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KAREN L. HOELZER M.D.
NPI 1477659126
Internal Medicine - Medical Oncology in Springfield, IL

Active since September 16, 2006
900 N. 1ST STREET, SPRINGFIELD, IL 62702(217) 528-7541(217) 527-2830 Get Directions Write a Review

NPPES record last updated: July 31, 2014. Verified against the NPPES registry weekly; last sync: August 02, 2026.

About Karen L. Hoelzer M.d. NPPES

Official registry information on file with the National Plan and Provider Enumeration System.

KAREN L. HOELZER M.D. (NPI 1477659126) is an individual medical oncology provider in Springfield, Illinois, licensed in Illinois (036-070406) and active in the NPI registry since September 2006.

NPPES Registry Identity

NPI1477659126
Entity TypeIndividualFemale
Primary Taxonomy207RX0202X
Provider Legal NameKAREN L. HOELZERCredential: M.D.
Location Address900 N. 1ST STREETSpringfield, IL 62702-3749
Mailing Address1025 S 6th StSpringfield, IL 62703-2403 · (217) 528-7541
Phone(217) 528-7541
Fax(217) 527-2830
Sole ProprietorNo
Enumeration DateSeptember 16, 2006
Last NPPES UpdateJuly 31, 2014
✔ NPI 1477659126 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses

★ Primary SpecialtyInternal Medicine · Medical OncologyAllopathic & Osteopathic Physicians
Taxonomy Code207RX0202X
License✔ Licensed in IL · 036-070406
Definition
An internist who specializes in the diagnosis and treatment of all types of cancer and other benign and malignant tumors. This specialist decides on and administers therapy for these malignancies as well as consults with surgeons and radiotherapists on other treatments for cancer.
900 N. 1ST STREET, Springfield, IL 62702
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Other Names 1

Former Name (1)Karen L. Brekke

Other Identifiers 3

Medicare UPINC46230
Medicare ID-Type UnspecifiedK24284
Medicaid036070406IL

Other Providers at the Same Location NPPES 20

Providers registered at the same practice address, or within the immediate area, according to the NPPES registry.

DR. LUCINDA A HANY
Obstetrics & Gynecology
900 N. 1ST STREET
SPRINGFIELD, IL 62702
Sangamon County (217) 528-7541
MARY E. BRETSCHER M.D.
Internal Medicine (Hematology & Oncology)
900 N. 1ST STREET
SPRINGFIELD, IL 62702
Sangamon County (217) 528-7541
DR. PAMELA J. RUNDLE M.D.
Obstetrics & Gynecology
900 N. 1ST STREET
SPRINGFIELD, IL 62702
Sangamon County (217) 528-7541
DR. TARA Z. BENNETT M.D.
Obstetrics & Gynecology
900 N. 1ST STREET
SPRINGFIELD, IL 62702
Sangamon County (217) 528-7541
LEONARD GIANNONE MD
Internal Medicine (Hematology & Oncology)
900 N. 1ST STREET
SPRINGFIELD, IL 62702
Sangamon County (217) 528-7541
STACY ANN ROHER WHNP-BC
Nurse Practitioner (Women's Health)
900 N. 1ST STREET
SPRINGFIELD, IL 62702
Sangamon County (217) 528-7541
J. MICHAEL ZINZILIETA M.D.
Obstetrics & Gynecology
900 N. 1ST STREET
SPRINGFIELD, IL 62702
Sangamon County (217) 528-7541
TAMMIE A. KLEIN M.D.
Obstetrics & Gynecology
900 N. 1ST STREET
SPRINGFIELD, IL 62702
Sangamon County (217) 528-7541

Frequently Asked Questions NPPES & CMS

Common questions about this NPI record, answered from the official NPPES registry and CMS datasets shown on this page.

What is Karen Hoelzer's NPI number?

The NPI number for Karen Hoelzer is 1477659126. It was assigned to this individual provider in the NPPES registry on September 16, 2006. The provider is also known as Karen L. Brekke.

Where is Karen Hoelzer located?

Karen Hoelzer practices at 900 N. 1st Street, Springfield, IL 62702. The listed phone number is (217) 528-7541.

What is Karen Hoelzer's specialty?

The primary specialty registered for this NPI is Internal Medicine, specializing in Medical Oncology, with taxonomy code 207RX0202X.

When was this NPI record last updated?

The NPPES record for Karen Hoelzer was last updated on July 31, 2014. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 12 years ago. If this record has changed at CMS more recently, you can request an on-demand re-check against the live CMS registry, directly from this page.