Brett Zachary Schaeffer, M.D.

NPI 1144753799ActiveIndividual· Internal Medicine· Loma Linda, CA

Internal Medicine (M.D.) in Loma Linda, California, trained at Loma Linda University School of Medicine (class of 2017). Their prescriptions cost Medicare Part D more than their services did: $241,776 for 536 claims, against $40,423 paid for services in 2024. Boehringer Ingelheim Pharmaceuticals, Inc. was the largest of 2 companies reporting payments in 2025, $141.72 in all, mostly food and beverage.

Overview

NPI	1144753799
Status	Active
Entity type	Individual
Credential	M.D.
Sole proprietor	Yes
NPI issued	Apr 10, 2017
Last updated in NPPES	Apr 9, 2020
Certified by provider	Apr 9, 2020

Specialties and licenses

Taxonomy	Code	License	State
Internal Medicine Primary	207R00000X	157216	CA
Student in an Organized Health Care Education/Training Program	390200000X	—	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 - Pulmonary Disease (TN)
Accepts assignment	Yes (participating)

Medicare services in 2024

Medicare patients	197
Services billed	506 across 39 procedure codes
Paid by Medicare	$40,423

Part D prescriptions in 2024

Prescriptions (claims)	536 · 711 30-day fills
Patients	126
Total drug cost	$241,776
Generic share	49% of claims

Medicare sources and data years

Education and affiliations

Medical school	Loma Linda University School of Medicine
Graduation year	2017
Medicare specialty	Pulmonary Disease
Secondary specialties	Critical Care (Intensivists)