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Edit this profileAt a glance
- 10333 El Camino Real, Atascadero, CA 93422
About Dr. O'brien-Masonis
Caitlin O'Brien-Masonis, PsyD is a psychologist — clinical practicing in Atascadero, CA. This provider record is associated with NPI 1508679846.
Factual summary compiled by Guide.md from public records; not written by this provider.
Specialty
Credentials & Licensing
Medicare information
Exactly as CMS reports it (National Downloadable File, Opt-Out Affidavits, Order & Referring). Not an insurance directory; confirm coverage with the office.
Contact Information
- (805) 468-2000
- Email not available
Is this your home address or personal number? Hide it
Practice Locations
10333 EL CAMINO REAL
Atascadero, CA 93422
Related providers
Connections drawn from the registry and from what providers have told us. A link here is not a referral or an endorsement.
Other psychologists at this location 8
Same specialty, same street address — most likely the same department or group.
Related specialists at this location 8
Clinically related specialties at the same address — the people this provider most likely works alongside.
Also at this address 4
Providers at the same street address. Each files their own registry entry, so a shared practice often appears under several different names.
Common questions
What is Caitlin O'Brien-Masonis's specialty?
Caitlin O'Brien-Masonis is a psychologist in Atascadero, CA. That is the designation recorded for this NPI in the federal registry, where it is listed as “Psychologist — Clinical”.
NPI registry
Where can I find Caitlin O'Brien-Masonis?
Caitlin O'Brien-Masonis is listed at 10333 El Camino Real, Atascadero, CA 93422. Addresses come from the NPI registry and can lag a move, so confirm before travelling.
NPI registry
How do I contact Caitlin O'Brien-Masonis?
The number on file is (805) 468-2000. Contact the office directly to confirm availability and scheduling.
NPI registry
What is Caitlin O'Brien-Masonis's NPI number?
Caitlin O'Brien-Masonis's National Provider Identifier is 1508679846. 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
How long has Caitlin O'Brien-Masonis been practicing?
Caitlin O'Brien-Masonis 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
Has Caitlin O'Brien-Masonis confirmed this information?
Not yet. This profile is built from public federal data and has not been confirmed by Caitlin O'Brien-Masonis. If this is you, claiming it is free.
Guide.md
Guide.md listings do not constitute medical advice or an endorsement.