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THOMAS J ONEIL DO
NPI 1023090552
Psychiatry & Neurology - Neurology in Warren, MI

Active since November 18, 2005PECOS Enrolled
27427 SCHOENHERR RD, STE 100, WARREN, MI 48088(586) 756-5500(586) 756-5511 Get Directions Write a Review

NPPES record last updated: December 20, 2022. Verified against the NPPES registry weekly; last sync: November 01, 2026.

Record update history: Dec 20, 2022, Dec 2, 2015 (2 updates tracked since 2015).

About Thomas J Oneil Do NPPES

Official registry information on file with the National Plan and Provider Enumeration System.

THOMAS J ONEIL DO (NPI 1023090552) is an individual neurology provider in Warren, Michigan, licensed in Michigan (5101008653) and active in the NPI registry since November 2005. He is enrolled in Medicare PECOS.

NPPES Registry Identity

NPI1023090552
Entity TypeIndividualMale
Primary Taxonomy2084N0400X
Provider Legal NameTHOMAS J ONEILCredential: DO
Location Address27427 SCHOENHERR RD, STE 100Warren, MI 48088-4729
Mailing AddressPo Box 7027Novi, MI 48376-7027 · (586) 756-5500 · Fax (586) 756-5511
Phone(586) 756-5500
Fax(586) 756-5511
Sole ProprietorNo
Enumeration DateNovember 18, 2005
Last NPPES UpdateDecember 20, 20222 updates tracked since enumeration
NPPES CertifiedDecember 20, 2022
✔ NPI 1023090552 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses

★ Primary SpecialtyPsychiatry & Neurology · NeurologyAllopathic & Osteopathic Physicians
Taxonomy Code2084N0400X
License✔ Licensed in MI · 5101008653
Definition
A Neurologist specializes in the diagnosis and treatment of diseases or impaired function of the brain, spinal cord, peripheral nerves, muscles, autonomic nervous system, and blood vessels that relate to these structures.
27427 SCHOENHERR RD, Warren, MI 48088
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Other Identifiers 2

Medicaid431306811MI
Medicaid435177511MI

Accepted Insurance

The full list of accepted plans is on the Insurance tab. Issuers include McLaren Health Plan Community.Insurance ›

Medicare Participation & PECOS CMS

Medicare enrollment, assignment, billing reassignment, and ordering and referring status from CMS.

Medicare Enrollment Status

✔

Enrolled in Medicare (PECOS)

Thomas J Oneil Do is registered in the CMS Provider Enrollment, Chain and Ownership System (PECOS).

Eligible to Order & Refer✔ Part B Labs & Imaging✔ Durable Medical Equipment✔ Home Health Agency✔ Power Mobility DevicesPer the CMS Ordering and Referring file. Eligibility means Medicare pays claims that this provider orders or refers for these categories.

Medicare Billing Reassignments

3

Medicare enrollment records show Thomas Oneil reassigns Medicare billing to 3 organizations. Each organization bills Medicare for the services this provider delivers there; the nearest is listed first.

Macomb Neurology Associates PC
Same address
Neurology
27427 SCHOENHERR, STE 100
Warren, MI 48088
  • Reassigned Medicare billing, Michigan enrollment
  • 2 clinicians in this Medicare group
NPI 1467525675 (586) 756-5500
Henry Ford Health Macomb Oakland Hospital
1.1 mi
Cardiovascular Disease
11800 E 12 MILE RD
Warren, MI 48093
  • Reassigned Medicare billing, Michigan enrollment
  • 57 clinicians in this Medicare group
NPI 1518124320 (586) 573-5000
Michigan Healthcare Professionals, P.C.
4.9 mi
Urgent Care
27650 DEQUINDRE RD STE 1200
Warren, MI 48092
  • Reassigned Medicare billing, Michigan enrollment
  • Medicare enrollment name: Michigan Healthcare Professionals PC
  • 741 clinicians in this Medicare group
NPI 1568285872 (248) 544-9050

Source: CMS Revalidation Reassignment List, October 2026 release. Reassignment records can lag staffing changes; confirm a current affiliation with the organization.

Areas of Expertise CMS Part B claims 10

Services this provider delivered to Medicare fee-for-service patients, from the CMS Medicare utilization data. Higher counts generally reflect more experience with a service; care delivered outside Medicare is not included.

