Katherine Stanfill, PHD
Katherine Stanfill, PHD is a Clinical Psychologist in Seattle, WA, registered under NPI 1003251406.
Getting there
Here is what surrounds this office in Seattle, based on OpenStreetMap data collected Sep 14, 2026. Parking is available about 536 ft away. The nearest transit stop is 629 ft away, served by Westlake Avenue North & Galer Street. If you arrive early, there is a coffee shop 0.32 mi away.
Getting here and what is nearby
Parking 180 ft ~1 min
Parking 245 ft ~1 min
Transit Westlake Avenue North & 8th Avenue North 371 ft ~2 min
Transit Westlake Avenue North & 8th Avenue North 396 ft ~2 min
Coffee Boathouse Deli 374 ft ~2 min
1818 Westlake Avenue North, Seattle 98109
Parking 536 ft ~3 min
Transit Westlake Avenue North & Galer Street 629 ft ~3 min
Restaurant Mother India Cuisine 622 ft ~3 min
Coffee Tea King 710 ft ~3 min
Restaurant Lake Union Eats 832 ft ~4 min
1601 Dexter Avenue North, Seattle 98109
Convenience Metropolitan 919 ft ~4 min
Mo-Fr 07:00-22:00; Sa 08:30-22:00; Su 08:30-20:00
Convenience Westlake Deli & Grocery 0.29 mi ~6 min
2132 Westlake Avenue North, Seattle 98109
Mo-Fr 07:00-21:00, Sa 08:00-18:00, Su 09:00-18:00
Coffee Caffè Umbria 0.32 mi ~7 min
1201 Westlake Avenue North, Seattle 98109
07:00-17:00
Restaurant Gyro & More 0.33 mi ~7 min
1205 Dexter Avenue North, Seattle 98109
Mo-Sa 11:00-21:00
Hotel Courtyard Marriott Seattle Downtown/Lake Union 0.47 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
| Licence | State | Specialty |
|---|---|---|
| PY60312491 | WA | Clinical Psychologist primary |
This provider holds licence PY60312491 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 Clinical covers
A psychologist who provides continuing and comprehensive mental and behavioral health care for individuals and families; consultation to agencies and communities; training, education and supervision; and research-based practice. It is a specialty in breadth -- one that is broadly inclusive of severe psychopathology -- and marked by comprehensiveness and integration of knowledge and skill from a broad array of disciplines within and outside of psychology proper. The scope of clinical psychology encompasses all ages, multiple diversities and varied systems. NUCC Health Care Provider Taxonomy, code 103TC0700X
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 | 1003251406 valid check digit |
|---|---|
| Entity type | Individual (NPI-1) |
| Enumeration date | Apr 30, 2013 |
| Last updated | Jun 19, 2019 |
| Status | Active |
| Sole proprietor | No |
| Gender | Female |
| Credential | PHD |
| Practice address |
1700 WESTLAKE AVE N STE 416 Seattle, WA 98109 (206) 973-7262 |
| Mailing address |
4742 42ND AVE SW # 282 Seattle, WA 98116 |
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 | 5 | 1 | 4 | 0 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Doubled? | — | ×2 | — | ×2 | — | ×2 | — | ×2 | — | ×2 | — | ×2 | — | ×2 |
| Value | 8 | 0 | 8 | 8 | 0 | 2 | 0 | 0 | 3 | 4 | 5 | 2 | 4 | 0 |
Sum = 44 · next multiple of 10 = 50 · check digit = 6 · actual last digit = 6
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.