Tam Vo, RPH
Tam Vo, RPH is a Pharmacist in Vista, CA, registered under NPI 1003100462. 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 Vista, based on OpenStreetMap data collected Sep 5, 2026. Parking is available about 0.51 mi away. There is EV charging 0.45 mi from the office — useful if you are driving in from out of town. The nearest transit stop is 0.47 mi away. A pharmacy sits 0.26 mi from the entrance (Walmart Pharmacy), which helps if you leave with a prescription. If you arrive early, there is a coffee shop 0.48 mi away.
Getting here and what is nearby
Coffee Starbucks 0.00 mi ~1 min
Gas station Shell 498 ft ~2 min
400 Sycamore Avenue, Vista 92083
Restaurant Panda Express 582 ft ~3 min
316 Sycamore Avenue, Vista 92083
Mo-Th 09:30-22:00; Fr-Sa 09:30-22:30; Su 09:30-22:00
Pharmacy Walgreens 792 ft ~3 min
Restaurant Carl's Jr. 792 ft ~4 min
Restaurant IHOP 806 ft ~4 min
632 Sycamore Avenue, Vista 92081
Hotel La Quinta Inn 858 ft ~4 min
Coffee Starbucks 903 ft ~4 min
Convenience ampm 0.20 mi ~5 min
Gas station Arco 0.20 mi ~5 min
625 Sycamore Avenue, Vista 92083
Grocery ALDI 0.24 mi ~5 min
1750 University Drive, Vista 92083-7772
Mo-Su 09:00-21:00
Grocery Trader Joe's 0.24 mi ~5 min
Mo-Su 09:00-09:00
Pharmacy Walmart Pharmacy 0.26 mi ~6 min
EV charging Tesla Supercharger 0.27 mi ~6 min
Grocery Walmart Supercenter 0.29 mi ~6 min
1800 University Drive, Vista 92083
Mo-Su 06:00-24:00
Transit 0.32 mi ~7 min
Gas station Mobil 0.37 mi ~8 min
710 Sycamore Avenue, Vista 92083
EV charging 0.45 mi ~10 min
Transit 0.47 mi ~10 min
Transit 0.47 mi ~10 min
Convenience Circle K 0.47 mi ~10 min
Coffee Starbucks 0.48 mi ~10 min
Parking 0.51 mi ~11 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 |
|---|---|---|
| RPH49974 | CA | Pharmacist primary |
This provider holds licence RPH49974 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 | 1003100462 valid check digit |
|---|---|
| Entity type | Individual (NPI-1) |
| Enumeration date | Jun 2, 2011 |
| Last updated | Jun 2, 2011 |
| Status | Active |
| Sole proprietor | Yes |
| Gender | Female |
| Credential | RPH |
| Practice address |
1751 UNIVERSITY DR T-1040 Vista, CA 92083 (760) 208-6000 Fax (760) 208-6000 |
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 | 1 | 0 | 0 | 4 | 6 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Doubled? | — | ×2 | — | ×2 | — | ×2 | — | ×2 | — | ×2 | — | ×2 | — | ×2 |
| Value | 8 | 0 | 8 | 8 | 0 | 2 | 0 | 0 | 3 | 2 | 0 | 0 | 4 | 3 |
Sum = 38 · next multiple of 10 = 40 · 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.