John HaydekMD
Gastroenterology·Knoxville, TN
John Haydek, MD is a Gastroenterology provider in Knoxville, TN affiliated with 4 ambulatory surgery centers in TN, as of July 2026.
- NPI1275508095
- Registered2006
- Centers4
- StateTN
- Class of1988
Case volumes, referral patterns, and payer mix live in DataLily AI Insights.
Ambulatory surgery centers
Centers whose service lines match this provider’s. Affiliations change; verify independently.
- The Endoscopy Center NorthKnoxville, TN · Gastroenterology · 14 on panelView center →
- The Endoscopy CenterKnoxville, TN · Gastroenterology · 24 on panelView center →
- Middlebrook ASC LLCKnoxville, TN · ENT, Gastroenterology · 24 on panelView center →
- Endoscopy Center Of Knoxville LpKnoxville, TN · Gastroenterology · 10 on panelView center →
Education
Education on record as of August 2026.
John Haydek at a glance
- Provider
- John Haydek
- Credential
- MD
- Specialty
- Gastroenterology
- Procedures
- Gastroenterology CPT codes
- Location
- Knoxville, TN
- Medical school
- Loyola University of Chicago, Stritch School of Medicine
- Graduated
- 1988
- NPI registered
- 2006
- NPI
- 1275508095
- Snapshot
- July 2026
Identity, specialty, and affiliations change over time. This is not an endorsement, and not clinical, billing, or legal advice. Providers may request corrections at founders@datalilyai.com. Read the DataLily AI data methodology.
Questions
Where does John Haydek practice?
John Haydek, MD is based in Knoxville, TN and is affiliated with 4 ambulatory surgery centers: The Endoscopy Center North in Knoxville, TN, The Endoscopy Center in Knoxville, TN, Middlebrook ASC LLC in Knoxville, TN, and Endoscopy Center Of Knoxville Lp in Knoxville, TN. Affiliations reflect the current DataLily AI snapshot (July 2026) and can change.
What is John Haydek's NPI number?
John Haydek's National Provider Identifier (NPI) is 1275508095, registered in 2006. Specialty on record: Gastroenterology; credential MD.
Where did John Haydek go to medical school?
John Haydek, MD attended Loyola University of Chicago, Stritch School of Medicine, graduating in 1988.
How many Gastroenterology providers in Tennessee work at ambulatory surgery centers?
121 Gastroenterology surgeons and proceduralists in Tennessee are affiliated with ambulatory surgery centers in DataLily AI's current snapshot, John Haydek among them. The Tennessee Gastroenterology directory lists each one by city with credential, NPI, and center affiliations.
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