Timothy R. Oneill, DO

NPI 1033117890ActiveIndividual· Family Medicine· Clarkston, MI

Family Medicine (DO) in Clarkston, Michigan, trained at Arizona College of Osteopathic Medicine Mid Western University (class of 2003). Their prescriptions cost Medicare Part D more than their services did: $937,271 for 10,752 claims, against $152,302 paid for services in 2024. Abbvie Inc. was the largest of 18 companies reporting payments in 2025, $996.35 in all, mostly food and beverage.

Overview

NPI	1033117890
Status	Active
Entity type	Individual
Credential	DO
Sole proprietor	No
NPI issued	Jul 14, 2005
Last updated in NPPES	Feb 25, 2020
Certified by provider	Feb 25, 2020

Specialties and licenses

Taxonomy	Code	License	State
Family Medicine Primary	207Q00000X	TO020249	MI

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 - Family Practice (MI)
Accepts assignment	Yes (participating)

Medicare services in 2024

Medicare patients	498
Services billed	4,121 across 68 procedure codes
Paid by Medicare	$152,302

Part D prescriptions in 2024

Prescriptions (claims)	10,752 · 22,537 30-day fills
Patients	660
Total drug cost	$937,271
Generic share	89% of claims

Medicare sources and data years

Education and affiliations

Medical school	Arizona College of Osteopathic Medicine Mid Western University
Graduation year	2003
Medicare specialty	Family Practice
Telehealth	Offers telehealth