JOHN K TSAI MD
NPI 1437321791
Internal Medicine - Gastroenterology in Austin, TX

Active since March 27, 2008PECOS EnrolledAccepts Medicare Assignment
79.43/100
CMS Quality Rating
4310 JAMES CASEY ST, STE 4A, AUSTIN, TX 78745(512) 448-4588(512) 445-4511 Get Directions Write a Review

NPPES record last updated: February 28, 2017. Verified against the NPPES registry weekly; last sync: August 02, 2026.

About John K Tsai Md NPPES

Official registry information on file with the National Plan and Provider Enumeration System.

JOHN K TSAI MD (NPI 1437321791) is an individual gastroenterology provider in Austin, Texas, licensed in Texas (R1466) and active in the NPI registry since March 2008. He is enrolled in Medicare PECOS, is affiliated with St David's South Austin Medical Center, and is a graduate of Northwestern University Feinberg Medical School (2001).

NPPES Registry Identity

NPI1437321791
Entity TypeIndividualMale
Primary Taxonomy207RG0100X
Provider Legal NameJOHN K TSAICredential: MD
Location Address4310 JAMES CASEY ST, STE 4AAustin, TX 78745-1251
Mailing AddressPo Box 10597Austin, TX 78766-1597 · (512) 485-5889 · Fax (512) 420-0397
Fax(512) 445-4511
Sole ProprietorNo
Medical School CMSNorthwestern University Feinberg Medical SchoolGraduated 2001
Enumeration DateMarch 27, 2008
Last NPPES UpdateFebruary 28, 2017
NPI 1437321791 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses

Primary SpecialtyInternal Medicine · GastroenterologyAllopathic & Osteopathic Physicians
Taxonomy Code207RG0100X
Licenses Licensed in TX · R1466 Licensed in AZ · 38154
Definition
An internist who specializes in diagnosis and treatment of diseases of the digestive organs including the stomach, bowels, liver and gallbladder. This specialist treats conditions such as abdominal pain, ulcers, diarrhea, cancer and jaundice and performs complex diagnostic and therapeutic procedures using endoscopes to visualize internal organs.
4310 JAMES CASEY ST, Austin, TX 78745

Other Identifiers 2

Medicare PIN558176ZWM0TX
Medicare PIN558176YQYYTX

Medicare Participation & PECOS CMS

Medicare enrollment, assignment, and ordering and referring status from the CMS PECOS system.

Medicare Enrollment Status

Enrolled in Medicare and accepts Medicare assignment

John K Tsai Md is registered in PECOS and agrees to accept the Medicare-approved amount as full payment. Medicare patients are not billed beyond the standard deductible and coinsurance.

PECOS PAC ID8527138536
PECOS Enrollment IDI20170228000241
Eligible to Order & Refer Part B Labs & Imaging Durable Medical Equipment Home Health Agency Power Mobility DevicesPer the CMS Ordering and Referring file. Eligibility means Medicare pays claims that this provider orders or refers for these categories.

Areas of Expertise CMS Part B claims 11

Services this provider delivered to Medicare fee-for-service patients, from the CMS Medicare utilization data. Higher counts generally reflect more experience with a service; care delivered outside Medicare is not included.

Removal of polyps or growths of large bowel using an endoscope with mechanical snare 45385
This procedure involves using a thin, flexible tube called an endoscope to examine the large bowel. If any abnormal growths or polyps are found, a tool called a mechanical snare is used to remove them. This is a common method to prevent potential health issues.
175 services174 patients
Biopsy of esophagus, stomach, and/or upper small bowel using a flexible endoscope 43239
This procedure involves using a thin, flexible tube with a light and camera, known as an endoscope, to examine the esophagus, stomach, and upper part of the small intestine. Small tissue samples are taken for further examination to help diagnose various conditions.
174 services171 patients
Established patient office or other outpatient visit with low level od decision making, if using time, 20 minutes or more 99213
This is a routine visit for patients who have already been seen by the healthcare provider. During this approximately 20-29 minute appointment, your health status will be evaluated and any necessary treatments or tests will be discussed. It's a chance to address any health concerns you may have.
172 services146 patients
Established patient office or other outpatient visit with moderate level of decision making, if using time, 30 minutes or more 99214
This is a routine check-up for patients who have previously visited our clinic. It involves a comprehensive review of your health and any ongoing treatments. The consultation lasts between 30-39 minutes, allowing enough time to discuss any concerns.
162 services145 patients
New patient office or other outpatient visit with low level of medical decision making, if using time, 30 minutes or more 99203
This service involves an initial office or outpatient visit for a new patient. The healthcare professional will spend 30-44 minutes understanding your health history, current issues, and discussing possible treatment plans. It's a comprehensive evaluation to start your healthcare journey.
82 services82 patients
New patient office or other outpatient visit with moderate level of medical decision making, if using time, 45 minutes or more 99204
This is a first-time office or outpatient visit lasting between 45-59 minutes. The healthcare provider evaluates your health, discusses your medical history, and may suggest further tests or treatments. It's an opportunity to ask questions and understand your health better.
79 services79 patients

