HAROLD E. QUAN, M.D., INC
HAROLD E. QUAN, M.D., INC is an organization registered with the National Plan and Provider Enumeration System (NPPES) under NPI 1013193671, based in Valencia, CA. It is classified under Cardiovascular Disease Physician.
Getting there
The practice address on file is 23845 MCBEAN PKWY, Valencia, CA 91355. 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 |
|---|---|---|
| A34182 | CA | Cardiovascular Disease Physician primary |
This provider holds licence A34182 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 Cardiovascular Disease covers
An internist who specializes in diseases of the heart and blood vessels and manages complex cardiac conditions such as heart attacks and life-threatening, abnormal heartbeat rhythms. NUCC Health Care Provider Taxonomy, code 207RC0000X
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 | 1013193671 valid check digit |
|---|---|
| Entity type | Organization (NPI-2) |
| Enumeration date | Jan 14, 2008 |
| Last updated | Jan 14, 2008 |
| Status | Active |
| Practice address |
23845 MCBEAN PKWY Valencia, CA 91355 (661) 255-8320 Fax (661) 255-8320 |
| Mailing address |
23928 LYONS AVE SUITE 101 Newhall, CA 91321 |
| Other identifiers |
00A341820
(CA) ZZZ57676Z · BLUE SHIELD |
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 | 1 | 3 | 1 | 9 | 3 | 6 | 7 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Doubled? | — | ×2 | — | ×2 | — | ×2 | — | ×2 | — | ×2 | — | ×2 | — | ×2 |
| Value | 8 | 0 | 8 | 8 | 0 | 2 | 0 | 2 | 3 | 2 | 9 | 6 | 6 | 5 |
Sum = 59 · next multiple of 10 = 60 · 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.