Joshua Essery, PSYD
Joshua Essery, PSYD is a Clinical Psychologist in San Antonio, TX, registered under NPI 1003071408.
Getting there
Here is what surrounds this office in San Antonio, based on OpenStreetMap data collected Sep 3, 2026. Parking is available about 0.27 mi away. The nearest transit stop is 0.49 mi away. A pharmacy sits 0.41 mi from the entrance (H-E-B Pharmacy), which helps if you leave with a prescription.
Getting here and what is nearby
Parking 551 ft ~3 min
Restaurant P. Terry's 886 ft ~4 min
Mo-Th 07:00-23:00; Fr 07:00-12:00; Sa 08:00-12:00; Su 08:00-23:00
Restaurant Taco Cabana 0.22 mi ~5 min
8510 Fredericksburg Road, San Antonio 78229
Parking 0.23 mi ~5 min
Restaurant Dry Dock 0.23 mi ~5 min
8522 Fredericksburg Road, San Antonio 78229
Parking 0.27 mi ~6 min
Pharmacy H-E-B Pharmacy 0.41 mi ~9 min
Convenience Circle K 0.48 mi ~10 min
Transit 0.49 mi ~10 min
Gas station Valero 0.49 mi ~10 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 |
|---|---|---|
| 34802 | TX | Clinical Psychologist primary |
This provider holds licence 34802 issued in TX. 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 | 1003071408 valid check digit |
|---|---|
| Entity type | Individual (NPI-1) |
| Enumeration date | Jul 24, 2008 |
| Last updated | Jan 3, 2020 |
| Status | Active |
| Sole proprietor | No |
| Gender | Male |
| Credential | PSYD |
| Practice address |
8535 TOM SLICK San Antonio, TX 78229 (210) 616-0300 |
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 | 0 | 7 | 1 | 4 | 0 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Doubled? | — | ×2 | — | ×2 | — | ×2 | — | ×2 | — | ×2 | — | ×2 | — | ×2 |
| Value | 8 | 0 | 8 | 8 | 0 | 2 | 0 | 0 | 3 | 0 | 7 | 2 | 4 | 0 |
Sum = 42 · next multiple of 10 = 50 · check digit = 8 · actual last digit = 8
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.