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

Dr. Ireneo Yap Diaz Jr., MD

Individual provider Infectious Disease Physician · NPI 1043321409

Dr. Ireneo Yap Diaz Jr., MD is an Infectious Disease Physician in Battle Creek, Michigan. Licensed in Michigan. Registered with an NPI since 2006.

Licensed in
MI
In the registry since
2006
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

5500 Armstrong Rd
Battle Creek, MI 49015-1014
Phone: (269) 966-5600
Fax: (269) 660-6041
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 4301065745 (MI)
Infectious Disease Physician Taxonomy 207RI0200X · Licence 4301065745 (MI)

Record details

NPI number1043321409
Entity typeIndividual (Type 1)
GenderMale
Credentials MD
Sole proprietorNo
NPI enumeratedAugust 31, 2006
Last updated in NPPESSeptember 3, 2020
Certification dateSeptember 3, 2020

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