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MICHAEL S KARASIK MD
NPI 1346344967
Internal Medicine - Gastroenterology in Hartford, CT

Active since September 12, 2006PECOS EnrolledAccepts Medicare Assignment
85.07/100
CMS Quality Rating
85 SEYMOUR ST, SUITE 1000, HARTFORD, CT 06106(860) 246-2571(860) 246-3691 Get Directions Write a Review

NPPES record last updated: April 29, 2011. Verified against the NPPES registry weekly; last sync: October 18, 2026.

About Michael S Karasik Md NPPES

Official registry information on file with the National Plan and Provider Enumeration System.

MICHAEL S KARASIK MD (NPI 1346344967) is an individual gastroenterology provider in Hartford, Connecticut, licensed in Connecticut (037761) and active in the NPI registry since September 2006. He is enrolled in Medicare PECOS and is a graduate of University Of Connecticut School Of Medicine (1986).

NPPES Registry Identity

NPI1346344967
Entity TypeIndividualMale
Primary Taxonomy207RG0100X
Provider Legal NameMICHAEL S KARASIKCredential: MD
Location Address85 SEYMOUR ST, SUITE 1000Hartford, CT 06106-5501
Mailing Address2139 Silas Deane HwyRocky Hill, CT 06067-2336 · (860) 257-4131 · Fax (860) 257-4519
Phone(860) 246-2571
Fax(860) 246-3691
Sole ProprietorNo
Medical School CMSUniversity Of Connecticut School Of MedicineGraduated 1986
Enumeration DateSeptember 12, 2006
Last NPPES UpdateApril 29, 2011
✔ NPI 1346344967 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses

★ Primary SpecialtyInternal Medicine · GastroenterologyAllopathic & Osteopathic Physicians
Taxonomy Code207RG0100X
License✔ Licensed in CT · 037761
Definition
An internist who specializes in diagnosis and treatment of diseases of the digestive organs including the stomach, bowels, liver and gallbladder. This specialist treats conditions such as abdominal pain, ulcers, diarrhea, cancer and jaundice and performs complex diagnostic and therapeutic procedures using endoscopes to visualize internal organs.
85 SEYMOUR ST, Hartford, CT 06106
Open in Google Maps ↗

Other Identifiers 3

Medicaid001377614CT
Medicare ID-Type Unspecified100000293CT
Medicare UPINC43843

Accepted Insurance

The full list of accepted plans is on the Insurance tab. Issuers include Anthem Blue Cross and Blue Shield.Insurance ›

Medicare Participation & PECOS CMS

Medicare enrollment, assignment, billing reassignment, and ordering and referring status from CMS.

Medicare Enrollment Status

✔

Enrolled in Medicare and accepts Medicare assignment

Michael S Karasik Md is registered in PECOS and agrees to accept the Medicare-approved amount as full payment. Medicare patients are not billed beyond the standard deductible and coinsurance.

PECOS PAC ID3274554159
PECOS Enrollment IDI20100330000126
Eligible to Order & Refer✔ Part B Labs & Imaging✔ Durable Medical Equipment✔ Home Health Agency✔ Power Mobility DevicesPer the CMS Ordering and Referring file. Eligibility means Medicare pays claims that this provider orders or refers for these categories.

Medicare Billing Reassignments

3

Medicare enrollment records show Michael Karasik reassigns Medicare billing to 3 organizations. Each organization bills Medicare for the services this provider delivers there; the nearest is listed first.

Connecticut Gi PLLC
Same address
Gastroenterology
85 SEYMOUR ST, 1000
Hartford, CT 06106
  • Reassigned Medicare billing, Connecticut enrollment
  • 417 clinicians in this Medicare group
NPI 1023124625 (860) 246-2571
Hartford Healthcare Medical Group Specialists, PLLC
Same address
Surgery
85 SEYMOUR ST STE 415
Hartford, CT 06106
  • Reassigned Medicare billing, Connecticut enrollment
  • 1,921 clinicians in this Medicare group
NPI 1023584216 (860) 246-2071
Hartford Hospital
0.1 mi
General Acute Care Hospital
80 SEYMOUR ST
Hartford, CT 06102
  • Reassigned Medicare billing, Connecticut enrollment
  • 1,333 clinicians in this Medicare group
NPI 1770696643 (860) 696-6010

Source: CMS Revalidation Reassignment List, October 2026 release. Reassignment records can lag staffing changes; confirm a current affiliation with the organization.

Areas of Expertise CMS Part B claims 7

Services this provider delivered to Medicare fee-for-service patients, from the CMS Medicare utilization data. Higher counts generally reflect more experience with a service; care delivered outside Medicare is not included.

