Andrew Y. Chang, M.D.

NPI 1366888778ActiveIndividual· Internal Medicine, Cardiovascular Disease· New Haven, CT

Internal Medicine, Cardiovascular Disease (M.D.) in New Haven, Connecticut, trained at Stanford University School of Medicine (class of 2013). Mostly services rather than prescriptions: Medicare paid $11,433 for 211 patients in 2024, with only 31 Part D claims. Impulse Dynamics (USA) Inc. reported $58.17 in payments in 2024, mostly food and beverage.

Overview

NPI	1366888778
Status	Active
Entity type	Individual
Credential	M.D.
Sole proprietor	No
NPI issued	May 13, 2013
Last updated in NPPES	Jun 3, 2024
Certified by provider	Jun 3, 2024

Specialties and licenses

Taxonomy	Code	License	State
Internal Medicine, Cardiovascular Disease Primary	207RC0000X	374139	CT
Internal Medicine	207R00000X	131726	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 - Cardiovascular Disease (Cardiology) (CT)
Accepts assignment	Yes (participating)

Medicare services in 2024

Medicare patients	211
Services billed	325 across 23 procedure codes
Paid by Medicare	$11,433

Part D prescriptions in 2024

Prescriptions (claims)	31 · 47 30-day fills
Patients	12
Total drug cost	$4,120
Generic share	81% of claims

Medicare sources and data years

Education and affiliations

Medical school	Stanford University School of Medicine
Graduation year	2013
Medicare specialty	Cardiovascular Disease (Cardiology)
Secondary specialties	Internal Medicine