Rafael Larios, PAC
Rafael Larios, PAC is a Physician Assistant in Ontario, CA, registered under NPI 1003081415.
Getting there
Here is what surrounds this office in Ontario, based on OpenStreetMap data collected Sep 4, 2026. Parking is available about 0.22 mi away. There is EV charging 0.21 mi from the office (Ontario Supercharger) — useful if you are driving in from out of town. The nearest transit stop is 0.40 mi away, served by Holt @ Lemon Westbound Ns. If you arrive early, there is a coffee shop 0.28 mi away.
Getting here and what is nearby
Parking 139 ft ~1 min
Parking 166 ft ~1 min
Coffee Starbucks 331 ft ~2 min
Restaurant Gloria's Cocina Mexicana 553 ft ~3 min
Gas station Chevron 572 ft ~3 min
Gas station Arco 606 ft ~3 min
Convenience Chevron 615 ft ~3 min
Restaurant The Bucket Crabs & Crawfish 717 ft ~3 min
Convenience Giant Variety Store 938 ft ~4 min
Restaurant Pizza Hut 991 ft ~4 min
EV charging Ontario Supercharger 0.21 mi ~5 min
Convenience 7-Eleven 0.21 mi ~5 min
Parking 0.22 mi ~5 min
Mo-Su,PH 00:00+
Coffee Unique Cafe 0.23 mi ~5 min
Hotel American Inn 0.26 mi ~6 min
Coffee Page One Cafe 0.28 mi ~6 min
Transit Euclid @ Holt Northbound 0.34 mi ~7 min
Transit Euclid @ Holt Southbound 0.39 mi ~8 min
Transit Holt @ Lemon Westbound Ns 0.40 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 |
|---|---|---|
| PA3975 | CA | Physician Assistant primary |
This provider holds licence PA3975 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 Physician Assistant covers
A physician assistant is a person who has successfully completed an accredited education program for physician assistant, is licensed by the state and is practicing within the scope of that license. Physician assistants are formally trained to perform many of the routine, time-consuming tasks a physician can do. In some states, they may prescribe medications. They take medical histories, perform physical exams, order lab tests and x-rays, and give inoculations. Most states require that they work under the supervision of a physician. NUCC Health Care Provider Taxonomy, code 363A00000X
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 | 1003081415 valid check digit |
|---|---|
| Entity type | Individual (NPI-1) |
| Enumeration date | Apr 25, 2008 |
| Last updated | Apr 25, 2008 |
| Status | Active |
| Sole proprietor | No |
| Gender | Male |
| Credential | PAC |
| Practice address |
525 N LAUREL AVE Ontario, CA 91762 (909) 391-3616 |
| Mailing address |
456 VIA MIRAMONTE Montebello, CA 90640 |
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 | 0 | 8 | 1 | 4 | 1 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Doubled? | — | ×2 | — | ×2 | — | ×2 | — | ×2 | — | ×2 | — | ×2 | — | ×2 |
| Value | 8 | 0 | 8 | 8 | 0 | 2 | 0 | 0 | 3 | 0 | 8 | 2 | 4 | 2 |
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.