Kashyap N. Katwala, MD

NPI 1194791194ActiveIndividual· Internal Medicine, Gastroenterology· Naperville, IL

Internal Medicine, Gastroenterology (MD) in Naperville, Illinois, trained at State University of New York at Stony Brook, School of Medicine (class of 1998). Their prescriptions cost Medicare Part D more than their services did: $1,208,571 for 1,292 claims, against $164,768 paid for services in 2024. Boston Scientific Corporation was the largest of 7 companies reporting payments in 2025, $1,745 in all, mostly food and beverage.

Overview

NPI	1194791194
Status	Active
Entity type	Individual
Credential	MD
Sole proprietor	No
NPI issued	Feb 28, 2006
Last updated in NPPES	Aug 9, 2023
Certified by provider	Aug 9, 2023

Specialties and licenses

Taxonomy	Code	License	State
Internal Medicine, Gastroenterology Primary	207RG0100X	036108869	IL

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 - Gastroenterology (IL)
Accepts assignment	Yes (participating)

Medicare services in 2024

Medicare patients	573
Services billed	1,664 across 112 procedure codes
Paid by Medicare	$164,768

Part D prescriptions in 2024

Prescriptions (claims)	1,292 · 2,133 30-day fills
Patients	384
Total drug cost	$1,208,571
Generic share	78% of claims

Medicare sources and data years

Education and affiliations

Medical school	State University of New York at Stony Brook, School of Medicine
Graduation year	1998
Medicare specialty	Gastroenterology
Secondary specialties	Internal Medicine