Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum
Rachel Mallard
Behavior Analyst in Waltham, MA · enumerated 2018.
Data current as of Jul 13, 2026 · sourced from CMS NPPES
National Provider Identifier
1851862528
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Registry record
Entity type Individual (Type 1)
Name Rachel Mallard
Sex Male
Practice address 303 Wyman St Ste 300, Waltham, MA, 02451
Phone (800) 249-1266
Enumeration date Dec 6, 2018
Last updated in NPPES Dec 6, 2018
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
What is the NPI number for Rachel Mallard?
The National Provider Identifier (NPI) for Rachel Mallard is 1851862528, a Type 1 (individual) record in the CMS NPPES registry.
Where does Rachel Mallard practice?
The practice location on file with NPPES is in Waltham, MA. Providers can have multiple locations; NPPES lists the primary practice address.
Other providers at this practice address
Browse all → Annalisa Hurley Speech-Language Pathologist · Waltham, MA NPI 1437410743 Home Qare Home Health Agency · Waltham, MA NPI 1821339714 Lindsey Mower Speech-Language Pathologist · Waltham, MA NPI 1669894283 Stephanie Hayes Physical Therapist · Waltham, MA NPI 1912376948 Allison Lenehan Physical Therapist · Waltham, MA NPI 1740651199 Behavioral Health Works, Massachusetts, Inc. Behavior Analyst · Waltham, MA NPI 1447613096 Gabriela Lino Behavior Technician · Waltham, MA NPI 1619471489 Adrienne Silva Occupational Therapist · Waltham, MA NPI 1336645639
Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2018-12-06.