Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum
Yvonne Ann Ruddy-Stein, APRN
Nurse Practitioner in Southbury, CT · enumerated 2006.
Data current as of Jul 13, 2026 · sourced from CMS NPPES
National Provider Identifier
1992738116
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Registry record
Entity type Individual (Type 1)
Name Yvonne Ann Ruddy-Stein
Credential APRN
Sex Female
Practice address 900 Main St S, Bldg 2 Suite 101, Southbury, CT, 06488
Phone (203) 262-2300
Fax (203) 262-2305
Enumeration date Jul 9, 2006
Last updated in NPPES Oct 28, 2021
Taxonomy & licenses
363LA2100X Acute Care Nurse Practitioner Physician Assistants & Advanced Practice Nursing Providers · License 003121 (CT) Secondary
363LA2200X Adult Health Nurse Practitioner Physician Assistants & Advanced Practice Nursing Providers · License 003121 (CT) Secondary
363L00000X Nurse Practitioner Physician Assistants & Advanced Practice Nursing Providers · License 003121 (CT) Primary
APRN · Advanced Practice Registered Nurse: An umbrella credential covering NPs, CRNAs, CNMs, and clinical nurse specialists.
About the APRN credential
Other identifiers
| Identifier | Type | State | Issuer |
|---|---|---|---|
| 004250148 | 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.
Frequently asked questions
What specialty is Yvonne Ruddy-Stein?
Yvonne Ruddy-Stein is registered in NPPES with the primary taxonomy of Nurse Practitioner. 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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Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2021-10-28.