Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum
Debra Waterhouse Manca, RD
Registered Dietitian in Orinda, CA · enumerated 2007.
Data current as of Jul 13, 2026 · sourced from CMS NPPES
National Provider Identifier
1457579864
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Registry record
Entity type Individual (Type 1)
Name Debra Waterhouse Manca
Credential RD
Sex Female
Practice address 23 Orinda Way, Suite 308, Orinda, CA, 94563
Phone (510) 339-3848
Fax (510) 339-3858
Enumeration date Apr 23, 2007
Last updated in NPPES Jul 8, 2007
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
What is the NPI number for Debra Manca?
The National Provider Identifier (NPI) for Debra Manca is 1457579864, a Type 1 (individual) record in the CMS NPPES registry.
Where does Debra Manca practice?
The practice location on file with NPPES is in Orinda, CA. Providers can have multiple locations; NPPES lists the primary practice address.
Other providers at this practice address
Browse all →Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2007-07-08.