Dennis J. Sheehan, M.D.

NPI 1205880101ActiveIndividual· Internal Medicine, Interventional Cardiology· Redwood City, CA

Internal Medicine, Interventional Cardiology (M.D.) in Redwood City, California, trained at Loma Linda University School of Medicine (class of 1977). Their prescriptions cost Medicare Part D more than their services did: $767,572 for 3,955 claims, against $115,737 paid for services in 2024. Abbott Laboratories was the largest of 2 companies reporting payments in 2025, $270,178 in all, mostly consulting fees.

Overview

NPI	1205880101
Status	Active
Entity type	Individual
Credential	M.D.
Sole proprietor	No
NPI issued	May 22, 2006
Last updated in NPPES	Mar 8, 2016

Specialties and licenses

Taxonomy	Code	License	State
Internal Medicine, Interventional Cardiology Primary	207RI0011X	G38277	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	230
Services billed	1,078 across 45 procedure codes
Paid by Medicare	$115,737

Part D prescriptions in 2024

Prescriptions (claims)	3,955 · 9,368 30-day fills
Patients	254
Total drug cost	$767,572
Generic share	83% of claims

Medicare sources and data years

Education and affiliations

Medical school	Loma Linda University School of Medicine
Graduation year	1977
Medicare specialty	Cardiovascular Disease (Cardiology)
Secondary specialties	Internal Medicine
Telehealth	Offers telehealth