Doctor profile · Federal record
Dr. Thomas Liu, M.D.
Gastroenterology Physician (CMS: Gastroenterology) · Internal Medicine Physician · Gastroenterology Physician · Exeter, NH
- NPI 1245270255
- Accepts Medicare
- 26 yrs in practice
- Licensed in 2 states
- Male
- Group practice
- No sanctions
Practice & contact
Operates at 3 locations .
- Primary practice
-
3 Alumni Dr Ste 201
Exeter, NH 038332122
(603) 772-5528
fax (603) 777-1296 - Additional location
-
125 Parker Hill Avenue, Fremont Smith 570
Boston, MA 02120
(617) 754-5930
fax (617) 739-1253 - Additional location
-
255 Low St Ste 201
Newburyport, MA 019503596
(978) 465-4622
fax (978) 465-4111 - Mailing address
-
7 Holland Way Fl 1
Exeter, NH 038332937
Credentials & registration
- NPI registered
- June 2006 — 20 yrs on file
- Profile last updated
- January 21, 2025
- Year of graduation
- 2000 — 26 yrs since
- Specialty taxonomy
- 207RG0100X — NUCC code
- State licenses (2)
- Massachusetts #235151 · New York #240169
Federal sanctions & exclusions
No sanctions, exclusions or revocations on file
Checked against OIG LEIE on NPI 1245270255. Last verified May 11, 2026.Medicare procedures · 2023
Top services delivered
Total services
363
Distinct HCPCS
9
Medicare allowed
$56,086
| HCPCS | Description | Services | Patients | Avg allowed | |
|---|---|---|---|---|---|
45385 |
Removal of polyps or growths of large bowel using an endoscope with mechanical snare | 88 | 87 | $252 | |
99213 |
Established patient office or other outpatient visit, 20-29 minutes | 70 | 58 | $92 | |
43239 |
Biopsy of esophagus, stomach, and/or upper small bowel using a flexible endoscope | 53 | 53 | $102 | |
99214 |
Established patient office or other outpatient visit, 30-39 minutes | 44 | 37 | $129 | |
G0105 |
Colorectal cancer screening; colonoscopy on individual at high risk | 34 | 34 | $177 | |
45380 |
Biopsy of large bowel using a flexible endoscope | 22 | 22 | $142 | |
99222 |
Initial hospital care with straightforward or low-level medical decision making, if using time, at least 55 minutes | 20 | 20 | $131 | |
99203 |
New patient office or other outpatient visit, 30-44 minutes | 18 | 18 | $115 | |
G0121 |
Colorectal cancer screening; colonoscopy on individual not meeting criteria for high risk | 14 | 14 | $184 |
In context: peer comparison
Among 2 peers in Exeter Gastroenterology Physician, average services per provider: 52. This provider delivers 7.0× the peer median.Open Payments
Industry payments received
All-time total
$211
Transactions
8
Manufacturers
5
| Payer (manufacturer) | Industry | Txns | Amount |
|---|---|---|---|
| Salix Pharmaceuticals, A Division of Bausch Health US, LLC | 4 | $88.16 | |
| Astellas US LLC | 1 | $44.02 | |
| Abbvie INC. | 1 | $31.50 | |
| Regeneron Healthcare Solutions, INC. | 1 | $26.02 | |
| Pfizer INC. | 1 | $21.29 |
By nature of payment
Medicare Part D · 2023
Top prescriptions
Total claims
375
Patients
65
Total drug cost
$49,742
| Drug | Type | Claims | Patients | Total cost |
|---|---|---|---|---|
| Omeprazole | Generic | 215 | 65 | $4,919 |
| Sodium Chloride (0.9 % Sodium Chloride) | Brand | 27 | 0 | $1,177 |
| Linzess (Linaclotide) | Brand | 25 | 0 | $17,110 |
| Pantoprazole Sodium | Generic | 23 | 0 | $298 |
| Amitiza (Lubiprostone) | Brand | 21 | 0 | $7,851 |
| Esomeprazole Magnesium | Generic | 14 | 0 | $657 |
| Sulfasalazine Dr (Sulfasalazine) | Brand | 14 | 0 | $442 |
| Budesonide Ec (Budesonide) | Brand | 12 | 0 | $14,805 |
| Dexlansoprazole Dr (Dexlansoprazole) | Brand | 12 | 0 | $2,420 |
| Spironolactone | Generic | 12 | 0 | $63 |
Hospital affiliations
Frequently asked questions
What is Dr. Thomas Liu's medical specialty?
Dr. Thomas Liu practices Gastroenterology Physician in Exeter, NH.
Where does Dr. Thomas Liu practice?
Dr. Thomas Liu practices at 3 Alumni Dr Ste 201, Exeter, NH 038332122. Office phone: 6037725528.
What is Dr. Thomas Liu's NPI?
Dr. Thomas Liu's National Provider Identifier (NPI) is 1245270255, issued by NPPES.
Does Dr. Thomas Liu accept Medicare assignment?
Yes. Dr. Thomas Liu accepts Medicare assignment, meaning Medicare-allowed amounts are accepted as full payment for covered services.
What procedures does Dr. Thomas Liu commonly perform?
Top Medicare-reported procedures in 2023: Removal of polyps or growths of large bowel using an endoscope with mechanical snare (HCPCS 45385); Established patient office or other outpatient visit (HCPCS 99213); Biopsy of esophagus, stomach, and/or upper small bowel using a flexible endoscope (HCPCS 43239). Source: CMS Medicare Physician & Other Practitioners file.