Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum

Mark Gregory Sonenschein, NURSE PRACTITIONER

Psychiatric/Mental Health Nurse Practitioner in Scottsdale, AZ · enumerated 2019.

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

National Provider Identifier

1457816597

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Registry record

Entity type Individual (Type 1)

Name Mark Gregory Sonenschein

Credential NURSE PRACTITIONER

Sex Male

Practice address 1465 N Scottsdale Rd Ste 400, Scottsdale, AZ, 85257

Phone (844) 646-3247

Enumeration date Feb 3, 2019

Last updated in NPPES Jun 14, 2023

Taxonomy & licenses

363LP0808X Psychiatric/Mental Health Nurse Practitioner Physician Assistants & Advanced Practice Nursing Providers · License 221933 (AZ) 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.

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Frequently asked questions

Where does Mark Sonenschein practice?

The practice location on file with NPPES is in Scottsdale, AZ. Providers can have multiple locations; NPPES lists the primary practice address.

What is the NPI number for Mark Sonenschein?

The National Provider Identifier (NPI) for Mark Sonenschein is 1457816597, a Type 1 (individual) record in the CMS NPPES registry.

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Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2023-06-14.