Peter Muigai Mwariri, APRN
Psychiatric/Mental Health Nurse Practitioner · Saint Charles, MO
Peter Muigai Mwariri, APRN is a psychiatric/mental health nurse practitioner with a practice address in Saint Charles, Missouri, and NPI 1841994043, issued on Mar 30, 2023. Check the license (Missouri 2023007559, as entered in NPPES) with the Missouri board that licenses this profession; the Medicare figures below come from public CMS files.
- Name
- Peter Muigai Mwariri
- Credential
- APRN
- Primary taxonomy
- Psychiatric/Mental Health Nurse Practitioner 363LP0808X
- License numbers
- 2023007559 MO
2014022773 MO
Self-reported in NPPES; status is on the state search - Practice location
- 102 Compass Point Dr, Saint Charles, MO 63301
- Phone
- (844) 853-8937
- Enumerated
- Mar 30, 2023
- Record last updated
- Dec 4, 2023
- Entity
- Type 1 · individual
8 nearest psychiatric/mental health nurse practitioner records → All 765 in Missouri → Look up another NPI →
Also registered at 102 Compass Point Dr
A shared address usually means a shared clinic or building; it does not show who employs whom.
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Verify Peter Muigai Mwariri in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersWhich Missouri board licenses this profession
Search for license 2023007559Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
52% fewer Medicare Part D claims than the average psychiatric/mental health nurse practitioner in 2024
437 Medicare Part D claims for 55 beneficiaries, against an average of 906 among the 30,717 providers of this specialty who prescribed in Part D. Brand-name drugs were 10% of claims.
Most prescribed
- Trazodone Hcl32 claims
- Mirtazapine26 claims
- Quetiapine Fumarate22 claims
- Aripiprazole21 claims
- Hydroxyzine Hcl19 claims
- Citalopram Hbr18 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.
Peter Muigai Mwariri among 765 psychiatric/mental health nurse practitioner records in Missouri
Peter Muigai Mwariri, APRN is one of 765 psychiatric/mental health nurse practitioner records with a practice address in Missouri. 77% of them appear in a Medicare file (Part D prescribing, MIPS, Open Payments or Medicare group billing); this one does. Its NPI, issued in 2023, is newer than 63% of them.
- NPI issued2023 · 63% of these records are older, 27% newer
- In a Medicare fileYes · 77% of these records are
- In the CMS Doctors and Clinicians fileNo · 65% of these records are
- Record last updated2023 · 20% of these records were not updated in five years or more
Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 363LP0808X and a Missouri practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
Psychiatric/Mental Health Nurse Practitioner providers in Missouri
There are 765 psychiatric/mental health nurse practitioner records in Missouri.
All 765 in Missouri → Every provider in Saint Charles → Psychiatric/Mental Health Nurse Practitioner nationwide →
The 8 psychiatric/mental health nurse practitioner records with the nearest ZIP codes
- Melissa Fischer, PMHNP-BCSaint Charles, MO 633011639509607
- Elizabeth Lynch, APRN, DOC OF NURSINGSaint Charles, MO 633011871174441
- Heather Peterson, APRNSaint Charles, MO 633011629733860
- Jenna Plude, CNPSaint Charles, MO 633011285588251
- Virginia Wingler, APRNSaint Charles, MO 633011669033825
- Eyerusalem Beyene, PMHNP-BCSaint Charles, MO 633031487584231
- Chika IjiomaSaint Charles, MO 633031770350811
- Lucy KarimiSaint Charles, MO 633031255268538
Common questions
What is Peter Muigai Mwariri, APRN's NPI number?
Peter Muigai Mwariri, APRN's National Provider Identifier (NPI) is 1841994043, issued on Mar 30, 2023. An NPI identifies a provider in billing; it is not a license.
Where is Peter Muigai Mwariri, APRN located?
The NPPES record lists a practice address at 102 Compass Point Dr, Saint Charles, MO, 63301. Phone: (844) 853-8937. Providers update this record themselves, so call before visiting.
How can I verify Peter Muigai Mwariri, APRN's license?
NPPES lists Missouri license number 2023007559, as entered by the provider. Search the Missouri board that licenses this profession; the NPPES record confirms identity only.
How much does Peter Muigai Mwariri, APRN prescribe under Medicare Part D?
In 2024, Peter Muigai Mwariri, APRN had 437 Medicare Part D claims for 55 beneficiaries; the average among psychiatric/mental health nurse practitioner prescribers was 906. 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.