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DIANA S. WILLADSEN M.D.
NPI 1528099793
Internal Medicine - Hematology & Oncology in Springfield, IL

Active since July 06, 2006
1025 S 6TH ST, SPRINGFIELD, IL 62703(217) 528-7541 Get Directions Write a Review

NPPES record last updated: August 23, 2008. Verified against the NPPES registry weekly; last sync: August 09, 2026.

About Diana S. Willadsen M.d. NPPES

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

DIANA S. WILLADSEN M.D. (NPI 1528099793) is an individual hematology & oncology provider in Springfield, Illinois, licensed in Illinois (036113415) and active in the NPI registry since July 2006.

NPPES Registry Identity

NPI1528099793
Entity TypeIndividualFemale
Primary Taxonomy207RH0003X
Provider Legal NameDIANA S. WILLADSENCredential: M.D.
Location Address1025 S 6TH STSpringfield, IL 62703-2403
Mailing Address1025 S 6th StSpringfield, IL 62703-2403 · (217) 528-7541
Phone(217) 528-7541
Sole ProprietorNo
Enumeration DateJuly 6, 2006
Last NPPES UpdateAugust 23, 2008
✔ NPI 1528099793 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses

★ Primary SpecialtyInternal Medicine · Hematology & OncologyAllopathic & Osteopathic Physicians
Taxonomy Code207RH0003X
License✔ Licensed in IL · 036113415
Definition
An internist doctor of osteopathy that specializes in the treatment of the combination of hematology and oncology disorders. A doctor of osteopathy that is board eligible/certified by the American Osteopathic Board of Internal Medicine WAS able to obtain a Certificate of Special Qualifications in the field of Hematology and Oncology. The Certificate is NO longer offered.
1025 S 6TH ST, Springfield, IL 62703
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Other Identifiers 3

Medicare ID-Type UnspecifiedK17909IL
Medicaid036113415IL
Medicare UPING97327

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.

JEREMY ELLIOTT
Nurse Practitioner (Family)
1025 S 6TH ST
SPRINGFIELD, IL 62703
Sangamon County (217) 528-7541
BARBARA J. WOLFSON L.C.P.C.
Counselor
1025 S 6TH ST
SPRINGFIELD, IL 62703
Sangamon County (217) 528-7541
DR. THOMAS NEIL ROOKE M.D.
Anesthesiology
1025 S 6TH ST
SPRINGFIELD, IL 62703
Sangamon County (217) 528-7541
AMANDA L. HOUSE FNP-BC
Nurse Practitioner (Family)
1025 S 6TH ST
SPRINGFIELD, IL 62703
Sangamon County (217) 528-7541
DELORES A GALLO CRNA
Nurse Anesthetist, Certified Registered
1025 S 6TH ST
SPRINGFIELD, IL 62703
Sangamon County (217) 528-7541
MS. NICOLETA EMILENA SPEIL M.D.
Internal Medicine
1025 S 6TH ST
SPRINGFIELD, IL 62703
Sangamon County (217) 528-7541
BINOD KHATIWADA MD
Internal Medicine
1025 S 6TH ST
SPRINGFIELD, IL 62703
Sangamon County (217) 528-7541
SUSAN STROW STEGEMAN M.D.
Ophthalmology
1025 S 6TH ST
SPRINGFIELD, IL 62703
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 Diana Willadsen's NPI number?

The NPI number for Diana Willadsen is 1528099793. It was assigned to this individual provider in the NPPES registry on July 6, 2006.

Where is Diana Willadsen located?

Diana Willadsen practices at 1025 S 6th St, Springfield, IL 62703. The listed phone number is (217) 528-7541.

What is Diana Willadsen's specialty?

The primary specialty registered for this NPI is Internal Medicine, specializing in Hematology & Oncology, with taxonomy code 207RH0003X.

When was this NPI record last updated?

The NPPES record for Diana Willadsen was last updated on August 23, 2008. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 17 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.