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

Dr. Antonio Santiago-Agostini, MD

Individual provider Internal Medicine Physician · NPI 1801834445

Dr. Antonio Santiago-Agostini, MD is an Internal Medicine in Owosso, Michigan. Graduated from Ponce School of Medicine in 1985, 41 years ago. Practices with Memorial Hospital, a 206-clinician group and accepts Medicare assignment. Licensed in Michigan.

Years since qualifying
41
Trained at
Ponce School of Medicine
Licensed in
MI
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

300 Health Park Dr Ste 302
Owosso, MI 48867-1293
Phone: (989) 723-5540
Fax: (989) 720-2292
Show map & directions

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

Specialties & licences

Internal Medicine Physician (primary) Taxonomy 207R00000X · Licence 4301054955 (MI)

Record details

NPI number1801834445
Entity typeIndividual (Type 1)
GenderMale
Credentials MD
Sole proprietorNo
NPI enumeratedJune 4, 2006
Last updated in NPPESJune 17, 2020
Certification dateJune 17, 2020

Medicare enrollment

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

Medicare specialtyINTERNAL MEDICINE
Medical schoolPONCE SCHOOL OF MEDICINE
Graduated 1985 (41 years in practice)
Group practice Memorial Hospital — 206 clinicians
Accepts Medicare assignment Yes — accepts the Medicare-approved amount

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