John Casper, DMD
John Casper, DMD is a provider specialising in General Practice Dentistry in Anna, IL, registered under NPI 1003023383.
Getting there
Here is what surrounds this office in Anna, based on OpenStreetMap data collected Aug 30, 2026. Parking is available about 0.28 mi away.
Getting here and what is nearby
Parking 573 ft ~3 min
Restaurant DQ Grill & Chill 659 ft ~3 min
Parking 0.27 mi ~6 min
Convenience Casey's General Store 0.28 mi ~6 min
Parking 0.28 mi ~6 min
Gas station Casey's General Store 0.29 mi ~6 min
Hotel Davie School Inn 0.29 mi ~6 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 |
|---|---|---|
| 01915800 | IL | General Practice Dentistry primary |
This provider holds licence 01915800 issued in IL. 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 General Practice covers
A general dentist is the primary dental care provider for patients of all ages. The general dentist is responsible for the diagnosis, treatment, management and overall coordination of services related to patients' oral health needs. NUCC Health Care Provider Taxonomy, code 1223G0001X
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 | 1003023383 valid check digit |
|---|---|
| Entity type | Individual (NPI-1) |
| Enumeration date | May 17, 2007 |
| Last updated | Jul 8, 2007 |
| Status | Active |
| Sole proprietor | No |
| Gender | Male |
| Credential | DMD |
| Practice address |
205 N MAIN ST Anna, IL 62906 (618) 833-2314 |
| Mailing address |
PO BOX 489 205 N MAIN ST Anna, IL 62906 |
| Other names |
John Casper Other Name |
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 | 2 | 3 | 3 | 8 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Doubled? | — | ×2 | — | ×2 | — | ×2 | — | ×2 | — | ×2 | — | ×2 | — | ×2 |
| Value | 8 | 0 | 8 | 8 | 0 | 2 | 0 | 0 | 3 | 0 | 2 | 6 | 3 | 7 |
Sum = 47 · next multiple of 10 = 50 · 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.