Junichi Shimaoka
Junichi Shimaoka is a Clinical Psychologist in San Mateo, CA, registered under NPI 1003267329. 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 San Mateo, based on OpenStreetMap data collected Sep 15, 2026. Parking is available about 830 ft away at Urgent Care Parking Lot. There is EV charging 473 ft from the office (EVgo) — useful if you are driving in from out of town. The nearest transit stop is 380 ft away, served by San Mateo Drive & 2nd Avenue. A pharmacy sits 650 ft from the entrance (Walgreens), which helps if you leave with a prescription. If you arrive early, there is a coffee shop 330 ft away.
Getting here and what is nearby
Parking 127 ft ~1 min
Parking 163 ft ~1 min
Coffee Yifang 239 ft ~1 min
110 South B Street
Restaurant No. 5 House 241 ft ~1 min
5 South Ellsworth Avenue, San Mateo
Restaurant Kajiken 245 ft ~1 min
Restaurant Jeffrey's Hamburgers 249 ft ~1 min
Transit San Mateo Drive & 2nd Avenue 312 ft ~2 min
Coffee Urban Ritual 291 ft ~2 min
140 South B Street
Coffee Philz Coffee 330 ft ~2 min
113 South B Street, San Mateo 94401
Su-Th 06:00-20:00; Fr-Sa 06:00-20:30
Transit 1st Avenue & B Street 375 ft ~2 min
Transit San Mateo Drive & 2nd Avenue 380 ft ~2 min
EV charging 463 ft ~2 min
EV charging EVgo 467 ft ~2 min
EV charging EVgo 473 ft ~2 min
Pharmacy Walgreens 650 ft ~3 min
193 East 3rd Avenue
Mo-Fr 08:00-21:00; Sa 09:00-18:00; Su 10:00-18:00
Parking Urgent Care Parking Lot 830 ft ~4 min
100 South San Mateo Drive, San Mateo 94401
Grocery Mi Rancho Supermarket 856 ft ~4 min
Grocery Suruki Super Market 0.21 mi ~5 min
71 East 4th Avenue, 94401
Mo-Sa 10:00-19:00; Su 10:30-18:00
Gas station Shell 0.26 mi ~6 min
Grocery Dean's Produce 0.26 mi ~6 min
Convenience Food Mart 0.27 mi ~6 min
Convenience 7-Eleven 0.29 mi ~6 min
Gas station 76 gas station 0.31 mi ~7 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 |
|---|---|---|
| 29143 | CA | Clinical Psychologist primary |
This provider holds licence 29143 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 covers
A psychologist who provides continuing and comprehensive mental and behavioral health care for individuals and families; consultation to agencies and communities; training, education and supervision; and research-based practice. It is a specialty in breadth -- one that is broadly inclusive of severe psychopathology -- and marked by comprehensiveness and integration of knowledge and skill from a broad array of disciplines within and outside of psychology proper. The scope of clinical psychology encompasses all ages, multiple diversities and varied systems. NUCC Health Care Provider Taxonomy, code 103TC0700X
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 | 1003267329 valid check digit |
|---|---|
| Entity type | Individual (NPI-1) |
| Enumeration date | Jun 28, 2016 |
| Last updated | Apr 9, 2025 |
| Status | Active |
| Sole proprietor | Yes |
| Gender | Male |
| Practice address |
100 S ELLSWORTH AVE STE 802 San Mateo, CA 94401 (650) 667-7193 |
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 | 2 | 6 | 7 | 3 | 2 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Doubled? | — | ×2 | — | ×2 | — | ×2 | — | ×2 | — | ×2 | — | ×2 | — | ×2 |
| Value | 8 | 0 | 8 | 8 | 0 | 2 | 0 | 0 | 3 | 4 | 6 | 5 | 3 | 4 |
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.