# Mason Selby · NPI 1851259618

Behavior Technician · San Diego, CA · NPI 1851259618

Mason Selby (NPI 1851259618) is listed in the NPPES registry with the specialty Behavior Technician in San Diego, CA, phone (888) 922-2843, as of the registry file of Jun 8, 2026.

Profile: https://www.gale.care/providers/ca/san-diego/mason-selby-1851259618
Facts changed: 2026-10-22 · hash 91c4d47478a5c26b

## Facts

- Name: Mason Selby (NPPES registry, self-reported, 2026-06-08) {#name}
- Credential: none on record (NPPES registry, not listed, which is not a no, 2026-06-08) {#credential}
- Specialty: Behavior Technician (NPPES registry, self-reported, 2026-06-08) {#specialty}
- Registry stage: as-listed (NPPES registry, self-reported, 2026-06-08) {#registry-stage}
- NPI issued: 2026 (NPPES registry, listed, 2026-06-08) {#npi-issued}
- Practice type: not-sole-proprietor (NPPES registry, self-reported, 2026-06-08) {#practice-type}
- City: San Diego (NPPES registry, self-reported, 2026-06-08) {#city}
- State: CA (NPPES registry, self-reported, 2026-06-08) {#state}
- Phone: (888) 922-2843 (NPPES registry, self-reported, 2026-06-08) {#phone}
- Insurance: Not listed by AIDS Healthcare Foundation (PHP) for Mason Selby (NPI 1851259618) in AIDS Healthcare Foundation (PHP)'s directory, file of Sep 19, 2026. That is not a no. {#ins-not-listed-ahf-fhir-directory}
- Insurance: Not listed by Blue Shield of California for Mason Selby (NPI 1851259618) in Blue Shield of California's directory, file of Oct 22, 2026. That is not a no. {#ins-not-listed-bsc-fhir-directory}
- Insurance: Not listed by CalOptima Health for Mason Selby (NPI 1851259618) in CalOptima Health's directory, file of Oct 11, 2026. That is not a no. {#ins-not-listed-caloptima-fhir-directory}
- Insurance: Not listed by Central California Alliance for Health for Mason Selby (NPI 1851259618) in Central California Alliance for Health's directory, file of Oct 22, 2026. That is not a no. {#ins-not-listed-ccah-fhir-directory}
- Insurance: Not listed by Original Medicare for Mason Selby (NPI 1851259618) in CMS Medicare clinicians file, file of Oct 2, 2026. That is not a no. {#ins-not-listed-cms-medicare-clinicians}
- Insurance: Not listed by Medi-Cal fee-for-service for Mason Selby (NPI 1851259618) in DHCS Medi-Cal fee-for-service enrolment file, file of Oct 19, 2026. That is not a no. {#ins-not-listed-dhcs-ffs-enrolled-2026-10-19}
- Insurance: Not listed by Gold Coast Health Plan for Mason Selby (NPI 1851259618) in Gold Coast Health Plan's directory, file of Oct 9, 2026. That is not a no. {#ins-not-listed-goldcoast-fhir-directory}
- Insurance: Not listed by Health Net for Mason Selby (NPI 1851259618) in Health Net's directory, file of Oct 22, 2026. That is not a no. {#ins-not-listed-healthnet-fhir-directory}
- Insurance: Not listed by Health Plan of San Joaquin for Mason Selby (NPI 1851259618) in Health Plan of San Joaquin's directory, file of Oct 2, 2026. That is not a no. {#ins-not-listed-hpsj-fhir-directory}
- Insurance: Not listed by Inland Empire Health Plan (IEHP) for Mason Selby (NPI 1851259618) in Inland Empire Health Plan (IEHP)'s directory, file of Oct 16, 2026. That is not a no. {#ins-not-listed-iehp-fhir-directory}
- Insurance: Not listed by Kern Family Health Care for Mason Selby (NPI 1851259618) in Kern Family Health Care's directory, file of Oct 9, 2026. That is not a no. {#ins-not-listed-kern-fhir-directory}
- Insurance: Not listed by L.A. Care Health Plan for Mason Selby (NPI 1851259618) in L.A. Care Health Plan's directory, file of Oct 19, 2026. That is not a no. {#ins-not-listed-lacare-fhir-directory}
- Insurance: Not listed by Partnership HealthPlan of California for Mason Selby (NPI 1851259618) in Partnership HealthPlan of California's directory, file of Oct 16, 2026. That is not a no. {#ins-not-listed-partnership-fhir-directory}
- Insurance: Not listed by San Francisco Health Plan for Mason Selby (NPI 1851259618) in San Francisco Health Plan's directory, file of Oct 1, 2026. That is not a no. {#ins-not-listed-sfhp-fhir-directory}

