William Portner M.D.
About this NPIWhat this record shows.
NPI 1861489130 is registered to William Portner M.D., a Diagnostic Radiology practising at 181 Main St in Norway, Maine. Diagnostic Radiology uses medical imaging (X-ray, CT, MRI, ultrasound, and nuclear medicine) to diagnose disease and injury. William Portner M.D. has been enumerated in the National Provider Identifier (NPI) registry since 2005.
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 William Portner M.D. accepts. To confirm in-network status with your specific health plan, contact William Portner M.D. directly at (207) 743-5933.
Frequently asked
Yes. NPI 1861489130 is registered as Active in the CMS NPPES public registry and passes the Luhn check-digit validation that all 10-digit NPIs use.
Diagnostic Radiology uses medical imaging (X-ray, CT, MRI, ultrasound, and nuclear medicine) to diagnose disease and injury.
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 (207) 743-5933.
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. William Portner M.D. is a Type-1 individual NPI.