Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum Sole proprietor

Dr. Charles L.G. Halasz, M.D.

Dermatology Physician in Norwalk, CT · enumerated 2006 · practices at Charles L. G. Halasz, MD.

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

National Provider Identifier

1538137450

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Registry record

Entity type Individual (Type 1)

Name Dr. Charles L.G. Halasz

Credential M.D.

Sex Male

Practice address Norwalk, CT, 06851

Phone (203) 853-1874

Fax (203) 831-0007

Enumeration date Mar 8, 2006

Last updated in NPPES Jun 7, 2024

Street address withheld: NPPES sole-proprietor addresses can be home addresses. See our data policy.

Taxonomy & licenses

207N00000X Dermatology Physician Allopathic & Osteopathic Physicians · License 142872 (NY) Secondary

207N00000X Dermatology Physician Allopathic & Osteopathic Physicians · License 021431 (CT) Primary

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

Other identifiers

Identifier	Type	State	Issuer
001214311	Medicaid	CT	-

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 is the NPI number for Charles Halasz?

The National Provider Identifier (NPI) for Charles Halasz is 1538137450, a Type 1 (individual) record in the CMS NPPES registry.

Where does Charles Halasz practice?

The practice location on file with NPPES is in Norwalk, CT. Providers can have multiple locations; NPPES lists the primary practice address.

Other providers at this practice address

Browse all →

Naomi Hersh Dentist · Norwalk, CT NPI 1710909957 Hiroshi Tsuyuki Pediatric Dentistry · Norwalk, CT NPI 1194889725 Michael Wolfman Pediatric Dentistry · Norwalk, CT NPI 1487718003 Charles L. G. Halasz, MD Family Nurse Practitioner · Norwalk, CT NPI 1003186651 Jesenia Hernandez Speech-Language Pathologist · Norwalk, CT NPI 1255761557

Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2024-06-07.