Provider records sourced from NPPES (CMS National Plan & Provider Enumeration System). Data current as of August 10, 2026.
NPIDirectory

Willem J Van der Werf, MD

Individual provider Specialist · NPI 1275563397

Willem J Van der Werf, MD is a General Surgery in Phoenix, Arizona. Graduated from University of California, San Francisco School of Medicine in 1988, 38 years ago. Practices with Arizona Transplant Associates PC, a 5-clinician group, works from 2 locations and accepts Medicare assignment. Licensed in Arizona and Utah.

Years since qualifying
38
Trained at
University of California, San Francisco School of Medicine
Licensed in
AZ, UT
In the registry since
2006
Specialties on file
2
What do these letters mean?
MD — Doctor of Medicine
A physician who completed allopathic medical school.

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Practice location Address checks out

2218 N 3rd St
Phoenix, AZ 85004-1401
Phone: (602) 252-2543
Fax: (602) 252-3861
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Pin is approximate — placed at the ZIP-code centre, not the exact door.

Additional practice locations (1)

  • 500 W Thomas Rd Ste 300, Phoenix, AZ 85013-4294 — (602) 406-8000

Specialties & licences

Transplant Surgery Physician (primary) Taxonomy 204F00000X · Licence 49927 (AZ)
Specialist Taxonomy 174400000X · Licence 5249271205 (UT)

Record details

NPI number1275563397
Entity typeIndividual (Type 1)
GenderMale
Credentials MD
Sole proprietorNo
NPI enumeratedJuly 4, 2006
Last updated in NPPESNovember 12, 2024
Certification dateNovember 12, 2024

Medicare enrollment

From the CMS Doctors & Clinicians file — this clinician is enrolled in Medicare.

Medicare specialtyGENERAL SURGERY
Medical schoolUNIVERSITY OF CALIFORNIA, SAN FRANCISCO SCHOOL OF MEDICINE
Graduated 1988 (38 years in practice)
Group practice Arizona Transplant Associates Pc — 5 clinicians
Accepts Medicare assignment Yes — accepts the Medicare-approved amount
Practice locations2 on file with Medicare

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