Sarah Dahlgren-dawson
Sarah Dahlgren-dawson is a Pharmacy Technician in Castro Valley, CA, registered under NPI 1003549957. 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 Castro Valley, based on OpenStreetMap data collected Oct 5, 2026. Parking is available about 0.39 mi away at Castro Valley Park And Ride. The nearest transit stop is 0.33 mi away, served by Center Street & Ravenwood Place. A pharmacy sits 0.49 mi from the entrance (Walgreens), which helps if you leave with a prescription. If you arrive early, there is a coffee shop 0.39 mi away.
Getting here and what is nearby
Grocery Meimei Market 140 ft ~1 min
Parking 196 ft ~1 min
Parking 204 ft ~1 min
Restaurant HL Peninsula Restaurant Castro Valley 259 ft ~1 min
3868 Castro Valley Boulevard, Castro Valley 94546
Mo-Fr 10:30-14:30,17:00-21:30; Sa-Su 10:00-14:15,17:00-21:30
Restaurant BLVD Burger 808 ft ~4 min
3714 Castro Valley Boulevard
Transit 867 ft ~4 min
Pharmacy CVS Pharmacy 988 ft ~4 min
Restaurant KFC 0.21 mi ~5 min
Coffee iTea 0.29 mi ~6 min
20666 Redwood Road
Gas station 76 0.29 mi ~6 min
Transit Redwood Road & Castro Valley Boulevard 0.32 mi ~7 min
Transit Center Street & Ravenwood Place 0.33 mi ~7 min
Gas station Chevron 0.34 mi ~7 min
Coffee Quickly 0.36 mi ~8 min
20893 Redwood Road, Castro Valley 94546
Mo-Th 11:00-21:00; Fr-Su 11:00-24:00
Coffee Peet's Coffee 0.39 mi ~8 min
20439 Redwood Rd, Castro Valley 94546
Mo-Fr 05:00-19:00; Sa-Su 05:30-19:00
Parking Castro Valley Park And Ride 0.39 mi ~8 min
E Of Center St @ I-580, Castro Valley 94546
Gas station 76 0.41 mi ~9 min
3020 Grove Way
Grocery Safeway 0.41 mi ~9 min
Grocery Lucky 0.43 mi ~9 min
3443 Castro Valley Boulevard
Convenience ampm 0.44 mi ~9 min
Pharmacy Walgreens 0.49 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 |
|---|---|---|
| 113340 | CA | Pharmacy Technician primary |
This provider holds licence 113340 issued in CA. 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 Pharmacy Technician covers
A person who works under the direct supervision of a licensed pharmacist and performs many pharmacy-related functions that do not require the professional judgment of a pharmacist. NUCC Health Care Provider Taxonomy, code 183700000X
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 | 1003549957 valid check digit |
|---|---|
| Entity type | Individual (NPI-1) |
| Enumeration date | Jul 7, 2022 |
| Last updated | Jul 7, 2022 |
| Status | Active |
| Sole proprietor | Yes |
| Gender | Female |
| Practice address |
3848 CASTRO VALLEY BLVD Castro Valley, CA 94546 (510) 886-3341 Fax (510) 883-4896 |
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 | 5 | 4 | 9 | 9 | 5 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Doubled? | — | ×2 | — | ×2 | — | ×2 | — | ×2 | — | ×2 | — | ×2 | — | ×2 |
| Value | 8 | 0 | 8 | 8 | 0 | 2 | 0 | 0 | 3 | 1 | 4 | 9 | 9 | 1 |
Sum = 53 · next multiple of 10 = 60 · 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.