Peter Mwariri, APRN
NPI 1841994043 · Psychiatric/Mental Health Nurse Practitioner · Saint Charles, MO
Enrolled with Medicare as Practitioner - Nurse Practitioner · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Provider details
- NPI number
- 1841994043
- Entity type
- Individual
- Primary specialty
- Psychiatric/Mental Health Nurse PractitionerPhysician Assistants & Advanced Practice Nursing Providers
- Credential
- APRN
- Sex
- Male
- Sole proprietor
- No
- License
- 2014022773 (MO)
Specialties & taxonomies
Physician Assistants & Advanced Practice Nursing Providers
Nursing Service Providers
Profile Score
A profile completeness & documented-activity index — NOT a quality, outcomes, or patient-satisfaction rating.
- Registry tenure38% of score
3 yrs in NPPES registry
- Profile completeness38% of score
100% of core fields populated
- Practice footprint23% of score
4 documented practice locations
Signals a provider has no public data for (e.g. Medicare claims) are left out of the score entirely — never counted as zero — so providers without that data are not penalized. See the full formula and weights in our methodology.
What this provider prescribes (Medicare Part D)
Top drugs by Medicare Part D claim volume, 2024 · 18 distinct drugs on file.
| Drug | Part D claims (2024) | Beneficiaries |
|---|---|---|
| Trazodone Hcl | 32 | 15 |
| Mirtazapine | 26 | — |
| Quetiapine Fumarate | 22 | — |
| Aripiprazole | 21 | — |
| Hydroxyzine Hcl | 19 | — |
| Duloxetine Hcl | 18 | — |
| Citalopram Hydrobromidebrand: Citalopram Hbr |
Practice location
Mailing address
Additional practice locations (3)
- 1000 W 10th StRolla, MO 65401-2905Phone: (573) 364-9000Fax: (573) 202-2484
- 1000 W 10th StRolla, MO 65401-2905Phone: (573) 458-8899Fax: (573) 341-5611
- 3785 New Town BlvdSaint Charles, MO 63301-4358Phone: (844) 853-8937
Registry dates
- Enumerated
- 2023-03-30
- Last updated
- 2023-12-04
- Certified
- 2023-12-04
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.