Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum

Carlos Alberto Mejia Arce, MD

Family Medicine Physician in Alton, IL · enumerated 2024.

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

National Provider Identifier

1689423923

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Registry record

Entity type Individual (Type 1)

Name Carlos Alberto Mejia Arce

Credential MD

Sex Male

Practice address 2 Memorial Drive Medical Office Bldg. A, Suite 220, Alton, IL, 62002

Phone (618) 433-6299

Enumeration date May 17, 2024

Last updated in NPPES Dec 24, 2025

Taxonomy & licenses

207Q00000X Family Medicine Physician Allopathic & Osteopathic Physicians · License 125083618 (IL) Primary

MD · Doctor of Medicine: A physician who completed medical school (allopathic medicine), residency training, and state licensure. About the MD 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.

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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 Carlos Mejia Arce?

Carlos Mejia Arce is registered in NPPES with the primary taxonomy of Family Medicine Physician. The taxonomy code describes the provider's classification and area of specialization for claims and credentialing.

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Coral Ramos Ayala Family Medicine Physician · Alton, IL NPI 1770332017

Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2025-12-24.