LAUREN NGHIA TANG, O.D. INC
LAUREN NGHIA TANG, O.D. INC is an organization registered with the National Plan and Provider Enumeration System (NPPES) under NPI 1003104035, based in Riverside, CA. It is classified under Optometrist.
Getting there
Here is what surrounds this office in Riverside, based on OpenStreetMap data collected Sep 5, 2026. Parking is available about 0.50 mi away at GALERIA. There is EV charging 0.38 mi from the office — useful if you are driving in from out of town. The nearest transit stop is 624 ft away. A pharmacy sits 0.37 mi from the entrance (CVS Pharmacy), which helps if you leave with a prescription. If you arrive early, there is a coffee shop 0.36 mi away.
Getting here and what is nearby
Transit 219 ft ~1 min
Parking 397 ft ~2 min
Parking 435 ft ~2 min
Transit 555 ft ~3 min
Grocery Aldi 589 ft ~3 min
3750 Tyler Street, Riverside 92503-4161
Mo, We, Fr-Su 09:00-21:00; Tu, Th 08:30-21:00
Transit 624 ft ~3 min
Grocery Northgate Market 695 ft ~3 min
Coffee Starbucks 789 ft ~3 min
Hotel Days Inn by Wyndham Riverside Tyler Mall 786 ft ~3 min
Gas station Sinclair 0.20 mi ~4 min
Restaurant OK Tofu House 0.20 mi ~5 min
Restaurant Wendy's 0.22 mi ~5 min
Restaurant Jimmy John's 0.24 mi ~5 min
EV charging 0.28 mi ~6 min
Convenience Speedway 0.31 mi ~7 min
Gas station Speedway 0.32 mi ~7 min
EV charging 0.35 mi ~8 min
Coffee Starbucks 0.36 mi ~8 min
Coffee Toi Moi 0.36 mi ~8 min
Pharmacy CVS Pharmacy 0.37 mi ~8 min
EV charging 0.38 mi ~8 min
Grocery Smart & Final 0.45 mi ~10 min
Parking GALERIA 0.50 mi ~10 min
1299 GALERIA @ TYLER
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 |
|---|---|---|
| 12624T | CA | Optometrist primary |
This provider holds licence 12624T 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 Optometrist covers
Doctors of optometry (ODs) are the primary health care professionals for the eye. Optometrists examine, diagnose, treat, and manage diseases, injuries, and disorders of the visual system, the eye, and associated structures as well as identify related systemic conditions affecting the eye. An optometrist has completed pre-professional undergraduate education in a college or university and four years of professional education at a college of optometry, leading to the doctor of optometry (O.D.) degree. Some optometrists complete an optional residency in a specific area of practice. Optometrists are eye health care professionals state-licensed to diagnose and treat diseases and disorders of the eye and visual system. NUCC Health Care Provider Taxonomy, code 152W00000X
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 | 1003104035 valid check digit |
|---|---|
| Entity type | Organization (NPI-2) |
| Enumeration date | Jul 12, 2011 |
| Last updated | Jul 12, 2011 |
| Status | Active |
| Practice address |
10440 MAGNOLIA AVE Riverside, CA 92505 (951) 353-2020 Fax (951) 637-1858 |
| Mailing address |
848 SAN DIEGO LN Placentia, CA 92870 |
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 | 4 | 0 | 3 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Doubled? | — | ×2 | — | ×2 | — | ×2 | — | ×2 | — | ×2 | — | ×2 | — | ×2 |
| Value | 8 | 0 | 8 | 8 | 0 | 2 | 0 | 0 | 3 | 2 | 0 | 8 | 0 | 6 |
Sum = 45 · next multiple of 10 = 50 · check digit = 5 · actual last digit = 5
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.