Karen Ann Denkov, APN
Karen Ann Denkov, APN is a Family Nurse Practitioner in Oak Park, IL, registered under NPI 1003475294.
Getting there
Here is what surrounds this office in Oak Park, based on OpenStreetMap data collected Sep 13, 2026. Parking is available about 502 ft away. The nearest transit stop is 487 ft away, served by Austin & Ontario/Race. If you arrive early, there is a coffee shop 0.26 mi away.
Getting here and what is nearby
Restaurant Dunkin' 86 ft ~1 min
Parking West Suburban Hospital Parking Garage 278 ft ~2 min
Erie Court, Oak Park 60302
Parking 250 ft ~1 min
Transit Austin & Erie 301 ft ~2 min
Transit Austin & Erie 365 ft ~2 min
Transit Austin & Ontario/Race 487 ft ~2 min
Parking 502 ft ~2 min
Restaurant Church's Chicken 0.25 mi ~5 min
Coffee New Sound Cafe 0.26 mi ~6 min
Gas station BP 0.26 mi ~6 min
Chicago Avenue, Oak Park 60302
Convenience BP Shop 0.27 mi ~6 min
Chicago Avenue, Oak Park 60302
Restaurant The Daly Bagel 0.29 mi ~6 min
130 Chicago Avenue, Oak Park 60302
Tu-Su 06:30-14:00
Convenience 7-Eleven 0.37 mi ~8 min
Gas station BP 0.42 mi ~9 min
Grocery Pete's Market 0.42 mi ~9 min
Grocery Forty Acres Fresh Market 0.46 mi ~10 min
Convenience Citgo 0.48 mi ~10 min
333 Lake Street, Oak Park 60302
Gas station Citgo 0.48 mi ~10 min
333 Lake Street, Oak Park 60302
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 |
|---|---|---|
| 016818 | IL | Family Nurse Practitioner primary |
This provider holds licence 016818 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 Family covers
Definition to come... NUCC Health Care Provider Taxonomy, code 363LF0000X
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 | 1003475294 valid check digit |
|---|---|
| Entity type | Individual (NPI-1) |
| Enumeration date | Jun 11, 2019 |
| Last updated | Nov 27, 2023 |
| Status | Active |
| Sole proprietor | No |
| Gender | Female |
| Credential | APN |
| Practice address |
3 ERIE CT Oak Park, IL 60302 (708) 763-1476 |
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 | 7 | 5 | 2 | 9 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Doubled? | — | ×2 | — | ×2 | — | ×2 | — | ×2 | — | ×2 | — | ×2 | — | ×2 |
| Value | 8 | 0 | 8 | 8 | 0 | 2 | 0 | 0 | 3 | 8 | 7 | 1 | 2 | 9 |
Sum = 56 · next multiple of 10 = 60 · check digit = 4 · actual last digit = 4
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.