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

Dr. Guido David Pelaez, MD

Individual provider Internal Medicine Physician · NPI 1427792316

Dr. Guido David Pelaez, MD is an Internal Medicine Physician in Saint Louis, Missouri. Licensed in Missouri. Registered with an NPI since 2022.

Licensed in
MO
In the registry since
2022
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

1 Barnes Jewish Hospital Plz
Saint Louis, MO 63110-1003
Phone: (314) 362-8065
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Pin is approximate — placed at the ZIP-code centre, not the exact door.

Specialties & licences

Hematology & Oncology Physician (primary) Taxonomy 207RH0003X · Licence 2026027406 (MO)
Internal Medicine Physician Taxonomy 207R00000X · Licence 2022020315 (MO)
Student in an Organized Health Care Education/Training Program Taxonomy 390200000X

Record details

NPI number1427792316
Entity typeIndividual (Type 1)
GenderMale
Credentials MD
Sole proprietorNo
NPI enumeratedApril 26, 2022
Last updated in NPPESJuly 13, 2026
Certification dateJuly 13, 2026

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