Valeria Gass
Valeria Gass is a provider specialising in Behavior Analyst in Naperville, IL, registered under NPI 1003423393.
Getting there
Here is what surrounds this office in Naperville, based on OpenStreetMap data collected Sep 25, 2026. Parking is available about 0.23 mi away. The nearest transit stop is 0.45 mi away, served by Washington & 5th Avenue. If you arrive early, there is a coffee shop 0.44 mi away.
Getting here and what is nearby
Parking 611 ft ~3 min
Parking 627 ft ~3 min
Restaurant Rosati's 1,012 ft ~4 min
Parking 0.23 mi ~5 min
Restaurant Hugo's Frog Bar & Fish House 0.31 mi ~7 min
55 South Main Street, Naperville 60540
Mo-Th, Su 11:00-21:00; Fr-Sa 11:00-22:00
Restaurant Q BBQ 0.34 mi ~7 min
103 South Main Street, Naperville 60540
Mo-Su 11:00-20:00
Transit Washington & Benton 0.38 mi ~8 min
Transit Washington & Benton 0.39 mi ~8 min
Coffee Starbucks 0.40 mi ~8 min
203 South Main Street, Naperville 60540
Mo-Th, Su 06:00-22:00; Fr-Sa 06:00-23:00
Coffee Elite Boba 0.43 mi ~9 min
26 West Jefferson Avenue, Naperville 60540
Coffee Bistro du Bouchard 0.44 mi ~9 min
Transit Washington & 5th Avenue 0.45 mi ~9 min
Hotel Hotel Indigo 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
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 Analyst covers
A behavior analyst is qualified by at least a master's degree and Behavior Analyst Certification Board certification and/or a state-issued credential (such as a license) to practice behavior analysis independently. Behavior analysts provide the required supervision to assistant behavior analysts and behavior technicians. A behavior analyst delivers services consistent with the dimensions of applied behavior analysis. Common services may include, but are not limited to, conducting behavioral assessments, analyzing data, writing and revising behavior-analytic treatment plans, training others to implement components of treatment plans, and overseeing implementation of treatment plans. NUCC Health Care Provider Taxonomy, code 103K00000X
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 | 1003423393 valid check digit |
|---|---|
| Entity type | Individual (NPI-1) |
| Enumeration date | Sep 30, 2020 |
| Last updated | May 9, 2024 |
| Status | Active |
| Sole proprietor | No |
| Gender | Female |
| Practice address |
1979 N MILL ST STE 204 Naperville, IL 60563 (920) 819-9041 |
| Mailing address |
2714 LAWRENCE AVE Lockport, IL 60441 |
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 | 2 | 3 | 3 | 9 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Doubled? | — | ×2 | — | ×2 | — | ×2 | — | ×2 | — | ×2 | — | ×2 | — | ×2 |
| Value | 8 | 0 | 8 | 8 | 0 | 2 | 0 | 0 | 3 | 8 | 2 | 6 | 3 | 9 |
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.