Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum
Katherine Sullivan-Maher
School Counselor in Milton, MA · enumerated 2018.
Data current as of Jul 13, 2026 · sourced from CMS NPPES
National Provider Identifier
1225512320
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Registry record
Entity type Individual (Type 1)
Name Katherine Sullivan-Maher
Sex Female
Practice address 43 Briarfield Rd, Milton, MA, 02186
Phone (617) 698-6899
Enumeration date Sep 24, 2018
Last updated in NPPES Sep 24, 2018
Taxonomy & licenses
101YS0200X School Counselor Behavioral Health & Social Service Providers · License 114138-SW-LICSW (MA) 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
What specialty is Katherine Sullivan-Maher?
Katherine Sullivan-Maher is registered in NPPES with the primary taxonomy of School Counselor. 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.
Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2018-09-24.