Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum

Mark H Powell, MSN, RN

Psychiatric/Mental Health Registered Nurse in Lake Havasu City, AZ · enumerated 2010.

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

National Provider Identifier

1689991887

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Registry record

Entity type Individual (Type 1)

Name Mark H Powell

Credential MSN, RN

Sex Male

Practice address 675 Thunderbolt Ave, Lake Havasu City, AZ, 86406

Phone (928) 486-2910

Enumeration date Apr 27, 2010

Last updated in NPPES Jan 15, 2024

Taxonomy & licenses

163W00000X Registered Nurse Nursing Service Providers · License RN077937 (AZ) Secondary

163WA2000X Administrator Registered Nurse Nursing Service Providers · License RN077937 (AZ) Secondary

163WP0808X Psychiatric/Mental Health Registered Nurse Nursing Service Providers · License RN077937 (AZ) Primary

RN · Registered Nurse: A nurse who completed an accredited nursing program and passed the NCLEX-RN licensure exam. About the RN credential

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 this the official NPI registry?

No. NPI Portal is a private site built on public CMS NPPES data. The official registry is npiregistry.cms.hhs.gov, operated by CMS.

What specialty is Mark Powell?

Mark Powell is registered in NPPES with the primary taxonomy of Psychiatric/Mental Health Registered Nurse. The taxonomy code describes the provider's classification and area of specialization for claims and credentialing.

Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2024-01-15.