Holly Bayless Da Costa
Holly Bayless Da Costa is a Behavior Technician in Tacoma, WA, registered under NPI 1003474339.
Getting there
Here is what surrounds this office in Tacoma, based on OpenStreetMap data collected Sep 29, 2026. Parking is available about 953 ft away. There is EV charging 0.49 mi from the office — useful if you are driving in from out of town. The nearest transit stop is 676 ft away, served by Pacific Avenue & South Division Lane. A pharmacy sits 0.31 mi from the entrance (Walgreens), which helps if you leave with a prescription.
Getting here and what is nearby
Transit 537 ft ~3 min
Transit 620 ft ~3 min
Transit Pacific Avenue & South Division Lane 676 ft ~3 min
Parking 875 ft ~4 min
Parking 965 ft ~4 min
3580 Pacific Avenue, Tacoma
Parking 953 ft ~4 min
Restaurant Stanley & Seafort's 1,017 ft ~4 min
Restaurant Subway 0.30 mi ~7 min
Pharmacy Walgreens 0.31 mi ~7 min
3737 Pacific Avenue, Tacoma 98418
Restaurant TeriyakiWok 0.31 mi ~7 min
101 S 38th Street, Tacoma 98418
Gas station Shell 0.33 mi ~7 min
EV charging 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 | 1003474339 valid check digit |
|---|---|
| Entity type | Individual (NPI-1) |
| Enumeration date | Jun 2, 2019 |
| Last updated | Jun 2, 2019 |
| Status | Active |
| Sole proprietor | No |
| Gender | Female |
| Practice address |
3562 A ST Tacoma, WA 98418 (253) 376-4636 |
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 | 4 | 7 | 4 | 3 | 3 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Doubled? | — | ×2 | — | ×2 | — | ×2 | — | ×2 | — | ×2 | — | ×2 | — | ×2 |
| Value | 8 | 0 | 8 | 8 | 0 | 2 | 0 | 0 | 3 | 8 | 7 | 8 | 3 | 6 |
Sum = 61 · next multiple of 10 = 70 · check digit = 9 · actual last digit = 9
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.