Rosemarie Serna
Rosemarie Serna is a Behavior Technician in San Antonio, TX, registered under NPI 1003513805.
Getting there
Here is what surrounds this office in San Antonio, based on OpenStreetMap data collected Sep 22, 2026. Parking is available about 0.40 mi away. The nearest transit stop is 0.23 mi away. A pharmacy sits 0.30 mi from the entrance (Costco Pharmacy), which helps if you leave with a prescription. If you arrive early, there is a coffee shop 0.27 mi away.
Getting here and what is nearby
Hotel La Quinta Inn 745 ft ~3 min
Restaurant Brick House Tavern + Tap 840 ft ~4 min
1011 North Loop 1604 East, San Antonio 78258
Hotel Residence Inn by Marriott San Antonio North/Stone Oak 0.20 mi ~5 min
Restaurant Krispy Kreme 0.21 mi ~5 min
1117 North Loop 1604 East, San Antonio 78258
Transit 0.22 mi ~5 min
Hotel Staybridge Suites 0.22 mi ~5 min
808 North Loop 1604 East, San Antonio 78232
Transit 0.23 mi ~5 min
Transit 0.23 mi ~5 min
Coffee Local Coffee 0.27 mi ~6 min
Parking 0.27 mi ~6 min
Restaurant Salata 0.29 mi ~6 min
700 East Sonterra Boulevard, San Antonio 78258
Mo-Sa 10:45-21:00; Su off
Pharmacy Costco Pharmacy 0.30 mi ~6 min
Parking 0.37 mi ~8 min
Parking 0.40 mi ~8 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 | 1003513805 valid check digit |
|---|---|
| Entity type | Individual (NPI-1) |
| Enumeration date | Feb 13, 2023 |
| Last updated | Aug 16, 2023 |
| Status | Active |
| Sole proprietor | No |
| Gender | Female |
| Practice address |
903 PROTON RD San Antonio, TX 78258 (210) 228-9923 |
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 | 5 | 1 | 3 | 8 | 0 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Doubled? | — | ×2 | — | ×2 | — | ×2 | — | ×2 | — | ×2 | — | ×2 | — | ×2 |
| Value | 8 | 0 | 8 | 8 | 0 | 2 | 0 | 0 | 3 | 1 | 1 | 6 | 8 | 0 |
Sum = 45 · next multiple of 10 = 50 · check digit = 5 · actual last digit = 5
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.