Leah Glavan, BSN RN CIS
Leah Glavan, BSN RN CIS is an Informatics Clinical Nurse Specialist in Torrance, CA, registered under NPI 1003681230. 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 Torrance, based on OpenStreetMap data collected Sep 4, 2026. Parking is available about 0.54 mi away. There is EV charging 725 ft from the office — useful if you are driving in from out of town. The nearest transit stop is 1,015 ft away. A pharmacy sits 0.32 mi from the entrance (CVS Pharmacy), which helps if you leave with a prescription. If you arrive early, there is a coffee shop 0.36 mi away.
Getting here and what is nearby
Parking 132 ft ~1 min
Transit 447 ft ~2 min
Restaurant El Burrito, Jr. 522 ft ~2 min
21141 Hawthorne Boulevard
Transit 578 ft ~3 min
Grocery Amazon Fresh 569 ft ~3 min
21035 Hawthorne Boulevard
Restaurant Marugame Udon 632 ft ~3 min
EV charging 712 ft ~3 min
Restaurant The Kebab Shop 687 ft ~3 min
EV charging 725 ft ~3 min
EV charging 725 ft ~3 min
Coffee Starbucks 818 ft ~4 min
Transit 1,015 ft ~4 min
Gas station 76 0.23 mi ~5 min
Pharmacy Premier Family 0.23 mi ~5 min
Convenience 76 0.24 mi ~5 min
Grocery Hannam Chain 0.25 mi ~6 min
21305 Hawthorne Boulevard
Gas station Sinclair 0.29 mi ~6 min
Hotel Residence Inn 0.31 mi ~7 min
Coffee Copa Vida 0.32 mi ~7 min
21250 Hawthorne Boulevard, Torrance 90503
Mo-Fr 07:00-15:00
Convenience 7-Eleven 0.32 mi ~7 min
Pharmacy CVS Pharmacy 0.32 mi ~7 min
4625 Torrance Boulevard, 90503
Mo-Fr 09:00-20:00; Sa-Su 10:00-18:00
Hotel Howard Johnson by Wyndham Torrance 0.33 mi ~7 min
3673 Torrance Boulevard, Torrance 90503
Coffee The Coffee Bean & Tea Leaf 0.36 mi ~8 min
21300 Hawthorne Boulevard, Torrance 90503
Mo-Th 05:30-21:00; Fr 05:30-22:00; Sa 06:00-22:00; Su 06:00-21:00
Parking 0.37 mi ~8 min
21258 Hawthorne Boulevard
Grocery Vons 0.37 mi ~8 min
4705 Torrance Boulevard, Torrance 90503
Mo-Su 06:00-23:00
Hotel Torrance Marriott Redondo Beach 0.43 mi ~9 min
3635 Fashion Way, Torrance 90503
Parking 0.54 mi ~11 min
3490 Fashion Way
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 |
|---|---|---|
| 481004 | CA | Informatics Clinical Nurse Specialist primary |
| 481004 | CA | Orthopedic Registered Nurse |
This provider holds licence 481004 issued in CA. 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 Informatics covers
Definition to come... NUCC Health Care Provider Taxonomy, code 364SI0800X
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 | |
|---|---|---|---|---|
| 364SI0800X | Informatics Clinical Nurse Specialist Informatics | 481004 | CA | primary |
| 163WX0800X | Orthopedic Registered Nurse Orthopedic | 481004 | CA |
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 | 1003681230 valid check digit |
|---|---|
| Entity type | Individual (NPI-1) |
| Enumeration date | Nov 17, 2023 |
| Last updated | Nov 17, 2023 |
| Status | Active |
| Sole proprietor | No |
| Gender | Female |
| Credential | BSN RN CIS |
| Practice address |
4101 TORRANCE BLVD Torrance, CA 90503 (310) 540-7676 |
| Mailing address |
1801 LIND AVE SW Renton, WA 98057 |
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 | 6 | 8 | 1 | 2 | 3 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Doubled? | — | ×2 | — | ×2 | — | ×2 | — | ×2 | — | ×2 | — | ×2 | — | ×2 |
| Value | 8 | 0 | 8 | 8 | 0 | 2 | 0 | 0 | 3 | 3 | 8 | 2 | 2 | 6 |
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.