Doctor profile · Federal record
Dr. Gregory Shannon, M.D.
Gastroenterology Physician (CMS: Internal Medicine) · Specialist · Specialist · Sugar Land, TX
- NPI 1730148495
- Accepts Medicare
- MIPS 75.0 / 100 · 2023
- 30 yrs in practice
- Licensed in 3 states
- Male
- Group practice
- No sanctions
Practice & contact
- Primary practice
-
17510 W Grand Pkwy S, #220
Sugar Land, TX 774792645
(281) 201-1338
fax (281) 201-1353
Credentials & registration
- NPI registered
- March 2006 — 20 yrs on file
- Profile last updated
- September 26, 2023
- Year of graduation
- 1996 — 30 yrs since
- Specialty taxonomy
- 207RG0100X — NUCC code
- State licenses (3)
- Texas #K7479 · Illinois #036-107804 · North Carolina #2001-1396
Federal sanctions & exclusions
No sanctions, exclusions or revocations on file
Checked against OIG LEIE on NPI 1730148495. Last verified May 11, 2026.Medicare procedures · 2023
Top services delivered
Total services
2,753
Distinct HCPCS
10
Medicare allowed
$197,361
| HCPCS | Description | Services | Patients | Avg allowed | |
|---|---|---|---|---|---|
88305 |
Pathology examination of tissue using a microscope, intermediate complexity | 1,204 | 226 | $33 | |
88312 |
Special stained specimen slides to identify organisms including interpretation and report | 458 | 83 | $82 | |
88313 |
Special stained specimen slides to examine tissue including interpretation and report | 421 | 82 | $66 | |
45380 |
Biopsy of large bowel using a flexible endoscope | 229 | 227 | $189 | |
43239 |
Biopsy of esophagus, stomach, and/or upper small bowel using a flexible endoscope | 113 | 110 | $77 | |
99213 |
Established patient office or other outpatient visit, 20-29 minutes | 112 | 103 | $85 | |
99203 |
New patient office or other outpatient visit, 30-44 minutes | 74 | 74 | $108 | |
99214 |
Established patient office or other outpatient visit, 30-39 minutes | 58 | 52 | $123 | |
45385 |
Removal of polyps or growths of large bowel using an endoscope with mechanical snare | 48 | 48 | $240 | |
43248 |
Insertion of guide wire with dilation of esophagus using a flexible endoscope | 36 | 33 | $124 |
In context: peer comparison
Among 6 peers in this city , average services per provider: 112. This provider delivers 25× the peer median.Open Payments
Industry payments received
All-time total
$1,330
Transactions
63
Manufacturers
12
| Payer (manufacturer) | Industry | Txns | Amount |
|---|---|---|---|
| ABBVIE INC. | 19 | $348.22 | |
| AIMMUNE THERAPEUTICS, INC. | 8 | $197.12 | |
| IRONWOOD PHARMACEUTICALS, INC | 10 | $159.75 | |
| Lilly USA, LLC | 5 | $154.13 | |
| Takeda Pharmaceuticals U.S.A., Inc. | 5 | $114.70 | |
| Salix Pharmaceuticals, a division of Bausch Health US, LLC | 5 | $91.66 | |
| Celgene Corporation | 3 | $66.96 | |
| EVOKE PHARMA, INC. | 3 | $58.11 | |
| Ardelyx, Inc. | 2 | $50.27 | |
| Phathom Pharmaceuticals, Inc. | 1 | $36.23 | |
| Janssen Biotech, Inc. | 1 | $26.36 | |
| Merck Sharp & Dohme LLC | 1 | $26.31 |
By nature of payment
Medicare Part D · 2023
Top prescriptions
Total claims
2,082
Patients
1,197
Total drug cost
$186,255
| Drug | Type | Claims | Patients | Total cost |
|---|---|---|---|---|
| Omeprazole | Generic | 449 | 169 | $6,452 |
| Peg 3350-Electrolyte (Sodium Chloride/Nahco3/Kcl/Peg) | Brand | 447 | 420 | $11,099 |
| Famotidine | Generic | 387 | 147 | $7,292 |
| Clenpiq (Sod Picosulf/Mag Ox/Citric Ac) | Brand | 154 | 150 | $27,360 |
| Sucralfate | Generic | 140 | 58 | $19,314 |
| Linzess (Linaclotide) | Brand | 87 | 32 | $78,646 |
| Sod Sulf-Potass Sulf-Mag Sulf (Sodium, Potassium,mag Sulfates) | Brand | 81 | 73 | $6,296 |
| Pantoprazole Sodium | Generic | 77 | 29 | $1,794 |
| Gavilyte-G (Peg3350/Sod Sulf,bicarb,cl/Kcl) | Brand | 58 | 58 | $960 |
| Mesalamine | Generic | 41 | 12 | $19,343 |
Hospital affiliations
Frequently asked questions
What is Dr. Gregory Shannon's medical specialty?
Dr. Gregory Shannon practices Gastroenterology Physician in Sugar Land, TX.
Where does Dr. Gregory Shannon practice?
Dr. Gregory Shannon practices at 17510 W Grand Pkwy S, Sugar Land, TX 774792645. Office phone: 2812011338.
What is Dr. Gregory Shannon's NPI?
Dr. Gregory Shannon's National Provider Identifier (NPI) is 1730148495, issued by NPPES.
Does Dr. Gregory Shannon accept Medicare assignment?
Yes. Dr. Gregory Shannon accepts Medicare assignment, meaning Medicare-allowed amounts are accepted as full payment for covered services.
What procedures does Dr. Gregory Shannon commonly perform?
Top Medicare-reported procedures in 2023: Pathology examination of tissue using a microscope, intermediate complexity (HCPCS 88305); Special stained specimen slides to identify organisms including interpretation and report (HCPCS 88312); Special stained specimen slides to examine tissue including interpretation and report (HCPCS 88313). Source: CMS Medicare Physician & Other Practitioners file.