JOHN MICHAEL HAYDEK (MD) – Gastroenterology Physician, NPI 1275508095
Gastroenterology Physician
Main info
Doctor Profile
Profile Insights
NPPES metrics only — not quality of care.
401 GASTROENTEROLOGY in TN
Loading map...
Provider Addresses for JOHN MICHAEL HAYDEK (MD)
1311, Dowell Springs Boulevard, Amherst, Knoxville, Knox County, Tennessee, 37909, United States
STE 300
KNOXVILLE, TN 379092454
Phone: (865) 588-5121
Fax: (865) 588-2126
Type: Location
PO BOX 59002
KNOXVILLE, TN 379509002
Phone: (865) 588-5121
Fax: (865) 588-2126
Type: Mailing
NPPES updates history
No NPPES updates recorded for this provider.
Prescription Activity
Loading prescription activity...
Open Payments (CMS)
CMS reports 51 Open Payments records for all available years, with a total value of $883.
Total Amount is formed as General ($883) + Research ($0) + Ownership ($0) = $883.
Last reported payment date: 2024-12-13 • Largest payer in this snapshot: ABBVIE INC. ($704).
Total Amount
$883
General + Research + Ownership
Payments
51
Total payment records
General Amount
$883
General payments
Research Amount
$0
Research funding
Ownership Amount
$0
Ownership interests
Ownership Count
0
Ownership records
Last Payment Date
2024-12-13
Latest reported date
Top Companies
Largest payers in this snapshot
| Company | Amount |
|---|---|
| ABBVIE INC. | $704 |
| Janssen Biotech, Inc. | $46 |
| GlaxoSmithKline, LLC. | $39 |
| AIMMUNE THERAPEUTICS, INC. | $33 |
| Organon LLC | $27 |
Medicare Enrollment & Revalidation
Source: CMS public data · Not endorsed by CMS ·
Educational use only—not medical, billing, or legal advice.
PECOS enrollment status
Participating (accepts Medicare assignment)
Enrollment effective: 2011-03-14
PECOS data refreshed: 2026-05-27
Medicare revalidation (CMS due date list)
Due date not assigned yet
CMS is tracking this Medicare enrollment for revalidation, but has not published a due date.
Enrollment records
1
Earliest due date
Not assigned (TBD)
CMS data updated
2026-06-01
Revalidation progress
- Medicare enrolled
- On CMS revalidation list
- Due date assigned
- Revalidate in PECOS
CMS enrollment records
| Enrollment ID | Type | Specialty | State | Due date |
|---|---|---|---|---|
| I20110314000273 | I | Gastroenterology | TN | TBD |
What to do next
- No action required while the due date shows TBD.
- Check the CMS Revalidation Lookup Tool periodically — CMS updates the list about every 60 days.
- Do not submit a revalidation application in PECOS until CMS publishes a concrete due date.
Prepare CMS-855 application → · Look up this NPI in PECOS → · Verify on CMS PECOS
Medicare Utilization (FFS)
Source: CMS public data · Not endorsed by CMS · Beneficiary counts under 11 are suppressed in source data ·
Educational use only—not medical, billing, or legal advice.
Top Medicare procedures (2023) · refreshed 2026-05-27
| HCPCS | Description | Services | Beneficiaries | Medicare allowed |
|---|---|---|---|---|
| J3380 | Injection, vedolizumab, 1 mg | 24,900 | 35 | $0 |
| J1745 | Injection, infliximab, excludes biosimilar, 10 mg | 1,930 | 17 | $0 |
| 43239 | Biopsy of esophagus, stomach, and/or upper small bowel using a flexible endoscope | 220 | 217 | $0 |
| 99214 | Established patient office or other outpatient visit, 30-39 minutes | 164 | 137 | $0 |
| 45385 | Removal of polyps or growths of large bowel using an endoscope with mechanical snare | 154 | 153 | $0 |
Insurance plans in this area (ZIP 37909)
Loading plans...
Group practice members
| Name | Specialty | State |
|---|---|---|
| P A T H O L O G Y | TX | |
| G A S T R O E N T E R O L O G Y | TX | |
| - | TN | |
| P A T H O L O G Y | TN | |
| Physician Assistant | TN | |
| G A S T R O E N T E R O L O G Y | TN | |
| Physician Assistant | TN | |
| G A S T R O E N T E R O L O G Y | TX | |
| Nurse Practitioner | TN | |
| G A S T R O E N T E R O L O G Y | TN |
Reviews
All reviews are moderated before publication. Reviews reflect users' opinions; we do not verify the accuracy of individual reviews.
No reviews yet. Be the first to share your experience — your opinion helps families compare providers.