Nathaniel Civili, NP
Nathaniel Civili, NP is a Family Nurse Practitioner in Castle Rock, CO, registered under NPI 1003457276. NPPES records them as a sole proprietor, meaning the practice is not incorporated as a separate legal entity.
Getting there
Here is what surrounds this office in Castle Rock, based on OpenStreetMap data collected Sep 28, 2026. Parking is available about 327 ft away.
Getting here and what is nearby
Parking 152 ft ~1 min
Parking 281 ft ~2 min
Parking 327 ft ~2 min
Restaurant McDonald's 320 ft ~2 min
1025 Aloha Street, Castle Rock 80104
Convenience 7-Eleven 373 ft ~2 min
1175 Aloha Street, Castle Rock 80106
Gas station Phillips 66 417 ft ~2 min
1175 Aloha Street, Castle Rock 80106
Restaurant Tasty House 619 ft ~3 min
Restaurant Subway 755 ft ~3 min
848 North Ridge Road, Castle Rock 80104
Mo-Sa 08:00-20:30; Su 08:00-20:00
Grocery King Soopers 877 ft ~4 min
Gas station King Soopers Gas Station 0.25 mi ~5 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 |
|---|---|---|
| APN.0994776-NP | CO | Family Nurse Practitioner primary |
This provider holds licence APN.0994776-NP issued in CO. 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
- 3971924945
- Enrollment ID
- I20200528003369
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
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 | 1003457276 valid check digit |
|---|---|
| Entity type | Individual (NPI-1) |
| Enumeration date | Sep 30, 2019 |
| Last updated | May 13, 2025 |
| Status | Active |
| Sole proprietor | Yes |
| Gender | Male |
| Credential | NP |
| Practice address |
1151 ALOHA ST STE 100 Castle Rock, CO 80108 (720) 330-1305 Fax (720) 452-2079 |
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 | 4 | 5 | 7 | 2 | 7 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Doubled? | — | ×2 | — | ×2 | — | ×2 | — | ×2 | — | ×2 | — | ×2 | — | ×2 |
| Value | 8 | 0 | 8 | 8 | 0 | 2 | 0 | 0 | 3 | 8 | 5 | 5 | 2 | 5 |
Sum = 54 · next multiple of 10 = 60 · check digit = 6 · actual last digit = 6
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.