Cynthia Yan Callahan, M.D.

NPI 1134344799ActiveIndividual· Internal Medicine, Pulmonary Disease· Pittsfield, MA

Internal Medicine, Pulmonary Disease (M.D.) in Pittsfield, Massachusetts, trained at Tufts University School of Medicine (class of 2005). Their prescriptions cost Medicare Part D more than their services did: $1,424,008 for 2,777 claims, against $130,844 paid for services in 2024. Regeneron Healthcare Solutions, Inc. reported $17.01 in payments in 2024, mostly food and beverage.

Overview

NPI	1134344799
Status	Active
Entity type	Individual
Credential	M.D.
Sole proprietor	No
NPI issued	Apr 17, 2007
Last updated in NPPES	Jun 5, 2013

Specialties and licenses

Taxonomy	Code	License	State
Internal Medicine, Pulmonary Disease Primary	207RP1001X	234453	MA

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 - Pulmonary Disease (MA)
Accepts assignment	Yes (participating)

Medicare services in 2024

Medicare patients	919
Services billed	2,106 across 36 procedure codes
Paid by Medicare	$130,844

Part D prescriptions in 2024

Prescriptions (claims)	2,777 · 3,691 30-day fills
Patients	522
Total drug cost	$1,424,008
Generic share	39% of claims

Medicare sources and data years

Education and affiliations

Medical school	Tufts University School of Medicine
Graduation year	2005
Medicare specialty	Pulmonary Disease
Secondary specialties	Critical Care (Intensivists)
Telehealth	Offers telehealth