Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum
Phyllis M Addis, LCSW
Clinical Social Worker in Chico, CA · enumerated 2006.
Data current as of Jul 13, 2026 · sourced from CMS NPPES
National Provider Identifier
1811913882
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Registry record
Entity type Individual (Type 1)
Name Phyllis M Addis
Credential LCSW
Sex Female
Practice address 845 W East Ave, Chico, CA, 95926
Phone (530) 896-4851
Fax (530) 896-9407
Enumeration date Jul 14, 2006
Last updated in NPPES Jul 8, 2007
Taxonomy & licenses
1041C0700X Clinical Social Worker Behavioral Health & Social Service Providers · License LCSW1164C (AL) Primary
LCSW · Licensed Clinical Social Worker: A social worker licensed for clinical practice including mental-health therapy.
About the LCSW 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 Phyllis Addis?
The National Provider Identifier (NPI) for Phyllis Addis is 1811913882, a Type 1 (individual) record in the CMS NPPES registry.
Where does Phyllis Addis practice?
The practice location on file with NPPES is in Chico, CA. Providers can have multiple locations; NPPES lists the primary practice address.
Other providers at this practice address
Browse all → Franklin Bailey General Practice Dentistry · Chico, CA NPI 1689667230 Walid Faraj Family Medicine Physician · Chico, CA NPI 1396736245 Brian Dudar General Practice Dentistry · Chico, CA NPI 1942281746 Mauro Moreno Physician Assistant · Chico, CA NPI 1629142971 Shari Lewis Nurse Practitioner · Chico, CA NPI 1841351707 Michael Clarke Psychologist · Chico, CA NPI 1023167939 Northern Valley Indian Health, Inc Clinic/Center · Chico, CA NPI 1265567127 Rocio Wilson General Practice Dentistry · Chico, CA NPI 1265622419
Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2007-07-08.