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

Mr. Balaji Kodandaraman Ayyar

Individual provider Gastroenterology Physician · NPI 1437595204

Mr. Balaji Kodandaraman Ayyar practises Gastroenterology in San Antonio, Texas. Graduated from University of Texas Medical School at San Antonio in 2013, 13 years ago. Practices with Texas Digestive Disease Consultants, PLLC, a 615-clinician group, accepts Medicare assignment and offers telehealth. Licensed in Texas.

Years since qualifying
13
Trained at
University of Texas Medical School at San Antonio
Licensed in
TX
In the registry since
2013
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Practice location Address checks out

855 Proton Rd
San Antonio, TX 78258-4203
Phone: (210) 614-1234
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Directions in Google Maps · Apple Maps · OpenStreetMap

Pin is approximate — placed at the ZIP-code centre, not the exact door.

Specialties & licences

Gastroenterology Physician (primary) Taxonomy 207RG0100X · Licence S1046 (TX)

Record details

NPI number1437595204
Entity typeIndividual (Type 1)
GenderMale
Sole proprietorNo
NPI enumeratedMay 20, 2013
Last updated in NPPESFebruary 20, 2023
Certification dateFebruary 20, 2023

Medicare enrollment

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

Medicare specialtyGASTROENTEROLOGY
Also practisesINTERNAL MEDICINE
Medical schoolUNIVERSITY OF TEXAS MEDICAL SCHOOL AT SAN ANTONIO
Graduated 2013 (13 years in practice)
Group practice Texas Digestive Disease Consultants, Pllc — 615 clinicians
Accepts Medicare assignment Yes — accepts the Medicare-approved amount
TelehealthOffers telehealth services

Procedures

From CMS Care Compare, which counts the procedures a clinician billed to Original Medicare and Medicare Advantage over a recent 12-month period. CMS reports a fixed list of common procedures, so this is not everything the clinician does. Counts of 10 or fewer are given as a range, because CMS withholds small numbers.

Colonoscopy 103 times · 80th percentile
Upper gastrointestinal (GI) endoscopy for acid reflux 120 times · 80th percentile

The percentile compares how often this clinician performed the procedure with other clinicians who performed it, as CMS calculates it. It measures volume, not outcomes or skill.

Medicare patients and services, 2024

From the CMS Medicare Physician & Other Practitioners file for calendar year 2024. It counts Original Medicare patients only, so a practice that mostly sees Medicare Advantage or privately insured patients looks smaller here than it is.

Medicare patients423
Services billed 6,736 a service is one billed item, such as a visit, a test or a procedure
Average patient age72

Dollar amounts are not shown. What Medicare pays a practice is gross billings, before staff, premises and tax and including the cost of any drugs it administers, so it is not what a clinician earns.

Payments from drug and device companies, 2025

Drug and device makers are required by federal law (the Physician Payments Sunshine Act) to report what they pay or give to clinicians, and CMS publishes the reports as Open Payments. This is the 2025 program year. A report is a record of a payment, not an allegation of anything, and many are small items such as meals. Only general payments are listed here; research payments and ownership or investment interests are reported separately by CMS and are not shown.

Food and Beverage $1,197 59 payments · a meal or drink at a meeting or visit, not a fee

Each amount is the sum of what companies reported for that kind of payment in 2025, rounded to the dollar. Not all of it is income to the clinician: a meal is not a fee, a charitable contribution goes to a charity, and a royalty or an acquisition payment is not a salary.

Check a report, or dispute one, at the source in CMS’s own tool, Open Payments. Corrections go through CMS’s dispute process. This site removes a home address on request and asks for no proof, because that is privacy; it will not remove an accurate payment report on request, because that is a statutory public disclosure.

Practises at

Facilities the CMS Facility Affiliation file lists for this clinician.

  • Baptist Medical Center Hospital · San Antonio, TX
  • Methodist Hospital Stone Oak Hospital · San Antonio, TX

Colleagues at Texas Digestive Disease Consultants, PLLC

Clinicians the CMS Doctors & Clinicians file lists under the same group practice. CMS counts 615 clinicians in the practice; 12 are shown here.

Other providers in San Antonio