Alison R. Walker, M.D.

NPI 1043224819ActiveIndividual· Internal Medicine, Hematology & Oncology· Tampa, FL

Internal Medicine, Hematology & Oncology (M.D.) in Tampa, Florida, trained at University of Rochester School of Medicine and Dentistry (class of 2002). Their prescriptions cost Medicare Part D more than their services did: $1,373,520 for 366 claims, against $29,071 paid for services in 2024. Tempus Ai, Inc was the largest of 2 companies reporting payments in 2025, $247.14 in all, mostly food and beverage.

Overview

NPI	1043224819
Status	Active
Entity type	Individual
Credential	M.D.
Sole proprietor	No
NPI issued	Jul 28, 2006
Last updated in NPPES	Jun 23, 2022
Certified by provider	Jun 23, 2022

Specialties and licenses

Taxonomy	Code	License	State
Internal Medicine, Hematology & Oncology Primary	207RH0003X	ME157566	FL
Internal Medicine, Hematology	207RH0000X	35091936	OH

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 - Hematology/Oncology (FL)
Accepts assignment	Yes (participating)

Medicare services in 2024

Medicare patients	123
Services billed	353 across 12 procedure codes
Paid by Medicare	$29,071

Part D prescriptions in 2024

Prescriptions (claims)	366 · 448 30-day fills
Patients	55
Total drug cost	$1,373,520
Generic share	66% of claims

Medicare sources and data years

Education and affiliations

Medical school	University of Rochester School of Medicine and Dentistry
Graduation year	2002
Medicare specialty	Hematology/Oncology
Telehealth	Offers telehealth