Giovanny Guerrero Diaz
Giovanny Guerrero Diaz is a Behavior Technician in Fremont, CA, registered under NPI 1003565714.
Getting there
Here is what surrounds this office in Fremont, based on OpenStreetMap data collected Oct 6, 2026. Parking is available about 543 ft away. There is EV charging 0.35 mi from the office (Gateway) — useful if you are driving in from out of town. The nearest transit stop is 934 ft away, served by Walnut Avenue & Fremont Boulevard. A pharmacy sits 0.43 mi from the entrance (Ohlone Pharmacy Kaiser Fremont), which helps if you leave with a prescription. If you arrive early, there is a coffee shop 0.22 mi away.
Getting here and what is nearby
Parking 298 ft ~2 min
Parking 373 ft ~2 min
Parking 543 ft ~3 min
Restaurant SLIVER Pizzeria 566 ft ~3 min
3658 A Capitol Avenue, Fremont 94538
Mo 11:00-20:00; Tu-Th 11:00-21:30; Fr,Sa 11:00-22:00; Su 11:00-21:30
Restaurant Honest Indian Vegetarian Restaurant 588 ft ~3 min
Coffee Stardust Coffee House 615 ft ~3 min
Mo-Su 09:30-20:30
Coffee Pour Decisions Craft 644 ft ~3 min
Restaurant RĀW Superfood Café | Fremont 634 ft ~3 min
3768 D Capitol Avenue, Fremont 94538
Su-Th 10:00-20:00; Fr,Sa 10:00-20:30
EV charging ChargePoint 750 ft ~3 min
Transit Walnut Avenue & Liberty Street 876 ft ~4 min
Transit Fremont Boulevard & Beacon Avenue 881 ft ~4 min
Transit Walnut Avenue & Fremont Boulevard 934 ft ~4 min
Pharmacy Daysman Pharmacy 944 ft ~4 min
3760 Mowry Avenue, Fremont 94538
Mo-Fr 09:00-19:00
Grocery Rythu Bazaar 946 ft ~4 min
3185 Walnut Avenue, Fremont 94538
Grocery MEGA MART 0.20 mi ~5 min
3900 Mowry Avenue, Fremont 94538
Mo-Su 08:00-21:00
Grocery Smart & Final 0.21 mi ~5 min
Mo-Su 06:00-22:00
Coffee Starbucks 0.22 mi ~5 min
Convenience Kwik & Convenient Liquor Supermarket 0.24 mi ~5 min
Convenience Sunshine Mart 0.26 mi ~6 min
Fremont Boulevard, Fremont 94538
Convenience 7-Eleven 0.28 mi ~6 min
Gas station Hub Petroleum 0.29 mi ~6 min
Pharmacy CVS Pharmacy 0.30 mi ~7 min
EV charging Tesla Supercharger 0.31 mi ~7 min
EV charging Gateway 0.35 mi ~7 min
Pharmacy Ohlone Pharmacy Kaiser Fremont 0.43 mi ~9 min
Mo-Fr 09:00-17:30
Gas station Marathon 0.46 mi ~10 min
4190;4192 Mowry Avenue
Distances are straight‑line estimates — walking routes may be longer. Hours and phone numbers can change; call ahead to confirm.
Credentials and Medicare
NPPES does not list a state licence number for this record. That is not unusual — organizations and some provider types are not required to file one. Verify current licensure with the relevant state board before care.
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 Behavior Technician covers
The behavior technician is a paraprofessional who practices under the close, ongoing supervision of a behavior analyst or assistant behavior analyst certified by the Behavior Analyst Certification Board and/or credentialed by a state (such as through licensure). The behavior technician is primarily responsible for the implementation of components of behavior-analytic treatment plans developed by the supervisor. That may include collecting data on treatment targets and conducting certain types of behavioral assessments (e.g., stimulus preference assessments). The behavior technician does not design treatment or assessment plans or procedures but provides services as assigned by the supervisor responsible for his or her work. NUCC Health Care Provider Taxonomy, code 106S00000X
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 | 1003565714 valid check digit |
|---|---|
| Entity type | Individual (NPI-1) |
| Enumeration date | Mar 21, 2022 |
| Last updated | Mar 21, 2022 |
| Status | Active |
| Sole proprietor | No |
| Gender | Male |
| Practice address |
39201 STATE ST Fremont, CA 94538 (866) 206-2008 |
| Mailing address |
186 SMALLEY AVE Hayward, CA 94541 |
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 | 5 | 6 | 5 | 7 | 1 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Doubled? | — | ×2 | — | ×2 | — | ×2 | — | ×2 | — | ×2 | — | ×2 | — | ×2 |
| Value | 8 | 0 | 8 | 8 | 0 | 2 | 0 | 0 | 3 | 1 | 6 | 1 | 7 | 2 |
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.