John S Gregg MD
About this NPIWhat this record shows.
NPI 1588686398 is registered to John S Gregg MD, a healthcare organisation classified as "Cardiovascular Disease" and located at 15 S 8th St in Indiana, Pennsylvania. The organisation's authorised official is John Gregg. The organisation has been enumerated in the NPI registry since 2006.
Your brand here.
Insurance & acceptsHow to confirm coverage.
The National Plan and Provider Enumeration System (NPPES) registry does not include commercial insurance network data, so we cannot show which plans John S Gregg MD accepts. To confirm in-network status with your specific health plan, contact John S Gregg MD directly at (724) 463-9700.
Frequently asked
Yes. NPI 1588686398 is registered as Active in the CMS NPPES public registry and passes the Luhn check-digit validation that all 10-digit NPIs use.
Cardiology is a medical specialty focused on disorders of the heart and blood vessels, including coronary artery disease, heart failure, arrhythmias, and hypertension.
The CMS NPPES Public Registry at npiregistry.cms.hhs.gov is the authoritative source. FindMyNPI mirrors this dataset and refreshes monthly. For real-time verification, you can also call the provider's office at (724) 463-9700.
An individual healthcare provider has a single Type-1 NPI for life. Organisations can hold separate Type-2 NPIs per location, specialty, or sub-entity. John S Gregg MD is a Type-2 organisational NPI.