Sujoya Dey, MD
Sujoya Dey, MD is a Clinical Cardiac Electrophysiology Physician in Larkspur, CA, registered under NPI 1003934449. This provider registers 3 separate taxonomy codes, which usually means they practise across more than one recognised specialty.
Getting there
The practice address on file is 2 BON AIR RD SUITE 100, Larkspur, CA 94939. 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 |
|---|---|---|
| A104399 | CA | Clinical Cardiac Electrophysiology… primary |
| A104399 | CA | Internal Medicine Physician |
| A104399 | CA | Cardiovascular Disease Physician |
This provider holds licence A104399 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
- Practitioner - Cardiac Electrophysiology
- PAC ID
- 9032206024
Medicare enrolment is recorded as approved under the provider type Practitioner - Cardiac Electrophysiology. 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 Clinical Cardiac Electrophysiology covers
A field of special interest within the subspecialty of cardiovascular disease, specialty of Internal Medicine, which involves intricate technical procedures to evaluate heart rhythms and determine appropriate treatment for them. NUCC Health Care Provider Taxonomy, code 207RC0001X
All registered taxonomy codes
This provider registers 3 taxonomy codes. The primary code is what appears on most claims; the others record additional recognised specialties.
| Code | Specialty | Licence | State | |
|---|---|---|---|---|
| 207RC0001X | Clinical Cardiac Electrophysiology Physician Clinical Cardiac Electrophysiology | A104399 | CA | primary |
| 207R00000X | Internal Medicine Physician | A104399 | CA | |
| 207RC0000X | Cardiovascular Disease Physician Cardiovascular Disease | A104399 | 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 | 1003934449 valid check digit |
|---|---|
| Entity type | Individual (NPI-1) |
| Enumeration date | Mar 26, 2007 |
| Last updated | May 16, 2012 |
| Status | Active |
| Sole proprietor | No |
| Credential | MD |
| Practice address |
2 BON AIR RD SUITE 100 Larkspur, CA 94939 (415) 927-0666 Fax (415) 927-6168 |
| Other identifiers |
A 104399
· CALIFORNIA MEDICAL BOARD LICENSE NUMBER (CA) 4301080717 · MICHIGAN MEDICAL LICENSE (MI) |
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 | 0 | 3 | 9 | 3 | 4 | 4 | 4 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Doubled? | — | ×2 | — | ×2 | — | ×2 | — | ×2 | — | ×2 | — | ×2 | — | ×2 |
| Value | 8 | 0 | 8 | 8 | 0 | 2 | 0 | 0 | 3 | 9 | 3 | 8 | 4 | 8 |
Sum = 61 · next multiple of 10 = 70 · check digit = 9 · actual last digit = 9
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.