## Answers

- New patients (not on record): Gale has no record of whether Mason Selby (NPI 1851259618) is taking new patients. Ask the office.
- Insurance (not listed, which is not a no): Not listed by AIDS Healthcare Foundation (PHP), Blue Shield of California, CalOptima Health, Central California Alliance for Health, Gold Coast Health Plan, Health Net, Health Plan of San Joaquin, Inland Empire Health Plan (IEHP), Kern Family Health Care, L.A. Care Health Plan, Medi-Cal fee-for-service, Original Medicare, Partnership HealthPlan of California or San Francisco Health Plan for Mason Selby (NPI 1851259618), in the files Gale read for California on Oct 23, 2026. That is not a no. Ask the office.
- First-visit cost (not on record): Gale has no record of what a first visit with Mason Selby (NPI 1851259618) costs. Paying yourself? You can ask for a written Good Faith Estimate before the visit.
- Video visits (not on record): Gale has no record of whether Mason Selby (NPI 1851259618) offers video visits. Ask the office.
- Where (self-reported): Mason Selby (NPI 1851259618) is listed in San Diego, CA by the NPPES registry, as of the registry file of Jun 8, 2026.
- Who they see (not on record): Gale has no record of who Mason Selby (NPI 1851259618) sees. Ask the office.
- What they help with (not on record): Gale has no record of what Mason Selby (NPI 1851259618) helps with beyond the registry specialty. Ask the office.
- Languages (not on record): Gale has no record of the languages Mason Selby (NPI 1851259618) speaks. Ask the office.
- How to book (self-reported): Call (888) 922-2843, the practice phone the NPPES registry lists for Mason Selby (NPI 1851259618) (Jun 8, 2026).
- Next opening (not on record): Gale has no record of the next opening for Mason Selby (NPI 1851259618). Ask the office.

## Sources

- NPPES registry (CMS): file of 2026-06-08 · https://npiregistry.cms.hhs.gov/provider-view/1851259618
- AIDS Healthcare Foundation (PHP)'s directory: file of 2026-09-19
- Blue Shield of California's directory: file of 2026-10-22 · Gale checked 60 listings in this directory by hand on Oct 22, 2026; 23 were wrong, so confirm with the office.
- CalOptima Health's directory: file of 2026-10-11 · Gale checked 12 listings in this directory by hand on Oct 22, 2026; 4 were wrong, so confirm with the office.
- Central California Alliance for Health's directory: file of 2026-10-22
- CMS Medicare clinicians file: file of 2026-10-02 · Gale checked 23 listings in this file by hand on Oct 22, 2026; none were wrong.
- DHCS Medi-Cal fee-for-service enrolment file: file of 2026-10-19
- Gold Coast Health Plan's directory: file of 2026-10-09
- Health Net's directory: file of 2026-10-22 · Gale checked 12 listings in this directory by hand on Oct 22, 2026; 6 were wrong, so confirm with the office.
- Health Plan of San Joaquin's directory: file of 2026-10-02
- Inland Empire Health Plan (IEHP)'s directory: file of 2026-10-16 · Gale checked 12 listings in this directory by hand on Oct 22, 2026; 4 were wrong, so confirm with the office.
- Kern Family Health Care's directory: file of 2026-10-09
- L.A. Care Health Plan's directory: file of 2026-10-19 · Gale checked 12 listings in this directory by hand on Oct 22, 2026; 4 were wrong, so confirm with the office.
- Partnership HealthPlan of California's directory: file of 2026-10-16
- San Francisco Health Plan's directory: file of 2026-10-01

## About these facts

- Status words: How each fact is known. confirmed = Listed: a named directory, CMS file or state file lists it. inferred = Likely: a price file suggests it; a likely match is a lead, not a listing. self-reported: the clinician said it, to the NPPES registry or on Gale. not-listed: a source that lists every clinician it covers was read and does not list this one; that is not a no. unknown: no record; ask the office.
- Dates: The date the source gives this record (YYYY-MM-DD). It is not the date of the event the record describes: an opt-out states its own start and end dates in its sentence.
- Hash: Changes only when a fact changes, never on a re-check.

This provider is not affiliated with Gale. This listing is compiled from the NPPES public registry (CMS).
Terms: https://www.gale.care/agents#terms