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

Mrs. Mercedes Longshaw Mortensen, AGNP-C

Gerontology Nurse Practitioner in Salt Lake City, UT · enumerated 2021 · practices at Ma Bo Inc.

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

National Provider Identifier

1811660764

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Registry record

Entity type Individual (Type 1)
Name Mrs. Mercedes Longshaw Mortensen
Credential AGNP-C
Sex Female
Practice address Salt Lake City, UT, 84102
Phone (801) 485-5055
Enumeration date Jul 27, 2021
Last updated in NPPES Jul 30, 2025

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

Taxonomy & licenses

363LA2200X Adult Health Nurse Practitioner Physician Assistants & Advanced Practice Nursing Providers · License 283800-4405 (UT) Secondary
363LG0600X Gerontology Nurse Practitioner Physician Assistants & Advanced Practice Nursing Providers · License 283800-4405 (UT) 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

What specialty is Mercedes Mortensen?
Mercedes Mortensen is registered in NPPES with the primary taxonomy of Gerontology Nurse Practitioner. The taxonomy code describes the provider's classification and area of specialization for claims and credentialing.
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.

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Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2025-07-30.