Christopher Gelaj
Christopher Gelaj is a Hearing Instrument Specialist in Delray Beach, FL, registered under NPI 1003674235.
Getting there
Here is what surrounds this office in Delray Beach, based on OpenStreetMap data collected Oct 13, 2026. Parking is available about 740 ft away. A pharmacy sits 790 ft from the entrance (Iras Discount Pharmacy), which helps if you leave with a prescription.
Getting here and what is nearby
Restaurant Wendy's 511 ft ~2 min
4950 Linton Boulevard, Delray Beach 33445
Su 01:00-02:00
Parking 634 ft ~3 min
Parking 674 ft ~3 min
Parking 740 ft ~3 min
Pharmacy Iras Discount Pharmacy 790 ft ~3 min
Gas station Linton Oaks Mart 832 ft ~4 min
Grocery ALDI 847 ft ~4 min
4801 Linton Boulevard, Delray Beach 33445-6503
Mo-Sa 09:00-21:00; Su 10:00-20:00
Restaurant Dunkin' Donuts 962 ft ~4 min
4801 Linton Boulevard, Delray Beach 33445
Mo-Sa 05:00-19:00; Su 06:00-19:00
Restaurant Domino's 0.20 mi ~4 min
4801 Linton Boulevard, Delray Beach 33445
Mo-Th 10:30-24:00; Fr-Sa 10:30-01:00; Su 10:30-24:00
Gas station Murphy's Gas Station 0.32 mi ~7 min
Grocery Walmart Supercenter 0.38 mi ~8 min
16205 South Military Trail, Delray Beach 33484
24/7
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 |
|---|---|---|
| AS5782 | FL | Hearing Instrument Specialist primary |
This provider holds licence AS5782 issued in FL. 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 Hearing Instrument Specialist covers
Individuals who test hearing for the selection, adaptation, fitting, adjusting, servicing, and sale of hearing aids. Hearing Instrument Specialist is a designation provided individuals who qualify by the National Hearing Aid Society NUCC Health Care Provider Taxonomy, code 237700000X
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 | 1003674235 valid check digit |
|---|---|
| Entity type | Individual (NPI-1) |
| Enumeration date | Mar 12, 2024 |
| Last updated | Mar 20, 2024 |
| Status | Active |
| Sole proprietor | No |
| Gender | Male |
| Practice address |
4900 LINTON BLVD STE 3 Delray Beach, FL 33445 (561) 507-4392 |
| Mailing address |
750 N COMMONS DR STE 200 Aurora, IL 60504 |
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 | 6 | 7 | 4 | 2 | 3 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Doubled? | — | ×2 | — | ×2 | — | ×2 | — | ×2 | — | ×2 | — | ×2 | — | ×2 |
| Value | 8 | 0 | 8 | 8 | 0 | 2 | 0 | 0 | 3 | 3 | 7 | 8 | 2 | 6 |
Sum = 55 · next multiple of 10 = 60 · check digit = 5 · actual last digit = 5
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.