Ly Ly Choy
Ly Ly Choy is a Pharmacist in Walnut Creek, CA, registered under NPI 1003340498.
Getting there
Here is what surrounds this office in Walnut Creek, based on OpenStreetMap data collected Sep 19, 2026. Parking is available about 913 ft away. There is EV charging 0.26 mi from the office (Walnut Creek Supercharger) — useful if you are driving in from out of town. The nearest transit stop is 790 ft away, served by Mitchell Drive & Oak Grove Road. A pharmacy sits 0.37 mi from the entrance (Walgreens), which helps if you leave with a prescription. If you arrive early, there is a coffee shop 0.33 mi away.
Getting here and what is nearby
Transit Shadelands Drive & North Via Monte 286 ft ~2 min
Parking 528 ft ~3 min
Transit Oak Grove Road & Shadelands Drive 704 ft ~3 min
Transit Mitchell Drive & Oak Grove Road 790 ft ~3 min
Parking 862 ft ~4 min
Parking 913 ft ~4 min
Grocery Safeway 996 ft ~4 min
Coffee Ice Monster 0.23 mi ~5 min
Restaurant Tanoshi Japanese Bistro 0.23 mi ~5 min
Restaurant MOD Pizza 0.24 mi ~5 min
2353 Oak Grove Road, Walnut Creek 94598
Mo-We 10:30-22:00; Th-Sa 10:30-23:00; Su 10:30-22:00
Restaurant Panda Express 0.24 mi ~5 min
2280 Oak Grove Road, Walnut Creek 94598
Mo-Fr 09:30-21:00; Sa-Su 10:00-21:00
EV charging Walnut Creek Supercharger 0.26 mi ~6 min
Coffee Micki's Mocha 0.33 mi ~7 min
Gas station Valero 0.33 mi ~7 min
Grocery Whole Foods Market 0.35 mi ~8 min
2941 Ygnacio Valley Road, Walnut Creek 94598
Mo-Su 08:00-21:00
Pharmacy Walgreens 0.37 mi ~8 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 |
|---|---|---|
| 46248 | CA | Pharmacist primary |
This provider holds licence 46248 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 Pharmacist covers
An individual licensed by the appropriate state regulatory agency to engage in the practice of pharmacy. The practice of pharmacy includes, but is not limited to, assessment, interpretation, evaluation, and implementation, initiation, monitoring or modification of medication and or medical orders; the compounding or dispensing of medication and or medical orders; participation in drug and device procurement, storage, and selection; drug administration; drug regimen reviews; drug or drug-related research; provision of patient education and the provision of those acts or services necessary to provide medication therapy management services in all areas of patient care. NUCC Health Care Provider Taxonomy, code 183500000X
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 | 1003340498 valid check digit |
|---|---|
| Entity type | Individual (NPI-1) |
| Enumeration date | Apr 12, 2017 |
| Last updated | Apr 12, 2017 |
| Status | Active |
| Sole proprietor | No |
| Gender | Female |
| Practice address |
2880 SHADELANDS DR STE 201 Walnut Creek, CA 94598 (925) 979-6832 |
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 | 4 | 0 | 4 | 9 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Doubled? | — | ×2 | — | ×2 | — | ×2 | — | ×2 | — | ×2 | — | ×2 | — | ×2 |
| Value | 8 | 0 | 8 | 8 | 0 | 2 | 0 | 0 | 3 | 6 | 4 | 0 | 4 | 9 |
Sum = 52 · next multiple of 10 = 60 · check digit = 8 · actual last digit = 8
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.