Loretta Armstrong, APRN
Loretta Armstrong, APRN is a Psychiatric/Mental Health Nurse Practitioner in Chicago, IL, registered under NPI 1003591017.
Getting there
Here is what surrounds this office in Chicago, based on OpenStreetMap data collected Oct 8, 2026. Parking is available about 0.23 mi away. The nearest transit stop is 0.23 mi away, served by Lincoln & Kedzie. A pharmacy sits 0.30 mi from the entrance (Walgreens), which helps if you leave with a prescription. If you arrive early, there is a coffee shop 0.24 mi away.
Getting here and what is nearby
Transit Devon & Albany 0.21 mi ~5 min
Transit Devon & Albany 0.22 mi ~5 min
Parking 0.22 mi ~5 min
Parking 0.22 mi ~5 min
Transit Lincoln & Kedzie 0.23 mi ~5 min
Parking 0.23 mi ~5 min
Restaurant Great Chicago Food & Beverage Company 0.23 mi ~5 min
3149 West Devon Avenue, Chicago 60659
Coffee Starbucks 0.24 mi ~5 min
Restaurant Hadramout Restaurant 0.24 mi ~5 min
3100 West Devon Avenue, Chicago 60659
Restaurant Culver's 0.24 mi ~5 min
6012 North Albany Avenue, Chicago 60659
Mo-Su 10:00-22:00
Hotel River Park Motel & Suites 0.26 mi ~6 min
6060 North Lincoln Avenue, Chicago 60659
Grocery City Fresh Market 0.26 mi ~6 min
Hotel Rio Motel 0.27 mi ~6 min
6155 North Jersey Avenue, Chicago 60659
Pharmacy Walgreens 0.30 mi ~7 min
Grocery Aldi 0.35 mi ~8 min
6220 North California Avenue, Chicago 60659
Mo-Su 08:30-20:00
Hotel Rodeway Inn 0.36 mi ~8 min
Convenience Acro 0.47 mi ~10 min
2758 West Peterson Avenue, Chicago 60659
Gas station Arco 0.47 mi ~10 min
2758 West Peterson Avenue, Chicago 60659
Convenience BP Shop 0.49 mi ~10 min
2751 West Peterson Avenue, Chicago 60659
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 |
|---|---|---|
| 209027618 | IL | Psychiatric/Mental Health Nurse… primary |
This provider holds licence 209027618 issued in IL. A licence number in NPPES reflects what was filed at registration — it does not confirm the licence is still active today.
- Status
- Approved
- Provider type
- Practitioner - Nurse Practitioner
- PAC ID
- 7810331774
Enrolled in Medicare 2 times, across 2 states:
| State | Enrollment ID | Provider type |
|---|---|---|
| Illinois | I20240219002390 | Practitioner - Nurse Practitioner |
| Indiana | I20240826001895 | Practitioner - Nurse Practitioner |
Medicare enrolment is recorded as approved under the provider type Practitioner - Nurse Practitioner. There are 2 separate enrolment records across 2 states (IL, IN). Multiple enrolments usually mean the provider bills Medicare from more than one practice location, or has kept an earlier enrolment after moving. Each record carries its own enrolment ID, listed above. Being enrolled means the provider can bill Medicare; it does not tell you whether they are currently accepting new Medicare patients. Call the office to confirm.
What Psychiatric/Mental Health covers
Definition to come... NUCC Health Care Provider Taxonomy, code 363LP0808X
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 | 1003591017 valid check digit |
|---|---|
| Entity type | Individual (NPI-1) |
| Enumeration date | Jun 19, 2023 |
| Last updated | Jun 19, 2023 |
| Status | Active |
| Sole proprietor | No |
| Gender | Female |
| Credential | APRN |
| Practice address |
6223 N ALBANY AVE Chicago, IL 60659 (773) 986-1546 |
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 | 5 | 9 | 1 | 0 | 1 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Doubled? | — | ×2 | — | ×2 | — | ×2 | — | ×2 | — | ×2 | — | ×2 | — | ×2 |
| Value | 8 | 0 | 8 | 8 | 0 | 2 | 0 | 0 | 3 | 1 | 9 | 2 | 0 | 2 |
Sum = 43 · next multiple of 10 = 50 · check digit = 7 · actual last digit = 7
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.