Mariah Johnson, DNP, PMHNP
NPI 1548977309 · Psychiatric/Mental Health Nurse Practitioner · Sigourney, IA
Enrolled with Medicare as Practitioner - Nurse Practitioner · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Mariah Johnson, DNP, PMHNP is a Psychiatric/Mental Health Nurse Practitioner provider in Sigourney, IA (NPI 1548977309).
Provider details
- NPI number
- 1548977309
- Entity type
- Individual
- Primary specialty
- Psychiatric/Mental Health Nurse PractitionerPhysician Assistants & Advanced Practice Nursing Providers
- Credential
- DNP, PMHNP
- Sex
- Female
- Sole proprietor
- No
- License
- G171774 (IA)
Specialties & taxonomies
Physician Assistants & Advanced Practice Nursing 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
1 documented practice location
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 · 22 distinct drugs on file.
| Drug | Part D claims (2024) | Beneficiaries |
|---|---|---|
| Buspirone Hcl | 58 | 12 |
| Quetiapine Fumarate | 49 | — |
| Sertraline Hcl | 47 | — |
| Prazosin Hcl | 47 | — |
| Aripiprazole | 42 | — |
| Risperidone | 35 | — |
| Hydroxyzine Hcl | 27 | 12 |
| Ziprasidone Hcl |
Practice location
Mailing address
Registry dates
- Enumerated
- 2022-11-01
- Last updated
- 2022-11-01
- Certified
- 2022-11-01
Frequently asked questions
- What is Mariah Johnson's NPI number?
- Mariah Johnson's National Provider Identifier (NPI) is 1548977309, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Mariah Johnson's specialty?
- Mariah Johnson is listed in the NPPES registry with a primary specialty of Psychiatric/Mental Health Nurse Practitioner (Physician Assistants & Advanced Practice Nursing Providers).
- Where is Mariah Johnson located?
- Mariah Johnson's practice location on file with NPPES is 23019 Highway 149, Sigourney, IA 52591-8341.
- What is Mariah Johnson's phone number?
- The practice phone number listed in the NPPES registry for Mariah Johnson is (641) 622-2720.
- Does Mariah Johnson accept Medicare?
- Mariah Johnson is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Mariah Johnson's NPI active?
- Yes — Mariah Johnson's NPI (1548977309) is active in the NPPES registry as of the last update on 2022-11-01.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.