Provider records sourced from NPPES (CMS National Plan & Provider Enumeration System). Data current as of August 10, 2026.
NPIDirectory

John K Tsai, MD

Individual provider Gastroenterology Physician · NPI 1437321791

John K Tsai, MD is a Gastroenterology in Austin, Texas. Graduated from Northwestern University Feinberg Medical School in 2001, 25 years ago. Practices with Austin Gastroenterology PLLC, a 79-clinician group, accepts Medicare assignment and offers telehealth. Licensed in Arizona and Texas.

Years since qualifying
25
Trained at
Northwestern University Feinberg Medical School
Licensed in
AZ, TX
In the registry since
2008
Specialties on file
2
What do these letters mean?
MD — Doctor of Medicine
A physician who completed allopathic medical school.

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Practice location Address checks out

4310 James Casey St Ste 4A
Austin, TX 78745-1251
Phone: (512) 448-4588
Fax: (512) 445-4511
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Pin is approximate — placed at the ZIP-code centre, not the exact door.

Specialties & licences

Gastroenterology Physician (primary) Taxonomy 207RG0100X · Licence R1466 (TX)
Gastroenterology Physician Taxonomy 207RG0100X · Licence 38154 (AZ)

Record details

NPI number1437321791
Entity typeIndividual (Type 1)
GenderMale
Credentials MD
Sole proprietorNo
NPI enumeratedMarch 27, 2008
Last updated in NPPESFebruary 28, 2017
Mailing addressPo Box 10597, Austin, TX 78766-1597

Medicare enrollment

From the CMS Doctors & Clinicians file — this clinician is enrolled in Medicare.

Medicare specialtyGASTROENTEROLOGY
Medical schoolNORTHWESTERN UNIVERSITY FEINBERG MEDICAL SCHOOL
Graduated 2001 (25 years in practice)
Group practice Austin Gastroenterology Pllc — 79 clinicians
Accepts Medicare assignment Yes — accepts the Medicare-approved amount
TelehealthOffers telehealth services
Practice locations7 on file with Medicare

Other providers in Austin