Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum
Kathryn Ann Alsup, RD, LDN
Registered Dietitian in Waltham, MA · enumerated 2006.
Data current as of Jul 13, 2026 · sourced from CMS NPPES
National Provider Identifier
1194775825
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Registry record
Entity type Individual (Type 1)
Name Kathryn Ann Alsup
Credential RD, LDN
Sex Female
Practice address 32 South St, Suite 300, Waltham, MA, 02453
Phone (781) 642-1250
Fax (781) 207-6415
Enumeration date May 11, 2006
Last updated in NPPES May 7, 2014
Taxonomy & licenses
RD · Registered Dietitian: A nutrition professional credentialed by the Commission on Dietetic Registration.
About the RD credential
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
Where does Kathryn Alsup practice?
The practice location on file with NPPES is in Waltham, MA. Providers can have multiple locations; NPPES lists the primary practice address.
What is the NPI number for Kathryn Alsup?
The National Provider Identifier (NPI) for Kathryn Alsup is 1194775825, a Type 1 (individual) record in the CMS NPPES registry.
Other providers at this practice address
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Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2014-05-07.