Hospital Affiliations CMS Care Compare

Hospitals where this provider delivers care, identified from recent Medicare claims and place-of-service records.

St David's South Austin Medical Center

Acute Care Hospitals · Austin, TX
5/5 CMS rating
OwnershipProprietary
CMS Certification Number450713
Location901 West Ben White BlvdAustin, TX 78704 · Travis County
Emergency services Birthing friendly

Physician Visit Costs CMS claims · ZIP area

Typical Medicare office-visit costs in the 78745 ZIP code area, from fee-for-service claims. These are area statistics, not this provider’s prices; actual charges vary by service and coverage.

New Patient
$131.95 typical visit price
range $57.88 – $174.00
Typical copayment $32.98 (range $14.47 – $43.50)
Most-billed visit code 99204
Established Patient
$101.65 typical visit price
range $18.88 – $142.23
Typical copayment $25.41 (range $4.72 – $35.55)
Most-billed visit code 99214
Amounts reflect what Medicare beneficiaries in this ZIP area are typically charged for office visits. Patients with other coverage should check their individual plans.

Medicare Quality Performance CMS QPP · MIPS

Performance in the CMS Quality Payment Program: the MIPS final score across four weighted categories, and the individual quality measures reported to Medicare.

79.43/100
MIPS Final ScoreMerit-based Incentive Payment System · CMS Quality Payment Program
Scored as part of a group practice
Quality52.61
Promoting Interoperability100
Improvement Activities40
Cost78.84

Other Providers at the Same Location NPPES 20

Providers registered at the same practice address, or within the immediate area, according to the NPPES registry.

Clinic/Center (Ambulatory Surgical)
4310 JAMES CASEY ST, 4B
AUSTIN, TX 78745
Internal Medicine (Gastroenterology)
4310 JAMES CASEY ST, SUITE 4A
AUSTIN, TX 78745
Internal Medicine (Gastroenterology)
4310 JAMES CASEY ST, STE. 4A
AUSTIN, TX 78745
Physician Assistant
4310 JAMES CASEY ST
AUSTIN, TX 78745
Internal Medicine (Gastroenterology)
4310 JAMES CASEY ST, STE 4-A
AUSTIN, TX 78745
Internal Medicine (Gastroenterology)
4310 JAMES CASEY ST, STE. 4A
AUSTIN, TX 78745
Nurse Practitioner (Family)
4310 JAMES CASEY ST
AUSTIN, TX 78745
Orthopaedic Surgery
4310 JAMES CASEY ST, SUITE 3C
AUSTIN, TX 78745

Frequently Asked Questions NPPES & CMS

Common questions about this NPI record, answered from the official NPPES registry and CMS datasets shown on this page.

What is John Tsai's NPI number?

The NPI number for John Tsai is 1437321791. It was assigned to this individual provider in the NPPES registry on March 27, 2008.

Where is John Tsai located?

John Tsai practices at 4310 James Casey St Ste 4A, Austin, TX 78745. The listed phone number is (512) 448-4588.

What is John Tsai's specialty?

The primary specialty registered for this NPI is Internal Medicine, specializing in Gastroenterology, with taxonomy code 207RG0100X.

Is John Tsai enrolled in Medicare?

Yes. John Tsai is registered in the Medicare PECOS system and accepts Medicare assignment, which means accepting the Medicare-approved amount as payment in full for covered services.

Is John Tsai affiliated with any hospitals?

According to CMS data, John Tsai is affiliated with St David's South Austin Medical Center.

When was this NPI record last updated?

The NPPES record for John Tsai was last updated on February 28, 2017. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 9 years ago. If this record has changed at CMS more recently, you can request an on-demand re-check against the live CMS registry, directly from this page.