Diana Trichilo, PH.D., ABPDN
Diana Trichilo, PH.D., ABPDN is a provider specialising in Clinical Neuropsychologist in Sebastopol, CA, registered under NPI 1003149279. This provider registers 2 separate taxonomy codes, which usually means they practise across more than one recognised specialty. 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 Sebastopol, based on OpenStreetMap data collected Sep 8, 2026. Parking is available about 550 ft away. There is EV charging 0.40 mi from the office (ChargePoint) — useful if you are driving in from out of town. The nearest transit stop is 440 ft away, served by Keating Ave & Pitt Ave. A pharmacy sits 0.20 mi from the entrance (Rite Aid), which helps if you leave with a prescription. If you arrive early, there is a coffee shop 0.30 mi away.
Getting here and what is nearby
Transit Healdsburg Ave & N Main St 189 ft ~1 min
Parking 210 ft ~1 min
Parking 237 ft ~1 min
Grocery Safeway 290 ft ~2 min
Transit Healdsburg Ave & N Main St (Safeway) 309 ft ~2 min
Coffee Starbucks 316 ft ~2 min
Transit Keating Ave & Pitt Ave 440 ft ~2 min
Restaurant The Nectary Juice Bar 406 ft ~2 min
6760 McKinley Street, Sebastopol
Parking 550 ft ~3 min
Restaurant Khom Loi 712 ft ~3 min
7385 Healdsburg Avenue, Sebastopol
Restaurant O & C China Bistro 868 ft ~4 min
7501 Healdsburg Avenue, Sebastopol
Pharmacy Rite Aid 0.20 mi ~5 min
Coffee Gypsy Café 0.21 mi ~5 min
Grocery Whole Foods Market 0.23 mi ~5 min
6910 McKinley Street, Sebastopol 95472
Mo-Su 08:00-21:00
Convenience Home Body Refill 0.25 mi ~5 min
144 Weeks Way
Mo-Tu off; We-Sa 11:00-17:00; Su 10:00-14:00
EV charging ChargePoint 0.26 mi ~6 min
Coffee The Porch 0.30 mi ~7 min
EV charging ChargePoint 0.35 mi ~8 min
EV charging ChargePoint 0.40 mi ~9 min
Grocery Sebastopol Community Market 0.45 mi ~9 min
6762 #100 Sebastopol Avenue, 95472
Mo-Su 08:00-21:30
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 |
|---|---|---|
| PSY 16784 | CA | Psychologist |
| PSY 16784 | CA | Clinical Neuropsychologist primary |
This provider holds licence PSY 16784 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 Clinical Neuropsychologist covers
A clinical psychologist who applies principles of assessment and intervention based upon the scientific study of human behavior as it relates to normal and abnormal functioning of the central nervous system. The specialty is dedicated to enhancing the understanding of brain-behavior relationships and the application of such knowledge to human problems. NUCC Health Care Provider Taxonomy, code 103G00000X
All registered taxonomy codes
This provider registers 2 taxonomy codes. The primary code is what appears on most claims; the others record additional recognised specialties.
| Code | Specialty | Licence | State | |
|---|---|---|---|---|
| 103T00000X | Psychologist | PSY 16784 | CA | |
| 103G00000X | Clinical Neuropsychologist | PSY 16784 | CA | primary |
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 | 1003149279 valid check digit |
|---|---|
| Entity type | Individual (NPI-1) |
| Enumeration date | Sep 4, 2009 |
| Last updated | Mar 6, 2017 |
| Status | Active |
| Sole proprietor | Yes |
| Gender | Female |
| Credential | PH.D., ABPDN |
| Practice address |
450 PITT AVE SUITE 3 Sebastopol, CA 95472 (707) 824-1130 |
| Mailing address |
PO BOX 2795 Sebastopol, CA 95473 |
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 | 1 | 4 | 9 | 2 | 7 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Doubled? | — | ×2 | — | ×2 | — | ×2 | — | ×2 | — | ×2 | — | ×2 | — | ×2 |
| Value | 8 | 0 | 8 | 8 | 0 | 2 | 0 | 0 | 3 | 2 | 4 | 9 | 2 | 5 |
Sum = 51 · next multiple of 10 = 60 · check digit = 9 · actual last digit = 9
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.