Juan Casillas, NP
Juan Casillas, NP is a Family Nurse Practitioner in Oakland, CA, registered under NPI 1003165135. 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 Oakland, based on OpenStreetMap data collected Sep 4, 2026. Parking is available about 265 ft away at Employee Parking. The nearest transit stop is 0.48 mi away, served by Park Boulevard & Greenwood Avenue.
Getting here and what is nearby
Parking Employee Parking 141 ft ~1 min
Parking Employee Parking 166 ft ~1 min
Transit 14th Avenue & East 29th Street 288 ft ~2 min
Parking Employee Parking 265 ft ~2 min
Transit 14th Avenue & 19th Avenue 357 ft ~2 min
Restaurant Cafeteria 405 ft ~2 min
Gas station QuikStop 760 ft ~3 min
Convenience Sky Market 790 ft ~3 min
Restaurant Taqueria el Cruzero 0.25 mi ~6 min
1309 MacArthur Boulevard
Mo-Fr 08:00-21:00; Sa 08:00-17:00
Convenience California's 0.26 mi ~6 min
1301 MacArthur Boulevard
Mo-Th, Su 07:00-24:00; Fr, Sa 07:00-01:00
Gas station Arco 0.38 mi ~8 min
Transit Park Boulevard & Greenwood Avenue 0.48 mi ~10 min
3824 Park Boulevard, Oakland 94602
Convenience 24 Hour Convenience Market 0.50 mi ~10 min
2900 Park Boulevard
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 |
|---|---|---|
| 593398 | CA | Registered Nurse |
| 22074 | CA | Family Nurse Practitioner primary |
This provider holds licence 593398 issued in CA. 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
- 9537308515
- Enrollment ID
- I20140505001805
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 | |
|---|---|---|---|---|
| 163W00000X | Registered Nurse | 593398 | CA | |
| 363LF0000X | Family Nurse Practitioner Family | 22074 | CA | 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 | 1003165135 valid check digit |
|---|---|
| Entity type | Individual (NPI-1) |
| Enumeration date | Sep 5, 2012 |
| Last updated | Oct 27, 2022 |
| Status | Active |
| Sole proprietor | No |
| Gender | Male |
| Credential | NP |
| Practice address |
1411 E 31ST ST Oakland, CA 94602 (510) 437-4800 |
| Other identifiers |
1679642326
· Other (CA) |
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 | 1 | 6 | 5 | 1 | 3 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Doubled? | — | ×2 | — | ×2 | — | ×2 | — | ×2 | — | ×2 | — | ×2 | — | ×2 |
| Value | 8 | 0 | 8 | 8 | 0 | 2 | 0 | 0 | 3 | 2 | 6 | 1 | 1 | 6 |
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.