Cynthia Johnson, ARNP
NPI 1023555638 · Psychiatric/Mental Health Nurse Practitioner · Sioux City, IA
Enrolled with Medicare as Practitioner - Nurse Practitioner · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Cynthia Johnson, ARNP is a Psychiatric/Mental Health Nurse Practitioner provider in Sioux City, IA (NPI 1023555638).
Provider details
- NPI number
- 1023555638
- Entity type
- Individual
- Primary specialty
- Psychiatric/Mental Health Nurse PractitionerPhysician Assistants & Advanced Practice Nursing Providers
- Credential
- ARNP
- Sex
- Female
- Sole proprietor
- No
- License
- 113003 (NE)
Specialties & taxonomies
Physician Assistants & Advanced Practice Nursing Providers
Physician Assistants & Advanced Practice Nursing Providers
Profile Score
A profile completeness & documented-activity index — NOT a quality, outcomes, or patient-satisfaction rating.
- Registry tenure33% of score
9 yrs in NPPES registry
- Profile completeness33% of score
100% of core fields populated
- Practice footprint20% of score
3 documented practice locations
- Open Payments transparency13% of score
Has Open Payments disclosures (2024)
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 · 42 distinct drugs on file.
| Drug | Part D claims (2024) | Beneficiaries |
|---|---|---|
| Quetiapine Fumarate | 156 | 11 |
| Lamotrigine | 82 | 12 |
| Cariprazine Hclbrand: Vraylar | 70 | — |
| Zolpidem Tartrate | 64 | — |
| Clonazepam | 64 | 12 |
| Aripiprazole | 62 | 13 |
| Suvorexantbrand: Belsomra | 62 |
Transparency — industry payments
Based on CMS Open Payments, 2024; not all care is captured.
$125 across 8 records (Open Payments 2024)
Open Payments discloses payments and transfers of value (meals, travel, consulting, research, royalties) from drug and device makers to providers. This is a transparency signal, not a verdict — such payments are legal and common, and their presence is neither an endorsement nor a criticism. Source: CMS Open Payments, program year 2024.
Practice location
Mailing address
Additional practice locations (2)
- 311 S Clark StCarroll, IA 51401-3038Phone: (712) 792-3581
- 3410 Futures DrSouth Sioux City, NE 68776-3917Phone: (402) 412-7242Fax: (712) 252-5920
Registry dates
- Enumerated
- 2017-01-22
- Last updated
- 2021-06-14
- Certified
- 2021-06-14
Frequently asked questions
- What is Cynthia Johnson's NPI number?
- Cynthia Johnson's National Provider Identifier (NPI) is 1023555638, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Cynthia Johnson's specialty?
- Cynthia 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 Cynthia Johnson located?
- Cynthia Johnson's practice location on file with NPPES is 1021 Nebraska St, Sioux City, IA 51105-1436.
- What is Cynthia Johnson's phone number?
- The practice phone number listed in the NPPES registry for Cynthia Johnson is (712) 252-2477.
- Does Cynthia Johnson accept Medicare?
- Cynthia Johnson is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Cynthia Johnson's NPI active?
- Yes — Cynthia Johnson's NPI (1023555638) is active in the NPPES registry as of the last update on 2021-06-14.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.