CAITLIN O'BRIEN-MASONIS PSY.D
NPI 1508679846
Psychologist - Clinical in Atascadero, CA

Q: What is Caitlin O'brien-masonis's NPI number?

The NPI number for Caitlin O'brien-masonis is 1508679846. It was assigned to this individual provider in the NPPES registry on January 30, 2025.

Q: What is Caitlin O'brien-masonis's specialty?

The primary specialty registered for this NPI is Psychologist, specializing in Clinical, with taxonomy code 103TC0700X.

Active since January 30, 2025PECOS Enrolled

10333 EL CAMINO REAL, ATASCADERO, CA 93422(805) 468-2000 Get Directions Write a Review

NPPES record last updated: February 5, 2025. Verified against the NPPES registry weekly; last sync: August 16, 2026.

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About Caitlin O'brien-masonis Psy.d NPPES

Official registry information on file with the National Plan and Provider Enumeration System.

CAITLIN O'BRIEN-MASONIS PSY.D (NPI 1508679846) is an individual clinical provider in Atascadero, California, licensed in California (PSY35616) and active in the NPI registry since January 2025. She is enrolled in Medicare PECOS.

NPPES Registry Identity

NPI1508679846

Entity TypeIndividualFemale

Primary Taxonomy103TC0700X

Provider Legal NameCAITLIN O'BRIEN-MASONISCredential: PSY.D

Location Address10333 EL CAMINO REALAtascadero, CA 93422-5808

Mailing AddressPo Box 2377Atascadero, CA 93423-2377 · (301) 742-2910

Phone(805) 468-2000

Sole ProprietorNo

Enumeration DateJanuary 30, 2025

Last NPPES UpdateFebruary 5, 2025

NPPES CertifiedFebruary 5, 2025

✔ NPI 1508679846 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses

★ Primary SpecialtyPsychologist · ClinicalBehavioral Health & Social Service Providers

Taxonomy Code103TC0700X

License✔ Licensed in CA · PSY35616

Definition

A psychologist who provides continuing and comprehensive mental and behavioral health care for individuals and families; consultation to agencies and communities; training, education and supervision; and research-based practice. It is a specialty in breadth -- one that is broadly inclusive of severe psychopathology -- and marked by comprehensiveness and integration of knowledge and skill from a broad array of disciplines within and outside of psychology proper. The scope of clinical psychology encompasses all ages, multiple diversities and varied systems.

10333 EL CAMINO REAL, Atascadero, CA 93422

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Medicare Participation & PECOS CMS

Medicare enrollment, assignment, and ordering and referring status from the CMS PECOS system.

Medicare Enrollment Status

✔

Enrolled in Medicare (PECOS)

Caitlin O'brien-masonis Psy.d is registered in the CMS Provider Enrollment, Chain and Ownership System (PECOS).

Eligible to Order & Refer– Part B Labs & Imaging✔ Durable Medical Equipment– Home Health Agency– Power Mobility DevicesPer the CMS Ordering and Referring file. Eligibility means Medicare pays claims that this provider orders or refers for these categories.

Physician Visit Costs CMS claims · ZIP area

Typical Medicare office-visit costs in the 93422 ZIP code area, from fee-for-service claims. These are area statistics, not this provider’s prices; actual charges vary by service and coverage.

New Patient

$178.89 typical visit price

range $59.84 – $178.89

Typical copayment $44.72 (range $14.96 – $44.72)

Most-billed visit code 99205

Established Patient

$104.82 typical visit price

range $19.70 – $146.55

Typical copayment $26.20 (range $4.92 – $36.63)

Most-billed visit code 99214

Amounts reflect what Medicare beneficiaries in this ZIP area are typically charged for office visits. Patients with other coverage should check their individual plans.

Other Providers at the Same Location NPPES 20

Providers registered at the same practice address, or within the immediate area, according to the NPPES registry.

GIZELLA MARIA RAYMOND N.P., R.N.

Nurse Practitioner (Psychiatric/Mental Health)