Lorena H. Tan, MD

NPI 1417957697ActiveIndividual· Family Medicine· Livermore, CA

Family Medicine (MD) in Livermore, California, trained at University of Southern California Keck School of Medicine (class of 1995). Their prescriptions cost Medicare Part D more than their services did: $1,001,906 for 11,731 claims, against $171,561 paid for services in 2024. Glaxosmithkline, LLC. was the largest of 12 companies reporting payments in 2025, $738.89 in all, mostly food and beverage.

Overview

NPI	1417957697
Status	Active
Entity type	Individual
Credential	MD
Sole proprietor	Yes
NPI issued	Jul 28, 2005
Last updated in NPPES	Nov 15, 2016

Specialties and licenses

Taxonomy	Code	License	State
Family Medicine Primary	207Q00000X	A61352	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 - Family Practice (CA)
Accepts assignment	Yes (participating)

Medicare services in 2024

Medicare patients	649
Services billed	2,662 across 33 procedure codes
Paid by Medicare	$171,561

Part D prescriptions in 2024

Prescriptions (claims)	11,731 · 27,267 30-day fills
Patients	946
Total drug cost	$1,001,906
Generic share	88% of claims

Medicare sources and data years

Education and affiliations

Medical school	University of Southern California Keck School of Medicine
Graduation year	1995
Medicare specialty	Family Practice
Secondary specialties	Emergency Medicine
Telehealth	Offers telehealth