Doctor profile · Federal record
Dr. Tuanh Tonnu, MD
Gastroenterology Physician (CMS: Gastroenterology) · Internal Medicine Physician · Gaithersburg, MD
- NPI 1083723878
- Accepts Medicare
- MIPS 81.8 / 100 · 2023
- 36 yrs in practice
- Female
- Solo practice
- No sanctions
Practice & contact
- Primary practice
-
9057 Shady Grove CT
Gaithersburg, MD 20877
(301) 721-1614
fax (301) 721-1624
Credentials & registration
- NPI registered
- August 2006 — 20 yrs on file
- Profile last updated
- August 2, 2016
- Year of graduation
- 1990 — 36 yrs since
- Specialty taxonomy
- 207RG0100X — NUCC code
- State license (1)
- Maryland #D47295
- Medicaid
- MD #695400600
Federal sanctions & exclusions
No sanctions, exclusions or revocations on file
Checked against OIG LEIE on NPI 1083723878. Last verified May 11, 2026.Medicare procedures · 2023
Top services delivered
Total services
1,151
Distinct HCPCS
10
Medicare allowed
$144,756
| HCPCS | Description | Services | Patients | Avg allowed | |
|---|---|---|---|---|---|
99213 |
Established patient office or other outpatient visit, 20-29 minutes | 348 | 214 | $102 | |
99214 |
Established patient office or other outpatient visit, 30-39 minutes | 147 | 115 | $144 | |
43239 |
Biopsy of esophagus, stomach, and/or upper small bowel using a flexible endoscope | 122 | 119 | $109 | |
G0439 |
Annual wellness visit, includes a personalized prevention plan of service (pps), subsequent visit | 97 | 97 | $147 | |
45380 |
Biopsy of large bowel using a flexible endoscope | 94 | 94 | $159 | |
99203 |
New patient office or other outpatient visit, 30-44 minutes | 94 | 94 | $126 | |
93000 |
Routine electrocardiogram (ecg) using at least 12 leads with interpretation and report | 82 | 78 | $17 | |
99204 |
New patient office or other outpatient visit, 45-59 minutes | 58 | 58 | $183 | |
45385 |
Removal of polyps or growths of large bowel using an endoscope with mechanical snare | 36 | 36 | $276 | |
G0121 |
Colorectal cancer screening; colonoscopy on individual not meeting criteria for high risk | 23 | 23 | $205 |
In context: peer comparison
Among 1 peers in Gaithersburg Gastroenterology Physician, average services per provider: 88. This provider delivers 13× the peer median.Open Payments
Industry payments received
All-time total
$383
Transactions
18
Manufacturers
6
| Payer (manufacturer) | Industry | Txns | Amount |
|---|---|---|---|
| Gilead Sciences, INC. | 12 | $269.53 | |
| Regeneron Healthcare Solutions, INC. | 2 | $38.30 | |
| Abbvie INC. | 1 | $31.73 | |
| Phathom Pharmaceuticals, INC. | 1 | $15.36 | |
| CapsoVision, INC. | 1 | $13.93 | |
| Madrigal Pharmaceuticals | 1 | $13.66 |
By nature of payment
Medicare Part D · 2023
Top prescriptions
Total claims
1,424
Patients
469
Total drug cost
$112,198
| Drug | Type | Claims | Patients | Total cost |
|---|---|---|---|---|
| Amlodipine Besylate | Generic | 278 | 75 | $4,167 |
| Omeprazole | Generic | 166 | 62 | $3,265 |
| Atorvastatin Calcium | Generic | 143 | 42 | $2,559 |
| Metformin Hcl | Generic | 125 | 29 | $2,355 |
| Losartan Potassium | Generic | 115 | 27 | $2,535 |
| Famotidine | Generic | 91 | 29 | $1,640 |
| Simvastatin | Generic | 85 | 25 | $1,746 |
| Lovastatin | Generic | 62 | 12 | $1,052 |
| Lisinopril | Generic | 59 | 19 | $1,132 |
| Sod Sulf-Potass Sulf-Mag Sulf (Sodium, Potassium,Mag Sulfates) | Brand | 59 | 57 | $5,172 |
Frequently asked questions
What is Dr. Tuanh Tonnu's medical specialty?
Dr. Tuanh Tonnu practices Gastroenterology Physician in Gaithersburg, MD.
Where does Dr. Tuanh Tonnu practice?
Dr. Tuanh Tonnu practices at 9057 Shady Grove CT, Gaithersburg, MD 20877. Office phone: 3017211614.
What is Dr. Tuanh Tonnu's NPI?
Dr. Tuanh Tonnu's National Provider Identifier (NPI) is 1083723878, issued by NPPES.
Does Dr. Tuanh Tonnu accept Medicare assignment?
Yes. Dr. Tuanh Tonnu accepts Medicare assignment, meaning Medicare-allowed amounts are accepted as full payment for covered services.
What procedures does Dr. Tuanh Tonnu commonly perform?
Top Medicare-reported procedures in 2023: Established patient office or other outpatient visit (HCPCS 99213); Established patient office or other outpatient visit (HCPCS 99214); Biopsy of esophagus, stomach, and/or upper small bowel using a flexible endoscope (HCPCS 43239). Source: CMS Medicare Physician & Other Practitioners file.