Jay Perko, DDS
Jay Perko, DDS is a provider specialising in Orthodontics and Dentofacial Orthopedics Dentistry in Visalia, CA, registered under NPI 1003012501. 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 Visalia, based on OpenStreetMap data collected Aug 29, 2026. Parking is available about 990 ft away. The nearest transit stop is 0.20 mi away, served by Marriott Hotel. A pharmacy sits 0.28 mi from the entrance (Kaweah Health Pharmacy), which helps if you leave with a prescription. If you arrive early, there is a coffee shop 0.34 mi away.
Getting here and what is nearby
Transit Noble & Court 622 ft ~3 min
Transit Court & Mrytle 726 ft ~3 min
Parking 750 ft ~3 min
Gas station Chevron 792 ft ~4 min
Parking 849 ft ~4 min
Hotel Visalia Marriott at the Convention Center 973 ft ~4 min
300 South Court Street, Visalia 93291
Gas station 76 1,000 ft ~4 min
Parking 990 ft ~4 min
Transit Marriott Hotel 0.20 mi ~4 min
Restaurant Quiznos 0.24 mi ~5 min
Hotel Comfort Suites 0.25 mi ~6 min
Restaurant Los Culichis Sushi and Bar 0.27 mi ~6 min
Pharmacy Kaweah Health Pharmacy 0.28 mi ~6 min
Coffee Mission Coffee 0.34 mi ~7 min
Restaurant Cafe India Cuisine Visalia 0.36 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 |
|---|---|---|
| CA24047 | CA | Orthodontics and Dentofacial Orthopedics… primary |
This provider holds licence CA24047 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 Orthodontics and Dentofacial Orthopedics covers
That area of dentistry concerned with the supervision, guidance and correction of the growing or mature dentofacial structures, including those conditions that require movement of teeth or correction of malrelationships and malformations of their related structures and the adjustment of relationships between and among teeth and facial bones by the application of forces and/or the stimulation and redirection of functional forces within the craniofacial complex. Major responsibilities of orthodontic practice include the diagnosis, prevention, interception and treatment of all forms of malocclusion of the teeth and associated alterations in their surrounding structures; the design, application and control of functional and corrective appliances; and the guidance of the dentition and its supporting structures to attain and maintain optimum occlusal relations in physiologic and esthetic harmony among facial and cranial structures. NUCC Health Care Provider Taxonomy, code 1223X0400X
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 | 1003012501 valid check digit |
|---|---|
| Entity type | Individual (NPI-1) |
| Enumeration date | Jun 22, 2007 |
| Last updated | Jul 8, 2007 |
| Status | Active |
| Sole proprietor | Yes |
| Gender | Male |
| Credential | DDS |
| Practice address |
426 S GARDEN ST Visalia, CA 93277 (559) 732-5658 Fax (559) 732-1958 |
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 | 1 | 2 | 5 | 0 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Doubled? | — | ×2 | — | ×2 | — | ×2 | — | ×2 | — | ×2 | — | ×2 | — | ×2 |
| Value | 8 | 0 | 8 | 8 | 0 | 2 | 0 | 0 | 3 | 0 | 1 | 4 | 5 | 0 |
Sum = 39 · next multiple of 10 = 40 · check digit = 1 · actual last digit = 1
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.