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

Amy Jo Williamson, MD

Individual provider Obstetrics & Gynecology Physician · NPI 1881656973

Amy Jo Williamson, MD practises Obstetrics/Gynecology in Phoenix, Arizona. Graduated from University of Illinois College of Med (CHI/PEOR/ROCK/Chm-Urb) in 1994, 32 years ago. Practices with Phoenix Children's Hospital, a 430-clinician group, works from 4 locations and accepts Medicare assignment. Licensed in Arizona.

Years since qualifying
32
Trained at
University of Illinois College of Med (CHI/PEOR/ROCK/Chm-Urb)
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

1919 E Thomas Rd
Phoenix, AZ 85016-7710
Phone: (602) 933-2728
Fax: (602) 933-4292
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Pin is approximate — placed at the ZIP-code centre, not the exact door.

Additional practice locations (3)

  • 500 W Thomas Rd, Phoenix, AZ 85013 — (602) 406-3715
  • 3210 Grand Ave, Phoenix, AZ 85017-4504 — (602) 406-3715
  • 16611 South 40th Street, Phoenix, AZ 85048-0566 — (480) 785-2100

Specialties & licences

Obstetrics & Gynecology Physician (primary) Taxonomy 207V00000X · Licence 24664 (AZ)

Record details

NPI number1881656973
Entity typeIndividual (Type 1)
GenderFemale
Credentials MD
Sole proprietorNo
NPI enumeratedApril 4, 2006
Last updated in NPPESDecember 11, 2024
Certification dateDecember 11, 2024

Medicare enrollment

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

Medicare specialtyOBSTETRICS/GYNECOLOGY
Medical schoolUNIVERSITY OF ILLINOIS COLLEGE OF MED (CHI/PEOR/ROCK/CHM-URB)
Graduated 1994 (32 years in practice)
Group practice Phoenix Children'S Hospital — 430 clinicians
Accepts Medicare assignment Yes — accepts the Medicare-approved amount
Practice locations3 on file with Medicare

Payments from drug and device companies, 2025

Drug and device makers are required by federal law (the Physician Payments Sunshine Act) to report what they pay or give to clinicians, and CMS publishes the reports as Open Payments. This is the 2025 program year. A report is a record of a payment, not an allegation of anything, and many are small items such as meals. Only general payments are listed here; research payments and ownership or investment interests are reported separately by CMS and are not shown.

Compensation for serving as faculty or as a speaker for a medical education program $4,662 5 payments
Food and Beverage $19 1 payment · a meal or drink at a meeting or visit, not a fee

Each amount is the sum of what companies reported for that kind of payment in 2025, rounded to the dollar. Not all of it is income to the clinician: a meal is not a fee, a charitable contribution goes to a charity, and a royalty or an acquisition payment is not a salary.

Check a report, or dispute one, at the source in CMS’s own tool, Open Payments. Corrections go through CMS’s dispute process. This site removes a home address on request and asks for no proof, because that is privacy; it will not remove an accurate payment report on request, because that is a statutory public disclosure.

Colleagues at Phoenix Children's Hospital

Clinicians the CMS Doctors & Clinicians file lists under the same group practice. CMS counts 430 clinicians in the practice; 12 are shown here.

Other providers in Phoenix