Established patient office or other outpatient visit with moderate level of decision making, if using time, 30 minutes or more 99214
This is a routine check-up for patients who have previously visited our clinic. It involves a comprehensive review of your health and any ongoing treatments. The consultation lasts between 30-39 minutes, allowing enough time to discuss any concerns.
41 services37 patients
Biopsy of esophagus, stomach, and/or upper small bowel using a flexible endoscope 43239
This procedure involves using a thin, flexible tube with a light and camera, known as an endoscope, to examine the esophagus, stomach, and upper part of the small intestine. Small tissue samples are taken for further examination to help diagnose various conditions.
29 services29 patients
Removal of polyps or growths of large bowel using an endoscope with mechanical snare 45385
This procedure involves using a thin, flexible tube called an endoscope to examine the large bowel. If any abnormal growths or polyps are found, a tool called a mechanical snare is used to remove them. This is a common method to prevent potential health issues.
29 services29 patients
Ultrasound exam of esophagus, stomach, and/or upper small bowel using a flexible endoscope 43259
This procedure involves a flexible tube with a camera, called an endoscope, inserted through your mouth to examine your esophagus, stomach, and upper small bowel. An ultrasound device on the endoscope helps get detailed images. It's safe and helps diagnose various conditions.
28 services28 patients
Diagnostic exam of esophagus, stomach, and/or upper small bowel using a flexible endoscope 43235
This procedure, known as an upper endoscopy, involves inserting a thin, flexible tube with a camera down the throat to examine the esophagus, stomach, and upper small bowel. It helps diagnose conditions like ulcers or inflammation.
14 services14 patients
Colorectal cancer screening; colonoscopy on individual not meeting criteria for high risk G0121
Colorectal cancer screening, such as a colonoscopy, is a preventive measure to detect early signs of cancer in the large intestine. For individuals not at high risk, it's typically recommended at age 50. A small, flexible tube with a camera is used to examine your colon. It's a safe, effective way to catch issues early.
12 services12 patients

Physician Visit Costs CMS claims · ZIP area

Typical Medicare office-visit costs in the 06106 ZIP code area, from fee-for-service claims. These are area statistics, not this provider’s prices; actual charges vary by service and coverage.

New Patient
$138.84 typical visit price
range $60.82 – $183.10
Typical copayment $34.71 (range $15.20 – $45.77)
Most-billed visit code 99204
Established Patient
$106.68 typical visit price
range $19.76 – $149.26
Typical copayment $26.67 (range $4.94 – $37.31)
Most-billed visit code 99214
Amounts reflect what Medicare beneficiaries in this ZIP area are typically charged for office visits. Patients with other coverage should check their individual plans.

Medicare Quality Performance CMS QPP · MIPS

Performance in the CMS Quality Payment Program: the MIPS final score across four weighted categories, and the individual quality measures reported to Medicare.

85.07/100
MIPS Final ScoreMerit-based Incentive Payment System · CMS Quality Payment Program
Scored as part of a group practice
Quality89.7
Promoting Interoperability83
Improvement Activities40
Cost68.33

Reported Quality Measures

Colorectal Cancer Screening
Percentage of adults 50-75 years of age who had appropriate screening for colorectal cancer
50%222 patients3/55-star benchmark: 85%
Documentation of Current Medications in the Medical Record
Percentage of visits for patients aged 18 years and older for which the eligible professional or eligible clinician attests to documenting a list of current medications using all immediate resources available on the date of the encounter.
100%541 patients5/55-star benchmark: 100%
e-Prescribing
At least one permissible prescription written by the MIPS eligible clinician is queried for a drug formulary and transmitted electronically using certified EHR technology.
97%850 patients4/55-star benchmark: 99%
Health Information Exchange
The MIPS eligible clinician that transitions or refers their patient to another setting of care or health care clinician (1) uses CEHRT to create a summary of care record; and (2) electronically transmits such summary to a receiving health care clinician for…
1%170 patients1/55-star benchmark: 88%
Medication Reconciliation
The MIPS eligible clinician performs medication reconciliation for at least one transition of care in which the patient is transitioned into the care of the MIPS eligible clinician.
97%325 patients4/55-star benchmark: 100%
Patient-Specific Education
The MIPS eligible clinician must use clinically relevant information from CEHRT to identify patient-specific educational resources and provide access to those materials to at least one unique patient seen by the MIPS eligible clinician.
15%570 patients1/55-star benchmark: 97%
Preventive Care and Screening: Body Mass Index (BMI) Screening and Follow-Up Plan
Percentage of patients aged 18 years and older with a BMI documented during the current encounter or during the previous twelve months AND with a BMI outside of normal parameters, a follow-up plan is documented during the encounter or during the previous…
36%384 patients2/55-star benchmark: 97%
Provide Patient Access
At least one patient seen by the MIPS eligible clinician during the performance period is provided timely access to view online, download, and transmit to a third party their health information subject to the MIPS eligible clinician's discretion to withhold…
67%570 patients3/55-star benchmark: 100%
Secure Messaging
For at least one unique patient seen by the MIPS eligible clinician during the performance period, a secure message was sent using the electronic messaging function of CEHRT to the patient (or the patient-authorized representative), or in response to a secure…
16%570 patients1/55-star benchmark: 89%
Use of High-Risk Medications in the Elderly
Percentage of patients 65 years of age and older who were ordered high-risk medications. Two rates are submitted. 1) Percentage of patients who were ordered at least one high-risk medication.
Lower rates are better for this measure.
Patients 2+: 0% · 170 patients
1%170 patients4/55-star benchmark: 100%
View, Download, or Transmit (VDT)
At least one patient seen by the MIPS eligible clinician during the performance period (or patient-authorized representative) views, downloads or transmits their health information to a third party during the performance period.
21%570 patients
Providers report different measures because they deliver different services; reporting more or less information is not a reflection of quality. Star ratings appear only where CMS assigned them.

