William Hiser M.D.
About this NPIWhat this record shows.
NPI 1366481459 is registered to William Hiser M.D., a Cardiovascular Disease practising at 3300 Main St, 2nd Fl Suite A in Springfield, Massachusetts. Cardiology is a medical specialty focused on disorders of the heart and blood vessels, including coronary artery disease, heart failure, arrhythmias, and hypertension. William Hiser M.D. has been enumerated in the National Provider Identifier (NPI) registry since 2006.
Medicare enrollment
This provider holds a Medicare enrollment on file with the Provider Enrollment, Chain and Ownership System (PECOS). Each enrollment carries a public Medicare Enrollment ID (ENRLMT_ID) used by billers and intermediaries.
Practitioner
- I20050223000177Cardiovascular Disease (Cardiology)MA
Source: CMS PECOS public enrollment file.
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 Hiser M.D. accepts. To confirm in-network status with your specific health plan, contact William Hiser M.D. directly at (413) 794-2273.
Frequently asked
Yes. NPI 1366481459 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 (413) 794-2273.
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 Hiser M.D. is a Type-1 individual NPI.