Hilary Lyons Oneill, M.D.
Psychiatry Physician · Phila, PA
Hilary Lyons Oneill, M.D. is a psychiatry physician with a practice address in Phila, Pennsylvania, and NPI 1104048040, issued on May 2, 2007. Check the license (Pennsylvania MD427679, as entered in NPPES) on the Pennsylvania Department of State (PALS); the Medicare figures below come from public CMS files.
- Name
- Hilary Lyons Oneill
- Credential
- M.D.
- Primary taxonomy
- Psychiatry Physician 2084P0800X
- License number
- MD427679 PA
Self-reported in NPPES; status is on the state search - Practice location
- 5501 Old York RD, Phila, PA 19141
- Phone
- (215) 456-6255
- Enumerated
- May 2, 2007
- Record last updated
- Jul 15, 2016 (not updated in 10 years: call before relying on the address or phone)
- Medicare enrollment
- Enrolled (PECOS I20100504000181); accepts Medicare assignment
- Medical or professional school
- Jefferson Medical College Of Thomas Jefferson University, 2003
- Entity
- Type 1 · individual
8 nearest psychiatry physician records → All 2,662 in Pennsylvania → Look up another NPI →
Also registered at 5501 Old York RD
A shared address usually means a shared clinic or building; it does not show who employs whom.
- Nicole Abate, MDEmergency Medicine Physician1447208939
- Oluwatimilehin Adewunmi, MD, MPHInternal Medicine Physician1093499493
- Frederic Barnett, DMDEndodontics1306904909
- Jilla Carpey, PHDPsychologist1538386941
- Daranee Chewaproug, DONephrology Physician1285884825
- Andrew Chong, MDEmergency Medicine Physician1497703961
Verify Hilary Lyons Oneill in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersPennsylvania Department of State (PALS)
Search for license MD427679Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
96% fewer Medicare Part D claims than the average psychiatry physician in 2024
38 Medicare Part D claims for 11 beneficiaries, against an average of 1,000 among the 35,054 providers of this specialty who prescribed in Part D.
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.
Bills Medicare through 2 group practices
- Einstein Practice Plan IncPhila, PA
- Inhospital Physicians CorpPhiladelphia, PA
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
Hilary Lyons Oneill among 2,662 psychiatry physician records in Pennsylvania
Hilary Lyons Oneill, M.D. is one of 2,662 psychiatry physician records with a practice address in Pennsylvania. 72% 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 39% of them.
- NPI issued2007 · 39% of these records are older, 46% newer
- In a Medicare fileYes · 72% of these records are
- In the CMS Doctors and Clinicians fileYes · 45% of these records are
- Graduated2003 · median 2003 among the 1,186 with a school on file
- Record last updated2016 · 60% of these records were not updated in five years or more
Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 2084P0800X and a Pennsylvania practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
27 psychiatry physician records list a practice address in Phila
They are 27 of the 820 NPPES records with a practice address in Phila, and 2,662 psychiatry physician records in Pennsylvania.
All 2,662 in Pennsylvania → Every provider in Phila → Psychiatry Physician nationwide →
The 8 psychiatry physician records with the nearest ZIP codes
- Norma Cruz Luna, M.D.Philadelphia, PA 191411992909733
- Abayomi Ige, M.D.Philadelphia, PA 191411184620130
- Ashika Kapoor, MDPhila, PA 191411003841503
- Mahrukh Khan, M.D.Philadelphia, PA 191411467426247
- Ajita Mathur, M.DPhiladelphia, PA 191411669416657
- Angela McCarthy, DOPhiladelphia, PA 191411558574509
- Sarah Noble, D.O.Philadelphia, PA 191411366646101
- Conrada Ola, M.D.Philadelphia, PA 191411790711547
Common questions
What is Hilary Lyons Oneill, M.D.'s NPI number?
Hilary Lyons Oneill, M.D.'s National Provider Identifier (NPI) is 1104048040, issued on May 2, 2007. An NPI identifies a provider in billing; it is not a license.
Where is Hilary Lyons Oneill, M.D. located?
The NPPES record lists a practice address at 5501 Old York RD, Phila, PA, 19141. Phone: (215) 456-6255. Providers update this record themselves, so call before visiting.
How can I verify Hilary Lyons Oneill, M.D.'s license?
NPPES lists Pennsylvania license number MD427679, 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 Hilary Lyons Oneill, M.D. prescribe under Medicare Part D?
In 2024, Hilary Lyons Oneill, M.D. had 38 Medicare Part D claims for 11 beneficiaries; the average among psychiatry physician prescribers was 1,000. 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.