Debra Leyel
Debra Leyel is a Behavior Technician in Fullerton, CA, registered under NPI 1003661562. NPPES records them as a sole proprietor, meaning the practice is not incorporated as a separate legal entity.
Getting there
Here is what surrounds this office in Fullerton, based on OpenStreetMap data collected Oct 12, 2026. Parking is available about 1,001 ft away. If you arrive early, there is a coffee shop 0.49 mi away.
Getting here and what is nearby
Parking 395 ft ~2 min
Parking 929 ft ~4 min
Parking 1,001 ft ~4 min
Convenience ampm 0.37 mi ~8 min
Gas station Arco 0.38 mi ~8 min
2840 Imperial Highway, Fullerton 92835
Restaurant Wendy's 0.39 mi ~8 min
Convenience Circle K 0.41 mi ~9 min
Gas station Mobil 0.41 mi ~9 min
Restaurant Barbeques Galore 0.42 mi ~9 min
2315 Imperial Highway
Restaurant Chick-fil-A 0.42 mi ~9 min
1647 East Imperial Highway, Brea 92821
Mo-Sa 06:00-23:00; Su off
Grocery Trader Joe's 0.43 mi ~9 min
2500 East Imperial Highway, Brea 92821
Mo-Su 08:00-21:00
Coffee Protein Lab 0.49 mi ~10 min
2500 East Imperial Highway, Brea
Coffee The Coffee Bean & Tea Leaf 0.49 mi ~10 min
Grocery Mother's Market 0.49 mi ~10 min
Distances are straight‑line estimates — walking routes may be longer. Hours and phone numbers can change; call ahead to confirm.
Credentials and Medicare
NPPES does not list a state licence number for this record. That is not unusual — organizations and some provider types are not required to file one. Verify current licensure with the relevant state board before care.
This NPI does not appear in the PECOS Medicare enrolment file. Providers who do not bill Medicare — or who bill only through a group's enrolment — will not appear here. It is not a sign of any problem with the registration.
What Behavior Technician covers
The behavior technician is a paraprofessional who practices under the close, ongoing supervision of a behavior analyst or assistant behavior analyst certified by the Behavior Analyst Certification Board and/or credentialed by a state (such as through licensure). The behavior technician is primarily responsible for the implementation of components of behavior-analytic treatment plans developed by the supervisor. That may include collecting data on treatment targets and conducting certain types of behavioral assessments (e.g., stimulus preference assessments). The behavior technician does not design treatment or assessment plans or procedures but provides services as assigned by the supervisor responsible for his or her work. NUCC Health Care Provider Taxonomy, code 106S00000X
The taxonomy records how the provider classifies their own practice. It does not confirm which conditions they currently treat, whether they are accepting new patients, or which insurance they take — call the office for that.
Full NPPES record
An NPI-1 identifies a single person. It stays with the clinician for life, even if they move practice or change state, which is why the address on file can lag behind where they actually work today.
| NPI | 1003661562 valid check digit |
|---|---|
| Entity type | Individual (NPI-1) |
| Enumeration date | Apr 18, 2024 |
| Last updated | Apr 18, 2024 |
| Status | Active |
| Sole proprietor | Yes |
| Gender | Female |
| Practice address |
2974 LONGSPUR DR Fullerton, CA 92835 (714) 329-6796 |
Number check
How the check works, step by step
Every NPI carries a Luhn check digit — the same scheme used on credit cards. CMS prefixes the number with 80840 before computing it, which marks it as a US health identifier.
| Digit | 8 | 0 | 8 | 4 | 0 | 1 | 0 | 0 | 3 | 6 | 6 | 1 | 5 | 6 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Doubled? | — | ×2 | — | ×2 | — | ×2 | — | ×2 | — | ×2 | — | ×2 | — | ×2 |
| Value | 8 | 0 | 8 | 8 | 0 | 2 | 0 | 0 | 3 | 3 | 6 | 2 | 5 | 3 |
Sum = 48 · next multiple of 10 = 50 · check digit = 2 · actual last digit = 2
A valid check digit only means the number is well-formed. It does not mean the provider is licensed, active, or in good standing — those are separate questions answered by the sections above.