Joseph Knapp MD
About this NPIWhat this record shows.
NPI 1588636492 is registered to Joseph Knapp MD, a Cardiovascular Disease practising at 1100 9th Ave in Seattle, Washington. Cardiology is a medical specialty focused on disorders of the heart and blood vessels, including coronary artery disease, heart failure, arrhythmias, and hypertension. Joseph Knapp MD has been enumerated in the National Provider Identifier (NPI) registry since 2006.
Beyond the registryWhat this record adds.
This record carries 2 secondary identifiers beyond the base NPI: Medicaid and other payer cross-references used by billers and credentialers, which the standard CMS NPPES lookup does not surface. Within the directory it is one of 590 Cardiovascular Disease providers on file in Washington.
Source: CMS NPPES and PECOS public files. snapshot, refreshed monthly.
Your brand here.
Secondary identifiers
Additional identifiers this provider has registered with NPPES. Used by medical billers, credentialers, and insurance verifiers to cross-reference claims and enrollments.
Other
- 3478KNWA· Issued by INDIVIDUAL BLUE SHIELD
Medicaid
- 8358293WA
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 Joseph Knapp MD accepts. To confirm in-network status with your specific health plan, contact Joseph Knapp MD directly at (206) 223-6600.
Frequently asked
Yes. NPI 1588636492 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 (206) 223-6600.
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. Joseph Knapp MD is a Type-1 individual NPI.
As of the latest monthly CMS NPPES snapshot, 590 Cardiovascular Disease providers are registered in Washington, and Joseph Knapp MD is one of them. The figure refreshes each month from the federal source.