Helen Williams, PTA
Helen Williams, PTA is a Physical Therapy Assistant in Tukwila, WA, registered under NPI 1003219957. 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 Tukwila, based on OpenStreetMap data collected Sep 12, 2026. Parking is available about 0.47 mi away at Extra Car Parking. The nearest transit stop is 0.24 mi away, served by Tukwila International Boulevard Station - Bay 1. A pharmacy sits 0.44 mi from the entrance (Safeway), which helps if you leave with a prescription. If you arrive early, there is a coffee shop 0.41 mi away.
Getting here and what is nearby
Parking ShuttlePark 2 524 ft ~2 min
Transit Tukwila International Boulevard Station - Bay 3 0.20 mi ~4 min
Transit Tukwila International Boulevard Station - Bay 2 0.21 mi ~5 min
Parking Tukwila International Boulevard Station Parking 0.22 mi ~5 min
Transit Tukwila International Boulevard Station - Bay 1 0.24 mi ~5 min
Hotel Super 8 by Wyndham SeaTac Airport 0.24 mi ~5 min
Gas station Alliance Auto Gas 0.29 mi ~6 min
15838 International Boulevard, Tukwila 98188
Convenience ampm 0.30 mi ~7 min
Gas station Arco 0.30 mi ~7 min
Restaurant McDonald's 0.34 mi ~7 min
15210 International Boulevard, Tukwila 98188
07:00-20:00
Convenience La Barata Tienda 0.35 mi ~7 min
16256 Military Road South, Seatac 98188
Convenience Seatac Market & Smoke Shop 0.35 mi ~7 min
16256 Military Road South, Seatac 98188
Restaurant Teriyaki & Wok 0.35 mi ~7 min
16256 Military Road South, Seatac 98188
Restaurant Urban Tapri 0.36 mi ~8 min
09:00-02:00
Coffee Community Cup 0.38 mi ~8 min
16260 Military Road South, Seatac 98188
Gas station Chevron 0.39 mi ~8 min
Coffee Jasper's Coffee 0.40 mi ~8 min
4020 South 164th Street, Seatac 98188
Coffee Star Coffee 0.41 mi ~9 min
16005 International Boulevard, Seatac 98188
Pharmacy Safeway 0.44 mi ~9 min
Mo-Fr 09:00-21:00; Sa,Su 10:00-18:00
Grocery Safeway 0.45 mi ~9 min
4011 South 164th Street, Seattle 98188
Mo-Su 05:00-01:00
Parking Extra Car Parking 0.47 mi ~10 min
16300 International Boulevard, Seatac 98188
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 |
|---|---|---|
| 07420 | OR | Physical Therapy Assistant primary |
This provider holds licence 07420 issued in OR. 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 Physical Therapy Assistant covers
(1)Physical therapist assistants are skilled health care providers who are graduates of a physical therapist assistant associate degree program accredited by an agency recognized by the Secretary of the U.S. Department of Education or Council on Postsecondary Accreditation, who assists the physical therapist in providing physical therapy. The supervising physical therapist is directly responsible for the actions of the physical therapist assistant. The PTA performs physical therapy procedures and related tasks that have been selected and delegated by the supervising physical therapist. Duties of the PTA include assisting the physical therapist in implementing treatment programs, training patients in exercised and activities of daily living, conducting treatments, and reporting to the physical therapist on the patient's responses. In addition to direct patient care, the PTA may also perform such functions as patient transport, and clinic or equipment preparation and maintenance. Currently more than half of all states require PTAs to be licensed, registered or certified. (2) An individual who works under the supervision of a physical therapist to assist him or her in providing physical therapy services. A physical therapy assistant may, for instance, help patients follow an appropriate exercise program that will increase their strength, endurance, coordination, and range of motion and train patients to perform activities of daily life. NUCC Health Care Provider Taxonomy, code 225200000X
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 | 1003219957 valid check digit |
|---|---|
| Entity type | Individual (NPI-1) |
| Enumeration date | Oct 7, 2014 |
| Last updated | Oct 7, 2014 |
| Status | Active |
| Sole proprietor | Yes |
| Gender | Female |
| Credential | PTA |
| Practice address |
3810 S 158TH ST Tukwila, WA 98188 (206) 715-2865 |
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 | 2 | 1 | 9 | 9 | 5 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Doubled? | — | ×2 | — | ×2 | — | ×2 | — | ×2 | — | ×2 | — | ×2 | — | ×2 |
| Value | 8 | 0 | 8 | 8 | 0 | 2 | 0 | 0 | 3 | 4 | 1 | 9 | 9 | 1 |
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.