Liam Parker O'Neill, MBBS
Internal Medicine Physician · Philadelphia, PA
Liam Parker O'Neill, MBBS is an internal medicine physician with a practice address in Philadelphia, Pennsylvania, and NPI 1972227460, issued on Sep 28, 2022. Check the license (Pennsylvania MT227150, as entered in NPPES) on the Pennsylvania Department of State (PALS); the Medicare figures below come from public CMS files.
- Name
- Liam Parker O'Neill
- Credential
- MBBS
- Primary taxonomy
- Internal Medicine Physician 207R00000X
- License number
- MT227150 PA
Self-reported in NPPES; status is on the state search - Practice location
- 833 Chestnut St Ste 220, Philadelphia, PA 19107
- Phone
- (215) 955-8465
- Enumerated
- Sep 28, 2022
- Record last updated
- Sep 28, 2022
- Entity
- Type 1 · individual
8 nearest internal medicine physician records → All 7,300 in Pennsylvania → Look up another NPI →
Also registered at 833 Chestnut St Ste 220
A shared address usually means a shared clinic or building; it does not show who employs whom.
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Verify Liam Parker O'Neill in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersPennsylvania Department of State (PALS)
Search for license MT227150Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
85% fewer Medicare Part D claims than the average internal medicine physician in 2024
478 Medicare Part D claims for 86 beneficiaries, against an average of 3,176 among the 108,855 providers of this specialty who prescribed in Part D.
Most prescribed
- Atorvastatin Calcium40 claims
- Amlodipine Besylate36 claims
- Metoprolol Succinate23 claims
- Albuterol Sulfate Hfa22 claims
- Lisinopril21 claims
- Losartan Potassium19 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.
Industry payments in 2024: $368.30
4 payments; by number, the most common kind was food and beverage; the largest payer was Boston Scientific Corporation. 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.
Liam Parker O'Neill among 7,300 internal medicine physician records in Pennsylvania
Liam Parker O'Neill, MBBS is one of 7,300 internal medicine physician records with a practice address in Pennsylvania. 78% of them appear in a Medicare file (Part D prescribing, MIPS, Open Payments or Medicare group billing); this one does. Its NPI, issued in 2022, is newer than 85% of them.
- NPI issued2022 · 85% of these records are older, 11% newer
- In a Medicare fileYes · 78% of these records are
- In the CMS Doctors and Clinicians fileNo · 58% of these records are
- Record last updated2022 · 56% 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 Pennsylvania practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
1,855 internal medicine physician records list a practice address in Philadelphia
They are 1,855 of the 42,849 NPPES records with a practice address in Philadelphia, and 7,300 internal medicine physician records in Pennsylvania.
All 7,300 in Pennsylvania → Every provider in Philadelphia → Internal Medicine Physician nationwide →
The 8 internal medicine physician records with the nearest ZIP codes
- William Brady, MDPhiladelphia, PA 191071831187731
- Eileen Carpenter, MDPhiladelphia, PA 191071205805827
- Lillian Cohn, M.D.Philadelphia, PA 191071538160825
- Allan Crimm, M.D.Philadelphia, PA 191071720089170
- Lewis Deeugenio, M.D.Philadelphia, PA 191071780664847
- Richard Feldman, MDPhiladelphia, PA 191071417958661
- Jane Fitzpatrick, MDPhiladelphia, PA 191071003880675
- Zuleika Font, M.D.Philadelphia, PA 191071760483945
Common questions
What is Liam Parker O'Neill, MBBS's NPI number?
Liam Parker O'Neill, MBBS's National Provider Identifier (NPI) is 1972227460, issued on Sep 28, 2022. An NPI identifies a provider in billing; it is not a license.
Where is Liam Parker O'Neill, MBBS located?
The NPPES record lists a practice address at 833 Chestnut St Ste 220, Philadelphia, PA, 19107. Phone: (215) 955-8465. Providers update this record themselves, so call before visiting.
How can I verify Liam Parker O'Neill, MBBS's license?
NPPES lists Pennsylvania license number MT227150, as entered by the provider. Search the Pennsylvania Department of State (PALS) at https://www.pals.pa.gov/. The NPPES record confirms identity only; the state search shows license status, expiration and public orders.
How much does Liam Parker O'Neill, MBBS prescribe under Medicare Part D?
In 2024, Liam Parker O'Neill, MBBS had 478 Medicare Part D claims for 86 beneficiaries; the average among internal medicine physician prescribers was 3,176. 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.
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.