David Johnson, MD

NPI 1013009422ActiveIndividual· Internal Medicine, Medical Oncology· Dallas, TX

Internal Medicine, Medical Oncology (MD) in Dallas, Texas, trained at Medical College of Georgia School of Medicine (class of 1976). Their prescriptions cost Medicare Part D more than their services did: $17,191 for 109 claims, against $11,362 paid for services in 2024. Astrazeneca Uk Limited was the largest of 3 companies reporting payments in 2025, $48,352 in all, mostly consulting fees.

Overview

NPI	1013009422
Status	Active
Entity type	Individual
Credential	MD
Sole proprietor	No
NPI issued	Sep 30, 2006
Last updated in NPPES	Jan 8, 2019

Specialties and licenses

Taxonomy	Code	License	State
Internal Medicine, Medical Oncology Primary	207RX0202X	N8409	TX
Internal Medicine, Medical Oncology	207RX0202X	MD13476	TN

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 4, 2026	No match	—
New York OMIG · Nov 4, 2026	No match	—
Ohio Medicaid · Nov 4, 2026	No match	—
Pennsylvania Medicheck · Nov 4, 2026	No match	—
Washington HCA · Nov 4, 2026	No match	—

Official OIG search · How matching works ·Bulk check a roster

Medicare

Enrollment (PECOS)	Enrolled Practitioner - Hematology/Oncology (TX)
Accepts assignment	Yes (participating)

Medicare services in 2024

Medicare patients	39
Services billed	165 across 6 procedure codes
Paid by Medicare	$11,362

Part D prescriptions in 2024

Prescriptions (claims)	109 · 160 30-day fills
Patients	41
Total drug cost	$17,191
Generic share	72% of claims

Medicare sources and data years

Education and affiliations

Medical school	Medical College of Georgia School of Medicine
Graduation year	1976
Medicare specialty	Hematology/Oncology
Secondary specialties	Internal Medicine