Provider records sourced from NPPES (CMS National Plan & Provider Enumeration System). Data current as of October 4, 2026.
NPIDirectory

Dr. John Birk, MD

Individual provider Gastroenterology Physician · NPI 1609801547

Dr. John Birk, MD practises Gastroenterology in Farmington, Connecticut. Graduated from Icahn School of Medicine at Mount Sinai in 1986, 40 years ago. Practices with University of Connecticut Health Center, a 628-clinician group and accepts Medicare assignment. Licensed in Connecticut.

Years since qualifying
40
Trained at
Icahn School of Medicine at Mount Sinai
Licensed in
CT
In the registry since
2006
What do these letters mean?
MD — Doctor of Medicine
A physician who completed allopathic medical school.

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Practice location Address checks out

263 Farmington Ave Gastroenterology Associates
Farmington, CT 06030-0001
Phone: (860) 679-3238
Fax: (860) 679-1217
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Pin is approximate — placed at the ZIP-code centre, not the exact door.

Specialties & licences

Gastroenterology Physician (primary) Taxonomy 207RG0100X · Licence 046228 (CT)

Record details

NPI number1609801547
Entity typeIndividual (Type 1)
GenderMale
Credentials MD
Sole proprietorNo
NPI enumeratedJuly 11, 2006
Last updated in NPPESSeptember 28, 2022

Medicare enrollment

From the CMS Doctors & Clinicians file — this clinician is enrolled in Medicare.

Medicare specialtyGASTROENTEROLOGY
Also practisesINTERNAL MEDICINE
Medical schoolICAHN SCHOOL OF MEDICINE AT MOUNT SINAI
Graduated 1986 (40 years in practice)
Group practice University Of Connecticut Health Center — 628 clinicians
Accepts Medicare assignment Yes — accepts the Medicare-approved amount
Practice locations2 on file with Medicare

Procedures

From CMS Care Compare, which counts the procedures a clinician billed to Original Medicare and Medicare Advantage over a recent 12-month period. CMS reports a fixed list of common procedures, so this is not everything the clinician does. Counts of 10 or fewer are given as a range, because CMS withholds small numbers.

Upper gastrointestinal (GI) endoscopy for acid reflux 67 times · 69th percentile
Colonoscopy 18 times · 46th percentile

The percentile compares how often this clinician performed the procedure with other clinicians who performed it, as CMS calculates it. It measures volume, not outcomes or skill.

Medicare patients and services, 2024

From the CMS Medicare Physician & Other Practitioners file for calendar year 2024. It counts Original Medicare patients only, so a practice that mostly sees Medicare Advantage or privately insured patients looks smaller here than it is.

Medicare patients123
Services billed 197 a service is one billed item, such as a visit, a test or a procedure
Average patient age75

Dollar amounts are not shown. What Medicare pays a practice is gross billings, before staff, premises and tax and including the cost of any drugs it administers, so it is not what a clinician earns.

Practises at

Facilities the CMS Facility Affiliation file lists for this clinician.

  • John Dempsey Hospital Of The University Of Connect Hospital · Farmington, CT

Colleagues at University of Connecticut Health Center

Clinicians the CMS Doctors & Clinicians file lists under the same group practice. CMS counts 628 clinicians in the practice; 12 are shown here.

Other providers in Farmington