Mary Beth Elliott, LICSW
Mary Beth Elliott, LICSW is a provider specialising in Clinical Social Worker in Federal Way, WA, registered under NPI 1003225657.
Getting there
Here is what surrounds this office in Federal Way, based on OpenStreetMap data collected Sep 12, 2026. Parking is available about 0.21 mi away. The nearest transit stop is 1,018 ft away, served by 9th Ave S & S 336th St. A pharmacy sits 0.25 mi from the entrance (Key Compounding Pharmacy), which helps if you leave with a prescription. If you arrive early, there is a coffee shop 0.43 mi away.
Getting here and what is nearby
Transit S 336th St & 10th Pl S 663 ft ~3 min
Transit S 336th St & 9th Ave S 701 ft ~3 min
Parking 947 ft ~4 min
Transit 9th Ave S & S 336th St 1,018 ft ~4 min
Coffee DeBreaux's Cafe 1,009 ft ~4 min
Parking 987 ft ~4 min
Parking 0.21 mi ~5 min
Restaurant Joe's Deli 0.23 mi ~5 min
Pharmacy Key Compounding Pharmacy 0.25 mi ~6 min
Convenience Manila's Pride 0.32 mi ~7 min
Restaurant La Tapatia 0.34 mi ~7 min
Gas station CFN 0.38 mi ~8 min
Convenience Ernie's Truck Stop 0.40 mi ~9 min
33101 Pacific Highway South, Federal Way 98003
Gas station 76 0.41 mi ~9 min
Restaurant Pho Kim Vietnamese Cuisine 0.41 mi ~9 min
Coffee Cafe Spot Federal Way 0.42 mi ~9 min
Convenience My Goods Market 0.42 mi ~9 min
Gas station 76 0.42 mi ~9 min
Coffee Gravity Coffee Co. 0.43 mi ~9 min
33510 Pacific Highway South, Federal Way 98003
Hotel Stevenson Motel 0.44 mi ~9 min
33330 Pacific Highway South, Federal Way 98003
Hotel Eastwind Motel 0.44 mi ~9 min
Grocery Grocery Outlet 0.44 mi ~9 min
32945 Pacific Highway South, Federal Way 98003
Hotel Econo Lodge 0.48 mi ~10 min
1505 South 328th Street, Federal Way 98003
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 |
|---|---|---|
| LICSW117540 | MA | Clinical Social Worker |
| LW000005933 | WA | Clinical Social Worker primary |
Licences are recorded in 2 states: MA, WA. Providers licensed in several states often practise near a state border or deliver telehealth across state lines.
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.
Licensed in 2 states
This provider holds licences in 2 states: Massachusetts and Washington. The practice address on file is in Federal Way, WA, but a licence in another state usually means they see patients there too — either at a second location or by telehealth. If the address above is far from you, it is worth calling to ask whether they practise closer to where you live.
- Licence
- LW000005933
- Specialty
- Clinical Social Worker
Licence numbers are self-reported to NPPES at registration. They do not confirm a licence is currently active, in good standing, or valid for the specialty shown — only the state board can tell you that, which is why we link to each one.
What Clinical covers
A social worker who holds a master's or doctoral degree in social work from an accredited school of social work in addition to at least two years of post-master's supervised experience in a clinical setting. The social worker must be licensed, certified, or registered at the clinical level in the jurisdiction of practice. A clinical social worker provides direct services, including interventions focused on interpersonal interactions, intrapsychic dynamics, and life management issues. Clinical social work services are based on bio-psychosocial perspectives. Services consist of assessment, diagnosis, treatment (including psychotherapy and counseling), client-centered advocacy, consultation, evaluation, and prevention of mental illness, emotional, or behavioral disturbances. NUCC Health Care Provider Taxonomy, code 1041C0700X
All registered taxonomy codes
This provider registers 2 taxonomy codes. The primary code is what appears on most claims; the others record additional recognised specialties.
| Code | Specialty | Licence | State | |
|---|---|---|---|---|
| 1041C0700X | Clinical Social Worker Clinical | LICSW117540 | MA | |
| 1041C0700X | Clinical Social Worker Clinical | LW000005933 | WA | primary |
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 | 1003225657 valid check digit |
|---|---|
| Entity type | Individual (NPI-1) |
| Enumeration date | Aug 7, 2014 |
| Last updated | Feb 19, 2026 |
| Status | Active |
| Sole proprietor | No |
| Gender | Female |
| Credential | LICSW |
| Practice address |
33400 9TH AVE S STE 100 Federal Way, WA 98003 (206) 567-7267 |
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 | 2 | 5 | 6 | 5 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Doubled? | — | ×2 | — | ×2 | — | ×2 | — | ×2 | — | ×2 | — | ×2 | — | ×2 |
| Value | 8 | 0 | 8 | 8 | 0 | 2 | 0 | 0 | 3 | 4 | 2 | 1 | 6 | 1 |
Sum = 43 · next multiple of 10 = 50 · 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.