NPI Portal NPI Lookup & Verification

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

Dr. Ruth L Light, MD

Occupational Medicine Physician in Danbury, CT · enumerated 2007 · practices at Pediatric Associates of Western Ct.

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

National Provider Identifier

1831218486

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Registry record

Entity type Individual (Type 1)
Name Dr. Ruth L Light
Credential MD
Sex Female
Practice address Danbury, CT, 06810
Phone (203) 207-3300
Enumeration date Mar 28, 2007
Last updated in NPPES Jul 8, 2007

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

Taxonomy & licenses

2083X0100X Occupational Medicine Physician Allopathic & Osteopathic Physicians · License 038228 (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
2032073300 Other CT TELEPHONE NUMBER

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 Ruth Light?
The National Provider Identifier (NPI) for Ruth Light is 1831218486, a Type 1 (individual) record in the CMS NPPES registry.
Where does Ruth Light practice?
The practice location on file with NPPES is in Danbury, CT. Providers can have multiple locations; NPPES lists the primary practice address.

Other providers at this practice address

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