Liam O'Neill, MBBS
NPI 1972227460 · Internal Medicine Physician · Philadelphia, PA
Enrolled with Medicare as Order and Referring Only - Internal Medicine · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Liam O'Neill, MBBS is a Internal Medicine Physician provider in Philadelphia, PA (NPI 1972227460).
Provider details
- NPI number
- 1972227460
- Entity type
- Individual
- Primary specialty
- Internal Medicine PhysicianAllopathic & Osteopathic Physicians
- Credential
- MBBS
- Sex
- Male
- Sole proprietor
- No
- License
- MT227150 (PA)
Specialties & taxonomies
Allopathic & Osteopathic Physicians
Profile Score
A profile completeness & documented-activity index — NOT a quality, outcomes, or patient-satisfaction rating.
- Registry tenure33% of score
3 yrs in NPPES registry
- Profile completeness33% of score
100% of core fields populated
- Practice footprint20% of score
1 documented practice location
- Open Payments transparency13% of score
Has Open Payments disclosures (2024)
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 prescribes (Medicare Part D)
Top drugs by Medicare Part D claim volume, 2024 · 13 distinct drugs on file.
| Drug | Part D claims (2024) | Beneficiaries |
|---|---|---|
| Atorvastatin Calcium | 40 | 20 |
| Amlodipine Besylate | 36 | 14 |
| Metoprolol Succinate | 23 | — |
| Albuterol Sulfatebrand: Albuterol Sulfate Hfa | 22 | — |
| Lisinopril | 21 | — |
| Losartan Potassium | 19 | — |
Transparency — industry payments
Based on CMS Open Payments, 2024; not all care is captured.
$368 across 4 records (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
- 2022-09-28
- Last updated
- 2022-09-28
- Certified
- 2022-09-28
Frequently asked questions
- What is Liam O'Neill's NPI number?
- Liam O'Neill's National Provider Identifier (NPI) is 1972227460, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Liam O'Neill's specialty?
- Liam O'Neill is listed in the NPPES registry with a primary specialty of Internal Medicine Physician (Allopathic & Osteopathic Physicians).
- Where is Liam O'Neill located?
- Liam O'Neill's practice location on file with NPPES is 833 Chestnut St Ste 220, Philadelphia, PA 19107-4405.
- What is Liam O'Neill's phone number?
- The practice phone number listed in the NPPES registry for Liam O'Neill is (215) 955-8465.
- Does Liam O'Neill accept Medicare?
- Liam 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 Liam O'Neill's NPI active?
- Yes — Liam O'Neill's NPI (1972227460) is active in the NPPES registry as of the last update on 2022-09-28.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.