Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum
Dr. Michael J Oreilly, M.D.
Surgery Physician in Marietta, GA · enumerated 2007.
Data current as of Jul 13, 2026 · sourced from CMS NPPES
National Provider Identifier
1548300015
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Registry record
Entity type Individual (Type 1)
Name Dr. Michael J Oreilly
Credential M.D.
Sex Male
Practice address 800 Canton Rd Ne, Marietta, GA, 30060
Phone (770) 424-4328
Fax (770) 426-9924
Enumeration date Feb 7, 2007
Last updated in NPPES Oct 11, 2019
Taxonomy & licenses
MD · Doctor of Medicine: A physician who completed medical school (allopathic medicine), residency training, and state licensure.
About the MD credential
What is an NPI number?
A National Provider Identifier (NPI) is a unique 10-digit number that CMS assigns to every U.S. healthcare provider and organization under HIPAA. Type 1 NPIs identify individual providers; Type 2 NPIs identify organizations. The NPI appears on insurance claims, prescriptions, and credentialing paperwork, and never changes, even if the provider moves or changes specialty.
Frequently asked questions
Where does Michael Oreilly practice?
The practice location on file with NPPES is in Marietta, GA. Providers can have multiple locations; NPPES lists the primary practice address.
What is the NPI number for Michael Oreilly?
The National Provider Identifier (NPI) for Michael Oreilly is 1548300015, a Type 1 (individual) record in the CMS NPPES registry.
Other providers at this practice address
Browse all →Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2019-10-11.