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

Dr. Catherine G Winkler, PHD, MPH, APRN

Adult Health Nurse Practitioner in Southbury, CT · enumerated 2016.

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

National Provider Identifier

1174987481

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Registry record

Entity type Individual (Type 1)

Name Dr. Catherine G Winkler

Credential PHD, MPH, APRN

Sex Female

Practice address Southbury, CT, 06488

Phone (203) 262-4200

Fax (203) 264-1534

Enumeration date Apr 12, 2016

Last updated in NPPES Apr 12, 2016

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

Taxonomy & licenses

363LA2200X Adult Health Nurse Practitioner Physician Assistants & Advanced Practice Nursing Providers · License 6526 (CT) Primary

PHD · Doctor of Philosophy: A doctoral degree; in healthcare often held by clinical psychologists and researchers. About the PHD 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 NPI 1174987481 active?

Yes, as of the latest NPPES snapshot, NPI 1174987481 is active (record last updated 2016-04-12).

How do I verify Catherine Winkler's NPI record?

Cross-check NPI 1174987481 against the official CMS registry at npiregistry.cms.hhs.gov. This page mirrors the same public NPPES data with a monthly snapshot.

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Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2016-04-12.