Daniel Leonard Griffen III, M.D.

NPI 1083640080ActiveIndividual· Internal Medicine, Cardiovascular Disease· Rockville, MD

Internal Medicine, Cardiovascular Disease (M.D.) in Rockville, Maryland, trained at University of Iowa, Rj & L Carver College of Medicine (class of 1982). Their prescriptions cost Medicare Part D more than their services did: $1,269,416 for 6,249 claims, against $613,831 paid for services in 2024. Amgen Inc. was the largest of 8 companies reporting payments in 2025, $775.13 in all, mostly food and beverage.

Overview

NPI	1083640080
Status	Active
Entity type	Individual
Credential	M.D.
Sole proprietor	No
NPI issued	Jun 23, 2006
Last updated in NPPES	May 15, 2009

Specialties and licenses

Taxonomy	Code	License	State
Internal Medicine, Cardiovascular Disease Primary	207RC0000X	D0042110	MD

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) (DC)
Accepts assignment	Yes (participating)

Medicare services in 2024

Medicare patients	3,511
Services billed	8,582 across 31 procedure codes
Paid by Medicare	$613,831

Part D prescriptions in 2024

Prescriptions (claims)	6,249 · 17,113 30-day fills
Patients	808
Total drug cost	$1,269,416
Generic share	85% of claims

Medicare sources and data years

Education and affiliations

Medical school	University of Iowa, Rj & L Carver College of Medicine
Graduation year	1982
Medicare specialty	Cardiovascular Disease (Cardiology)
Secondary specialties	Internal Medicine
Telehealth	Offers telehealth