Tamiko Robin Katsumoto, M.D.

NPI 1952571317ActiveIndividual· Internal Medicine, Rheumatology· Stanford, CA

Internal Medicine, Rheumatology (M.D.) in Stanford, California, trained at University of California, San Francisco School of Medicine (class of 2002). Their prescriptions cost Medicare Part D more than their services did: $1,311,878 for 824 claims, against $57,065 paid for services in 2024. E.R. Squibb & Sons, L.L.C. reported $63.36 in payments in 2024, mostly food and beverage.

Overview

NPI	1952571317
Status	Active
Entity type	Individual
Credential	M.D.
Sole proprietor	No
NPI issued	Mar 1, 2008
Last updated in NPPES	Apr 25, 2024
Certified by provider	Apr 25, 2024

Specialties and licenses

Taxonomy	Code	License	State
Internal Medicine, Rheumatology Primary	207RR0500X	A87253	CA
Internal Medicine	207R00000X	A87253	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 - Rheumatology (CA)
Accepts assignment	Yes (participating)

Medicare services in 2024

Medicare patients	204
Services billed	652 across 12 procedure codes
Paid by Medicare	$57,065

Part D prescriptions in 2024

Prescriptions (claims)	824 · 1,765 30-day fills
Patients	135
Total drug cost	$1,311,878
Generic share	81% of claims

Medicare sources and data years

Education and affiliations

Medical school	University of California, San Francisco School of Medicine
Graduation year	2002
Medicare specialty	Rheumatology
Secondary specialties	Internal Medicine
Telehealth	Offers telehealth