Dena Witthaus D.O.
About this NPIWhat this record shows.
NPI 1528354966 is registered to Dena Witthaus D.O., a Internal Medicine practising at 19500 Se Stark St in Portland, Oregon. Internal Medicine physicians (internists) specialise in the prevention, diagnosis, and treatment of diseases in adults, often coordinating care across multiple subspecialties. Dena Witthaus D.O. has been enumerated in the National Provider Identifier (NPI) registry since 2011.
Your brand here.
Medicare enrollment
This provider holds 2 Medicare enrollments 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
- I20140905002538Internal MedicineOR
- I20241014001464Internal MedicineWA
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 Dena Witthaus D.O. accepts. To confirm in-network status with your specific health plan, contact Dena Witthaus D.O. directly at (800) 813-2000.
Frequently asked
Yes. NPI 1528354966 is registered as Active in the CMS NPPES public registry and passes the Luhn check-digit validation that all 10-digit NPIs use.
Internal Medicine physicians (internists) specialise in the prevention, diagnosis, and treatment of diseases in adults, often coordinating care across multiple subspecialties.
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 (800) 813-2000.
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. Dena Witthaus D.O. is a Type-1 individual NPI.