Mariah Johnson, DNP, PMHNP
Psychiatric/Mental Health Nurse Practitioner · Sigourney, IA
Mariah Johnson, DNP, PMHNP is a psychiatric/mental health nurse practitioner with a practice address in Sigourney, Iowa, and NPI 1548977309, issued on Nov 1, 2022. Check the license (Iowa G171774, as entered in NPPES) with the Iowa board that licenses this profession; the Medicare figures below come from public CMS files.
- Name
- Mariah Johnson
- Credential
- DNP, PMHNP
- Primary taxonomy
- Psychiatric/Mental Health Nurse Practitioner 363LP0808X
- License number
- G171774 IA
Self-reported in NPPES; status is on the state search - Practice location
- 23019 Highway 149, Sigourney, IA 52591
- Phone
- (641) 622-2720
- Enumerated
- Nov 1, 2022
- Entity
- Type 1 · individual
Also registered at 23019 Highway 149
A shared address usually means a shared clinic or building; it does not show who employs whom.
- Roberto Castro, MD.Emergency Medicine Physician1083600050
- Brittney Eilers, OTD, OTR/LOccupational Therapist1467344101
- Denyse Gipple, RNAdministrator Registered Nurse1437095874
- Jessica Webb, DOFamily Medicine Physician1114368115
Verify Mariah Johnson in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersWhich Iowa board licenses this profession
Search for license G171774Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS, AOA, NCCPA, AANPNot checked
27% fewer Medicare Part D claims than the average psychiatric/mental health nurse practitioner in 2024
653 Medicare Part D claims for 72 beneficiaries, against an average of 895 among the 22,437 providers of this specialty who prescribed in Part D. Brand-name drugs were 8% of claims.
Most prescribed
- Buspirone Hcl58 claims
- Quetiapine Fumarate49 claims
- Prazosin Hcl47 claims
- Sertraline Hcl47 claims
- Aripiprazole42 claims
- Risperidone35 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.
One hospital or facility affiliation
- Keokuk County Health CenterSigourney, IA · Critical Access Hospitals
Source: CMS Doctors and Clinicians affiliations; Hospital General Information (Care Compare) (data.cms.gov). Star ratings are CMS hospital ratings, not ratings of this provider.
1 psychiatric/mental health nurse practitioner records list a Sigourney practice address
They are 1 of the 32 NPPES records with a Sigourney practice address, and 510 psychiatric/mental health nurse practitioner records in Iowa.
Other psychiatric/mental health nurse practitioner records in Iowa
- Noel Adams, ARNPMarion, IA1295352110
- Monsurat AdelekeSioux City, IA1669308433
- Rosemary Ajibade, PMHNPIowa City, IA1023440161
- Merve Akova, PMHNPWaterloo, IA1962999672
- Leeann Albright, MSN, FNP-C, ARNPWest Des Moines, IA1346667862
- Nan Ambrosy, DNP, ARNPDes Moines, IA1144325648
- Kristen Andersen, PMHNP-BCMason City, IA1730920372
- Ashley Anderson, PMHNP-BCSioux City, IA1881499242
- Autumn Anderson, MSN, RN, PMHNP-BCDavenport, IA1306475413
- Joan AndersonClinton, IA1902478811
Common questions
What is Mariah Johnson, DNP, PMHNP's NPI number?
Mariah Johnson, DNP, PMHNP's National Provider Identifier (NPI) is 1548977309, issued on Nov 1, 2022. An NPI identifies a provider in billing; it is not a license.
Where is Mariah Johnson, DNP, PMHNP located?
The NPPES record lists a practice address at 23019 Highway 149, Sigourney, IA, 52591. Phone: (641) 622-2720. Providers update this record themselves, so call before visiting.
How can I verify Mariah Johnson, DNP, PMHNP's license?
NPPES lists Iowa license number G171774, as entered by the provider. Search the Iowa board that licenses this profession; the NPPES record confirms identity only.
How much does Mariah Johnson, DNP, PMHNP prescribe under Medicare Part D?
In 2024, Mariah Johnson, DNP, PMHNP had 653 Medicare Part D claims for 72 beneficiaries; the average among psychiatric/mental health nurse practitioner prescribers was 895. Part D covers Medicare prescriptions only.
Source: CMS National Plan and Provider Enumeration System (NPPES), loaded Aug 27, 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.
Every figure on PlainDoctor is rendered directly from the federal CMS NPPES registry, Medicare Part D, MIPS, and Open Payments records, no number is typed in by an editor. See our editorial standards & corrections policy, the methodology behind these numbers, or report a data error. Data current as of Aug 27, 2026.