Lesley Osborn, MD
Lesley Osborn, MD is an Emergency Medicine Physician in Aurora, CO, registered under NPI 1003253725.
Getting there
Here is what surrounds this office in Aurora, based on OpenStreetMap data collected Sep 7, 2026. Parking is available about 0.38 mi away at Fitzsimons Village Parking Garage. The nearest transit stop is 595 ft away, served by UCH. A pharmacy sits 755 ft from the entrance (Outpatient Pharmacy), which helps if you leave with a prescription. If you arrive early, there is a coffee shop 0.20 mi away.
Getting here and what is nearby
Pharmacy Atrium Pharmacy 462 ft ~2 min
Restaurant Jimmy John's 511 ft ~2 min
12501 East 17th Avenue, Aurora 80045
Mo-Fr 10:00-17:30; Sa 10:00-15:00
Transit E 16th Ave & Quentin St 576 ft ~3 min
Transit Quentin St & 16th Ave 593 ft ~3 min
Transit UCH 595 ft ~3 min
Coffee Dazbog Coffee 564 ft ~3 min
Restaurant Subway 561 ft ~3 min
12501 East 17th Avenue, Aurora 80045
Su 08:00-18:00; Mo-Fr 06:30-20:30; Sa 08:00-18:00
Coffee Dazbog Coffee 647 ft ~3 min
Parking Leprino Parking Garage 647 ft ~3 min
12501 East 17th Avenue, 80045
Restaurant Chai & Chai 617 ft ~3 min
12501 East 17th Avenue, 80045
Mo-Tu 11:00-14:00; We-Fr 11:00-14:00, 17:30-20:30; Sa 17:30-20:30
Pharmacy Outpatient Pharmacy 755 ft ~3 min
Coffee Starbucks 0.20 mi ~4 min
Gas station Diamond Shamrock 0.21 mi ~5 min
Convenience Corner Store Express 0.22 mi ~5 min
Hotel Hyatt House Denver / Aurora 0.23 mi ~5 min
Gas station Phillips 66 0.29 mi ~6 min
Convenience 7-Eleven 0.30 mi ~6 min
Hotel Mon Chalet 0.31 mi ~7 min
12033 East Colfax Avenue, Aurora 80010
Convenience 7-Eleven 0.32 mi ~7 min
Parking Henderson Garage (Visitor/Patient & Permit) 0.35 mi ~7 min
12706 East Montview Boulevard, Aurora 80010
Parking Fitzsimons Village Parking Garage 0.38 mi ~8 min
1420 South Ursula Street, Aurora 80011
Gas station Conoco 0.40 mi ~9 min
Hotel Kings Inn motel 0.46 mi ~10 min
11800 East Colfax Avenue, Aurora 80010
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 |
|---|---|---|
| Q7441 | TX | Emergency Medicine Physician |
| MD35681 | SC | Emergency Medicine Physician |
| DR.0071620 | CO | Emergency Medicine Physician primary |
Licences are recorded in 3 states: TX, SC, CO. Providers licensed in several states often practise near a state border or deliver telehealth across state lines.
- Status
- Approved
- Provider type
- Practitioner - Emergency Medicine
- PAC ID
- 8527374479
Enrolled in Medicare 4 times, across 4 states:
| State | Enrollment ID | Provider type |
|---|---|---|
| Texas | I20160513000042 | Practitioner - Emergency Medicine |
| Colorado | I20230926002583 | Practitioner - Emergency Medicine |
| Maryland | I20251017001327 | Practitioner - Emergency Medicine |
| California | I20251021000445 | Practitioner - Emergency Medicine |
Medicare enrolment is recorded as approved under the provider type Practitioner - Emergency Medicine. There are 4 separate enrolment records across 4 states (TX, CO, MD, CA). 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.
Licensed in 3 states
This provider holds licences in 3 states: Colorado, South Carolina and Texas. The practice address on file is in Aurora, CO, 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
- DR.0071620
- Specialty
- Emergency 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 Emergency Medicine covers
An emergency physician focuses on the immediate decision making and action necessary to prevent death or any further disability both in the pre-hospital setting by directing emergency medical technicians and in the emergency department. The emergency physician provides immediate recognition, evaluation, care, stabilization and disposition of a generally diversified population of adult and pediatric patients in response to acute illness and injury. NUCC Health Care Provider Taxonomy, code 207P00000X
All registered taxonomy codes
This provider registers 3 taxonomy codes. The primary code is what appears on most claims; the others record additional recognised specialties.
| Code | Specialty | Licence | State | |
|---|---|---|---|---|
| 207P00000X | Emergency Medicine Physician | Q7441 | TX | |
| 207P00000X | Emergency Medicine Physician | MD35681 | SC | |
| 207P00000X | Emergency Medicine Physician | DR.0071620 | CO | primary |
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 | 1003253725 valid check digit |
|---|---|
| Entity type | Individual (NPI-1) |
| Enumeration date | Jun 4, 2013 |
| Last updated | Feb 24, 2025 |
| Status | Active |
| Sole proprietor | No |
| Gender | Female |
| Credential | MD |
| Practice address |
12505 E 16TH AVE Aurora, CO 80045 (720) 848-0000 |
| Mailing address |
PO BOX 110429 Aurora, CO 80042 |
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 | 5 | 3 | 7 | 2 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Doubled? | — | ×2 | — | ×2 | — | ×2 | — | ×2 | — | ×2 | — | ×2 | — | ×2 |
| Value | 8 | 0 | 8 | 8 | 0 | 2 | 0 | 0 | 3 | 4 | 5 | 6 | 7 | 4 |
Sum = 55 · next multiple of 10 = 60 · check digit = 5 · actual last digit = 5
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.