Justin Phillip Fong, M.D.

NPI 1841346608ActiveIndividual· Internal Medicine· San Francisco, CA

Internal Medicine (M.D.) in San Francisco, California, trained at University of Southern California Keck School of Medicine (class of 1984). Their prescriptions cost Medicare Part D more than their services did: $302,135 for 2,428 claims, against $100,188 paid for services in 2024. Astrazeneca Pharmaceuticals LP was the largest of 2 companies reporting payments in 2025, $94.67 in all, mostly food and beverage.

Overview

NPI	1841346608
Status	Active
Entity type	Individual
Credential	M.D.
Sole proprietor	Yes
NPI issued	Jan 26, 2007
Last updated in NPPES	Sep 1, 2009

Specialties and licenses

Taxonomy	Code	License	State
Internal Medicine Primary	207R00000X	G57883	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 - Internal Medicine (CA)
Accepts assignment	Yes (participating)

Medicare services in 2024

Medicare patients	104
Services billed	1,194 across 10 procedure codes
Paid by Medicare	$100,188

Part D prescriptions in 2024

Prescriptions (claims)	2,428 · 5,406 30-day fills
Patients	196
Total drug cost	$302,135
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	1984
Medicare specialty	Internal Medicine
Telehealth	Offers telehealth