Sonia Mahmood, FNP-C
Sonia Mahmood, FNP-C is a Family Nurse Practitioner in South Elgin, IL, registered under NPI 1003273434. This provider registers 2 separate taxonomy codes, which usually means they practise across more than one recognised specialty.
Getting there
Here is what surrounds this office in South Elgin, based on OpenStreetMap data collected Sep 15, 2026. No dedicated parking is recorded within walking distance, so allow extra time to find street parking. The nearest transit stop is 641 ft away, served by 1115 West Spring Street. A pharmacy sits 605 ft from the entrance (CVS Pharmacy), which helps if you leave with a prescription.
Getting here and what is nearby
Convenience Casey's General Store 233 ft ~1 min
Gas station goodstop by Casey's 217 ft ~1 min
Restaurant Beef Villa 350 ft ~2 min
Transit Spring & McLean 483 ft ~2 min
Restaurant McDonald's 493 ft ~2 min
100 North McLean Boulevard, South Elgin 60177
05:00-23:00
Transit Spring & McLean 557 ft ~3 min
Pharmacy CVS Pharmacy 605 ft ~3 min
Grocery Frank's Freshway Market 573 ft ~3 min
1175 West Spring Street, South Elgin 60177
Transit 1115 West Spring Street 641 ft ~3 min
Gas station Exxon 625 ft ~3 min
Convenience 7-Eleven 692 ft ~3 min
Restaurant Dunkin' 995 ft ~4 min
405 North McLean Boulevard, South Elgin 60177
03:30-21:00
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 |
|---|---|---|
| 209013138 | IL | Family Nurse Practitioner primary |
| 041392408 | IL | Registered Nurse |
This provider holds licence 209013138 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
- 1052691235
- Enrollment ID
- I20161205001305
Medicare enrolment is recorded as approved under the provider type Practitioner - Nurse Practitioner. 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 Family covers
Definition to come... NUCC Health Care Provider Taxonomy, code 363LF0000X
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 | |
|---|---|---|---|---|
| 363LF0000X | Family Nurse Practitioner Family | 209013138 | IL | primary |
| 163W00000X | Registered Nurse | 041392408 | 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 | 1003273434 valid check digit |
|---|---|
| Entity type | Individual (NPI-1) |
| Enumeration date | Jan 14, 2016 |
| Last updated | Oct 28, 2024 |
| Status | Active |
| Sole proprietor | No |
| Gender | Female |
| Credential | FNP-C |
| Practice address |
255 N MCLEAN BLVD South Elgin, IL 60177 (866) 389-2727 |
| Mailing address |
530 RANDALL RD South Elgin, IL 60177 |
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 | 2 | 7 | 3 | 4 | 3 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Doubled? | — | ×2 | — | ×2 | — | ×2 | — | ×2 | — | ×2 | — | ×2 | — | ×2 |
| Value | 8 | 0 | 8 | 8 | 0 | 2 | 0 | 0 | 3 | 4 | 7 | 6 | 4 | 6 |
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.