Mark Palo, D.D.S.,M.S.
Mark Palo, D.D.S.,M.S. is a provider specialising in Endodontics in Oak Brook, IL, registered under NPI 1003148891.
Getting there
Here is what surrounds this office in Oak Brook, based on OpenStreetMap data collected Sep 8, 2026. Parking is available about 408 ft away at Yellow Parking Deck. There is EV charging 412 ft from the office — useful if you are driving in from out of town. The nearest transit stop is 446 ft away, served by 1401 22nd Street. If you arrive early, there is a coffee shop 802 ft away.
Getting here and what is nearby
Parking 158 ft ~1 min
Parking 185 ft ~1 min
Transit Oakbrook Center 403 ft ~2 min
Transit Oakbrook Center 421 ft ~2 min
Transit 1401 22nd Street 446 ft ~2 min
EV charging 412 ft ~2 min
Parking Yellow Parking Deck 408 ft ~2 min
Coffee Starbucks 671 ft ~3 min
1 Oakbrook Center Drive, Oak Brook 60523
Restaurant Piccolo Buco by Cooper's Hawk 751 ft ~3 min
1818 Oakbrook Center Drive, Oak Brook 60523
Mo-Th 11:00-21:00; Fr-Su 11:00-22:00
Coffee Starbucks 802 ft ~4 min
Hotel Chicago Marriott Oak Brook 830 ft ~4 min
1401 West 22nd Street, Oak Brook 60523
Restaurant Maggiano's Little Italy 0.26 mi ~6 min
Restaurant Smashburger 0.34 mi ~7 min
1755 West 22nd Street, Oak Brook 60523
Hotel Le Méridien Chicago - Oakbrook Center 0.36 mi ~8 min
Gas station Costco Gasoline 0.44 mi ~9 min
Hotel DoubleTree Chicago Oak Brook 0.55 mi ~11 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 |
|---|---|---|
| 019024403 | IL | Endodontics primary |
This provider holds licence 019024403 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 Endodontics covers
The branch of dentistry that is concerned with the morphology, physiology and pathology of the human dental pulp and periradicular tissues. Its study and practice encompass the basic and clinical sciences including biology of the normal pulp, the etiology, diagnosis, prevention and treatment of diseases and injuries of the pulp and associated periradicular conditions. NUCC Health Care Provider Taxonomy, code 1223E0200X
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 | 1003148891 valid check digit |
|---|---|
| Entity type | Individual (NPI-1) |
| Enumeration date | Feb 4, 2010 |
| Last updated | Feb 4, 2010 |
| Status | Active |
| Sole proprietor | No |
| Gender | Male |
| Credential | D.D.S.,M.S. |
| Practice address |
120 OAKBROOK CTR #714 Oak Brook, IL 60523 (630) 654-3331 Fax (630) 954-2910 |
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 | 1 | 4 | 8 | 8 | 9 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Doubled? | — | ×2 | — | ×2 | — | ×2 | — | ×2 | — | ×2 | — | ×2 | — | ×2 |
| Value | 8 | 0 | 8 | 8 | 0 | 2 | 0 | 0 | 3 | 2 | 4 | 7 | 8 | 9 |
Sum = 59 · next multiple of 10 = 60 · 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.