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

Mr. Steven P Zenker, MD

Individual provider Pediatrics Physician · NPI 1861485708

Mr. Steven P Zenker, MD is a Pediatrics Physician in Alton, Illinois. Licensed in Illinois. Registered with an NPI since 2005.

Licensed in
IL
In the registry since
2005
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 Professional Dr Ste 250
Alton, IL 62002-5068
Phone: (618) 463-8636
Fax: (618) 463-8640
Show map & directions

Pin is approximate — placed at the ZIP-code centre, not the exact door.

Specialties & licences

Pediatrics Physician (primary) Taxonomy 208000000X · Licence 036-075124 (IL)

Record details

NPI number1861485708
Entity typeIndividual (Type 1)
GenderMale
Credentials MD
Sole proprietorNo
NPI enumeratedAugust 25, 2005
Last updated in NPPESOctober 21, 2025
Certification dateOctober 21, 2025
Mailing addressPo Box 959203, Saint Louis, MO 63195-9203

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