NPI age
— years
Enumerated 2025-11-03
● Active
Type 1 · Individual
Maddy Olivia Castilleja Trejo
Castilleja Trejo is 1 of 49 assistant behavior analyst providers in San Antonio and 1 of 386 in Texas.
Primary specialty
Assistant Behavior Analyst
Licensed in
TX
1 state
Status
Active
No deactivations on record
Last NPPES update
2025-11-03
Source: monthly bulk 2026-05
Sole proprietor
No
May be part of a larger org
How this provider compares
Across 386 active assistant behavior analyst providers in Texas.
NPI age
0 years
↓ 2 yr below median (2 yr)
State licenses
1 state
1% of peers hold multiple states
Subspecialties
0
18% of peers hold subspecialties
NPI lifetime · 2025 → 2026
2025-11Enumerated in NPPES
2025
2026
Where they practice
Practice location
8808 Wind Gate Pkwy
San Antonio, TX 782541784
Mailing address
8808 Wind Gate Pkwy
San Antonio, TX 782541784
Specialties
-
Assistant Behavior Analyst PrimaryAn assistant behavior analyst is qualified by Behavior Analyst Certification Board certification and/or a state-issued license or credential in behavior analysis to practice under the supervision of an appropriately credentialed...
Practice context
Solo or small practice. No other active providers share this practice address in NPPES.
Recently enumerated nearby: 3 new assistant behavior analyst providers have been added in San Antonio in the last 180 days.
See all →
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- Confirm the NPI on NPPES.The CMS registry is the system of record. Open NPPES →
- Check the state license is currently active.State licensing boards publish current status; NPPES does not.
- Confirm payer enrollment if billing.NPI presence does not guarantee active enrollment with Medicare, Medicaid, or commercial payers.