Ann K. Kao, M.D.

NPI 1336130145ActiveIndividual· Internal Medicine, Cardiovascular Disease· Larkspur, CA

Internal Medicine, Cardiovascular Disease (M.D.) in Larkspur, California, trained at New York University School of Medicine (class of 1985). Their prescriptions cost Medicare Part D more than their services did: $385,010 for 1,671 claims, against $78,926 paid for services in 2024. Heartflow, Inc. was the largest of 2 companies reporting payments in 2025, $215.33 in all, mostly food and beverage.

Overview

NPI	1336130145
Status	Active
Entity type	Individual
Credential	M.D.
Sole proprietor	No
NPI issued	Nov 1, 2005
Last updated in NPPES	Jul 20, 2021
Certified by provider	Jul 20, 2021

Specialties and licenses

Taxonomy	Code	License	State
Internal Medicine, Cardiovascular Disease Primary	207RC0000X	G65338	CA

About license numbers in NPPES

Exclusion screening

List	Result	Details
HHS-OIG LEIE · Oct 9, 2026	No match	Checked by NPI and by name + state
North Carolina Medicaid · Nov 10, 2026	No match	—
New York OMIG · Nov 10, 2026	No match	—
Ohio Medicaid · Nov 10, 2026	No match	—
Pennsylvania Medicheck · Nov 10, 2026	No match	—
Washington HCA · Nov 10, 2026	No match	—

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

Medicare

Enrollment (PECOS)	Enrolled Practitioner - Cardiovascular Disease (Cardiology) (CA)
Accepts assignment	Yes (participating)

Medicare services in 2024

Medicare patients	419
Services billed	1,414 across 26 procedure codes
Paid by Medicare	$78,926

Part D prescriptions in 2024

Prescriptions (claims)	1,671 · 4,602 30-day fills
Patients	228
Total drug cost	$385,010
Generic share	83% of claims

Medicare sources and data years

Education and affiliations

Medical school	New York University School of Medicine
Graduation year	1985
Medicare specialty	Cardiovascular Disease (Cardiology)
Secondary specialties	Internal Medicine
Telehealth	Offers telehealth