Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum
Marilla L Fox, PHD
Psychologist in Ames, IA · enumerated 2006.
Data current as of Jul 13, 2026 · sourced from CMS NPPES
National Provider Identifier
1427088699
See something wrong? Report a correction
Registry record
Entity type Individual (Type 1)
Name Marilla L Fox
Credential PHD
Sex Female
Practice address 125 S 3rd St, Ames, IA, 50010
Phone (515) 232-5811
Fax (515) 232-7491
Enumeration date Jul 4, 2006
Last updated in NPPES Jul 8, 2007
Taxonomy & licenses
PHD · Doctor of Philosophy: A doctoral degree; in healthcare often held by clinical psychologists and researchers.
About the PHD 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 Marilla Fox practice?
The practice location on file with NPPES is in Ames, IA. Providers can have multiple locations; NPPES lists the primary practice address.
What is the NPI number for Marilla Fox?
The National Provider Identifier (NPI) for Marilla Fox is 1427088699, a Type 1 (individual) record in the CMS NPPES registry.
Other providers at this practice address
Browse all → James Judkins Social Worker · Ames, IA NPI 1962437848 Kay Haubrich Mental Health Counselor · Ames, IA NPI 1700997228 Glenice Varley Mental Health Counselor · Ames, IA NPI 1902917479 Christine Simmons Mental Health Counselor · Ames, IA NPI 1801999040 Jill Hill Addiction (Substance Use Disorder) Counselor · Ames, IA NPI 1558414821 Elizabeth Rohde Mental Health Counselor · Ames, IA NPI 1265664858 Shawna Kier Mental Health Counselor · Ames, IA NPI 1023328150 Becky Estabrook Mental Health Counselor · Ames, IA NPI 1841593324
Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2007-07-08.