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

Michael J Santiago, MD

Individual provider Hospitalist Physician · NPI 1649254111

Michael J Santiago, MD is a Hospitalist in Phoenix, Arizona. Graduated from University of Illinois College of Med (CHI/PEOR/ROCK/Chm-Urb) in 1985, 41 years ago. Practices with Mayo Clinic Arizona, a 1,616-clinician group and accepts Medicare assignment. Licensed in Arizona and California.

Years since qualifying
41
Trained at
University of Illinois College of Med (CHI/PEOR/ROCK/Chm-Urb)
Licensed in
AZ, CA
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

5777 E Mayo Blvd
Phoenix, AZ 85054-4502
Phone: (480) 301-8000
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Pin is approximate — placed at the ZIP-code centre, not the exact door.

Specialties & licences

Hospitalist Physician (primary) Taxonomy 208M00000X · Licence 28913 (AZ)
Hospitalist Physician Taxonomy 208M00000X · Licence 60318 (CA)

Record details

NPI number1649254111
Entity typeIndividual (Type 1)
GenderMale
Credentials MD
Sole proprietorNo
NPI enumeratedNovember 30, 2005
Last updated in NPPESOctober 8, 2020
Certification dateOctober 8, 2020

Medicare enrollment

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

Medicare specialtyHOSPITALIST
Medical schoolUNIVERSITY OF ILLINOIS COLLEGE OF MED (CHI/PEOR/ROCK/CHM-URB)
Graduated 1985 (41 years in practice)
Group practice Mayo Clinic Arizona — 1616 clinicians
Accepts Medicare assignment Yes — accepts the Medicare-approved amount

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