RONALD G. JAN, M.D., INC
RONALD G. JAN, M.D., INC is an organization registered with the National Plan and Provider Enumeration System (NPPES) under NPI 1982946687, based in Sacramento, CA. It is classified under Vascular Surgery Physician.
Getting there
The practice address on file is 5025 J ST SUITE 312, Sacramento, CA 95819. 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 |
|---|---|---|
| G22975 | CA | Vascular Surgery Physician primary |
This provider holds licence G22975 issued in CA. A licence number in NPPES reflects what was filed at registration — it does not confirm the licence is still active today.
This NPI does not appear in the PECOS Medicare enrolment file. Providers who do not bill Medicare — or who bill only through a group's enrolment — will not appear here. It is not a sign of any problem with the registration.
What Vascular Surgery covers
A surgeon with expertise in the management of surgical disorders of the blood vessels, excluding the intracranial vessels or the heart. NUCC Health Care Provider Taxonomy, code 2086S0129X
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 | 1982946687 valid check digit |
|---|---|
| Entity type | Organization (NPI-2) |
| Enumeration date | Mar 20, 2013 |
| Last updated | Mar 20, 2013 |
| Status | Active |
| Practice address |
5025 J ST SUITE 312 Sacramento, CA 95819 (916) 288-0055 Fax (916) 288-0056 |
| Mailing address |
5025 J ST #312 SUITE 312 Sacramento, CA 95819 |
| Other identifiers |
00G229750
(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 | 9 | 8 | 2 | 9 | 4 | 6 | 6 | 8 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Doubled? | — | ×2 | — | ×2 | — | ×2 | — | ×2 | — | ×2 | — | ×2 | — | ×2 |
| Value | 8 | 0 | 8 | 8 | 0 | 2 | 9 | 7 | 2 | 9 | 4 | 3 | 6 | 7 |
Sum = 73 · next multiple of 10 = 80 · check digit = 7 · actual last digit = 7
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.