Kristin Gail Fless, M.D.

NPI 1043305493ActiveIndividual· Internal Medicine, Critical Care Medicine· Livingston, NJ

Internal Medicine, Critical Care Medicine (M.D.) in Livingston, New Jersey, trained at Rutgers New Jersey Medical School (class of 1995). Their prescriptions cost Medicare Part D more than their services did: $134,065 for 802 claims, against $48,708 paid for services in 2024. Intuitive Surgical, Inc. was the largest of 14 companies reporting payments in 2025, $3,387 in all, mostly education.

Overview

NPI	1043305493
Status	Active
Entity type	Individual
Credential	M.D.
Sole proprietor	Yes
NPI issued	Oct 3, 2006
Last updated in NPPES	Jul 31, 2007

Specialties and licenses

Taxonomy	Code	License	State
Internal Medicine, Critical Care Medicine Primary	207RC0200X	25MA06455300	NJ
Internal Medicine, Pulmonary Disease	207RP1001X	25MA06455300	NJ
Internal Medicine, Sleep Medicine	207RS0012X	25MA06455300	NJ

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) (NJ)
Accepts assignment	Yes (participating)

Medicare services in 2024

Medicare patients	239
Services billed	664 across 30 procedure codes
Paid by Medicare	$48,708

Part D prescriptions in 2024

Prescriptions (claims)	802 · 1,031 30-day fills
Patients	165
Total drug cost	$134,065
Generic share	58% of claims

Medicare sources and data years

Education and affiliations

Medical school	Rutgers New Jersey Medical School
Graduation year	1995
Medicare specialty	Critical Care (Intensivists)
Secondary specialties	Pulmonary Disease
Telehealth	Offers telehealth