Individual
MR. JOHN FERGUS FAHY
Active
Sole proprietor
No
Provider details
NPI number
Gender
Man
Credential
PH.D.
Taxonomy
Speciality
Code
Description
License number
State
103G00000X
Clinical Neuropsychologist
PSY14056
CA
103T00000X
Psychologist
PSY14056
CA
103TP2701X
Group Psychotherapy Psychologist
Primary
PSY14056
CA
103TR0400X
Rehabilitation Psychologist
PSY14056
CA
Other
Enumeration date
02/01/2007
Last updated
09/11/2025
Update your record
If you believe information in your NPPES record is inaccurate, or if you wish to update or deactivate your NPI, you can do so directly with CMS at https://nppes.cms.hhs.gov.
About Stedi
Stedi is the only programmable healthcare clearinghouse. You can use Stedi's APIs to process eligibility checks, claims, remits, and more.
Sign up