RYAN WALKER DDS PLLC
RYAN WALKER DDS PLLC is an organization registered with the National Plan and Provider Enumeration System (NPPES) under NPI 1003211772, based in Sammamish, WA. It is classified under Pediatric Dentistry.
Getting there
Here is what surrounds this office in Sammamish, based on OpenStreetMap data collected Sep 11, 2026. Parking is available about 366 ft away. There is EV charging 0.28 mi from the office (Tesla Supercharger) — useful if you are driving in from out of town. The nearest transit stop is 946 ft away, served by 228th Ave NE & NE 8th St. A pharmacy sits 773 ft from the entrance (Bartell Drugs), which helps if you leave with a prescription. If you arrive early, there is a coffee shop 0.24 mi away.
Getting here and what is nearby
Parking 63 ft ~1 min
Coffee Starbucks 136 ft ~1 min
Parking 207 ft ~1 min
Restaurant DQ Grill & Chill 193 ft ~1 min
22911 Northeast 4th Street, Sammamish 98074-7236
Transit 228th Ave NE & NE 4th St 284 ft ~2 min
Parking 366 ft ~2 min
Restaurant Domino's 344 ft ~2 min
462 228th Avenue Northeast, Sammamish 98074
Mo-Th 10:00-24:00; Fr-Sa 10:00-01:00; Su 10:00-24:00
Transit 228th Ave NE & NE 4th St 446 ft ~2 min
Restaurant Taco Time 470 ft ~2 min
Grocery Trader Joe's 509 ft ~2 min
490 228th Avenue Northeast, Sammamish 98074
09:00-21:00
EV charging 609 ft ~3 min
Grocery Apna Bazar 684 ft ~3 min
Pharmacy Bartell Drugs 773 ft ~3 min
526 228th Avenue Northeast
Transit 228th Ave NE & NE 8th St 946 ft ~4 min
Grocery Safeway 0.21 mi ~5 min
630 228th Avenue Northeast, Sammamish 98074
05:00-01:00
Coffee Mercurys Coffee Co. 0.24 mi ~5 min
Gas station Shell 0.24 mi ~5 min
Gas station 76 0.26 mi ~6 min
630 228th Ave Northeast, 98074
EV charging Tesla Supercharger 0.28 mi ~6 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 |
|---|---|---|
| DE 60140259 | WA | Pediatric Dentistry primary |
This provider holds licence DE 60140259 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 Pediatric Dentistry covers
An age-defined specialty that provides both primary and comprehensive preventive and therapeutic oral health care for infants and children through adolescence, including those with special health care needs. NUCC Health Care Provider Taxonomy, code 1223P0221X
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-2 identifies an organization — a clinic, hospital, group practice, laboratory, or supplier. Individual clinicians working there hold their own NPI-1 numbers separately, so a bill may reference both.
| NPI | 1003211772 valid check digit |
|---|---|
| Entity type | Organization (NPI-2) |
| Enumeration date | Oct 23, 2014 |
| Last updated | Oct 23, 2014 |
| Status | Active |
| Practice address |
336 228TH AVE NE STE 301 Sammamish, WA 98074 (206) 999-5941 |
| Other names |
Sammamish Pediatric Dentistry Former Legal Name |
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 | 1 | 7 | 7 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Doubled? | — | ×2 | — | ×2 | — | ×2 | — | ×2 | — | ×2 | — | ×2 | — | ×2 |
| Value | 8 | 0 | 8 | 8 | 0 | 2 | 0 | 0 | 3 | 4 | 1 | 2 | 7 | 5 |
Sum = 48 · next multiple of 10 = 50 · check digit = 2 · actual last digit = 2
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.