Gian Tamisin
Gian Tamisin is a Behavior Technician in Pleasanton, CA, registered under NPI 1003464199.
Getting there
Here is what surrounds this office in Pleasanton, based on OpenStreetMap data collected Sep 28, 2026. Parking is available about 0.35 mi away. There is EV charging 0.47 mi from the office (ChargePoint) — useful if you are driving in from out of town. The nearest transit stop is 0.39 mi away, served by West Dublin/Pleasanton BART South Side. If you arrive early, there is a coffee shop 1,007 ft away.
Getting here and what is nearby
Parking 292 ft ~2 min
Restaurant California Pizza Kitchen 953 ft ~4 min
Mo-Th 11:00-21:30;Fr-Sa 11:00-22:00;Su 11:00-21:00
Restaurant The Cheesecake Factory 965 ft ~4 min
1350 Stoneridge Mall Road, Pleasanton 94588
Mo-Th 11:00-23:00;Fr-Sa 11:00-24:00;Su 10:00-23:00
Transit Stoneridge Mall 999 ft ~4 min
Coffee Starbucks 1,007 ft ~4 min
1140 Stoneridge Mall Road, Pleasanton 94588
Mo 05:30-22:00;Tu-Fr 05:30-23:00;Sa-Su 06:00-22:00
Hotel Pleasanton Marriott 0.20 mi ~5 min
Restaurant P.F. Chang's 0.20 mi ~4 min
1330 Stoneridge Mall Road
Su-Th 11:00-23:00;Fr-Sa 11:00-24:00
Transit Sheraton Pleasanton Hotel 0.26 mi ~6 min
EV charging eVgo 0.28 mi ~6 min
Hotel Residence Inn Pleasanton 0.28 mi ~6 min
Parking 0.29 mi ~6 min
5938 Stoneridge Mall Road
Hotel AC Hotel by Marriott Pleasanton 0.33 mi ~7 min
Parking 0.35 mi ~7 min
1204;1700 Stoneridge Mall Road
Transit West Dublin/Pleasanton BART South Side 0.39 mi ~8 min
EV charging ChargePoint 0.42 mi ~9 min
6160 Stoneridge Mall Road, Pleasanton 94588
EV charging ChargePoint 0.47 mi ~10 min
6150 Stoneridge Mall Road, Pleasanton 94588
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 | 1003464199 valid check digit |
|---|---|
| Entity type | Individual (NPI-1) |
| Enumeration date | Aug 31, 2019 |
| Last updated | Aug 31, 2019 |
| Status | Active |
| Sole proprietor | No |
| Gender | Male |
| Practice address |
5820 STONERIDGE MALL RD STE 205 Pleasanton, CA 94588 (877) 418-2978 |
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 | 4 | 6 | 4 | 1 | 9 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Doubled? | — | ×2 | — | ×2 | — | ×2 | — | ×2 | — | ×2 | — | ×2 | — | ×2 |
| Value | 8 | 0 | 8 | 8 | 0 | 2 | 0 | 0 | 3 | 8 | 6 | 8 | 1 | 9 |
Sum = 61 · next multiple of 10 = 70 · 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.