DCP OF ILLINOIS - CRYSTAL LAKE
DCP OF ILLINOIS - CRYSTAL LAKE is an organization registered with the National Plan and Provider Enumeration System (NPPES) under NPI 1003089251, based in Crystal Lake, IL. It is classified under General Practice Dentistry.
Getting there
Here is what surrounds this office in Crystal Lake, based on OpenStreetMap data collected Sep 4, 2026. Parking is available about 0.21 mi away. A pharmacy sits 725 ft from the entrance (Walgreens), which helps if you leave with a prescription.
Getting here and what is nearby
Pharmacy Walgreens 725 ft ~3 min
315 North State Route 31, Crystal Lake
Parking 771 ft ~3 min
Restaurant Wendy's 918 ft ~4 min
Parking 1,017 ft ~4 min
Parking 0.21 mi ~5 min
Restaurant Burger King 0.28 mi ~6 min
Restaurant McDonald's 0.29 mi ~6 min
230 North Route 31, Crystal Lake 60014
04:30-22:00
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 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-2 identifies an organization — a clinic, hospital, group practice, laboratory, or supplier. Individual clinicians working there hold their own NPI-1 numbers separately, so a bill may reference both.
| NPI | 1003089251 valid check digit |
|---|---|
| Entity type | Organization (NPI-2) |
| Enumeration date | Apr 9, 2008 |
| Last updated | Sep 20, 2022 |
| Status | Active |
| Practice address |
1145 SOUTH ROUTE 31 SIUTE J Crystal Lake, IL 60039 (815) 477-5399 Fax (815) 477-2593 |
| Mailing address |
5875 LANDERBROOK DR #250 Mayfield Heights, OH 44124 |
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 | 8 | 9 | 2 | 5 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Doubled? | — | ×2 | — | ×2 | — | ×2 | — | ×2 | — | ×2 | — | ×2 | — | ×2 |
| Value | 8 | 0 | 8 | 8 | 0 | 2 | 0 | 0 | 3 | 0 | 8 | 9 | 2 | 1 |
Sum = 49 · next multiple of 10 = 50 · 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.