GREGORY M KEELEN (DO) – Emergency Medicine Physician, NPI 1811905227
Emergency Medicine Physician
Main info
Doctor Profile
Profile Insights
NPPES metrics only — not quality of care.
4,050 EMERGENCY MEDICINE in TX
Provider Addresses for GREGORY M KEELEN (DO)
5016 US HWY 75
DENISON, TX 750204584
Phone: (214) 433-9602
Fax: (972) 390-9950
Type: Mailing
5016 US-75
TMC EMERGENCY DEPARTMENT
DENISON, TX 75020
Phone: (214) 433-9602
Fax: (214) 433-9602
Type: Location
Methodist Dallas Medical Center, 1441, North Beckley Avenue, Dallas, TX, Dallas, Dallas County, Texas, 75203, United States
DALLAS, TX 752031201
Phone: (214) 942-5733
Fax: (214) 942-6115
Type: Mailing
NPPES updates history
No NPPES updates recorded for this provider.
Prescription Activity
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Open Payments (CMS)
CMS reports 5 Open Payments records for all available years, with a total value of $387.
Total Amount is formed as General ($387) + Research ($0) + Ownership ($0) = $387.
Last reported payment date: 2024-10-09 • Largest payer in this snapshot: Inari Medical, Inc. ($170).
Total Amount
$387
General + Research + Ownership
Payments
5
Total payment records
General Amount
$387
General payments
Research Amount
$0
Research funding
Ownership Amount
$0
Ownership interests
Ownership Count
0
Ownership records
Last Payment Date
2024-10-09
Latest reported date
Top Companies
Largest payers in this snapshot
| Company | Amount |
|---|---|
| Inari Medical, Inc. | $170 |
| Medtronic, Inc. | $135 |
| ABIOMED | $83 |
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: 2018-05-23
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 |
|---|---|---|---|---|
| I20061027000198 | I | Emergency Medicine | TX | TBD |
| I20180523000847 | I | Emergency Medicine | OK | 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 |
|---|---|---|---|---|
| 99285 | Emergency department visit with high level of medical decision making | 325 | 308 | $0 |
| 99291 | Critical care, first 30-74 minutes | 121 | 121 | $0 |
| 99284 | Emergency department visit with moderate level of medical decision making | 118 | 117 | $0 |
| 99283 | Emergency department visit with low level of medical decision making | 11 | 11 | $0 |
Insurance plans in this area (ZIP 75020)
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Group practice members
| Name | Specialty | State |
|---|---|---|
| Nurse Practitioner | TX | |
| Nurse Practitioner | TX | |
| Emergency Medicine, Internal Medicine, Hospitalist | TX | |
| Nurse Practitioner | TX | |
| Emergency Medicine | OK | |
| Emergency Medicine | MS | |
| Family Practice, Emergency Medicine | TX | |
| Nurse Practitioner | TX | |
| Emergency Medicine | TX | |
| Nurse Practitioner | TX |
Reviews
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