Cassidy Mayer, BSN, RN
Cassidy Mayer, BSN, RN is a Psychiatric/Mental Health Registered Nurse in Chula Vista, CA, registered under NPI 1003751512.
Getting there
Here is what surrounds this office in Chula Vista, based on OpenStreetMap data collected Oct 22, 2026. Parking is available about 477 ft away. The nearest transit stop is 761 ft away. If you arrive early, there is a coffee shop 0.43 mi away.
Getting here and what is nearby
Parking 146 ft ~1 min
Transit 222 ft ~1 min
Parking 325 ft ~2 min
Parking 477 ft ~2 min
Transit 565 ft ~3 min
Transit 761 ft ~3 min
Restaurant Famers Table 0.23 mi ~5 min
330 F Street, Chula Vista 91910
Coffee TG Cafe 0.24 mi ~5 min
Restaurant Kalaveras 0.24 mi ~5 min
Restaurant Teriyaki Grill 0.26 mi ~6 min
Convenience 7-Eleven 0.30 mi ~7 min
Grocery Garden Farms Market 0.38 mi ~8 min
370 E Street, Chula Vista 91910
Coffee Mujer Divina Burrito and Coffee House 0.43 mi ~9 min
218 3rd Avenue, 91910
Coffee Divina Matcha 0.43 mi ~9 min
216 3rd Avenue, 91910
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 |
|---|---|---|
| 95288683 | CA | Psychiatric/Mental Health Registered Nurse primary |
This provider holds licence 95288683 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 Psychiatric/Mental Health covers
Definition to come... NUCC Health Care Provider Taxonomy, code 163WP0808X
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 | 1003751512 valid check digit |
|---|---|
| Entity type | Individual (NPI-1) |
| Enumeration date | Apr 21, 2026 |
| Last updated | Apr 21, 2026 |
| Status | Active |
| Sole proprietor | No |
| Gender | Female |
| Credential | BSN, RN |
| Practice address |
318 4TH AVE Chula Vista, CA 91910 (619) 420-3620 |
| Mailing address |
15728 CAMINITO ATICO San Diego, CA 92128 |
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 | 7 | 5 | 1 | 5 | 1 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Doubled? | — | ×2 | — | ×2 | — | ×2 | — | ×2 | — | ×2 | — | ×2 | — | ×2 |
| Value | 8 | 0 | 8 | 8 | 0 | 2 | 0 | 0 | 3 | 5 | 5 | 2 | 5 | 2 |
Sum = 48 · next multiple of 10 = 50 · 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.