Sharon Humphrey, PSY.D.
Sharon Humphrey, PSY.D. is a Clinical Psychologist in San Mateo, CA, registered under NPI 1003369463. 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 21, 2026. Parking is available about 671 ft away. The nearest transit stop is 0.37 mi away, served by El Camino Real & 20th Avenue. A pharmacy sits 790 ft from the entrance (CVS Pharmacy), 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 282 ft ~2 min
Parking 481 ft ~2 min
Parking 671 ft ~3 min
Pharmacy CVS Pharmacy 790 ft ~3 min
Restaurant Esposto's Borel Deli 915 ft ~4 min
Restaurant Windy City Pizza and BBQ 1,001 ft ~4 min
Transit El Camino Real & 17th Avenue 0.20 mi ~5 min
Gas station 76 0.20 mi ~5 min
Restaurant All Spice 0.20 mi ~5 min
Coffee Starbucks 0.22 mi ~5 min
1701 South El Camino Real, San Mateo 94402-3025
Mo-Sa 4:45-20:30; Su 5:30-20:00
Transit El Camino Real & 17th Avenue 0.23 mi ~5 min
Grocery Safeway 0.29 mi ~6 min
Gas station Bob Reed's Service Station 0.33 mi ~7 min
1641 Palm Avenue, San Mateo 94402
Grocery Nijiya Market 0.34 mi ~7 min
1956 El Camino Real, San Mateo 94403
PH,Mo-Su 10:00-20:00
Transit El Camino Real & 20th Avenue 0.37 mi ~8 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 |
|---|---|---|
| PSY31563 | CA | Clinical Psychologist primary |
This provider holds licence PSY31563 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 | 1003369463 valid check digit |
|---|---|
| Entity type | Individual (NPI-1) |
| Enumeration date | Aug 2, 2016 |
| Last updated | May 4, 2021 |
| Status | Active |
| Sole proprietor | Yes |
| Gender | Female |
| Credential | PSY.D. |
| Practice address |
177 BOVET RD STE 300 San Mateo, CA 94402 (650) 627-1700 |
| Mailing address |
PO BOX 60803 Palo Alto, CA 94306 |
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 | 3 | 6 | 9 | 4 | 6 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Doubled? | — | ×2 | — | ×2 | — | ×2 | — | ×2 | — | ×2 | — | ×2 | — | ×2 |
| Value | 8 | 0 | 8 | 8 | 0 | 2 | 0 | 0 | 3 | 6 | 6 | 9 | 4 | 3 |
Sum = 57 · next multiple of 10 = 60 · check digit = 3 · actual last digit = 3
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.