Michael Liam O'Byrne, M.D.
Pediatric Cardiology Physician · Philadelphia, PA
Michael Liam O'Byrne, M.D. is a pediatric cardiology physician with a practice address in Philadelphia, Pennsylvania, and NPI 1891992152, issued on Jun 29, 2007. Check the license (Pennsylvania MD439352, as entered in NPPES) on the Pennsylvania Department of State (PALS); the Medicare figures below come from public CMS files.
- Name
- Michael Liam O'Byrne
- Credential
- M.D.
- Primary taxonomy
- Pediatric Cardiology Physician 2080P0202X
- License number
- MD439352 PA
Self-reported in NPPES; status is on the state search - Practice location
- 3401 Civic Center Blvd, Philadelphia, PA 19104
- Phone
- (215) 590-1000
- Enumerated
- Jun 29, 2007
- Record last updated
- Nov 18, 2013 (not updated in 13 years: call before relying on the address or phone)
- Fax
- (215) 590-2204
- Medicare enrollment
- Enrolled (PECOS I20140219001909); accepts Medicare assignment
- Medical or professional school
- Columbia University College Of Physicians And Surgeons, 2007
- Entity
- Type 1 · individual
8 nearest pediatric cardiology physician records → All 178 in Pennsylvania → Look up another NPI →
Also registered at 3401 Civic Center Blvd
A shared address usually means a shared clinic or building; it does not show who employs whom.
- Ruth Abaya, MD, MPHPediatric Emergency Medicine (Pediatrics) Physician1891923306
- Soraya Abbasi, MDNeonatal-Perinatal Medicine Physician1396780789
- Javaneh Abbasian, M.DOphthalmology Physician1790951036
- Arlene Abelard-Daniel, CRNPPediatric Nurse Practitioner1639599764
- Margarita Abella, MDPediatrics Physician1609338300
- Nicholas Abend, MDNeurology with Special Qualifications in Child Neurology Physician1679638969
Verify Michael Liam O'Byrne in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersPennsylvania Department of State (PALS)
Search for license MD439352Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
Bills Medicare through one group practice
- Childrens Health Care Associates IncPhiladelphia, PA
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
Michael Liam O'Byrne among 178 pediatric cardiology physician records in Pennsylvania
Michael Liam O'Byrne, M.D. is one of 178 pediatric cardiology physician records with a practice address in Pennsylvania. 58% 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, 47% newer
- In a Medicare fileYes · 58% of these records are
- In the CMS Doctors and Clinicians fileYes · 47% of these records are
- Graduated2007 · median 2003 among the 84 with a school on file
- Record last updated2013 · 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 2080P0202X and a Pennsylvania practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
Pediatric Cardiology Physician providers in Pennsylvania
There are 178 pediatric cardiology physician records in Pennsylvania.
All 178 in Pennsylvania → Every provider in Philadelphia → Pediatric Cardiology Physician nationwide →
The 8 pediatric cardiology physician records with the nearest ZIP codes
- Anirban Banerjee, MDPhiladelphia, PA 191041467411389
- Alexander Davidson, MDPhiladelphia, PA 191041235127119
- Mark Fogel, M.APhiladelphia, PA 191041164454971
- Matthew Gillespie, M.D.Philadelphia, PA 191041801815469
- David Goldberg, M.D.Philadelphia, PA 191041063447803
- Elizabeth Goldmuntz, M.D.Philadelphia, PA 191041184644312
- Matthew Harris, MDPhiladelphia, PA 191041730130220
- Fraz Ismat, M.D.Philadelphia, PA 191041548288582
Common questions
What is Michael Liam O'Byrne, M.D.'s NPI number?
Michael Liam O'Byrne, M.D.'s National Provider Identifier (NPI) is 1891992152, issued on Jun 29, 2007. An NPI identifies a provider in billing; it is not a license.
Where is Michael Liam O'Byrne, M.D. located?
The NPPES record lists a practice address at 3401 Civic Center Blvd, Philadelphia, PA, 19104. Phone: (215) 590-1000. Providers update this record themselves, so call before visiting.
How can I verify Michael Liam O'Byrne, M.D.'s license?
NPPES lists Pennsylvania license number MD439352, 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.
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.