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

William Zimmer MD PC

Organization Hematology & Oncology Physician · NPI 1194919522

William Zimmer MD PC is a Hematology & Oncology Physician in Springfield, Illinois. Licensed in Illinois. Registered with an NPI since 2007.

Licensed in
IL
In the registry since
2007
What do these letters mean?
PC — Professional corporation
A form of business registration, not a clinical qualification.

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Practice location Address checks out

301 N 8th St Ste 1 B201
Springfield, IL 62701-1041
Phone: (217) 535-3799
Fax: (217) 525-5685
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Pin is approximate — placed at the ZIP-code centre, not the exact door.

Specialties & licences

Hematology & Oncology Physician (primary) Taxonomy 207RH0003X (IL)

Record details

NPI number1194919522
Entity typeOrganization (Type 2)
Organization subpartNo
Authorized official William Zimmer — Owner · (217) 544-6464
NPI enumeratedAugust 29, 2007
Last updated in NPPESOctober 2, 2007
Mailing address801 E Carpenter St, Po Box 1977, Springfield, IL 62702-5323

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