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

Michael Castro, MD

Individual provider Internal Medicine Physician · NPI 1639170293

Michael Castro, MD practises Internal Medicine in Glendale, Arizona. Graduated from University of Puerto Rico School of Medicine in 1994, 32 years ago. Practices with Banner Hospital Based Physicians Arizona LLC, a 641-clinician group, works from 2 locations and accepts Medicare assignment. Licensed in Arizona.

Years since qualifying
32
Trained at
University of Puerto Rico School of Medicine
Licensed in
AZ
In the registry since
2005
Specialties on file
2
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

18275 N 59th Ave Ste 138
Glendale, AZ 85308-1260
Phone: (602) 564-0078
Fax: (602) 564-1154
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Pin is approximate — placed at the ZIP-code centre, not the exact door.

Additional practice locations (1)

  • 1325 N Litchfield Rd Ste 110, Goodyear, AZ 85395-1214 — (623) 935-9494

Specialties & licences

Internal Medicine Physician (primary) Taxonomy 207R00000X · Licence 23581 (AZ)
Hospitalist Physician Taxonomy 208M00000X · Licence 23581 (AZ)

Record details

NPI number1639170293
Entity typeIndividual (Type 1)
GenderMale
Credentials MD
Sole proprietorNo
NPI enumeratedAugust 4, 2005
Last updated in NPPESOctober 4, 2023
Certification dateOctober 4, 2023

Medicare enrollment

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

Medicare specialtyINTERNAL MEDICINE
Medical schoolUNIVERSITY OF PUERTO RICO SCHOOL OF MEDICINE
Graduated 1994 (32 years in practice)
Group practice Banner Hospital Based Physicians Arizona Llc — 641 clinicians
Accepts Medicare assignment Yes — accepts the Medicare-approved amount
Practice locations4 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 patients440
Services billed 1,492 a service is one billed item, such as a visit, a test or a procedure
Average patient age75

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.

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.

Food and Beverage $643 7 payments · 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.

Practises at

Facilities the CMS Facility Affiliation file lists for this clinician.

Colleagues at Banner Hospital Based Physicians Arizona LLC

Clinicians the CMS Doctors & Clinicians file lists under the same group practice. CMS counts 641 clinicians in the practice; 12 are shown here.

Other providers in Glendale