Thomas Osterdahl, CDP
Thomas Osterdahl, CDP is an Addiction (Substance Use Disorder) Counselor in Edmonds, WA, registered under NPI 1003387580. 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 Edmonds, based on OpenStreetMap data collected Sep 23, 2026. Parking is available about 498 ft away. The nearest transit stop is 0.26 mi away, served by 76th Ave W & 244th St SW. A pharmacy sits 0.30 mi from the entrance (Costco Pharmacy), which helps if you leave with a prescription. If you arrive early, there is a coffee shop 0.45 mi away.
Getting here and what is nearby
Parking 48 ft ~1 min
Restaurant Panera Bread 150 ft ~1 min
7929 Lake Ballinger Way, Edmonds 98026
Mo-Sa 06:00-21:00; Su 07:00-20:00
Parking 398 ft ~2 min
Parking 498 ft ~2 min
Restaurant Scott's Bar & Grill 457 ft ~2 min
Restaurant Habit Burger & Grill 849 ft ~4 min
1253 North 205th Street, Shoreline 98133
Mo-Su 10:00-22:00
Coffee Starbucks 886 ft ~4 min
Convenience Food Mart 0.23 mi ~5 min
7601 Lake Ballinger Way, Edmonds 98026
Transit Hwy 99 & 244th St SW 0.24 mi ~5 min
Gas station Chevron 0.24 mi ~5 min
Transit 76th Ave W & 242th St SW 0.26 mi ~6 min
Transit 76th Ave W & 244th St SW 0.26 mi ~6 min
Gas station Costco Gasoline 0.29 mi ~6 min
1175 North 205th Street, Shoreline 98133
Mo-Fr 06:00-09:30,Sa-Su 07:00-07:00
Gas station 76 0.29 mi ~6 min
Hotel Econo Lodge Edmonds North Seattle 0.30 mi ~6 min
Pharmacy Costco Pharmacy 0.30 mi ~6 min
Mo-Fr 10:00-20:30; Sa 09:30-18:00; Su off
Coffee Kitanda 0.32 mi ~7 min
20121 Aurora Avenue North, Shoreline 98133
Mo-Sa 06:30-19:00; Su 08:00-18:00
Convenience Baro Grocery 0.34 mi ~7 min
Convenience Aurora Village Mart 0.38 mi ~8 min
20003 Aurora Avenue North, Shoreline 98133
Grocery Safeway 0.44 mi ~9 min
23632 Highway 99, Edmonds 98026
Mo-Fr 05:00-24:00; Sa 05:00-24:00; Su 05:00-24:00
Coffee Starbucks 0.45 mi ~9 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 |
|---|---|---|
| CP60725651 | WA | Addiction (Substance Use Disorder)… primary |
This provider holds licence CP60725651 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 Addiction (Substance Use Disorder) covers
Definition to come... NUCC Health Care Provider Taxonomy, code 101YA0400X
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 | 1003387580 valid check digit |
|---|---|
| Entity type | Individual (NPI-1) |
| Enumeration date | Dec 10, 2018 |
| Last updated | Dec 10, 2018 |
| Status | Active |
| Sole proprietor | Yes |
| Gender | Male |
| Credential | CDP |
| Practice address |
7935 LAKE BALLINGER WAY Edmonds, WA 98026 (425) 412-2973 Fax (425) 672-6022 |
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 | 3 | 8 | 7 | 5 | 8 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Doubled? | — | ×2 | — | ×2 | — | ×2 | — | ×2 | — | ×2 | — | ×2 | — | ×2 |
| Value | 8 | 0 | 8 | 8 | 0 | 2 | 0 | 0 | 3 | 6 | 8 | 5 | 5 | 7 |
Sum = 60 · next multiple of 10 = 60 · check digit = 0 · actual last digit = 0
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.