Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum

Merna Guirguis

Psychiatry Physician in Pontiac, MI · enumerated 2021.

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

National Provider Identifier

1871269407

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Registry record

Entity type Individual (Type 1)

Name Merna Guirguis

Sex Female

Practice address 461 W Huron St, Pontiac, MI, 48341

Phone (248) 857-7200

Enumeration date Aug 23, 2021

Last updated in NPPES Aug 23, 2021

Taxonomy & licenses

2084P0800X Psychiatry Physician Allopathic & Osteopathic Physicians · License 4351048815 (MI) 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

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 Merna Guirguis?

Merna Guirguis is registered in NPPES with the primary taxonomy of Psychiatry Physician. The taxonomy code describes the provider's classification and area of specialization for claims and credentialing.

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Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2021-08-23.