KEVIN TROY MARKS (MD) – Gastroenterology Physician, NPI 1679585228
Gastroenterology Physician
Main info
Doctor Profile
Profile Insights
NPPES metrics only — not quality of care.
1,498 GASTROENTEROLOGY in TX
Provider Addresses for KEVIN TROY MARKS (MD)
521 W GRAND PKWY S
KATY, TX 774948284
Phone: (281) 392-0425
Fax: (281) 392-0250
Type: Location
Katy Med Arts Center, West Grand Parkway North, Harris County, Texas, 77450, United States
SUITE 350
KATY, TX 774932710
Phone: (281) 392-0425
Fax: (281) 392-0250
Type: Mailing
NPPES updates history
No NPPES updates recorded for this provider.
Prescription Activity
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Open Payments (CMS)
CMS reports 114 Open Payments records for all available years, with a total value of $2,560.
Total Amount is formed as General ($2,560) + Research ($0) + Ownership ($0) = $2,560.
Last reported payment date: 2024-12-17 • Largest payer in this snapshot: ABBVIE INC. ($827).
Total Amount
$2,560
General + Research + Ownership
Payments
114
Total payment records
General Amount
$2,560
General payments
Research Amount
$0
Research funding
Ownership Amount
$0
Ownership interests
Ownership Count
0
Ownership records
Last Payment Date
2024-12-17
Latest reported date
Top Companies
Largest payers in this snapshot
| Company | Amount |
|---|---|
| ABBVIE INC. | $827 |
| Janssen Biotech, Inc. | $529 |
| Takeda Pharmaceuticals U.S.A., Inc. | $386 |
| PFIZER INC. | $108 |
| Celltrion USA Inc. | $97 |
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: 2007-01-12
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 |
|---|---|---|---|---|
| I20070112000114 | I | Gastroenterology | TX | 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 |
|---|---|---|---|---|
| 99214 | Established patient office or other outpatient visit, 30-39 minutes | 211 | 122 | $0 |
| 99213 | Established patient office or other outpatient visit, 20-29 minutes | 74 | 60 | $0 |
| 99204 | New patient office or other outpatient visit, 45-59 minutes | 37 | 37 | $0 |
| 45380 | Biopsy of large bowel using a flexible endoscope | 34 | 34 | $0 |
| 99203 | New patient office or other outpatient visit, 30-44 minutes | 26 | 26 | $0 |
Insurance plans in this area (ZIP 77494)
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Provider's Procedures
| Specialty | Practice State | HCPCS Code | Description | Service Count | Beneficiary Count |
|---|---|---|---|---|---|
| GASTROENTEROLOGY | TX | 43235 | Diagnostic examination of esophagus, stomach, and/or upper small bowel using an endoscope | 21 | 21 |
| GASTROENTEROLOGY | TX | 45378 | Diagnostic examination of large bowel using an endoscope | 34 | 34 |
| GASTROENTEROLOGY | TX | 45385 | Removal of polyps or growths of large bowel using an endoscope | 19 | 19 |
Group practice members
| Name | Specialty | State |
|---|---|---|
| - | TX | |
| Physician Assistant | GA |
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