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

Dr. William Edward Rietkerk, MDMBA

Individual provider Dermatology Physician · NPI 1720311400

Dr. William Edward Rietkerk, MDMBA is a Dermatology in Thousand Oaks, California. Graduated from University of California, Irvine, California College of Medicine in 2008, 18 years ago. Practices with J Robert West MD Inc, a 138-clinician group and accepts Medicare assignment. Licensed in California.

Years since qualifying
18
Trained at
University of California, Irvine, California College of Medicine
Licensed in
CA
In the registry since
2009

Practice location Address checks out

55 Rolling Oaks Dr Ste 200
Thousand Oaks, CA 91361-1010
Phone: (212) 661-3376
Fax: (212) 661-3366
Show map & directions

Pin is approximate — placed at the ZIP-code centre, not the exact door.

Specialties & licences

Dermatology Physician (primary) Taxonomy 207N00000X · Licence A141249 (CA)

Record details

NPI number1720311400
Entity typeIndividual (Type 1)
GenderMale
Credentials MDMBA
Sole proprietorNo
NPI enumeratedSeptember 11, 2009
Last updated in NPPESJuly 21, 2022

Medicare enrollment

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

Medicare specialtyDERMATOLOGY
Medical schoolUNIVERSITY OF CALIFORNIA, IRVINE, CALIFORNIA COLLEGE OF MEDICINE
Graduated 2008 (18 years in practice)
Group practice J Robert West Md Inc — 138 clinicians
Accepts Medicare assignment Yes — accepts the Medicare-approved amount

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