Kaiwen Tan, LICSW
Kaiwen Tan, LICSW is a provider specialising in Social Worker in Seattle, WA, registered under NPI 1003447541.
Getting there
Here is what surrounds this office in Seattle, based on OpenStreetMap data collected Sep 27, 2026. Parking is available about 399 ft away. The nearest transit stop is 894 ft away, served by Martin L King Jr Way S & S Andover St. If you arrive early, there is a coffee shop 0.43 mi away.
Getting here and what is nearby
Parking 140 ft ~1 min
Transit Martin L King Jr Way S & S Walden St 290 ft ~2 min
Parking 240 ft ~1 min
Parking 399 ft ~2 min
Transit Martin L King Jr Way S & S Walden St 584 ft ~3 min
Transit Martin L King Jr Way S & S Andover St 894 ft ~4 min
Convenience Columbia City Market 904 ft ~4 min
Grocery Mekong Rainier Supermarket 0.23 mi ~5 min
Restaurant Cafe Ibex 0.24 mi ~5 min
Restaurant Little Chengdu 0.28 mi ~6 min
Restaurant Wingstop 0.29 mi ~6 min
3208 Rainier Avenue South, Seattle 98144
Mo-Su 10:00-01:00
Gas station Safeway Fuel Station 0.36 mi ~8 min
Coffee Compadre Coffee 0.42 mi ~9 min
2931 Rainier Avenue South, Seattle 98144
Coffee Starbucks 0.43 mi ~9 min
3820 Rainier Avenue South, Seattle 98118
Mo-Su 09:00-21:00
Grocery Safeway 0.45 mi ~9 min
3820 Rainier Avenue South, Seattle 98118
Mo-Fr 05:00-23:00; Sa-Su 05:00-23:00
Convenience ampm 0.50 mi ~11 min
Gas station Arco 0.50 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 |
|---|---|---|
| LW61640460 | WA | Social Worker primary |
This provider holds licence LW61640460 issued in WA. 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 Social Worker covers
A social worker is a person who is qualified by a Social Work degree, and licensed, certified or registered by the state as a social worker to practice within the scope of that license. A social worker provides assistance and counseling to clients and their families who are dealing with social, emotional and environmental problems. Social work services may be rendered to individuals, families, groups, and the public. NUCC Health Care Provider Taxonomy, code 104100000X
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 | 1003447541 valid check digit |
|---|---|
| Entity type | Individual (NPI-1) |
| Enumeration date | Feb 3, 2020 |
| Last updated | Dec 30, 2025 |
| Status | Active |
| Sole proprietor | No |
| Gender | Female |
| Credential | LICSW |
| Practice address |
3639 MARTIN LUTHER KING JR WAY S Seattle, WA 98144 (206) 695-7600 Fax (206) 695-7606 |
| Other identifiers |
2150309
· Medicaid (WA) |
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 | 4 | 7 | 5 | 4 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Doubled? | — | ×2 | — | ×2 | — | ×2 | — | ×2 | — | ×2 | — | ×2 | — | ×2 |
| Value | 8 | 0 | 8 | 8 | 0 | 2 | 0 | 0 | 3 | 8 | 4 | 5 | 5 | 8 |
Sum = 59 · next multiple of 10 = 60 · check digit = 1 · actual last digit = 1
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.