Ellen Kelly Ritchie, MD

NPI 1003996653ActiveIndividual· Internal Medicine, Medical Oncology· New York, NY

Internal Medicine, Medical Oncology (MD) in New York, New York, trained at Columbia University College of Physicians and Surgeons (class of 1997). Their prescriptions cost Medicare Part D more than their services did: $4,279,298 for 613 claims, against $66,384 paid for services in 2024. Incyte Corporation was the largest of 2 companies reporting payments in 2024, $1,876 in all, mostly consulting fees.

Overview

NPI	1003996653
Status	Active
Entity type	Individual
Credential	MD
Sole proprietor	No
NPI issued	Oct 17, 2006
Last updated in NPPES	Sep 16, 2011

Specialties and licenses

Taxonomy	Code	License	State
Internal Medicine, Medical Oncology Primary	207RX0202X	213372	NY
Internal Medicine	207R00000X	213372	NY
Internal Medicine, Hematology	207RH0000X	213372	NY

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 - Medical Oncology (NY)
Accepts assignment	Yes (participating)

Medicare services in 2024

Medicare patients	191
Services billed	835 across 12 procedure codes
Paid by Medicare	$66,384

Part D prescriptions in 2024

Prescriptions (claims)	613 · 853 30-day fills
Patients	98
Total drug cost	$4,279,298
Generic share	50% of claims

Medicare sources and data years

Education and affiliations

Medical school	Columbia University College of Physicians and Surgeons
Graduation year	1997
Medicare specialty	Medical Oncology
Secondary specialties	Hematology
Telehealth	Offers telehealth