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Marenna Rose Cowan, FNP-C

Family Nurse Practitioner in Costa Mesa, CA · enumerated 2019.

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

National Provider Identifier

1063078806

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Registry record

Entity type Individual (Type 1)
Name Marenna Rose Cowan
Credential FNP-C
Sex Female
Practice address 660 Baker St Ste A102, Costa Mesa, CA, 92626
Phone (714) 668-2505
Fax (714) 668-2515
Enumeration date May 16, 2019
Last updated in NPPES Nov 19, 2025

Taxonomy & licenses

163W00000X Registered Nurse Nursing Service Providers · License 95079580 (CA) Secondary
363L00000X Nurse Practitioner Physician Assistants & Advanced Practice Nursing Providers · License 95009121 (CA) Secondary
363LF0000X Family Nurse Practitioner Physician Assistants & Advanced Practice Nursing Providers · License 95009121 (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.

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Frequently asked questions

What specialty is Marenna Cowan?
Marenna Cowan is registered in NPPES with the primary taxonomy of Family 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 2025-11-19.