Jill Marks, RN, APN
Jill Marks, RN, APN is a Pediatric Nurse Practitioner in Aurora, CO, registered under NPI 1003074105. 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 Aurora, based on OpenStreetMap data collected Aug 29, 2026. Parking is available about 0.22 mi away at Children's East Garage (#9 - Permit Parking). The nearest transit stop is 512 ft away, served by Education & Dental. A pharmacy sits 0.46 mi from the entrance (CarePlus CVS Pharmacy), which helps if you leave with a prescription. If you arrive early, there is a coffee shop 0.30 mi away.
Getting here and what is nearby
Transit Aurora Court & 16th Avenue 410 ft ~2 min
Transit Aurora Court & 16th Avenue 442 ft ~2 min
Transit Education & Dental 512 ft ~2 min
Parking Children's South Parking Garage (#1 - Public) 699 ft ~3 min
13229 East 16th Avenue, Aurora 80045
Restaurant Panera Bread 880 ft ~4 min
13100 East Colfax Avenue, Aurora 80011
Mo-Sa 06:00-20:30; Su 07:00-20:00
Pharmacy Outpatient Pharmacy 0.20 mi ~5 min
Parking Fitzsimons Village Parking Garage 0.21 mi ~5 min
1420 South Ursula Street, Aurora 80011
Coffee Starbucks 0.22 mi ~5 min
13120 East 19th Avenue, 80045
Hotel SpringHill Suites Denver at Anschutz Medical Campus 0.22 mi ~5 min
Parking Children's East Garage (#9 - Permit Parking) 0.22 mi ~5 min
1660 Victor Street, Aurora 80045
Restaurant Courtyard Cafe 0.22 mi ~5 min
Coffee Dazbog Coffee 0.23 mi ~5 min
Restaurant Intermission Cafe 0.24 mi ~5 min
Pharmacy Atrium Pharmacy 0.26 mi ~6 min
Convenience Corner Store Express 0.28 mi ~6 min
Gas station Diamond Shamrock 0.28 mi ~6 min
Coffee Starbucks 0.30 mi ~7 min
Hotel Hyatt Regency Aurora-Denver Conference Center 0.34 mi ~7 min
Hotel The Benson Hotel & Faculty Club 0.40 mi ~8 min
Pharmacy CarePlus CVS Pharmacy 0.46 mi ~10 min
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 |
|---|---|---|
| 209007065 | IL | Pediatric Nurse Practitioner |
| NP-990223 | CO | Pediatric Nurse Practitioner primary |
| RN-201694 | CO | Registered Nurse |
Licences are recorded in 2 states: IL, CO. Providers licensed in several states often practise near a state border or deliver telehealth across state lines.
- Status
- Approved
- Provider type
- Practitioner - Nurse Practitioner
- PAC ID
- 1254505639
- Enrollment ID
- I20111121000722
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.
Licensed in 2 states
This provider holds licences in 2 states: Colorado and Illinois. 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
- NP-990223
- Specialty
- Pediatric Nurse Practitioner
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 Pediatrics covers
Definition to come... NUCC Health Care Provider Taxonomy, code 363LP0200X
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 | |
|---|---|---|---|---|
| 363LP0200X | Pediatric Nurse Practitioner Pediatrics | 209007065 | IL | |
| 363LP0200X | Pediatric Nurse Practitioner Pediatrics | NP-990223 | CO | primary |
| 163W00000X | Registered Nurse | RN-201694 | CO |
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 | 1003074105 valid check digit |
|---|---|
| Entity type | Individual (NPI-1) |
| Enumeration date | May 27, 2008 |
| Last updated | Oct 27, 2011 |
| Status | Active |
| Sole proprietor | No |
| Gender | Female |
| Credential | RN, APN |
| Practice address |
13123 E 16TH AVE Aurora, CO 80045 (720) 777-1234 |
| Mailing address |
PO BOX 876 Aurora, CO 80040 |
| Other names |
Jill Goessl Former Legal Business Name |
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 | 7 | 4 | 1 | 0 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Doubled? | — | ×2 | — | ×2 | — | ×2 | — | ×2 | — | ×2 | — | ×2 | — | ×2 |
| Value | 8 | 0 | 8 | 8 | 0 | 2 | 0 | 0 | 3 | 0 | 7 | 8 | 1 | 0 |
Sum = 45 · next multiple of 10 = 50 · 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.