Ernesto Estor, MD
Ernesto Estor, MD is a Family Medicine Physician in Chicago, IL, registered under NPI 1003028143. NPPES records them as a sole proprietor, meaning the practice is not incorporated as a separate legal entity.
Getting there
Here is what surrounds this office in Chicago, based on OpenStreetMap data collected Aug 31, 2026. Parking is available about 226 ft away. The nearest transit stop is 403 ft away, served by Peterson & Central Park. If you arrive early, there is a coffee shop 0.38 mi away.
Getting here and what is nearby
Parking 140 ft ~1 min
Parking 168 ft ~1 min
Transit Peterson & St. Louis 186 ft ~1 min
Parking 226 ft ~1 min
Transit Peterson & St. Louis 319 ft ~2 min
Transit Peterson & Central Park 403 ft ~2 min
Restaurant Martino’s Italian Cuisine & Pizzeria 522 ft ~2 min
Restaurant Dunkin' 801 ft ~4 min
Restaurant KFC 950 ft ~4 min
Hotel Rio Motel 0.35 mi ~8 min
6155 North Jersey Avenue, Chicago 60659
Hotel North Park Inn 0.36 mi ~8 min
6250 North Lincoln Avenue
Hotel River Park Motel & Suites 0.36 mi ~8 min
6060 North Lincoln Avenue, Chicago 60659
Coffee Starbucks 0.38 mi ~8 min
Convenience 7-Eleven 0.49 mi ~10 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 |
|---|---|---|
| 036120810 | IL | Family Medicine Physician primary |
| 51956-020 | WI | Family Medicine Physician |
Licences are recorded in 2 states: IL, WI. Providers licensed in several states often practise near a state border or deliver telehealth across state lines.
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.
Licensed in 2 states
This provider holds licences in 2 states: Illinois and Wisconsin. The practice address on file is in Chicago, IL, but a licence in another state usually means they see patients there too — either at a second location or by telehealth. If the address above is far from you, it is worth calling to ask whether they practise closer to where you live.
- Licence
- 036120810
- Specialty
- Family Medicine Physician
Licence numbers are self-reported to NPPES at registration. They do not confirm a licence is currently active, in good standing, or valid for the specialty shown — only the state board can tell you that, which is why we link to each one.
What Family Medicine covers
Family Medicine is the medical specialty which is concerned with the total health care of the individual and the family. It is the specialty in breadth which integrates the biological, clinical, and behavioral sciences. The scope of family medicine is not limited by age, sex, organ system, or disease entity. NUCC Health Care Provider Taxonomy, code 207Q00000X
All registered taxonomy codes
This provider registers 2 taxonomy codes. The primary code is what appears on most claims; the others record additional recognised specialties.
| Code | Specialty | Licence | State | |
|---|---|---|---|---|
| 207Q00000X | Family Medicine Physician | 036120810 | IL | primary |
| 207Q00000X | Family Medicine Physician | 51956-020 | WI |
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 | 1003028143 valid check digit |
|---|---|
| Entity type | Individual (NPI-1) |
| Enumeration date | May 3, 2007 |
| Last updated | Aug 27, 2012 |
| Status | Active |
| Sole proprietor | Yes |
| Gender | Male |
| Credential | MD |
| Practice address |
3525 W PETERSON AVE SUITE 210 Chicago, IL 60659 (773) 293-6671 Fax (773) 961-8102 |
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 | 8 | 1 | 4 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Doubled? | — | ×2 | — | ×2 | — | ×2 | — | ×2 | — | ×2 | — | ×2 | — | ×2 |
| Value | 8 | 0 | 8 | 8 | 0 | 2 | 0 | 0 | 3 | 0 | 2 | 7 | 1 | 8 |
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.