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

John Mark Holtan, MD

Individual provider Family Medicine Physician · NPI 1831127224

John Mark Holtan, MD is a Family Medicine Physician in Rockford, 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 Address checks out

5713 Strathmoor Dr Ste 1
Rockford, IL 61107-7093
Phone: (815) 398-4545
Fax: (815) 399-7705
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Pin is approximate — placed at the ZIP-code centre, not the exact door.

Specialties & licences

Family Medicine Physician (primary) Taxonomy 207Q00000X (IL)

Record details

NPI number1831127224
Entity typeIndividual (Type 1)
GenderMale
Credentials MD
Sole proprietorNo
NPI enumeratedJune 28, 2006
Last updated in NPPESJuly 8, 2007
Mailing address5713 Strathmoor Dr, Suite 1, Rockford, IL 61107-7093

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