael S. Karasik, MD had 582 Medicare Part D claims for 254 beneficiaries; the average among gastroenterology physician prescribers was 811. Part D covers Medicare prescriptions only.
What is Michael S. Karasik, 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.