Michael A. Katz, MD

NPI 1841213899ActiveIndividual· Internal Medicine· Fullerton, CA

Internal Medicine (MD) in Fullerton, California, trained at University of Arizona College of Medicine (class of 2000). Medicare paid $81,771 for services to 158 patients in 2024. Abiomed was the largest of 3 companies reporting payments in 2025, $219.50 in all, mostly food and beverage.

Overview

NPI	1841213899
Status	Active
Entity type	Individual
Credential	MD
Sole proprietor	No
NPI issued	Jul 25, 2006
Last updated in NPPES	May 6, 2026
Certified by provider	May 6, 2026

Specialties and licenses

Taxonomy	Code	License	State
Internal Medicine Primary	207R00000X	A77114	CA
Emergency Medicine	207P00000X	A77114	CA
Internal Medicine, Hospice and Palliative Medicine	207RH0002X	A77114	CA
Psychiatry & Neurology, Neurocritical Care	2084A2900X	A77114	CA
Internal Medicine, Critical Care Medicine	207RC0200X	A77114	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 - Critical Care (Intensivists) (CA)
Accepts assignment	Yes (participating)

Medicare services in 2024

Medicare patients	158
Services billed	566 across 20 procedure codes
Paid by Medicare	$81,771

Medicare sources and data years

Education and affiliations

Medical school	University of Arizona College of Medicine
Graduation year	2000
Medicare specialty	Critical Care (Intensivists)
Secondary specialties	Pulmonary Disease