Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum
Ms. Gwendolyn R Riddell, CNM, APN
Midwife in Santa Rosa, CA · enumerated 2008.
Data current as of Jul 13, 2026 · sourced from CMS NPPES
National Provider Identifier
1033382213
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Registry record
Entity type Individual (Type 1)
Name Ms. Gwendolyn R Riddell
Credential CNM, APN
Sex Female
Practice address 1140 Sonoma Ave Ste 3, Santa Rosa, CA, 95405
Phone (707) 766-4276
Enumeration date Apr 8, 2008
Last updated in NPPES May 7, 2024
Taxonomy & licenses
CNM · Certified Nurse Midwife: An advanced practice nurse specializing in pregnancy, childbirth, and reproductive care.
About the CNM 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 Gwendolyn Riddell practice?
The practice location on file with NPPES is in Santa Rosa, CA. Providers can have multiple locations; NPPES lists the primary practice address.
What is the NPI number for Gwendolyn Riddell?
The National Provider Identifier (NPI) for Gwendolyn Riddell is 1033382213, a Type 1 (individual) record in the CMS NPPES registry.
Other providers at this practice address
Browse all →Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2024-05-07.