Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum Sole proprietor

Dr. Sultanna Mccormick-Stewart

Marriage & Family Therapist in Fairfield, CA · enumerated 2016 · practices at Solano Dermatology Associates Inc.

Data current as of Jul 13, 2026 · sourced from CMS NPPES

National Provider Identifier

1235589979

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Registry record

Entity type Individual (Type 1)

Name Dr. Sultanna Mccormick-Stewart

Sex Female

Practice address Fairfield, CA, 94534

Phone (336) 991-7511

Enumeration date Jun 14, 2016

Last updated in NPPES Oct 4, 2024

Street address withheld: NPPES sole-proprietor addresses can be home addresses. See our data policy.

Taxonomy & licenses

106H00000X Marriage & Family Therapist Behavioral Health & Social Service Providers Secondary

172V00000X Community Health Worker Other Service Providers Secondary

106H00000X Marriage & Family Therapist Behavioral Health & Social Service Providers · License 150241 (CA) Primary

What is an NPI number?

A National Provider Identifier (NPI) is a unique 10-digit number that CMS assigns to every U.S. healthcare provider and organization under HIPAA. Type 1 NPIs identify individual providers; Type 2 NPIs identify organizations. The NPI appears on insurance claims, prescriptions, and credentialing paperwork, and never changes, even if the provider moves or changes specialty.

Read the full guide → Validate an NPI →

Frequently asked questions

Is NPI 1235589979 active?

Yes, as of the latest NPPES snapshot, NPI 1235589979 is active (record last updated 2024-10-04).

How do I verify Sultanna Mccormick-Stewart's NPI record?

Cross-check NPI 1235589979 against the official CMS registry at npiregistry.cms.hhs.gov. This page mirrors the same public NPPES data with a monthly snapshot.

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Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2024-10-04.