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

Gillian Hamilton, MD, PHD

Individual provider Internal Medicine Physician · NPI 1275572711

Gillian Hamilton, MD, PHD practises Geriatric Medicine in Phoenix, Arizona. Graduated from University of Arizona College of Medicine in 1981, 45 years ago. Practices with Arizona Supportive Care, LLC, a 5-clinician group and accepts Medicare assignment. Licensed in Arizona.

Years since qualifying
45
Trained at
University of Arizona 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.
PHD — Doctor of Philosophy
A research doctorate. In healthcare it usually sits alongside a clinical licence.

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Practice location Address checks out

1510 E Flower St
Phoenix, AZ 85014-5698
Phone: (602) 530-6900
Fax: (602) 636-6357
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Pin is approximate — placed at the ZIP-code centre, not the exact door.

Specialties & licences

Internal Medicine Physician (primary) Taxonomy 207R00000X · Licence 13608 (AZ)

Record details

NPI number1275572711
Entity typeIndividual (Type 1)
GenderFemale
Credentials MD , PHD
Sole proprietorNo
NPI enumeratedJune 6, 2006
Last updated in NPPESNovember 5, 2021
Certification dateNovember 1, 2021

Medicare enrollment

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

Medicare specialtyGERIATRIC MEDICINE
Also practisesINTERNAL MEDICINE
Medical schoolUNIVERSITY OF ARIZONA COLLEGE OF MEDICINE
Graduated 1981 (45 years in practice)
Group practice Arizona Supportive Care, Llc — 5 clinicians
Accepts Medicare assignment Yes — accepts the Medicare-approved amount

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 patients83
Services billed 223 a service is one billed item, such as a visit, a test or a procedure
Average patient age82

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.

Colleagues at Arizona Supportive Care, LLC

Clinicians the CMS Doctors & Clinicians file lists under the same group practice.

Other providers in Phoenix