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

James Alton Williams, MD

Individual provider Pediatric Hematology & Oncology Physician · NPI 1316930837

James Alton Williams, MD is a Hematology in Mesa, Arizona. Graduated from Wayne State University School of Medicine in 1993, 33 years ago. Practices with Phoenix Children's Hospital, a 430-clinician group and accepts Medicare assignment. Licensed in Arizona.

Years since qualifying
33
Trained at
Wayne State University School of Medicine
Licensed in
AZ
In the registry since
2005
What do these letters mean?
MD — Doctor of Medicine
A physician who completed allopathic medical school.

See every abbreviation used in this directory →

Practice location Address checks out

5131 E Southern Ave
Mesa, AZ 85206-2799
Phone: (602) 546-0920
Fax: (602) 546-0276
Show map & directions

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

Specialties & licences

Pediatric Hematology & Oncology Physician (primary) Taxonomy 2080P0207X · Licence 333911 (AZ)

Record details

NPI number1316930837
Entity typeIndividual (Type 1)
GenderMale
Credentials MD
Sole proprietorNo
NPI enumeratedAugust 30, 2005
Last updated in NPPESSeptember 13, 2017
Mailing address3200 E Camelback Rd, Ste 250, Phoenix, AZ 85018-2327

Medicare enrollment

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

Medicare specialtyHEMATOLOGY
Also practisesPEDIATRIC MEDICINE
Medical schoolWAYNE STATE UNIVERSITY SCHOOL OF MEDICINE
Graduated 1993 (33 years in practice)
Group practice Phoenix Children'S Hospital — 430 clinicians
Accepts Medicare assignment Yes — accepts the Medicare-approved amount
Practice locations4 on file with Medicare

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