Lawrence Calnan
Lawrence Calnan is a Behavior Technician in Downey, CA, registered under NPI 1003744087.
Getting there
Here is what surrounds this office in Downey, based on OpenStreetMap data collected Oct 19, 2026. Parking is available about 355 ft away. The nearest transit stop is 0.41 mi away, served by Imperial & Paramount. If you arrive early, there is a coffee shop 0.35 mi away.
Getting here and what is nearby
Parking 229 ft ~1 min
Parking 335 ft ~2 min
Parking 355 ft ~2 min
Transit Rives & Imperial 572 ft ~3 min
Restaurant Domino's 992 ft ~4 min
7840 Imperial Highway, Downey 90242
Mo-Th 10:00-24:00; Fr-Sa 10:00-01:00; Su 10:00-24:00
Transit Rives & Quill (Community & Senior Center) 0.25 mi ~6 min
Restaurant Jack in the Box 0.25 mi ~5 min
Grocery Vallarta 0.26 mi ~6 min
Gas station 76 0.27 mi ~6 min
Restaurant Burger King 0.33 mi ~7 min
7957 Imperial Highway, Downey 90242-3434
07:00-21:00
Coffee Starbucks 0.35 mi ~7 min
Convenience ExtraMile 0.36 mi ~8 min
Gas station Chevron 0.37 mi ~8 min
Gas station GasEnGo 0.37 mi ~8 min
Transit Imperial & Paramount 0.41 mi ~9 min
Convenience ampm 0.42 mi ~9 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 | 1003744087 valid check digit |
|---|---|
| Entity type | Individual (NPI-1) |
| Enumeration date | May 11, 2026 |
| Last updated | May 11, 2026 |
| Status | Active |
| Sole proprietor | No |
| Gender | Male |
| Practice address |
7700 IMPERIAL HWY STE A Downey, CA 90242 (562) 454-0158 |
| Mailing address |
996 ROYAL MARCO WAY Marco Island, FL 34145 |
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 | 7 | 4 | 4 | 0 | 8 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Doubled? | — | ×2 | — | ×2 | — | ×2 | — | ×2 | — | ×2 | — | ×2 | — | ×2 |
| Value | 8 | 0 | 8 | 8 | 0 | 2 | 0 | 0 | 3 | 5 | 4 | 8 | 0 | 7 |
Sum = 53 · next multiple of 10 = 60 · check digit = 7 · actual last digit = 7
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.