Doctor profile · Federal record
Dr. Kevin Marks, MD
Gastroenterology Physician (CMS: Gastroenterology) · Katy, TX
- NPI 1679585228
- Accepts Medicare
- 26 yrs in practice
- Male
- Group practice
- No sanctions
Practice & contact
- Primary practice
-
521 W Grand Pkwy S
Katy, TX 774948284
(281) 392-0425
fax (281) 392-0250 - Mailing address
-
1331 W Grand Pkwy N, Suite 350
Katy, TX 774932710
Credentials & registration
- NPI registered
- August 2006 — 20 yrs on file
- Profile last updated
- December 21, 2024
- Year of graduation
- 2000 — 26 yrs since
- Specialty taxonomy
- 207RG0100X — NUCC code
- State license (1)
- Texas #L6514
Federal sanctions & exclusions
No sanctions, exclusions or revocations on file
Checked against OIG LEIE on NPI 1679585228. Last verified May 11, 2026.Medicare procedures · 2023
Top services delivered
Total services
420
Distinct HCPCS
7
Medicare allowed
$51,046
| HCPCS | Description | Services | Patients | Avg allowed | |
|---|---|---|---|---|---|
99214 |
Established patient office or other outpatient visit, 30-39 minutes | 211 | 122 | $118 | |
99213 |
Established patient office or other outpatient visit, 20-29 minutes | 74 | 60 | $83 | |
99204 |
New patient office or other outpatient visit, 45-59 minutes | 37 | 37 | $158 | |
45380 |
Biopsy of large bowel using a flexible endoscope | 34 | 34 | $197 | |
99203 |
New patient office or other outpatient visit, 30-44 minutes | 26 | 26 | $108 | |
43239 |
Biopsy of esophagus, stomach, and/or upper small bowel using a flexible endoscope | 23 | 23 | $80 | |
G0121 |
Colorectal cancer screening; colonoscopy on individual not meeting criteria for high risk | 15 | 15 | $186 |
In context: peer comparison
Among 5 peers in Katy Gastroenterology Physician, average services per provider: 108. This provider delivers 3.9× the peer median.Open Payments
Industry payments received
All-time total
$1,473
Transactions
71
Manufacturers
15
| Payer (manufacturer) | Industry | Txns | Amount |
|---|---|---|---|
| Abbvie INC. | 23 | $342.50 | |
| Janssen Biotech, INC. | 13 | $277.52 | |
| Takeda Pharmaceuticals U.S.A., INC. | 8 | $229.62 | |
| Pfizer INC. | 6 | $107.83 | |
| Celltrion USA INC. | 5 | $96.58 | |
| Regeneron Healthcare Solutions, INC. | 2 | $64.53 | |
| Merck Sharp & Dohme LLC | 2 | $56.06 | |
| Lilly USA, LLC | 2 | $54.12 | |
| Intercept Pharmaceuticals, INC. | 2 | $44.32 | |
| Salix Pharmaceuticals, A Division of Bausch Health US, LLC | 2 | $40.50 | |
| RedHill Biopharma INC. | 2 | $35.47 | |
| Medtronic, INC. | 1 | $30.41 | |
| Phathom Pharmaceuticals, INC. | 1 | $24.59 | |
| Genzyme Corporation | 1 | $23.82 | |
| Ardelyx, INC. | 1 | $23.58 |
By nature of payment
Medicare Part D · 2023
Top prescriptions
Total claims
283
Patients
81
Total drug cost
$35,718
| Drug | Type | Claims | Patients | Total cost |
|---|---|---|---|---|
| Pantoprazole Sodium | Generic | 136 | 55 | $2,063 |
| Omeprazole | Generic | 40 | 15 | $833 |
| Esomeprazole Magnesium | Generic | 28 | 0 | $1,172 |
| Linzess (Linaclotide) | Brand | 24 | 11 | $21,730 |
| Famotidine | Generic | 17 | 0 | $238 |
| Dexlansoprazole Dr (Dexlansoprazole) | Brand | 14 | 0 | $8,895 |
| Ondansetron Odt (Ondansetron) | Brand | 12 | 0 | $521 |
| Sucralfate | Generic | 12 | 0 | $266 |
Hospital affiliations
Frequently asked questions
What is Dr. Kevin Marks's medical specialty?
Dr. Kevin Marks practices Gastroenterology Physician in Katy, TX.
Where does Dr. Kevin Marks practice?
Dr. Kevin Marks practices at 521 W Grand Pkwy S, Katy, TX 774948284. Office phone: 2813920425.
What is Dr. Kevin Marks's NPI?
Dr. Kevin Marks's National Provider Identifier (NPI) is 1679585228, issued by NPPES.
Does Dr. Kevin Marks accept Medicare assignment?
Yes. Dr. Kevin Marks accepts Medicare assignment, meaning Medicare-allowed amounts are accepted as full payment for covered services.
What procedures does Dr. Kevin Marks commonly perform?
Top Medicare-reported procedures in 2023: Established patient office or other outpatient visit (HCPCS 99214); Established patient office or other outpatient visit (HCPCS 99213); New patient office or other outpatient visit (HCPCS 99204). Source: CMS Medicare Physician & Other Practitioners file.