Dr. Graham Howerzyl DDS
About this NPIWhat this record shows.
NPI 1659217859 is registered to Dr. Graham Howerzyl DDS, a Student in an Organized Health Care Education/Training Program practising at 159 S Main Ave in Sioux Center, Iowa. Student in an Organized Health Care Education/Training Program is a recognised medical specialty under the National Uniform Claim Committee (NUCC) taxonomy. Dr. Graham Howerzyl DDS has been enumerated in the National Provider Identifier (NPI) registry since 2026.
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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 Dr. Graham Howerzyl DDS accepts. To confirm in-network status with your specific health plan, contact Dr. Graham Howerzyl DDS directly at (712) 722-2618.
Frequently asked
Yes. NPI 1659217859 is registered as Active in the CMS NPPES public registry and passes the Luhn check-digit validation that all 10-digit NPIs use.
Student in an Organized Health Care Education/Training Program is a recognised medical specialty under the National Uniform Claim Committee (NUCC) taxonomy.
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 (712) 722-2618.
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. Dr. Graham Howerzyl DDS is a Type-1 individual NPI.