Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum
Mrs. Colleen Sullivan, BCBA
Behavior Analyst in Wilton, CT · enumerated 2021.
Data current as of Jul 13, 2026 · sourced from CMS NPPES
National Provider Identifier
1508437245
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Registry record
Entity type Individual (Type 1)
Name Mrs. Colleen Sullivan
Credential BCBA
Sex Female
Practice address 84 Danbury Rd, Wilton, CT, 06897
Phone (203) 563-9360
Enumeration date Jul 4, 2021
Last updated in NPPES Jul 4, 2021
Taxonomy & licenses
103K00000X Behavior Analyst Behavioral Health & Social Service Providers · License BA.001168 (CT) Primary
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
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.
What specialty is Colleen Sullivan?
Colleen Sullivan is registered in NPPES with the primary taxonomy of Behavior Analyst. The taxonomy code describes the provider's classification and area of specialization for claims and credentialing.
Other providers at this practice address
Browse all → Gail Felice Behavior Analyst · Wilton, CT NPI 1154727824 Nicole Nemchek Behavior Analyst · Wilton, CT NPI 1588060909 Jillian Cano Behavior Analyst · Wilton, CT NPI 1457757700 Lynn Hartigan Behavior Analyst · Wilton, CT NPI 1558734442 Pamela Gerdauskas Konareski Behavior Analyst · Wilton, CT NPI 1770125510
Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2021-07-04.