Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum
Karen T Sullivan
Social Worker in Lowell, MA · enumerated 2013.
Data current as of Jul 13, 2026 · sourced from CMS NPPES
National Provider Identifier
1316286263
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Registry record
Entity type Individual (Type 1)
Name Karen T Sullivan
Sex Female
Practice address 319 Wilder St, Lowell, MA, 01851
Phone (978) 452-4522
Enumeration date Feb 12, 2013
Last updated in NPPES Feb 12, 2013
Taxonomy & licenses
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 Karen Sullivan?
Karen Sullivan is registered in NPPES with the primary taxonomy of Social Worker. The taxonomy code describes the provider's classification and area of specialization for claims and credentialing.
Other providers at this practice address
Browse all → Alicia Rapson Mental Health Counselor · Lowell, MA NPI 1710214242 Valerie Krpata Clinical Social Worker · Lowell, MA NPI 1053629840 Betsaida Foran Counselor · Lowell, MA NPI 1194085456 Adam Caires Counselor · Lowell, MA NPI 1184985814 Jonathan Waldo Mental Health Counselor · Lowell, MA NPI 1760746416 Francisco Vicente Counselor · Lowell, MA NPI 1508112343 Kelly Callahan Social Worker · Lowell, MA NPI 1265879530 Richard Burke Social Worker · Lowell, MA NPI 1154768885
Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2013-02-12.