Sandra Anping Tsai, MD

NPI 1083717359ActiveIndividual· Internal Medicine· Stanford, CA

Internal Medicine (MD) in Stanford, California, trained at University of Texas Southwestern Medical School at Dallas (class of 1995). Their prescriptions cost Medicare Part D more than their services did: $166,058 for 1,774 claims, against $28,901 paid for services in 2024. Idorsia Pharmaceuticals US Inc was the largest of 2 companies reporting payments in 2025, $190.29 in all, mostly food and beverage.

Overview

NPI	1083717359
Status	Active
Entity type	Individual
Credential	MD
Sole proprietor	No
NPI issued	Sep 5, 2006
Last updated in NPPES	Apr 24, 2024
Certified by provider	Apr 24, 2024

Specialties and licenses

Taxonomy	Code	License	State
Internal Medicine Primary	207R00000X	A65925	CA

About license numbers in NPPES

Exclusion screening

List	Result	Details
HHS-OIG LEIE · Nov 10, 2026	No match	Checked by NPI and by name + state
North Carolina Medicaid · Nov 11, 2026	No match	—
New York OMIG · Nov 11, 2026	No match	—
Ohio Medicaid · Nov 11, 2026	No match	—
Pennsylvania Medicheck · Nov 11, 2026	No match	—
Washington HCA · Nov 11, 2026	No match	—

Official OIG search · How matching works ·Bulk check a roster

Medicare

Enrollment (PECOS)	Enrolled Practitioner - Internal Medicine (CA)
Accepts assignment	Yes (participating)

Medicare services in 2024

Medicare patients	242
Services billed	470 across 16 procedure codes
Paid by Medicare	$28,901

Part D prescriptions in 2024

Prescriptions (claims)	1,774 · 4,143 30-day fills
Patients	200
Total drug cost	$166,058
Generic share	87% of claims

Medicare sources and data years

Education and affiliations

Medical school	University of Texas Southwestern Medical School at Dallas
Graduation year	1995
Medicare specialty	Internal Medicine
Telehealth	Offers telehealth