Diane Tran, MD
Diane Tran, MD is an Advanced Heart Failure and Transplant Cardiology Physician in Mission Viejo, CA, registered under NPI 1962665786. This provider registers 3 separate taxonomy codes, which usually means they practise across more than one recognised specialty. NPPES records them as a sole proprietor, meaning the practice is not incorporated as a separate legal entity.
Getting there
The practice address on file is 26800 CROWN VALLEY PKWY STE 250, Mission Viejo, CA 92691. 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 |
|---|---|---|
| A135647 | CA | Advanced Heart Failure and Transplant… primary |
| 16613 | HI | Cardiovascular Disease Physician |
| 12218 16015811 1A | CT | Internal Medicine Physician |
| A135647 | CA | Cardiovascular Disease Physician |
Licences are recorded in 3 states: CA, HI, CT. Providers licensed in several states often practise near a state border or deliver telehealth across state lines.
- Status
- Approved
- Provider type
- Practitioner - Advanced Heart Failure And Transplant Cardiology
- PAC ID
- 9739470873
- Enrollment ID
- I20210525001418
Medicare enrolment is recorded as approved under the provider type Practitioner - Advanced Heart Failure And Transplant Cardiology. 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.
Licensed in 3 states
This provider holds licences in 3 states: California, Connecticut and Hawaii. The practice address on file is in Mission Viejo, CA, but a licence in another state usually means they see patients there too — either at a second location or by telehealth. If the address above is far from you, it is worth calling to ask whether they practise closer to where you live.
- Licence
- A135647
- Specialty
- Advanced Heart Failure and Transplant…
- Licence
- 12218 16015811 1A
- Specialty
- Internal Medicine Physician
Licence numbers are self-reported to NPPES at registration. They do not confirm a licence is currently active, in good standing, or valid for the specialty shown — only the state board can tell you that, which is why we link to each one.
What Advanced Heart Failure and Transplant Cardiology covers
Specialists in Advanced Heart Failure and Transplant Cardiology would participate in the inpatient and outpatient management of patients with advanced heart failure across the spectrum from consideration for high-risk cardiac surgery, cardiac transplantation, or mechanical circulatory support, to pre-and post-operative evaluation and management of patients with cardiac transplants and mechanical support devices, and end-of-life care for patients with end-stage heart failure. NUCC Health Care Provider Taxonomy, code 207RA0001X
All registered taxonomy codes
This provider registers 4 taxonomy codes. The primary code is what appears on most claims; the others record additional recognised specialties.
| Code | Specialty | Licence | State | |
|---|---|---|---|---|
| 207RA0001X | Advanced Heart Failure and Transplant Cardiology Physician Advanced Heart Failure and Transplant Cardiology | A135647 | CA | primary |
| 207RC0000X | Cardiovascular Disease Physician Cardiovascular Disease | 16613 | HI | |
| 207R00000X | Internal Medicine Physician | 12218 16015811 1A | CT | |
| 207RC0000X | Cardiovascular Disease Physician Cardiovascular Disease | A135647 | 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-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 | 1962665786 valid check digit |
|---|---|
| Entity type | Individual (NPI-1) |
| Enumeration date | Jul 2, 2008 |
| Last updated | May 15, 2026 |
| Status | Active |
| Sole proprietor | Yes |
| Credential | MD |
| Practice address |
26800 CROWN VALLEY PKWY STE 250 Mission Viejo, CA 92691 (949) 364-3570 |
| Mailing address |
11234 ANDERSON ST # 1617 Loma Linda, CA 92350 |
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 | 6 | 2 | 6 | 6 | 5 | 7 | 8 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Doubled? | — | ×2 | — | ×2 | — | ×2 | — | ×2 | — | ×2 | — | ×2 | — | ×2 |
| Value | 8 | 0 | 8 | 8 | 0 | 2 | 9 | 3 | 2 | 3 | 6 | 1 | 7 | 7 |
Sum = 64 · next multiple of 10 = 70 · check digit = 6 · actual last digit = 6
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.