Thomas O'Neill, MD
NPI 1639373327 · Internal Medicine Physician · Chapel Hill, NC
Enrolled with Medicare as Practitioner - Advanced Heart Failure and Transplant Cardiology · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Thomas O'Neill, MD is a Internal Medicine Physician provider in Chapel Hill, NC (NPI 1639373327).
Provider details
- NPI number
- 1639373327
- Entity type
- Individual
- Primary specialty
- Internal Medicine PhysicianAllopathic & Osteopathic Physicians
- Credential
- MD
- Sex
- Male
- Sole proprietor
- No
- License
- 141369 (NC)
Specialties & taxonomies
Allopathic & Osteopathic Physicians
Profile Score
A profile completeness & documented-activity index — NOT a quality, outcomes, or patient-satisfaction rating.
- Registry tenure25% of score
19 yrs in NPPES registry
- Profile completeness25% of score
100% of core fields populated
- Practice footprint15% of score
1 documented practice location
- Medicare service volume (vs. specialty peers)25% of score
537 Medicare services, 2024 (ranked within specialty)
- Open Payments transparency10% of score
Has Open Payments disclosures (2024)
Medicare volume is ranked against active providers in the same specialty. Signals a provider has no public data for (e.g. Medicare claims) are left out of the score entirely — never counted as zero — so providers without that data are not penalized. See the full formula and weights in our .
What this provider does (Medicare)
Based on Medicare fee-for-service claims, 2024; not all care is captured.
| Service (HCPCS) | Medicare services | Typical Medicare-allowed (2024) |
|---|---|---|
| Subsequent Hospital Care With Moderate Levelof Medical Decision Making, If Using Time, at Least 35 Minutes99232 | 125 | $75 |
| Established Patient Office Or Other Outpatient Visit With Moderate Level of Decision Making, If Using Time, 30 Minutes Or More99214 | 104 | $92 |
| Critical Care, First 30-74 Minutes99291 | 100 | $202 |
| Established Patient Office Or Other Outpatient Visit With High Level of Medical Decision Making, If Using Time, 40 Minutes Or More99215 | 62 | $135 |
| Visit Complexity Inherent to Evaluation and Management Associated With Medical Care Services That Serve As the Continuing Focal Point for All Needed Health Care Services And/Or With Medical Care Services That Are Part of Ongoing Care Related to a Patient'SG2211 | 57 | $16 |
| Subsequent Hospital Care With Moderate Levelof Medical Decision Making, If Using Time, at Least 50 Minutes |
What this provider prescribes (Medicare Part D)
Top drugs by Medicare Part D claim volume, 2024 · 30 distinct drugs on file.
| Drug | Part D claims (2024) | Beneficiaries |
|---|---|---|
| Spironolactone | 218 | 75 |
| Metoprolol Succinate | 123 | 46 |
| Empagliflozinbrand: Jardiance | 93 | 26 |
| Furosemide | 90 | 29 |
| Sacubitril/Valsartanbrand: Entresto | 72 | 29 |
| Atorvastatin Calcium | 60 | 22 |
| Torsemide | 58 |
Transparency — industry payments
Based on CMS Open Payments, 2024; not all care is captured.
$90 across 1 record (Open Payments 2024)
Open Payments discloses payments and transfers of value (meals, travel, consulting, research, royalties) from drug and device makers to providers. This is a transparency signal, not a verdict — such payments are legal and common, and their presence is neither an endorsement nor a criticism. Source: CMS Open Payments, program year 2024.
Practice location
Mailing address
Registry dates
- Enumerated
- 2007-06-14
- Last updated
- 2013-07-30
Frequently asked questions
- What is Thomas O'Neill's NPI number?
- Thomas O'Neill's National Provider Identifier (NPI) is 1639373327, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Thomas O'Neill's specialty?
- Thomas O'Neill is listed in the NPPES registry with a primary specialty of Internal Medicine Physician (Allopathic & Osteopathic Physicians).
- Where is Thomas O'Neill located?
- Thomas O'Neill's practice location on file with NPPES is 3100 Acc Building, Unc Ch, Chapel Hill, NC 27599-7705.
- What is Thomas O'Neill's phone number?
- The practice phone number listed in the NPPES registry for Thomas O'Neill is (919) 966-6989.
- Does Thomas O'Neill accept Medicare?
- Thomas O'Neill is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Thomas O'Neill's NPI active?
- Yes — Thomas O'Neill's NPI (1639373327) is active in the NPPES registry as of the last update on 2013-07-30.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.