Provider Profile
Listed in the NPI registry as a marriage & family therapist, Cassie Duffy practices in Valencia, CA. Cassie is also listed as specializing in professional counselor.
Summarised automatically from public NPI registry and CMS Medicare data. Not written or reviewed by this provider. Claim this profile to replace it.
License numbers are what the provider reported to NPPES when the NPI was issued or updated. NPPES does not verify licensure; confirm current standing with the state licensing board.
28494 WESTINGHOUSE PL STE 304
Valencia, CA 91355
Cassie Duffy is a marriage and family therapist in Valencia, CA. That is the designation recorded for this NPI in the federal registry, where it is listed as “Marriage & Family Therapist”.
NPI registry
Cassie Duffy is listed at 28494 Westinghouse Pl Ste 304, Valencia, CA 91355. Addresses come from the NPI registry and can lag a move, so confirm before travelling.
NPI registry
The number on file is (323) 476-0691. Guide.md cannot book appointments or pass on messages — please call the office directly.
NPI registry
Cassie Duffy's National Provider Identifier is 1912790809. It is issued by the Centers for Medicare & Medicaid Services and is unique and permanent — it does not change if they move practice.
NPI registry
Cassie Duffy has 1+ years experience. Registered with an NPI since 2025. National Provider Identifiers only began in 2005, so a provider who qualified earlier may have practiced for longer than this.
NPI registry
Not yet. This profile is built from public federal data and has not been confirmed by Cassie Duffy. If this is you, claiming it is free.
Guide.md
Provider data sourced from the NPPES NPI Registry and CMS public datasets. Information is provided for reference and is not medical advice.