Kristin J. Karlyn, MD

NPI 1033182530ActiveIndividual· Internal Medicine· Pasadena, CA

Internal Medicine (MD) in Pasadena, California, trained at University of California, Irvine, California College of Medicine (class of 1996). Their prescriptions cost Medicare Part D more than their services did: $481,714 for 4,062 claims, against $46,479 paid for services in 2024. Lilly USA, LLC was the largest of 5 companies reporting payments in 2025, $113.65 in all, mostly food and beverage.

Overview

NPI	1033182530
Status	Active
Entity type	Individual
Credential	MD
Sole proprietor	No
NPI issued	Feb 7, 2006
Last updated in NPPES	Jun 17, 2026
Certified by provider	Jun 17, 2026

Specialties and licenses

Taxonomy	Code	License	State
Internal Medicine Primary	207R00000X	A063407	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 10, 2026	No match	—
New York OMIG · Nov 10, 2026	No match	—
Ohio Medicaid · Nov 10, 2026	No match	—
Pennsylvania Medicheck · Nov 10, 2026	No match	—
Washington HCA · Nov 10, 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	142
Services billed	687 across 24 procedure codes
Paid by Medicare	$46,479

Part D prescriptions in 2024

Prescriptions (claims)	4,062 · 8,041 30-day fills
Patients	184
Total drug cost	$481,714
Generic share	86% of claims

Medicare sources and data years

Education and affiliations

Medical school	University of California, Irvine, California College of Medicine
Graduation year	1996
Medicare specialty	Internal Medicine
Telehealth	Offers telehealth