Thomas Oran Dalton, M.D.

NPI 1124286661ActiveIndividual· Internal Medicine, Geriatric Medicine· Dallas, TX

Internal Medicine, Geriatric Medicine (M.D.) in Dallas, Texas, trained at University of Texas Southwestern Medical School at Dallas (class of 2008). Their prescriptions cost Medicare Part D more than their services did: $75,424 for 893 claims, against $23,818 paid for services in 2024. Boston Scientific Corporation reported $53.70 in payments in 2025, mostly food and beverage.

Overview

NPI	1124286661
Status	Active
Entity type	Individual
Credential	M.D.
Sole proprietor	No
NPI issued	May 31, 2008
Last updated in NPPES	Jul 14, 2014

Specialties and licenses

Taxonomy	Code	License	State
Internal Medicine, Geriatric Medicine Primary	207RG0300X	N6849	TX
Internal Medicine	207R00000X	N6849	TX

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 - Geriatric Medicine (TX)
Accepts assignment	Yes (participating)

Medicare services in 2024

Medicare patients	128
Services billed	345 across 20 procedure codes
Paid by Medicare	$23,818

Part D prescriptions in 2024

Prescriptions (claims)	893 · 2,065 30-day fills
Patients	148
Total drug cost	$75,424
Generic share	87% of claims

Medicare sources and data years

Education and affiliations

Medical school	University of Texas Southwestern Medical School at Dallas
Graduation year	2008
Medicare specialty	Geriatric Medicine
Secondary specialties	Internal Medicine