Other Providers at the Same Location NPPES 20

Providers registered at the same practice address, or within the immediate area, according to the NPPES registry.

LEIGH MAE CABRAL DMD
Dentist (General Practice)
85 SEYMOUR ST, SUITE 922
HARTFORD, CT 06106
Capitol Planning Region (860) 518-5185
DR. JOHN P. OPALACZ M.D.
Radiology (Diagnostic Radiology)
85 SEYMOUR ST, SUITE 200
HARTFORD, CT 06106
Capitol Planning Region (860) 289-3375
JAMES JOSEPH GALLAGHER JR. MD
Surgery (Vascular Surgery)
85 SEYMOUR ST, SUITE 409
HARTFORD, CT 06106
Capitol Planning Region (860) 522-4158
DR. SAMUEL K ANYATONWU MD
Internal Medicine
85 SEYMOUR ST, SUITE 1009
HARTFORD, CT 06106
Capitol Planning Region (860) 728-6674
JOHN RUSSOMANNO MD
Internal Medicine (Pulmonary Disease)
85 SEYMOUR ST, SUITE 923
HARTFORD, CT 06106
Capitol Planning Region (860) 247-1876
CONNECTICUT GI PLLC
Internal Medicine (Gastroenterology)
85 SEYMOUR ST, 1000
HARTFORD, CT 06106
Capitol Planning Region (860) 246-2571
ISABEL NIP
Student in an Organized Health Care Education/Training Program
85 SEYMOUR ST
HARTFORD, CT 06106
Capitol Planning Region (860) 972-5107
EMILY PERROTTI RN
Registered Nurse
85 SEYMOUR ST
HARTFORD, CT 06106
Capitol Planning Region (860) 972-0200

Frequently Asked Questions NPPES & CMS

Common questions about this NPI record, answered from the official NPPES registry and CMS datasets shown on this page.

What is Michael Karasik's NPI number?

The NPI number for Michael Karasik is 1346344967. It was assigned to this individual provider in the NPPES registry on September 12, 2006.

Where is Michael Karasik located?

Michael Karasik practices at 85 Seymour St Suite 1000, Hartford, CT 06106. The listed phone number is (860) 246-2571.

What is Michael Karasik's specialty?

The primary specialty registered for this NPI is Internal Medicine, specializing in Gastroenterology, with taxonomy code 207RG0100X.

Is Michael Karasik enrolled in Medicare?

Yes. Michael Karasik is registered in the Medicare PECOS system and accepts Medicare assignment, which means accepting the Medicare-approved amount as payment in full for covered services.

Which organizations bill Medicare for Michael Karasik's services?

According to the CMS Revalidation Reassignment List (October 2026 release), Michael Karasik reassigns Medicare benefits to 3 organizations: Connecticut Gi PLLC (Hartford, CT), Hartford Healthcare Medical Group Specialists, PLLC (Hartford, CT) and Hartford Hospital (Hartford, CT). Each reassignment is filed with Medicare on form CMS-855R, signed by both the clinician and the organization, and lets the organization bill Medicare and receive payment for Michael Karasik's services. Reassignment records can lag staffing changes; confirm current arrangements with the organization.

What insurance does Michael Karasik accept?

Health plans from Anthem Blue Cross and Blue Shield list Michael Karasik as in-network in at least one marketplace plan. Coverage varies by plan and year; verify with the insurer or the provider before a visit.

When was this NPI record last updated?

The NPPES record for Michael Karasik was last updated on April 29, 2011. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 15 years ago. If this record has changed at CMS more recently, you can request an on-demand re-check against the live CMS registry, directly from this page.