Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum

Mrs. Melissa A Portell, WHNP

Women's Health Nurse Practitioner in Saint Louis, MO · enumerated 2008 · practices at Mercy Clinic Maternal Fetal Medicine LLC.

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

National Provider Identifier

1164667838

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Registry record

Entity type Individual (Type 1)

Name Mrs. Melissa A Portell

Credential WHNP

Sex Female

Practice address 621 S New Ballas Rd Ste 2007b, Saint Louis, MO, 63141

Phone (314) 991-5000

Enumeration date Dec 10, 2008

Last updated in NPPES Oct 13, 2021

Taxonomy & licenses

363LW0102X Women's Health Nurse Practitioner Physician Assistants & Advanced Practice Nursing Providers · License 155597 (MO) 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

How do I verify Melissa Portell's NPI record?

Cross-check NPI 1164667838 against the official CMS registry at npiregistry.cms.hhs.gov. This page mirrors the same public NPPES data with a monthly snapshot.

Is NPI 1164667838 active?

Yes, as of the latest NPPES snapshot, NPI 1164667838 is active (record last updated 2021-10-13).

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Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2021-10-13.