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

Mark Allen Fernandez, MD

Individual provider Internal Medicine Physician · NPI 1033114939

Mark Allen Fernandez, MD is an Internal Medicine Physician in Peru, Illinois. Licensed in Illinois. Registered with an NPI since 2005.

Licensed in
IL
In the registry since
2005
Specialties on file
3
What do these letters mean?
MD — Doctor of Medicine
A physician who completed allopathic medical school.

See every abbreviation used in this directory →

Practice location Address checks out

920 W St Ste 311
Peru, IL 61354-2770
Phone: (815) 223-9214
Fax: (815) 223-9322
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 036-089936 (IL)
Pediatrics Physician Taxonomy 208000000X · Licence 036089936 (IL)
Geriatric Medicine (Internal Medicine) Physician Taxonomy 207RG0300X · Licence 036089936 (IL)

Record details

NPI number1033114939
Entity typeIndividual (Type 1)
GenderMale
Credentials MD
Sole proprietorNo
NPI enumeratedJune 16, 2005
Last updated in NPPESNovember 20, 2008

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