Provider records sourced from NPPES (CMS National Plan & Provider Enumeration System). Data current as of August 10, 2026.
NPIDirectory

John Michael Haydek, MD

Individual provider Gastroenterology Physician · NPI 1275508095

John Michael Haydek, MD is a Gastroenterology in Knoxville, Tennessee. Graduated from Loyola University of Chicago, Stritch School of Medicine in 1988, 38 years ago. Practices with Gastrointestinal Associates PC, a 33-clinician group and accepts Medicare assignment. Licensed in Tennessee.

Years since qualifying
38
Trained at
Loyola University of Chicago, Stritch School of Medicine
Licensed in
TN
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

1311 Dowell Springs Blvd Ste 300
Knoxville, TN 37909-2454
Phone: (865) 588-5121
Fax: (865) 588-2126
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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 MD27845 (TN)

Record details

NPI number1275508095
Entity typeIndividual (Type 1)
GenderMale
Credentials MD
Sole proprietorNo
NPI enumeratedFebruary 23, 2006
Last updated in NPPESMay 4, 2017

Medicare enrollment

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

Medicare specialtyGASTROENTEROLOGY
Medical schoolLOYOLA UNIVERSITY OF CHICAGO, STRITCH SCHOOL OF MEDICINE
Graduated 1988 (38 years in practice)
Group practice Gastrointestinal Associates Pc — 33 clinicians
Accepts Medicare assignment Yes — accepts the Medicare-approved amount
Practice locations2 on file with Medicare

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