NPPES file of Aug 9, 2026

Thomas A. O'Neil, M.D.

Family Medicine Physician · Livonia, MI

Thomas A. O'Neil, M.D. is a family medicine physician with a practice address in Livonia, Michigan, and NPI 1407019136, issued on Jul 2, 2008. Check the license (Michigan 4301092471, as entered in NPPES) on the Michigan Board of Medicine (LARA); the Medicare figures below come from public CMS files.

Record from CMS NPPES, file of Aug 9, 2026 · Medicare files 2024 · method · Verify with CMS →

NPPES recordNPPES file of Aug 9, 2026
1407019136
Name
Thomas A. O'Neil
Credential
M.D.
Primary taxonomy
Family Medicine Physician 207Q00000X
License number
4301092471 MI
Self-reported in NPPES; status is on the state search
Practice location
20321 Farmington Road, Livonia, MI 48152
Phone
(248) 888-9000
Enumerated
Jul 2, 2008
Record last updated
Oct 10, 2014 (not updated in 12 years: call before relying on the address or phone)
Medicare enrollment
Enrolled (PECOS I20110926000755); accepts Medicare assignment
Medical or professional school
Wayne State University School Of Medicine, 2008
Entity
Type 1 · individual
Public record from CMS NPPES (open it on the CMS NPI Registry). Enrollment, assignment, school and telehealth: CMS Doctors and Clinicians file, Aug 2026. A record is not a license: verify it with the state board.
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Also registered at 20321 Farmington Road

A shared address usually means a shared clinic or building; it does not show who employs whom.

  1. Elizabeth Jones, M.D.Family Medicine Physician1033372156
  2. Beth Lacasse, MSWClinical Social Worker1851600472
  3. Christine Medaugh, MDFamily Medicine Physician1972866648
  4. Tabitha Putrus, NPNurse Practitioner1780083576
  5. Justine Wu, MDFamily Medicine Physician1790897379

Verify Thomas A. O'Neil in five checks

  1. 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
  2. 2LicenseActive license and public ordersMichigan Board of Medicine (LARA)
    Search for license 4301092471    Check the board
  3. 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
  4. 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
  5. 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
Open the Michigan license search

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86% fewer Medicare Part D claims than the average family medicine physician in 2024

499 Medicare Part D claims for 170 beneficiaries, against an average of 3,544 among the 117,163 providers of this specialty who prescribed in Part D. 47 claims were for opioids.

  1. Thomas O'Neil499
  2. Specialty average3,544

Most prescribed

  1. Atorvastatin Calcium34 claims
  2. Levothyroxine Sodium30 claims
  3. Myrbetriq20 claims
  4. Clonazepam16 claims
  5. Methadone Hcl15 claims
  6. Montelukast Sodium15 claims

Source: CMS Medicare Part D Prescribers by Provider and Drug, 2024 (data.cms.gov). Part D covers prescriptions for Medicare patients only; drugs with fewer than 11 claims are not published.

Bills Medicare through one group practice

  1. Hospice Care OF Southwest MichiganKalamazoo, MI

Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).

87 family medicine physician records list a practice address in Livonia

They are 87 of the 4,733 NPPES records with a practice address in Livonia, and 6,013 family medicine physician records in Michigan.

All 87 in Livonia → All 6,013 in Michigan → Every provider in Livonia →

Other family medicine physician records in Michigan

  1. Asma AbbasHamtramck, MI1982946463
  2. Saadia Abbas, MDChesterfield, MI1619136868
  3. Faezeh AbbasiMonroe, MI1144065921
  4. Layla Abbasi, MDWayne, MI1346177607
  5. Marisa Abbo, DORochester Hills, MI1184605388
  6. Cathleen Abbott, M.D.East Lansing, MI1275630501
  7. Leah Abbott, MDGwinn, MI1760987341
  8. Nina Abboud, DORochester Hills, MI1639750557
  9. Ryan Abboud, DOBingham Farms, MI1104353077
  10. Christina Abd, MDSterling Heights, MI1770371965

Common questions

What is Thomas A. O'Neil, M.D.'s NPI number?

Thomas A. O'Neil, M.D.'s National Provider Identifier (NPI) is 1407019136, issued on Jul 2, 2008. An NPI identifies a provider in billing; it is not a license.

Where is Thomas A. O'Neil, M.D. located?

The NPPES record lists a practice address at 20321 Farmington Road, Livonia, MI, 48152. Phone: (248) 888-9000. Providers update this record themselves, so call before visiting.

How can I verify Thomas A. O'Neil, M.D.'s license?

NPPES lists Michigan license number 4301092471, as entered by the provider. Search the Michigan Board of Medicine (LARA) at https://aca-prod.accela.com/MILARA/GeneralProperty/PropertyLookUp.aspx?isLicensee=Y&TabName=APO. The NPPES record confirms identity only; the state search shows license status, expiration and public orders.

How much does Thomas A. O'Neil, M.D. prescribe under Medicare Part D?

In 2024, Thomas A. O'Neil, M.D. had 499 Medicare Part D claims for 170 beneficiaries; the average among family medicine physician prescribers was 3,544. Part D covers Medicare prescriptions only.

Source: CMS National Plan and Provider Enumeration System (NPPES), file of Aug 9, 2026 (NPPES files on CMS.gov); NUCC Health Care Provider Taxonomy. Medicare files from data.cms.gov. An NPI identifies who bills; it is not a license.

Written with AI tools from the named public files; every figure is computed from those files (how it is made).

Figures on PlainDoctor are read from the federal files each page names (CMS NPPES, Medicare Part D, MIPS, Open Payments; the HHS-OIG exclusion list only as counts) and from Census population estimates, with the file date shown beside them. See our editorial standards & corrections policy, the methodology behind these numbers, or report a data error. Data current as of Aug 9, 2026.