Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum

Mary Queisser-Daniels

Behavior Analyst in Boston, MA · enumerated 2014.

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

National Provider Identifier

1417363425

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Registry record

Entity type Individual (Type 1)

Name Mary Queisser-Daniels

Sex Female

Practice address 418 Centre St Unit C, Boston, MA, 02130

Phone (800) 249-1266

Enumeration date Jul 10, 2014

Last updated in NPPES Dec 14, 2023

Taxonomy & licenses

103K00000X Behavior Analyst Behavioral Health & Social Service Providers 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.

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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 Mary Queisser-Daniels?

Mary Queisser-Daniels 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.

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Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2023-12-14.