Diane Oakes, M.A. MFT
Diane Oakes, M.A. MFT is a Mental Health Counselor in Vista, CA, registered under NPI 1003090044. NPPES records them as a sole proprietor, meaning the practice is not incorporated as a separate legal entity.
Getting there
Here is what surrounds this office in Vista, based on OpenStreetMap data collected Sep 3, 2026. Parking is available about 0.47 mi away. The nearest transit stop is 0.25 mi away.
Getting here and what is nearby
Convenience 7-Eleven 897 ft ~4 min
Transit 980 ft ~4 min
Transit 0.20 mi ~4 min
Restaurant Jack in the Box 0.23 mi ~5 min
Transit 0.25 mi ~6 min
Restaurant New Panda Buffet 0.33 mi ~7 min
Restaurant Little Caesars 0.33 mi ~7 min
Parking 0.45 mi ~10 min
Parking 0.45 mi ~10 min
Parking 0.47 mi ~10 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 |
|---|---|---|
| MFC#32990 | CA | Mental Health Counselor primary |
This provider holds licence MFC#32990 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 Mental Health covers
Definition to come... NUCC Health Care Provider Taxonomy, code 101YM0800X
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 | 1003090044 valid check digit |
|---|---|
| Entity type | Individual (NPI-1) |
| Enumeration date | Dec 27, 2007 |
| Last updated | Dec 27, 2007 |
| Status | Active |
| Sole proprietor | Yes |
| Gender | Female |
| Credential | M.A. MFT |
| Practice address |
973 VALE TERRACE DR SUITE #206 Vista, CA 92084 (760) 526-6076 |
| Mailing address |
973 VALE TERRACE SUITE #206 Vista, CA 92084 |
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 | 9 | 0 | 0 | 4 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Doubled? | — | ×2 | — | ×2 | — | ×2 | — | ×2 | — | ×2 | — | ×2 | — | ×2 |
| Value | 8 | 0 | 8 | 8 | 0 | 2 | 0 | 0 | 3 | 0 | 9 | 0 | 0 | 8 |
Sum = 46 · next multiple of 10 = 50 · check digit = 4 · actual last digit = 4
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.