Initial hospital care with straightforward or low-level medical decision making, if using time, at least 55 minutes 99222
Initial hospital inpatient care is a service where a healthcare provider spends about 50 minutes per day overseeing your care while you're admitted in the hospital. This includes reviewing your health status, planning your treatment, and ensuring your safety and comfort.
110 services106 patients
Established patient office or other outpatient visit with moderate level of decision making, if using time, 30 minutes or more 99214
This is a routine check-up for patients who have previously visited our clinic. It involves a comprehensive review of your health and any ongoing treatments. The consultation lasts between 30-39 minutes, allowing enough time to discuss any concerns.
103 services97 patients
Subsequent hospital care with moderate levelof medical decision making, if using time, at least 35 minutes 99232
Follow-up hospital inpatient care involves daily check-ups while you're admitted in the hospital. Typically, a healthcare provider spends about 25 minutes each day reviewing your condition, adjusting treatment if needed, and answering any questions you might have.
77 services45 patients
Established patient office or other outpatient visit with low level od decision making, if using time, 20 minutes or more 99213
This is a routine visit for patients who have already been seen by the healthcare provider. During this approximately 20-29 minute appointment, your health status will be evaluated and any necessary treatments or tests will be discussed. It's a chance to address any health concerns you may have.
55 services53 patients
Needle measurement of electrical activity in arm or leg muscles, complete study 95886
This procedure, known as an electromyography (EMG), involves inserting a small needle into your arm or leg muscles to measure their electrical activity. This complete study helps diagnose issues with nerves or muscles, providing valuable data for your treatment plan.
42 services20 patients
Subsequent hospital care with straightforward or low level of medical decision making, per day, if using time, at least 25 minutes 99231
Follow-up hospital inpatient care is a daily service where a healthcare professional checks on your health progress during your hospital stay. Each session typically lasts 15 minutes, involving updates on your condition and adjustments to your treatment plan, if necessary.
41 services38 patients

Physician Visit Costs CMS claims · ZIP area

Typical Medicare office-visit costs in the 48088 ZIP code area, from fee-for-service claims. These are area statistics, not this provider’s prices; actual charges vary by service and coverage.

New Patient
$134.28 typical visit price
range $58.04 – $177.36
Typical copayment $33.57 (range $14.51 – $44.34)
Most-billed visit code 99204
Established Patient
$102.35 typical visit price
range $18.32 – $143.49
Typical copayment $25.58 (range $4.58 – $35.87)
Most-billed visit code 99214
Amounts reflect what Medicare beneficiaries in this ZIP area are typically charged for office visits. Patients with other coverage should check their individual plans.

Other Providers at the Same Location NPPES 7

Providers registered at the same practice address, or within the immediate area, according to the NPPES registry.

DR. JULIE L HENRY-KELLY MD
Orthopaedic Surgery
27427 SCHOENHERR RD, SUITE 200
WARREN, MI 48088
Macomb County (586) 754-4417
CHAKRAPANI RANGANATHAN M.D.
Psychiatry & Neurology (Neurology)
27427 SCHOENHERR RD, STE 100
WARREN, MI 48088
Macomb County (586) 756-5500
ASSURED HEALTH CARE SERVICES, INC.
Home Health
27427 SCHOENHERR RD, SUITE 400
WARREN, MI 48088
Macomb County (586) 497-8600
DR. DARLENE ANN SWIDERSKI PH.D.
Psychologist (Rehabilitation)
27427 SCHOENHERR RD, SUITE 200
WARREN, MI 48088
Macomb County (586) 773-1900
DR. ALLEN P DENYS M.D.
Internal Medicine (Sleep Medicine)
27427 SCHOENHERR RD, SUITE 100
WARREN, MI 48088
Macomb County (519) 258-0585
REHABILITATION SPECIALISTS OF LIVINGSTON COUNTY, INC.
Physical Therapist
27427 SCHOENHERR RD, SUITE 200
WARREN, MI 48088
Macomb County (586) 757-9311
JULIE L. HENRY, M.D, P.C.
Neuromusculoskeletal Medicine, Sports Medicine
27427 SCHOENHERR RD, SUITE 200
WARREN, MI 48088
Macomb County (586) 547-4417

Frequently Asked Questions NPPES & CMS

Common questions about this NPI record, answered from the official NPPES registry and CMS datasets shown on this page.

What is Thomas Oneil's NPI number?

The NPI number for Thomas Oneil is 1023090552. It was assigned to this individual provider in the NPPES registry on November 18, 2005.

Where is Thomas Oneil located?

Thomas Oneil practices at 27427 Schoenherr Rd Ste 100, Warren, MI 48088. The listed phone number is (586) 756-5500.

What is Thomas Oneil's specialty?

The primary specialty registered for this NPI is Psychiatry & Neurology, specializing in Neurology, with taxonomy code 2084N0400X.

Is Thomas Oneil enrolled in Medicare?

Yes. Thomas Oneil is registered in the Medicare PECOS enrollment system.

Which organizations bill Medicare for Thomas Oneil's services?

According to the CMS Revalidation Reassignment List (October 2026 release), Thomas Oneil reassigns Medicare benefits to 3 organizations: Macomb Neurology Associates PC (Warren, MI), Henry Ford Health Macomb Oakland Hospital (Warren, MI) and Michigan Healthcare Professionals, P.C. (Warren, MI). Each reassignment is filed with Medicare on form CMS-855R, signed by both the clinician and the organization, and lets the organization bill Medicare and receive payment for Thomas Oneil's services. Reassignment records can lag staffing changes; confirm current arrangements with the organization.

What insurance does Thomas Oneil accept?

Health plans from McLaren Health Plan Community list Thomas Oneil as in-network in at least one marketplace plan. Coverage varies by plan and year; verify with the insurer or the provider before a visit.

When was this NPI record last updated?

The NPPES record for Thomas Oneil was last updated on December 20, 2022. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 3 years ago. If this record has changed at CMS more recently, you can request an on-demand re-check against the live CMS registry, directly from this page.