Dr. Diane Williams DO
About this NPIWhat this record shows.
NPI 1619973351 is registered to Dr. Diane Williams DO, a Gastroenterology practising at 9701 Sw Barnes Rd, Suite 300 in Portland, Oregon. Gastroenterology is a recognised medical specialty under the National Uniform Claim Committee (NUCC) taxonomy. Dr. Diane Williams DO has been enumerated in the National Provider Identifier (NPI) registry since 2005.
Secondary identifiers
Additional identifiers this provider has registered with NPPES. Used by medical billers, credentialers, and insurance verifiers to cross-reference claims and enrollments.
Source: NPPES public registry.
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. Diane Williams DO accepts. To confirm in-network status with your specific health plan, contact Dr. Diane Williams DO directly at (503) 297-8081.
Frequently asked
Yes. NPI 1619973351 is registered as Active in the CMS NPPES public registry and passes the Luhn check-digit validation that all 10-digit NPIs use.
Gastroenterology 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 (503) 297-8081.
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. Diane Williams DO is a Type-1 individual NPI.