Dr. Katherine Williamson MD
About this NPIWhat this record shows.
NPI 1982916375 is registered to Dr. Katherine Williamson MD, a Pediatrics practising at 23321 El Toro Rd, Suite F in Lake Forest, California. Pediatrics is the medical specialty focused on the health of infants, children, and adolescents through age 21. Dr. Katherine Williamson MD has been enumerated in the National Provider Identifier (NPI) registry since 2010.
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. Katherine Williamson MD accepts. To confirm in-network status with your specific health plan, contact Dr. Katherine Williamson MD directly at (949) 388-1798.
Frequently asked
Yes. NPI 1982916375 is registered as Active in the CMS NPPES public registry and passes the Luhn check-digit validation that all 10-digit NPIs use.
Pediatrics is the medical specialty focused on the health of infants, children, and adolescents through age 21.
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 (949) 388-1798.
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. Katherine Williamson MD is a Type-1 individual NPI.