Physician Profile
John M. Haydek, MD
Unclaimed ProfileAbout Dr. Haydek
John M. Haydek, MD practices gastroenterology in Knoxville, TN. John is a 1988 graduate of Loyola University of Chicago, Stritch School of Medicine. Medicare claims data shows John provided 1,023 services to 963 patients. The services billed most often include biopsy of esophagus, stomach, and/or upper small bowel using a flexible endoscope, removal of polyps or growths of large bowel using an endoscope with mechanical snare, and established patient office or other outpatient visit with moderate level of decision making, if using time, 30 minutes or more.
Summarised automatically from public NPI registry and CMS Medicare data. Not written or reviewed by this provider. Claim this profile to replace it.
Education & Training
Specialty
Credentials & Licensing
License numbers are what the provider reported to NPPES when the NPI was issued or updated. NPPES does not verify licensure; confirm current standing with the state licensing board.
Contact Information
- (865) 588-5121
- Email not available
Practice Locations
1311 DOWELL SPRINGS BLVD STE 300
Knoxville, TN 37909
Conditions Commonly Evaluated or Treated
Within Gastroenterology generally. Availability varies by clinician, training and location — this profile has not been claimed, so nothing here is a personal claim by the provider.
Conditions
Most searched conditions
- Acid reflux
- Celiac disease
- Crohn's disease
- Hemorrhoids
- IBS
- Swallowing difficulties
- Ulcerative colitis
Biliary and pancreas
Colon and anorectal
- Anal fissure
- Colon cancer
- Colon polyps
- Lower gastrointestinal bleeding
Esophagus and swallowing
Functional bowel and motility
Liver
- Ascites
- Autoimmune hepatitis
- Cirrhosis
- Fatty liver disease
- Hemochromatosis
- Hepatitis B
- Hepatitis C
- Portal hypertension
Stomach and duodenum
Bowel & Colon
Digestive Symptoms
Gallbladder & Bile Ducts
Procedures & services
Most searched procedures
Lower endoscopy
Upper endoscopy
Capsule and physiology testing
Diagnostic Testing
Liver procedures
- Esophageal variceal banding
- Liver elastography
- Paracentesis
Treatments
Procedures Most Often Billed to Medicare
1,023 services · 963 patients · 17 distinct codes
| Procedure | Type | Code | Services |
|---|---|---|---|
| Biopsy of esophagus, stomach, and/or upper small bowel using a flexible endoscope | Procedure | 43239 |
222 |
| Removal of polyps or growths of large bowel using an endoscope with mechanical snare | Procedure | 45385 |
208 |
| Insertion of guide wire with dilation of esophagus using a flexible endoscope | Procedure | 43248 |
56 |
| Destruction of polyp or growth of esophagus using a flexible endoscope | Procedure | 43229 |
28 |
| Destruction of polyp or growth of esophagus, stomach, and/or upper small bowel using a flexible endoscope | Procedure | 43270 |
23 |
| Biopsy of esophagus using a flexible endoscope through mouth | Procedure | 43202 |
21 |
| Biopsy of large bowel using a flexible endoscope | Procedure | 45380 |
20 |
| Diagnostic exam of lower portion of large bowel using a flexible endoscope | Procedure | 45330 |
13 |
| Diagnostic exam of large bowel using a flexible endoscope | Procedure | 45378 |
12 |
| Measurement of hydrogen in breath to test for stomach and bowel symptoms | Treatment | 91065 |
21 |
Source: CMS Medicare public data. Shows how often procedures were billed — not quality of care or patient satisfaction.
Related providers
Connections drawn from the registry and from what providers have told us. A link here is not a referral or an endorsement.
Other gastroenterologists at this location 8
Same specialty, same street address — most likely the same department or group.
Related specialists at this location 1
Clinically related specialties at the same address — the people this provider most likely works alongside.
Also at this address 4
Providers at the same street address. Each files their own registry entry, so a shared practice often appears under several different names.
More connections — 30 related providers in 4 groups
Other gastroenterologists in Knoxville 6
Same specialty, same city.
Trained at Loyola University of Chicago, Stritch School of Medicine 8
Other providers in the same specialty who trained at the same institution.
Class of 1988 at Loyola University of Chicago, Stritch School of Medicine 8
Providers who graduated from the same medical school in the same year.
Also performs Biopsy of esophagus, stomach, and/or upper small bowel using a flexible endoscope 8
Providers in TN who bill this service to Medicare most often.
Common questions
What is Dr. Haydek's specialty?
Dr. Haydek is a gastroenterologist in Knoxville, TN. That is the designation recorded for this NPI in the federal registry, where it is listed as “Gastroenterology”.
NPI registry
Where can I find Dr. Haydek?
Dr. Haydek is listed at 1311 Dowell Springs Blvd Ste 300, Knoxville, TN 37909. Addresses come from the NPI registry and can lag a move, so confirm before travelling.
NPI registry
How do I contact Dr. Haydek?
The number on file is (865) 588-5121. Guide.md cannot book appointments or pass on messages — please call the office directly.
NPI registry
What is the NPI for Dr. Haydek?
Dr. Haydek's National Provider Identifier is 1275508095. It is issued by the Centers for Medicare & Medicaid Services and is unique and permanent — it does not change if they move practice.
NPI registry
What is Dr. Haydek's medical education?
Dr. Haydek attended Loyola University of Chicago, Stritch School of Medicine, graduating in 1988. This comes from the CMS National Downloadable File.
CMS public data
How much experience does Dr. Haydek have?
Dr. Haydek has 38 years experience. Calculated from a graduation year of 1988, reported in the CMS National Downloadable File.
CMS public data
What is Dr. Haydek known for?
According to Medicare billing data, Dr. Haydek performs procedures including biopsy of esophagus, stomach, and/or upper small bowel using a flexible endoscope, removal of polyps or growths of large bowel using an endoscope with mechanical snare and insertion of guide wire with dilation of esophagus using a flexible endoscope; provides treatments such as measurement of hydrogen in breath to test for stomach and bowel symptoms and administration of chemotherapy into vein, 1 hour or less, alongside routine visits and testing. This reflects Medicare patients only and is billing volume, not a measure of quality.
Medicare claims
Is Dr. Haydek's profile verified?
Not yet. This profile is built from public federal data and has not been confirmed by Dr. Haydek. If this is you, claiming it is free.
Guide.md
Provider data sourced from the NPPES NPI Registry and CMS public datasets. Information is provided for reference and is not medical advice.