Catherine Handy Marshall, MD

NPI 1134443948ActiveIndividual· Internal Medicine, Medical Oncology· Baltimore, MD

Internal Medicine, Medical Oncology (MD) in Baltimore, Maryland, trained at Johns Hopkins University School of Medicine (class of 2012). Their prescriptions cost Medicare Part D more than their services did: $1,144,115 for 458 claims, against $570,185 paid for services in 2024. Pfizer Inc. was the largest of 2 companies reporting payments in 2025, $2,113 in all, mostly consulting fees.

Overview

NPI	1134443948
Status	Active
Entity type	Individual
Credential	MD
Sole proprietor	No
NPI issued	Mar 23, 2010
Last updated in NPPES	Apr 20, 2021
Certified by provider	Apr 20, 2021

Specialties and licenses

Taxonomy	Code	License	State
Internal Medicine, Medical Oncology Primary	207RX0202X	D0080261	MD

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

Medicare services in 2024

Medicare patients	281
Services billed	14,719 across 40 procedure codes
Paid by Medicare	$570,185

Part D prescriptions in 2024

Prescriptions (claims)	458 · 553 30-day fills
Patients	76
Total drug cost	$1,144,115
Generic share	77% of claims

Medicare sources and data years

Education and affiliations

Medical school	Johns Hopkins University School of Medicine
Graduation year	2012
Medicare specialty	Medical Oncology
Secondary specialties	Internal Medicine
Telehealth	Offers telehealth