Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum

Libia Rueda-Matik, MD

Pediatrics Physician in Norwalk, CT · enumerated 2006.

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

National Provider Identifier

1053483578

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Registry record

Entity type Individual (Type 1)

Name Libia Rueda-Matik

Credential MD

Sex Female

Practice address 148 East Avenue, Suite #1l, Norwalk, CT, 06851

Phone (203) 854-6993

Fax (203) 854-9227

Enumeration date Nov 14, 2006

Last updated in NPPES Jul 8, 2007

Taxonomy & licenses

208000000X Pediatrics Physician Allopathic & Osteopathic Physicians · License 038173 (CT) 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.

Read the full guide → Validate an NPI →

Frequently asked questions

What specialty is Libia Rueda-Matik?

Libia Rueda-Matik is registered in NPPES with the primary taxonomy of Pediatrics Physician. 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.

Other providers at this practice address

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Jesse Wexler Diagnostic Radiology Physician · Norwalk, CT NPI 1912972670 Clifford Feller Obstetrics & Gynecology Physician · Norwalk, CT NPI 1174581706 Fairfield County Bariatics and Surgical Specialists PC Surgery Physician · Norwalk, CT NPI 1558310953 Mark Litchman Allergy & Immunology Physician · Norwalk, CT NPI 1447341243 Fairfield County Allergy Asthma & Immunology Associates PC Allergy & Immunology Physician · Norwalk, CT NPI 1083705891 Joseph Sproviero Allergy & Immunology Physician · Norwalk, CT NPI 1780775577 Audrey Bregante Pediatric Nurse Practitioner · Norwalk, CT NPI 1609967496 Aymeric Louit Allergy & Immunology Physician · Norwalk, CT NPI 1881744456

Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2007-07-08.