Terence O'Neill, M.D.
NPI 1275560666 · Internal Medicine Physician · Lexington, KY
Enrolled with Medicare as Practitioner - Internal Medicine · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Terence O'Neill, M.D. is a Internal Medicine Physician provider in Lexington, KY (NPI 1275560666).
Provider details
- NPI number
- 1275560666
- Entity type
- Individual
- Primary specialty
- Internal Medicine PhysicianAllopathic & Osteopathic Physicians
- Credential
- M.D.
- Sex
- Male
- Sole proprietor
- No
- License
- 27683 (KY)
Specialties & taxonomies
Allopathic & Osteopathic Physicians
Profile Score
A profile completeness & documented-activity index — NOT a quality, outcomes, or patient-satisfaction rating.
- Registry tenure28% of score
19 yrs in NPPES registry
- Profile completeness28% of score
100% of core fields populated
- Practice footprint17% of score
1 documented practice location
- Medicare service volume (vs. specialty peers)28% of score
281 Medicare services, 2024 (ranked within specialty)
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 methodology.
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) |
|---|---|---|
| Established Patient Office Or Other Outpatient Visit With Moderate Level of Decision Making, If Using Time, 30 Minutes Or More99214 | 132 | $96 |
| Established Patient Office Or Other Outpatient Visit With Low Level OD Decision Making, If Using Time, 20 Minutes Or More99213 | 96 | $65 |
| Annual Wellness Visit, Includes a Personalized Prevention Plan of Service (pps), Subsequent VisitG0439 | 53 | $129 |
Typical Medicare-allowed amounts for these services range $65–$129 (2024). The Medicare-allowed amount is what Medicare recognizes for a service under fee-for-service — a reference figure for 2024, not a price quote and not what you would be billed. Medicare Part B covers roughly an eighth of all NPIs (65+ skew); services with fewer than 11 beneficiaries are suppressed by CMS. Source: CMS Medicare Physician & Other Practitioners, by Provider & Service.
What this provider prescribes (Medicare Part D)
Top drugs by Medicare Part D claim volume, 2024 · 64 distinct drugs on file.
| Drug | Part D claims (2024) | Beneficiaries |
|---|---|---|
| Atorvastatin Calcium | 244 | 64 |
| Lisinopril | 134 | 42 |
| Levothyroxine Sodium | 122 | 29 |
| Gabapentin | 111 | 21 |
| Amlodipine Besylate | 104 | 33 |
| Rosuvastatin Calcium | 87 | 25 |
| Omeprazole |
Practice location
Mailing address
Registry dates
- Enumerated
- 2006-06-28
- Last updated
- 2017-01-10
Frequently asked questions
- What is Terence O'Neill's NPI number?
- Terence O'Neill's National Provider Identifier (NPI) is 1275560666, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Terence O'Neill's specialty?
- Terence O'Neill is listed in the NPPES registry with a primary specialty of Internal Medicine Physician (Allopathic & Osteopathic Physicians).
- Where is Terence O'Neill located?
- Terence O'Neill's practice location on file with NPPES is University of Kentucky General Internal Med, Lexington, KY 40536-0001.
- What is Terence O'Neill's phone number?
- The practice phone number listed in the NPPES registry for Terence O'Neill is (859) 257-1000.
- Does Terence O'Neill accept Medicare?
- Terence 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 Terence O'Neill's NPI active?
- Yes — Terence O'Neill's NPI (1275560666) is active in the NPPES registry as of the last update on 2017-01-10.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.