Sandra Serna
Sandra Serna is a School Counselor in Riverdale, CA, registered under NPI 1003476078.
Getting there
Here is what surrounds this office in Riverdale, based on OpenStreetMap data collected Sep 29, 2026. No dedicated parking is recorded within walking distance, so allow extra time to find street parking. The nearest transit stop is 0.26 mi away, served by Riverdale (Bank of the West).
Getting here and what is nearby
Transit Riverdale (Bank of the West) 0.26 mi ~6 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 |
|---|---|---|
| 230129508 | CA | School Counselor primary |
This provider holds licence 230129508 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 School covers
Definition to come... NUCC Health Care Provider Taxonomy, code 101YS0200X
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 | 1003476078 valid check digit |
|---|---|
| Entity type | Individual (NPI-1) |
| Enumeration date | Jun 20, 2019 |
| Last updated | Mar 12, 2026 |
| Status | Active |
| Sole proprietor | No |
| Gender | Female |
| Practice address |
3160 W MOUNT WHITNEY AVE Riverdale, CA 93656 (559) 891-4323 |
| Mailing address |
1111 VAN NESS AVE Fresno, CA 93721 |
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 | 4 | 7 | 6 | 0 | 7 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Doubled? | — | ×2 | — | ×2 | — | ×2 | — | ×2 | — | ×2 | — | ×2 | — | ×2 |
| Value | 8 | 0 | 8 | 8 | 0 | 2 | 0 | 0 | 3 | 8 | 7 | 3 | 0 | 5 |
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.