Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum
Claudia Knaack
Registered Nurse in Larkspur, CA · enumerated 2026.
Data current as of Jul 13, 2026 · sourced from CMS NPPES
National Provider Identifier
1215882816
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Registry record
Entity type Individual (Type 1)
Name Claudia Knaack
Sex Female
Practice address 5 Bon Air Rd, Larkspur, CA, 94939
Phone (415) 448-1400
Enumeration date Feb 28, 2026
Last updated in NPPES Feb 28, 2026
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 Claudia Knaack?
The National Provider Identifier (NPI) for Claudia Knaack is 1215882816, a Type 1 (individual) record in the CMS NPPES registry.
Where does Claudia Knaack practice?
The practice location on file with NPPES is in Larkspur, CA. Providers can have multiple locations; NPPES lists the primary practice address.
Other providers at this practice address
Browse all → Landy Lum Specialist · Larkspur, CA NPI 1932198900 Dora Weber Specialist · Larkspur, CA NPI 1487643458 Julie Williamson Hand Occupational Therapist · Larkspur, CA NPI 1013906080 Leslie Donohue Physical Therapist · Larkspur, CA NPI 1396720512 Audrey Roberts Specialist · Larkspur, CA NPI 1750344859 Jason Mattox Physical Therapist · Larkspur, CA NPI 1417995606 The Hand & Physical Therapy Center of Marin, Ptpc Specialist · Larkspur, CA NPI 1063443935 Brian Hauswirth Physical Therapist · Larkspur, CA NPI 1356376040
Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2026-02-28.