Byron J Allen, MD

NPI 1134202658ActiveIndividual· Internal Medicine, Cardiovascular Disease· Orange, CA

Internal Medicine, Cardiovascular Disease (MD) in Orange, California, trained at University of California, Geffen School of Medicine (class of 1980). Their prescriptions cost Medicare Part D more than their services did: $550,452 for 2,724 claims, against $31,445 paid for services in 2024. Boston Scientific Corporation reported $82.71 in payments in 2025, mostly food and beverage.

Overview

NPI	1134202658
Status	Active
Entity type	Individual
Credential	MD
Sole proprietor	No
NPI issued	Oct 21, 2006
Last updated in NPPES	Apr 12, 2008

Specialties and licenses

Taxonomy	Code	License	State
Internal Medicine, Cardiovascular Disease Primary	207RC0000X	000000G44917	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 - Internal Medicine (CA)
Accepts assignment	Yes (participating)

Medicare services in 2024

Medicare patients	214
Services billed	502 across 16 procedure codes
Paid by Medicare	$31,445

Part D prescriptions in 2024

Prescriptions (claims)	2,724 · 7,702 30-day fills
Patients	264
Total drug cost	$550,452
Generic share	86% of claims

Medicare sources and data years

Education and affiliations

Medical school	University of California, Geffen School of Medicine
Graduation year	1980
Medicare specialty	Internal Medicine
Secondary specialties	Cardiovascular Disease (Cardiology)
Telehealth	Offers telehealth