Dr. Dirk Diefendorf M.D.
About this NPIWhat this record shows.
NPI 1467559443 is registered to Dr. Dirk Diefendorf M.D., a Sports Medicine (Neuromusculoskeletal Medicine) Physician practising at 101 S Ellsworth Ave, Suite 607 in San Mateo, California. Sports Medicine (Neuromusculoskeletal Medicine) Physician is a recognised medical specialty under the National Uniform Claim Committee (NUCC) taxonomy. Dr. Dirk Diefendorf M.D. has been enumerated in the National Provider Identifier (NPI) registry since 2006.
Your brand here.
Medicare enrollment
This provider holds a Medicare enrollment 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
- I20101013000318Orthopedic SurgeryCA
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 Dr. Dirk Diefendorf M.D. accepts. To confirm in-network status with your specific health plan, contact Dr. Dirk Diefendorf M.D. directly at (650) 347-0157.
Frequently asked
Yes. NPI 1467559443 is registered as Active in the CMS NPPES public registry and passes the Luhn check-digit validation that all 10-digit NPIs use.
Sports Medicine (Neuromusculoskeletal Medicine) Physician 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 (650) 347-0157.
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. Dirk Diefendorf M.D. is a Type-1 individual NPI.