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

Ann-Marie Tomas Tantoco, MD

Individual provider Internal Medicine Physician · NPI 1366686586

Ann-Marie Tomas Tantoco, MD is a Hospitalist in Chicago, Illinois. Graduated from West Virginia University School of Medicine in 2009, 17 years ago. Practices with Northwestern Medical Faculty Foundation, a 4,394-clinician group, works from 2 locations and accepts Medicare assignment. Licensed in Illinois.

Years since qualifying
17
Trained at
West Virginia University School of Medicine
Licensed in
IL
In the registry since
2009
Specialties on file
3
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

251 E Huron St
Chicago, IL 60611
Phone: (312) 926-5924
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Pin is approximate — placed at the ZIP-code centre, not the exact door.

Additional practice locations (1)

  • 225 E Chicago Ave, Chicago, IL 60611-2991 — (312) 227-7413

Specialties & licences

Hospitalist Physician (primary) Taxonomy 208M00000X · Licence 036.146534 (IL)
Internal Medicine Physician Taxonomy 207R00000X · Licence 036.146534 (IL)
Pediatrics Physician Taxonomy 208000000X · Licence 036.146534 (IL)

Record details

NPI number1366686586
Entity typeIndividual (Type 1)
GenderFemale
Credentials MD
Sole proprietorNo
NPI enumeratedMay 1, 2009
Last updated in NPPESNovember 3, 2021
Certification dateNovember 3, 2021

Medicare enrollment

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

Medicare specialtyHOSPITALIST
Also practisesINTERNAL MEDICINE
Medical schoolWEST VIRGINIA UNIVERSITY SCHOOL OF MEDICINE
Graduated 2009 (17 years in practice)
Group practice Northwestern Medical Faculty Foundation — 4394 clinicians
Accepts Medicare assignment Yes — accepts the Medicare-approved amount

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