Theresa Westfallen
Theresa Westfallen is a provider specialising in Orthodontics and Dentofacial Orthopedics Dentistry in Chicago, IL, registered under NPI 1003033770.
Getting there
Here is what surrounds this office in Chicago, based on OpenStreetMap data collected Aug 31, 2026. Parking is available about 826 ft away. There is EV charging 0.23 mi from the office — useful if you are driving in from out of town. The nearest transit stop is 398 ft away, served by North Ave & Paulina. A pharmacy sits 0.28 mi from the entrance (Walgreens), which helps if you leave with a prescription. If you arrive early, there is a coffee shop 0.23 mi away.
Getting here and what is nearby
Restaurant The Delta 138 ft ~1 min
Transit North Ave & Wood 199 ft ~1 min
Coffee Gallery Cafe 196 ft ~1 min
1760 West North Avenue, Chicago 60622
Mo-Sa 07:00-15:00; Su 08:00-15:00
Transit North Ave & Wood 294 ft ~2 min
Parking 367 ft ~2 min
Transit North Ave & Paulina 398 ft ~2 min
Parking 437 ft ~2 min
Restaurant Lucia’s Gourmet Italian Cuisine 537 ft ~3 min
Convenience Bucktown Market 662 ft ~3 min
1758 West Wabansia Avenue, Chicago 60622
Restaurant etta 687 ft ~3 min
1840 West North Avenue, Chicago 60622
Mo-Th 17:00-22:00; Fr 16:30-23:00; Sa-Su 10:00-14:00, 16:30-23:00
Parking 826 ft ~4 min
Coffee Uni Uni Bubble Tea 0.22 mi ~5 min
Coffee Sarima Cafe 0.23 mi ~5 min
EV charging 0.23 mi ~5 min
Hotel Hyatt Place Chicago / Wicker Park 0.23 mi ~5 min
Pharmacy Walgreens 0.28 mi ~6 min
Grocery Jewel-Osco 0.32 mi ~7 min
1341 North Paulina Street, Chicago 60622
Mo-Fr 06:00-24:00; Sa-Su 06:00-24:00
Convenience Olivia's Market 0.35 mi ~7 min
2014 West Wabansia Avenue, Chicago 60647
08:00-21:00
Convenience BP Shop 0.45 mi ~10 min
1600 North Elston Avenue, Chicago 60642
Gas station BP 0.46 mi ~10 min
1600 North Elston Avenue, Chicago 60642
Grocery Local Foods 0.49 mi ~10 min
1427 West Willow Street
Mo-Fr 10:00-20:00; Sa 09:00-18:00; Su 10:00-18:00
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 |
|---|---|---|
| 021001951 | IL | Orthodontics and Dentofacial Orthopedics… primary |
| 019024676 | IL | Orthodontics and Dentofacial Orthopedics… |
This provider holds licence 021001951 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 Orthodontics and Dentofacial Orthopedics covers
That area of dentistry concerned with the supervision, guidance and correction of the growing or mature dentofacial structures, including those conditions that require movement of teeth or correction of malrelationships and malformations of their related structures and the adjustment of relationships between and among teeth and facial bones by the application of forces and/or the stimulation and redirection of functional forces within the craniofacial complex. Major responsibilities of orthodontic practice include the diagnosis, prevention, interception and treatment of all forms of malocclusion of the teeth and associated alterations in their surrounding structures; the design, application and control of functional and corrective appliances; and the guidance of the dentition and its supporting structures to attain and maintain optimum occlusal relations in physiologic and esthetic harmony among facial and cranial structures. NUCC Health Care Provider Taxonomy, code 1223X0400X
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 | |
|---|---|---|---|---|
| 1223X0400X | Orthodontics and Dentofacial Orthopedics Dentistry Orthodontics and Dentofacial Orthopedics | 021001951 | IL | primary |
| 1223X0400X | Orthodontics and Dentofacial Orthopedics Dentistry Orthodontics and Dentofacial Orthopedics | 019024676 | IL |
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 | 1003033770 valid check digit |
|---|---|
| Entity type | Individual (NPI-1) |
| Enumeration date | Apr 20, 2007 |
| Last updated | Jul 8, 2007 |
| Status | Active |
| Sole proprietor | No |
| Gender | Female |
| Practice address |
1738 W NORTH AVE Chicago, IL 60622 (773) 276-5566 Fax (773) 276-8780 |
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 | 3 | 3 | 7 | 7 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Doubled? | — | ×2 | — | ×2 | — | ×2 | — | ×2 | — | ×2 | — | ×2 | — | ×2 |
| Value | 8 | 0 | 8 | 8 | 0 | 2 | 0 | 0 | 3 | 0 | 3 | 6 | 7 | 5 |
Sum = 50 · next multiple of 10 = 50 · check digit = 0 · actual last digit = 0
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.