Rachael Demattei, APRN
Nurse Practitioner · O Fallon, IL
Rachael Demattei, APRN is a nurse practitioner with a practice address in O Fallon, Illinois, and NPI 1891443289, issued on Mar 15, 2022. Check the license (Illinois 209027937, as entered in NPPES) with the Illinois board that licenses this profession; the Medicare figures below come from public CMS files.
- Name
- Rachael Demattei
- Credential
- APRN
- Primary taxonomy
- Nurse Practitioner 363L00000X
- License numbers
- 209027937 IL
041495134 IL
2017003138 MO
Self-reported in NPPES; status is on the state search - Practice location
- 321 Regency Park Ste 100, O Fallon, IL 62269
- Phone
- (618) 416-7970
- Enumerated
- Mar 15, 2022
- Record last updated
- Oct 17, 2023
- Fax
- (618) 416-7971
- Medicare enrollment
- Enrolled (PECOS I20231214002749); accepts Medicare assignment
- Medical or professional school
- Southern Illinois University School Of Medicine, 2022
- Entity
- Type 1 · individual
8 nearest nurse practitioner records → All 4,892 in Illinois → Look up another NPI →
Also registered at 321 Regency Park Ste 100
A shared address usually means a shared clinic or building; it does not show who employs whom.
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Verify Rachael Demattei in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersWhich Illinois board licenses this profession
Search for license 209027937Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
79% fewer Medicare Part D claims than the average nurse practitioner in 2024
234 Medicare Part D claims for 110 beneficiaries, against an average of 1,109 among the 54,319 providers of this specialty who prescribed in Part D. Brand-name drugs were 12% of claims. 33 claims were for opioids.
Most prescribed
- Anastrozole27 claims
- Hydrocodone-Acetaminophen22 claims
- Hydroxyurea17 claims
- Eliquis13 claims
Source: CMS Medicare Part D Prescribers by Provider and Drug, 2024 (data.cms.gov). Part D covers prescriptions for Medicare patients only; drugs with fewer than 11 claims are not published.
Industry payments in 2024: $2,787.46
127 payments; by number, the most common kind was food and beverage; the largest payer was Janssen Biotech, Inc. The 38,884 providers of this specialty with any payment received $791.64 on average. Payments are reported by manufacturers, not by the provider, and are not a sign of wrongdoing.
Source: CMS Open Payments, program year 2024 (openpaymentsdata.cms.gov); average among providers of this specialty with at least one payment.
Bills Medicare through one group practice
- Cancer Care Specialists OF Central Illinois SCO Fallon, IL
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
Rachael Demattei among 4,892 nurse practitioner records in Illinois
Rachael Demattei, APRN is one of 4,892 nurse practitioner records with a practice address in Illinois. 81% of them appear in a Medicare file (Part D prescribing, MIPS, Open Payments or Medicare group billing); this one does. Its NPI, issued in 2022, is newer than 73% of them.
- NPI issued2022 · 73% of these records are older, 20% newer
- In a Medicare fileYes · 81% of these records are
- In the CMS Doctors and Clinicians fileYes · 69% of these records are
- Graduated2022 · median 2018 among the 3,389 with a school on file
- Record last updated2023 · 36% of these records were not updated in five years or more
Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 363L00000X and a Illinois practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
19 nurse practitioner records list a practice address in O Fallon
They are 19 of the 1,077 NPPES records with a practice address in O Fallon, and 4,892 nurse practitioner records in Illinois.
All 4,892 in Illinois → Every provider in O Fallon → Nurse Practitioner nationwide →
The 8 nurse practitioner records with the nearest ZIP codes
- Bethany Bowen, FNPShiloh, IL 622691609293372
- Kimberly Burgess, AGNP-CO Fallon, IL 622691164956066
- Kelly Evans, FNPShiloh, IL 622691508341181
- Marianne GuthrieO Fallon, IL 622691609313758
- Charissa Holesko, ANPO Fallon, IL 622691619343274
- Jodi Jany, AGNPO Fallon, IL 622691811357833
- Katy LorenzoO Fallon, IL 622691205348133
- Sherry Pilkington, NPO Fallon, IL 622691962481770
Common questions
What is Rachael Demattei, APRN's NPI number?
Rachael Demattei, APRN's National Provider Identifier (NPI) is 1891443289, issued on Mar 15, 2022. An NPI identifies a provider in billing; it is not a license.
Where is Rachael Demattei, APRN located?
The NPPES record lists a practice address at 321 Regency Park Ste 100, O Fallon, IL, 62269. Phone: (618) 416-7970. Providers update this record themselves, so call before visiting.
How can I verify Rachael Demattei, APRN's license?
NPPES lists Illinois license number 209027937, as entered by the provider. Search the Illinois board that licenses this profession; the NPPES record confirms identity only.
How much does Rachael Demattei, APRN prescribe under Medicare Part D?
In 2024, Rachael Demattei, APRN had 234 Medicare Part D claims for 110 beneficiaries; the average among nurse practitioner prescribers was 1,109. Part D covers Medicare prescriptions only.
Source: CMS National Plan and Provider Enumeration System (NPPES), file of Aug 9, 2026 (NPPES files on CMS.gov); NUCC Health Care Provider Taxonomy. Medicare files from data.cms.gov. An NPI identifies who bills; it is not a license.
Figures on PlainDoctor are read from the federal files each page names (CMS NPPES, Medicare Part D, MIPS, Open Payments; the HHS-OIG exclusion list only as counts) and from Census population estimates, with the file date shown beside them. See our editorial standards & corrections policy, the methodology behind these numbers, or report a data error. Data current as of Aug 9, 2026.