Malcolm D. John, MD

NPI 1003872870ActiveIndividual· Internal Medicine· San Francisco, CA

Internal Medicine (MD) in San Francisco, California, trained at Harvard Medical School (class of 1994). Their prescriptions cost Medicare Part D more than their services did: $1,311,825 for 1,007 claims, against $15,731 paid for services in 2024. Gilead Sciences, Inc. was the largest of 2 companies reporting payments in 2025, $105.69 in all, mostly food and beverage.

Overview

NPI	1003872870
Status	Active
Entity type	Individual
Credential	MD
Sole proprietor	No
NPI issued	Apr 21, 2006
Last updated in NPPES	Jul 30, 2008

Specialties and licenses

Taxonomy	Code	License	State
Internal Medicine Primary	207R00000X	G84379	CA
Internal Medicine, Infectious Disease	207RI0200X	G84379	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 4, 2026	No match	—
New York OMIG · Nov 4, 2026	No match	—
Ohio Medicaid · Nov 4, 2026	No match	—
Pennsylvania Medicheck · Nov 4, 2026	No match	—
Washington HCA · Nov 4, 2026	No match	—

Official OIG search · How matching works ·Bulk check a roster

Medicare

Enrollment (PECOS)	Enrolled Practitioner - Infectious Disease (CA)
Accepts assignment	Yes (participating)

Medicare services in 2024

Medicare patients	77
Services billed	184 across 13 procedure codes
Paid by Medicare	$15,731

Part D prescriptions in 2024

Prescriptions (claims)	1,007 · 1,384 30-day fills
Patients	58
Total drug cost	$1,311,825
Generic share	66% of claims

Medicare sources and data years

Education and affiliations

Medical school	Harvard Medical School
Graduation year	1994
Medicare specialty	Infectious Disease
Secondary specialties	Internal Medicine
Telehealth	Offers telehealth