Thomas J. O'Neill, MD
Internal Medicine Physician · Chapel Hill, NC
Thomas J. O'Neill, MD is an internal medicine physician with a practice address in Chapel Hill, North Carolina, and NPI 1639373327, issued on Jun 14, 2007. Check the license (North Carolina 141369, as entered in NPPES) on the North Carolina Medical Board; the Medicare figures below come from public CMS files.
- Name
- Thomas J. O'Neill
- Credential
- MD
- Primary taxonomy
- Internal Medicine Physician 207R00000X
- License number
- 141369 NC
Self-reported in NPPES; status is on the state search - Practice location
- 3100 Acc Building, Unc CH, Chapel Hill, NC 27599
- Phone
- (919) 966-6989
- Enumerated
- Jun 14, 2007
- Record last updated
- Jul 30, 2013 (not updated in 13 years: call before relying on the address or phone)
- Fax
- (919) 843-9355
- Medicare enrollment
- Enrolled (PECOS I20220709000582); accepts Medicare assignment
- Medical or professional school
- University Of Virginia School Of Medicine, 2007
- Entity
- Type 1 · individual
8 nearest internal medicine physician records → All 4,056 in North Carolina → Look up another NPI →
Also registered at 3100 Acc Building, Unc CH
A shared address usually means a shared clinic or building; it does not show who employs whom.
- Anne Peery, M.D.Gastroenterology Physician1790986974
Verify Thomas J. O'Neill in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersNorth Carolina Medical Board
Search for license 141369Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
54% fewer Medicare Part D claims than the average internal medicine physician in 2024
1,452 Medicare Part D claims for 209 beneficiaries, against an average of 3,176 among the 108,855 providers of this specialty who prescribed in Part D.
Most prescribed
- Spironolactone218 claims
- Metoprolol Succinate123 claims
- Jardiance93 claims
- Furosemide90 claims
- Entresto72 claims
- Atorvastatin Calcium60 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.
The MIPS final score for 2023 (Medicare payment program): 90.9 of 100
The Merit-based Incentive Payment System score is reported for this clinician. Four categories are weighted into the final score; the average among 454,083 clinicians with a measured score was 83.5.
Source: CMS Quality Payment Program, MIPS performance year 2023; category weights for 2023 (qpp.cms.gov).
Industry payments in 2024: $89.94
1 payment: food and beverage; the largest payer was Zoll Services LLC (a/k/a Zoll LifeCor Corp). The 50,334 providers of this specialty with any payment received $1,303.06 on average. Payments are reported by manufacturers, not by the provider, and are not a sign of wrongdoing.
Source: CMS Open Payments, program year 2024 (openpaymentsdata.cms.gov); average among providers of this specialty with at least one payment.
Bills Medicare through one group practice
- University Hospitals Medical Group IncCleveland, OH
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
Thomas J. O'Neill among 4,056 internal medicine physician records in North Carolina
Thomas J. O'Neill, MD is one of 4,056 internal medicine physician records with a practice address in North Carolina. 82% of them appear in a Medicare file (Part D prescribing, MIPS, Open Payments or Medicare group billing); this one does. Its NPI, issued in 2007, is newer than 48% of them.
- NPI issued2007 · 48% of these records are older, 43% newer
- In a Medicare fileYes · 82% of these records are
- In the CMS Doctors and Clinicians fileYes · 67% of these records are
- Graduated2007 · median 2004 among the 2,706 with a school on file
- Record last updated2013 · 48% of these records were not updated in five years or more
Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 207R00000X and a North Carolina practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
219 internal medicine physician records list a practice address in Chapel Hill
They are 219 of the 7,608 NPPES records with a practice address in Chapel Hill, and 4,056 internal medicine physician records in North Carolina.
All 4,056 in North Carolina → Every provider in Chapel Hill → Internal Medicine Physician nationwide →
The 8 internal medicine physician records with the nearest ZIP codes
- Marco Aleman, MDChapel Hill, NC 275991275558520
- Timothy Carey, MDChapel Hill, NC 275991407871759
- Paul Chelminski, MDChapel Hill, NC 275991609891969
- Cristin Colford, MDChapel Hill, NC 275991801829478
- Darren Dewalt, MDChapel Hill, NC 275991962435537
- James Evans, MDChapel Hill, NC 275991932124203
- Russell Harris, MDChapel Hill, NC 275991083639355
- Thomas Keyserling, MDChapel Hill, NC 275991336164615
Common questions
What is Thomas J. O'Neill, MD's NPI number?
Thomas J. O'Neill, MD's National Provider Identifier (NPI) is 1639373327, issued on Jun 14, 2007. An NPI identifies a provider in billing; it is not a license.
Where is Thomas J. O'Neill, MD located?
The NPPES record lists a practice address at 3100 Acc Building, Unc CH, Chapel Hill, NC, 27599. Phone: (919) 966-6989. Providers update this record themselves, so call before visiting.
How can I verify Thomas J. O'Neill, MD's license?
NPPES lists North Carolina license number 141369, as entered by the provider. Search the North Carolina Medical Board at https://portal.ncmedboard.org/verification/search.aspx. The NPPES record confirms identity only; the state search shows license status, expiration and public orders.
How much does Thomas J. O'Neill, MD prescribe under Medicare Part D?
In 2024, Thomas J. O'Neill, MD had 1,452 Medicare Part D claims for 209 beneficiaries; the average among internal medicine physician prescribers was 3,176. Part D covers Medicare prescriptions only.
What is Thomas J. O'Neill, MD's MIPS final score?
The 2023 MIPS final score is 90.9 of 100. The average among 454,083 clinicians with a measured score was 83.5.
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.
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.