Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum

Karen Buist-Baker, RN, CCM,BS, MCG, LNC

Case Management Registered Nurse in Mission Viejo, CA · enumerated 2015.

Data current as of Jul 13, 2026 · sourced from CMS NPPES

National Provider Identifier

1225427198

Verified

See something wrong? Report a correction

Registry record

Entity type Individual (Type 1)

Name Karen Buist-Baker

Credential RN, CCM,BS, MCG, LNC

Sex Female

Practice address 27001 La Paz Rd Ste 201, Mission Viejo, CA, 92691

Phone (949) 716-1266

Fax (949) 716-4095

Enumeration date Jan 15, 2015

Last updated in NPPES Jan 15, 2015

Taxonomy & licenses

163WC0400X Case Management Registered Nurse Nursing Service Providers · License 22346 (CA) Primary

RN · Registered Nurse: A nurse who completed an accredited nursing program and passed the NCLEX-RN licensure exam. About the RN 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.

Read the full guide → Validate an NPI →

Frequently asked questions

What is the NPI number for Karen Buist-Baker?

The National Provider Identifier (NPI) for Karen Buist-Baker is 1225427198, a Type 1 (individual) record in the CMS NPPES registry.

Where does Karen Buist-Baker practice?

The practice location on file with NPPES is in Mission Viejo, CA. Providers can have multiple locations; NPPES lists the primary practice address.

Other providers at this practice address

Browse all →

Karla Benzl Psychiatry Physician · Mission Viejo, CA NPI 1962794073 Meg Elam Clinical Social Worker · Mission Viejo, CA NPI 1871077875

Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2015-01-15.