Doctor profile · Federal record
Dr. John Tsai, MD
Gastroenterology Physician (CMS: Gastroenterology) · Gastroenterology Physician · Austin, TX
- NPI 1437321791
- Accepts Medicare
- MIPS 79.4 / 100 · 2023
- 25 yrs in practice
- Licensed in 2 states
- Male
- Group practice
- No sanctions
Practice & contact
- Primary practice
-
4310 James Casey St, Ste 4A
Austin, TX 787451251
(512) 448-4588
fax (512) 445-4511 - Mailing address
-
Po Box 10597
Austin, TX 787661597
Credentials & registration
- NPI registered
- March 2008 — 18 yrs on file
- Profile last updated
- February 28, 2017
- Year of graduation
- 2001 — 25 yrs since
- Specialty taxonomy
- 207RG0100X — NUCC code
- State licenses (2)
- Texas #R1466 · Arizona #38154
Federal sanctions & exclusions
No sanctions, exclusions or revocations on file
Checked against OIG LEIE on NPI 1437321791. Last verified May 11, 2026.Medicare procedures · 2023
Top services delivered
Total services
964
Distinct HCPCS
10
Medicare allowed
$127,342
| HCPCS | Description | Services | Patients | Avg allowed | |
|---|---|---|---|---|---|
99213 |
Established patient office or other outpatient visit, 20-29 minutes | 186 | 159 | $90 | |
43239 |
Biopsy of esophagus, stomach, and/or upper small bowel using a flexible endoscope | 172 | 171 | $73 | |
45385 |
Removal of polyps or growths of large bowel using an endoscope with mechanical snare | 157 | 156 | $247 | |
99214 |
Established patient office or other outpatient visit, 30-39 minutes | 111 | 101 | $128 | |
45380 |
Biopsy of large bowel using a flexible endoscope | 72 | 72 | $111 | |
99203 |
New patient office or other outpatient visit, 30-44 minutes | 71 | 71 | $111 | |
99204 |
New patient office or other outpatient visit, 45-59 minutes | 56 | 56 | $165 | |
43249 |
Balloon dilation of esophagus, stomach, and/or upper small bowel using a flexible endoscope, less than 3.0 cm | 37 | 35 | $118 | |
G0105 |
Colorectal cancer screening; colonoscopy on individual at high risk | 34 | 34 | $179 | |
45378 |
Diagnostic exam of large bowel using a flexible endoscope | 25 | 25 | $167 |
In context: peer comparison
Among 21 peers in this city , average services per provider: 53. This provider delivers 18× the peer median.Open Payments
Industry payments received
All-time total
$2,140
Transactions
89
Manufacturers
15
| Payer (manufacturer) | Industry | Txns | Amount |
|---|---|---|---|
| ABBVIE INC. | 17 | $454.97 | |
| PFIZER INC. | 14 | $269.71 | |
| Salix Pharmaceuticals, a division of Bausch Health US, LLC | 14 | $210.50 | |
| Regeneron Healthcare Solutions, Inc. | 6 | $204.61 | |
| Celgene Corporation | 6 | $169.71 | |
| Janssen Biotech, Inc. | 10 | $147.35 | |
| GENZYME CORPORATION | 5 | $137.75 | |
| Janssen Scientific Affairs, LLC | 1 | $117.89 | |
| Lilly USA, LLC | 4 | $101.98 | |
| AIMMUNE THERAPEUTICS, INC. | 4 | $81.84 | |
| IRONWOOD PHARMACEUTICALS, INC | 2 | $53.01 | |
| Ardelyx, Inc. | 2 | $39.22 | |
| Takeda Pharmaceuticals U.S.A., Inc. | 2 | $38.62 | |
| Fresenius Kabi USA, LLC | 1 | $29.36 | |
| ALBIREO PHARMA, INC. | 1 | $23.90 |
By nature of payment
Medicare Part D · 2023
Top prescriptions
Total claims
1,140
Patients
452
Total drug cost
$122,276
| Drug | Type | Claims | Patients | Total cost |
|---|---|---|---|---|
| Pantoprazole Sodium | Generic | 432 | 159 | $8,190 |
| Omeprazole | Generic | 362 | 148 | $6,068 |
| Clenpiq (Sod Picosulf/Mag Ox/Citric Ac) | Brand | 47 | 45 | $8,183 |
| Plenvu (Peg3350/Sod Sul/Nacl/Kcl/Asb/C) | Brand | 46 | 45 | $6,716 |
| Linzess (Linaclotide) | Brand | 37 | 12 | $36,666 |
| Trulance (Plecanatide) | Brand | 29 | 0 | $21,608 |
| Cholestyramine (Cholestyramine (With Sugar)) | Brand | 26 | 12 | $1,947 |
| Budesonide Dr (Budesonide) | Brand | 25 | 0 | $2,227 |
| Ursodiol | Generic | 25 | 0 | $9,175 |
| Ondansetron Odt (Ondansetron) | Brand | 24 | 14 | $907 |
Frequently asked questions
What is Dr. John Tsai's medical specialty?
Dr. John Tsai practices Gastroenterology Physician in Austin, TX.
Where does Dr. John Tsai practice?
Dr. John Tsai practices at 4310 James Casey St, Austin, TX 787451251. Office phone: 5124484588.
What is Dr. John Tsai's NPI?
Dr. John Tsai's National Provider Identifier (NPI) is 1437321791, issued by NPPES.
Does Dr. John Tsai accept Medicare assignment?
Yes. Dr. John Tsai accepts Medicare assignment, meaning Medicare-allowed amounts are accepted as full payment for covered services.
What procedures does Dr. John Tsai commonly perform?
Top Medicare-reported procedures in 2023: Established patient office or other outpatient visit (HCPCS 99213); Biopsy of esophagus, stomach, and/or upper small bowel using a flexible endoscope (HCPCS 43239); Removal of polyps or growths of large bowel using an endoscope with mechanical snare (HCPCS 45385). Source: CMS Medicare Physician & Other Practitioners file.