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

Rachael Demattei, APRN

Individual provider Registered Nurse · NPI 1891443289

Rachael Demattei, APRN is a Hematology/Oncology in O Fallon, Illinois. Graduated from Southern Illinois University School of Medicine in 2022, 4 years ago. Practices with Cancer Care Specialists of Central Illinois SC, a 28-clinician group, works from 5 locations and accepts Medicare assignment. Licensed in Illinois and Missouri.

Years since qualifying
4
Trained at
Southern Illinois University School of Medicine
Licensed in
IL, MO
In the registry since
2022
Specialties on file
3
What do these letters mean?
APRN — Advanced Practice Registered Nurse
The umbrella licence covering nurse practitioners, midwives, anaesthetists and clinical nurse specialists.

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Practice location Address checks out

321 Regency Park Ste 100
O Fallon, IL 62269-1887
Phone: (618) 416-7970
Fax: (618) 416-7971
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Pin is approximate — placed at the ZIP-code centre, not the exact door.

Additional practice locations (4)

  • 9515 Holy Cross Ln Ste 6, Breese, IL 62230-3618 — (618) 416-7970
  • 2100 Madison Ave, Granite City, IL 62040-4713 — (252) 744-6478
  • 12860 Troxler Ave Ste 135, Highland, IL 62249-2898 — (618) 416-7970
  • Broadway Plaza Ste 1, Sparta, IL 62286-1800 — (618) 416-7970

Specialties & licences

Nurse Practitioner (primary) Taxonomy 363L00000X · Licence 209027937 (IL)
Registered Nurse Taxonomy 163W00000X · Licence 041495134 (IL)
Registered Nurse Taxonomy 163W00000X · Licence 2017003138 (MO)

Record details

NPI number1891443289
Entity typeIndividual (Type 1)
GenderFemale
Credentials APRN
Sole proprietorNo
NPI enumeratedMarch 15, 2022
Last updated in NPPESOctober 17, 2023
Certification dateOctober 16, 2023

Medicare enrollment

From the CMS Doctors & Clinicians file — this clinician is enrolled in Medicare.

Medicare specialtyHEMATOLOGY/ONCOLOGY
Medical schoolSOUTHERN ILLINOIS UNIVERSITY SCHOOL OF MEDICINE
Graduated 2022 (4 years in practice)
Group practice Cancer Care Specialists Of Central Illinois Sc — 28 clinicians
Accepts Medicare assignment Yes — accepts the Medicare-approved amount

Other providers in O Fallon