Provider records sourced from NPPES (CMS National Plan & Provider Enumeration System). Data current as of October 4, 2026.
NPIDirectory

Mark A Wix, MD

Individual provider Anesthesiology Physician · NPI 1336170356

Mark A Wix, MD practises Anesthesiology in Phoenix, Arizona. Graduated from University of Iowa, Rj & L Carver College of Medicine in 1986, 40 years ago. Practices with Valley Anesthesiology Consultants Inc, a 284-clinician group and accepts Medicare assignment. Licensed in Arizona.

Years since qualifying
40
Trained at
University of Iowa, Rj & L Carver College of Medicine
Licensed in
AZ
In the registry since
2006
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

250 E Dunlap Ave
Phoenix, AZ 85020 Not confirmed with CMS for 18 years — call before visiting
Phone: (602) 273-9333
Fax: (480) 609-9350
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Pin is approximate — placed at the ZIP-code centre, not the exact door.

Specialties & licences

Anesthesiology Physician (primary) Taxonomy 207L00000X · Licence 19315 (AZ)

Record details

NPI number1336170356
Entity typeIndividual (Type 1)
GenderMale
Credentials MD
Sole proprietorNo
NPI enumeratedJuly 6, 2006
Last updated in NPPESMay 16, 2008

Medicare enrollment

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

Medicare specialtyANESTHESIOLOGY
Medical schoolUNIVERSITY OF IOWA, RJ & L CARVER COLLEGE OF MEDICINE
Graduated 1986 (40 years in practice)
Group practice Valley Anesthesiology Consultants Inc — 284 clinicians
Accepts Medicare assignment Yes — accepts the Medicare-approved amount
Practice locations3 on file with Medicare

Medicare patients and services, 2024

From the CMS Medicare Physician & Other Practitioners file for calendar year 2024. It counts Original Medicare patients only, so a practice that mostly sees Medicare Advantage or privately insured patients looks smaller here than it is.

Medicare patients92
Services billed 133 a service is one billed item, such as a visit, a test or a procedure
Average patient age74

Dollar amounts are not shown. What Medicare pays a practice is gross billings, before staff, premises and tax and including the cost of any drugs it administers, so it is not what a clinician earns.

Practises at

Facilities the CMS Facility Affiliation file lists for this clinician.

  • Honor Health John C. Lincoln Medical Center Hospital · Phoenix, AZ

Colleagues at Valley Anesthesiology Consultants Inc

Clinicians the CMS Doctors & Clinicians file lists under the same group practice. CMS counts 284 clinicians in the practice; 12 are shown here.

Other providers in Phoenix