ADVENTIST HEALTH CLEARLAKE HOSPITAL INC.
ADVENTIST HEALTH CLEARLAKE HOSPITAL INC. is an organization registered with the National Plan and Provider Enumeration System (NPPES) under NPI 1124018031, based in Clearlake, CA. It is classified under Critical Access Hospital.
Getting there
The practice address on file is 15630 18TH AVE, Clearlake, CA 95422. We have not yet mapped what surrounds this office — parking, transit, and nearby pharmacies are added as our data collection reaches each location.
Credentials and Medicare
| Licence | State | Specialty |
|---|---|---|
| 110000174 | CA | Critical Access Hospital primary |
This provider holds licence 110000174 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
- Part B Supplier - Clinic/group Practice
- PAC ID
- 3072421197
Medicare enrolment is recorded as approved under the provider type Part B Supplier - Clinic/group Practice. This means the provider is enrolled to bill Medicare, though it does not tell you whether they are currently accepting new Medicare patients. Call the office to confirm.
What Critical Access covers
Definition to come. NUCC Health Care Provider Taxonomy, code 282NC0060X
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-2 identifies an organization — a clinic, hospital, group practice, laboratory, or supplier. Individual clinicians working there hold their own NPI-1 numbers separately, so a bill may reference both.
| NPI | 1124018031 valid check digit |
|---|---|
| Entity type | Organization (NPI-2) |
| Enumeration date | Oct 24, 2005 |
| Last updated | Sep 15, 2025 |
| Status | Active |
| Practice address |
15630 18TH AVE Clearlake, CA 95422 (707) 994-6486 Fax (707) 995-3631 |
| Mailing address |
PO BOX 888837 Los Angeles, CA 90088 |
| Other identifiers |
HSP40539G
(CA) ZZZC1702Z · BLUE SHIELD INPATIENT (CA) ZZR00539G (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 | 1 | 2 | 4 | 0 | 1 | 8 | 0 | 3 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Doubled? | — | ×2 | — | ×2 | — | ×2 | — | ×2 | — | ×2 | — | ×2 | — | ×2 |
| Value | 8 | 0 | 8 | 8 | 0 | 2 | 1 | 4 | 4 | 0 | 1 | 7 | 0 | 6 |
Sum = 49 · next multiple of 10 = 50 · check digit = 1 · actual last digit = 1
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.