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

Dr. Sujata A Oak, MD

Individual provider Internal Medicine Physician · NPI 1275503849

Dr. Sujata A Oak, MD is an Internal Medicine Physician in Dekalb, Illinois. Licensed in Illinois. Registered with an NPI since 2006.

Licensed in
IL
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 Partly verified

Some contact details are missing from the federal record.

Health Services Northern Illinois University
Dekalb, IL 60115
Phone: (815) 753-1311
Fax: (815) 753-9599
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Pin is approximate — placed at the ZIP-code centre, not the exact door.

Specialties & licences

Internal Medicine Physician (primary) Taxonomy 207R00000X (IL)

Record details

NPI number1275503849
Entity typeIndividual (Type 1)
GenderFemale
Credentials MD
Sole proprietorNo
NPI enumeratedJanuary 25, 2006
Last updated in NPPESJuly 13, 2026
Mailing address813 Steeplechase Rd, St Charles, IL 60174

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