CHAPARRAL MEDICAL GROUP, INC.
CHAPARRAL MEDICAL GROUP, INC. is an organization registered with the National Plan and Provider Enumeration System (NPPES) under NPI 1346639952, based in Rancho Cucamonga, CA. The organization lists 10 taxonomy classifications, with Cardiovascular Disease Physician recorded as primary.
Getting there
The practice address on file is 8330 RED OAK ST STE 101, Rancho Cucamonga, CA 91730. 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
NPPES does not list a state licence number for this record. That is not unusual — organizations and some provider types are not required to file one. Verify current licensure with the relevant state board before care.
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
All registered taxonomy codes
This provider registers 10 taxonomy codes. The primary code is what appears on most claims; the others record additional recognised specialties.
| Code | Specialty | Licence | State | |
|---|---|---|---|---|
| 207RC0000X | Cardiovascular Disease Physician Cardiovascular Disease | — | CA | primary |
| 207UN0901X | Nuclear Cardiology Physician Nuclear Cardiology | — | CA | |
| 251X00000X | Supports Brokerage Agency | — | — | |
| 171M00000X | Case Manager/Care Coordinator | — | — | |
| 207RC0200X | Critical Care Medicine (Internal Medicine) Physician Critical Care Medicine | — | — | |
| 207RS0012X | Sleep Medicine (Internal Medicine) Physician Sleep Medicine | — | — | |
| 207RP1001X | Pulmonary Disease Physician Pulmonary Disease | — | — | |
| 207Q00000X | Family Medicine Physician | — | CA | |
| 207RG0300X | Geriatric Medicine (Internal Medicine) Physician Geriatric Medicine | — | CA | |
| 207R00000X | Internal Medicine Physician | — | CA |
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 | 1346639952 valid check digit |
|---|---|
| Entity type | Organization (NPI-2) |
| Enumeration date | Jan 20, 2015 |
| Last updated | Feb 24, 2026 |
| Status | Active |
| Practice address |
8330 RED OAK ST STE 101 Rancho Cucamonga, CA 91730 (909) 987-4922 Fax (909) 466-1190 |
| Mailing address |
840 TOWNE CENTER DR Pomona, CA 91767 |
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 | 3 | 4 | 6 | 6 | 3 | 9 | 9 | 5 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Doubled? | — | ×2 | — | ×2 | — | ×2 | — | ×2 | — | ×2 | — | ×2 | — | ×2 |
| Value | 8 | 0 | 8 | 8 | 0 | 2 | 3 | 8 | 6 | 3 | 3 | 9 | 9 | 1 |
Sum = 68 · next multiple of 10 = 70 · check digit = 2 · actual last digit = 2
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.