THOMAS BAK (MD) – Transplant Surgery Physician, NPI 1457445785
Transplant Surgery Physician
Main info
Doctor Profile
Profile Insights
NPPES metrics only — not quality of care.
756 GENERAL SURGERY in CO
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Provider Addresses for THOMAS BAK (MD)
PO BOX 110429
AURORA, CO 800420429
Phone: (303) 493-7000
Type: Mailing
University of Colorado Hospital, 12605, East 16th Avenue, Aurora, Adams County, Colorado, 80045, United States
AURORA, CO 800452545
Phone: (720) 848-0000
Type: Location
NPPES updates history
No NPPES updates recorded for this provider.
Prescription Activity
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Open Payments (CMS)
CMS reports 1 Open Payments records for all available years, with a total value of $149.
Total Amount is formed as General ($149) + Research ($0) + Ownership ($0) = $149.
Last reported payment date: 2023-08-02 • Largest payer in this snapshot: Ethicon US, LLC ($149).
Total Amount
$149
General + Research + Ownership
Payments
1
Total payment records
General Amount
$149
General payments
Research Amount
$0
Research funding
Ownership Amount
$0
Ownership interests
Ownership Count
0
Ownership records
Last Payment Date
2023-08-02
Latest reported date
Top Companies
Largest payers in this snapshot
| Company | Amount |
|---|---|
| Ethicon US, LLC | $149 |
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: 2019-03-21
PECOS data refreshed: 2026-05-27
Medicare revalidation (CMS due date list)
Due date not assigned yet
CMS is tracking 2 Medicare enrollment records; no due dates published yet.
Enrollment records
2
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 |
|---|---|---|---|---|
| I20040805000813 | I | General Surgery | CO | TBD |
| I20190321001909 | I | General Surgery | MT | 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.
No Medicare fee-for-service utilization data available for this provider in our database.
Insurance plans in this area (ZIP 80042)
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Group practice members
| Name | Specialty | State |
|---|---|---|
| - | CO | |
| Family Practice | CO | |
| Advanced Heart Failure And Transplant Cardiology, Cardiac Electrophysiology, Cardiovascular Disease (Cardiology), Internal Medicine | CO | |
| Emergency Medicine | CO | |
| Emergency Medicine | CO | |
| - | CO | |
| - | CO | |
| Emergency Medicine | CO | |
| - | CO | |
| - | CO |
Reviews
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