Ronald Derayunan, NP
Ronald Derayunan, NP is a Psychiatric/Mental Health Nurse Practitioner in Simi Valley, CA, registered under NPI 1972300762. NPPES records them as a sole proprietor, meaning the practice is not incorporated as a separate legal entity.
Getting there
The practice address on file is 1720 E LOS ANGELES AVE STE 231, Simi Valley, CA 93065. We have not yet mapped what surrounds this office — parking, transit, and nearby pharmacies are added as our data collection reaches each location.
Credentials and Medicare
| Licence | State | Specialty |
|---|---|---|
| 95034129 | CA | Psychiatric/Mental Health Nurse… primary |
This provider holds licence 95034129 issued in CA. A licence number in NPPES reflects what was filed at registration — it does not confirm the licence is still active today.
- Status
- Approved
- Provider type
- Practitioner - Nurse Practitioner
- PAC ID
- 6901253723
- Enrollment ID
- I20250523002348
Medicare enrolment is recorded as approved under the provider type Practitioner - Nurse Practitioner. Being enrolled means the provider can bill Medicare; it does not tell you whether they are currently accepting new Medicare patients. Call the office to confirm.
What Psychiatric/Mental Health covers
Definition to come... NUCC Health Care Provider Taxonomy, code 363LP0808X
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 | 1972300762 valid check digit |
|---|---|
| Entity type | Individual (NPI-1) |
| Enumeration date | Feb 27, 2025 |
| Last updated | Feb 27, 2025 |
| Status | Active |
| Sole proprietor | Yes |
| Credential | NP |
| Practice address |
1720 E LOS ANGELES AVE STE 231 Simi Valley, CA 93065 (310) 980-7475 |
| Mailing address |
2788 FYLER PL Los Angeles, CA 90065 |
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 | 9 | 7 | 2 | 3 | 0 | 0 | 7 | 6 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Doubled? | — | ×2 | — | ×2 | — | ×2 | — | ×2 | — | ×2 | — | ×2 | — | ×2 |
| Value | 8 | 0 | 8 | 8 | 0 | 2 | 9 | 5 | 2 | 6 | 0 | 0 | 7 | 3 |
Sum = 58 · next multiple of 10 = 60 · 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.