Crystal Alvarez
Crystal Alvarez is a School Registered Nurse in Nogales, AZ, registered under NPI 1003285438.
Getting there
Here is what surrounds this office in Nogales, based on OpenStreetMap data collected Sep 16, 2026. Parking is available about 990 ft away. The nearest transit stop is 0.34 mi away, served by Nogales (E).
Getting here and what is nearby
Parking 706 ft ~3 min
Parking 901 ft ~4 min
Parking 990 ft ~4 min
Restaurant Rancho Grande Mexican Restaurant 0.23 mi ~5 min
270 North Grand Court Plaza, Nogales
Convenience Circle K 0.25 mi ~5 min
Grocery Food City 0.26 mi ~6 min
Grocery Northern Valley Produce 0.31 mi ~7 min
Restaurant McDonald's 0.33 mi ~7 min
252 West Crawford Street, Nogales 85621-3208
24/7
Grocery Via Brokerage 0.33 mi ~7 min
Transit Nogales (E) 0.34 mi ~7 min
Gas station Shell 0.34 mi ~7 min
Restaurant Church's Chicken 0.42 mi ~9 min
546 North Grand Avenue, Nogales 85621
10:00-22:00
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 |
|---|---|---|
| RN180878 | AZ | School Registered Nurse primary |
This provider holds licence RN180878 issued in AZ. 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 School covers
Definition to come... NUCC Health Care Provider Taxonomy, code 163WS0200X
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 | 1003285438 valid check digit |
|---|---|
| Entity type | Individual (NPI-1) |
| Enumeration date | Sep 16, 2015 |
| Last updated | Sep 16, 2015 |
| Status | Active |
| Sole proprietor | No |
| Gender | Female |
| Practice address |
351 W PLUM ST Nogales, AZ 85621 (520) 287-0800 Fax (520) 287-0819 |
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 | 2 | 8 | 5 | 4 | 3 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Doubled? | — | ×2 | — | ×2 | — | ×2 | — | ×2 | — | ×2 | — | ×2 | — | ×2 |
| Value | 8 | 0 | 8 | 8 | 0 | 2 | 0 | 0 | 3 | 4 | 8 | 1 | 4 | 6 |
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.