Sierra Orr, COTA
Sierra Orr, COTA is an Occupational Therapy Assistant in Arlington, TX, registered under NPI 1003579475. 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 Arlington, based on OpenStreetMap data collected Oct 8, 2026. Parking is available about 0.52 mi away. There is EV charging 0.22 mi from the office — useful if you are driving in from out of town. If you arrive early, there is a coffee shop 0.25 mi away.
Getting here and what is nearby
EV charging 0.22 mi ~5 min
Parking 0.22 mi ~5 min
Hotel Hampton Inn & Suites 0.23 mi ~5 min
Coffee Savor Coffee Bar 0.25 mi ~5 min
1101 #101 East Bardin Road, 76018
Mo-Th 07:00-20:00; Fr 07:00-21:00; Sa 08:00-21:00; Su 08:00-20:00
Convenience EZ Mart 0.25 mi ~5 min
4601 South Collins Street
Gas station Shell 0.26 mi ~6 min
4601 South Collins Street
Hotel Homewood Suites 0.27 mi ~6 min
Restaurant Taco Bell 0.30 mi ~7 min
Hotel Fairfield Inn & Suites Dallas Arlington South 0.32 mi ~7 min
Restaurant Sonic 0.34 mi ~7 min
4301 South Collins Street, Arlington 76018
Mo-Th 07:00-23:00; Fr-Sa 07:00-24:00; Su 07:00-23:00
Convenience QuikTrip 0.35 mi ~8 min
Gas station Homewood Suites 0.37 mi ~8 min
Restaurant McDonald's 0.43 mi ~9 min
Parking 0.52 mi ~11 min
Distances are straight‑line estimates — walking routes may be longer. Hours and phone numbers can change; call ahead to confirm.
Credentials and Medicare
| Licence | State | Specialty |
|---|---|---|
| 216924 | TX | Occupational Therapy Assistant primary |
This provider holds licence 216924 issued in TX. A licence number in NPPES reflects what was filed at registration — it does not confirm the licence is still active today.
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 Occupational Therapy Assistant covers
An occupational therapy assistant is a person who has graduated from an occupational therapy assistant program accredited by the Accreditation Council for Occupational Therapy Education (ACOTE) or predecessor organizations, has successfully completed a period of supervised fieldwork experience required by the accredited occupational therapy assistant program, has passed a nationally recognized entry-level examination for occupational therapy assistants, and fulfills state requirements for licensure, certification, or registration. An occupational therapy assistant provides interventions under the supervision of an occupational therapist which emphasize the therapeutic use of everyday life activities (i.e., occupations) with individuals or groups for the purpose of facilitating participation in roles and situations and in home, school, workplace, community and other settings. Occupational therapy services are provided for the purpose of promoting health and wellness and are provided to those who have or are at risk for developing an illness, injury, disease, disorder, condition, impairment, disability, activity limitation, or participation restriction. Occupational therapy assistants address the physical, cognitive, psychosocial, sensory, and other aspects of occupational performance in a variety of contexts to support engagement in everyday life activities that affect health, well-being, and quality of life. NUCC Health Care Provider Taxonomy, code 224Z00000X
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 | 1003579475 valid check digit |
|---|---|
| Entity type | Individual (NPI-1) |
| Enumeration date | Oct 21, 2021 |
| Last updated | Oct 21, 2021 |
| Status | Active |
| Sole proprietor | Yes |
| Gender | Female |
| Credential | COTA |
| Practice address |
1351 E BARDIN RD STE 160 Arlington, TX 76018 (817) 795-1291 |
| Mailing address |
5220 SPRING VALLEY RD STE 400 Dallas, TX 75254 |
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 | 7 | 9 | 4 | 7 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Doubled? | — | ×2 | — | ×2 | — | ×2 | — | ×2 | — | ×2 | — | ×2 | — | ×2 |
| Value | 8 | 0 | 8 | 8 | 0 | 2 | 0 | 0 | 3 | 1 | 7 | 9 | 4 | 5 |
Sum = 55 · next multiple of 10 = 60 · 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.