Andrew Nguyen, MD
Andrew Nguyen, MD is a Cardiovascular Disease Physician in Stanford, CA, registered under NPI 1003436593. This provider registers 2 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
Here is what surrounds this office in Stanford, based on OpenStreetMap data collected Aug 28, 2026. Parking is available about 0.21 mi away at Pasteur Staff Garage. The nearest transit stop is 532 ft away, served by Stanford Medical Center. If you arrive early, there is a coffee shop 0.30 mi away.
Getting here and what is nearby
Transit Medical School 369 ft ~2 min
Restaurant Beckman Bistro 366 ft ~2 min
Mo-Fr 07:30-15:30
Transit Quarry Extension Mid-block 448 ft ~2 min
Restaurant Lutticken's Deli 490 ft ~2 min
Mo-Fr 07:30-16:00
Restaurant Market Square Cafeteria 493 ft ~2 min
Mo-Su 06:00-20:00
Transit Stanford Medical Center 532 ft ~3 min
Parking Pasteur Visitor Garage A 890 ft ~4 min
200 Palo Alto, Palo Alto 94304
Parking Roth Way Garage 901 ft ~4 min
345 Campus Drive, Stanford
Parking Pasteur Staff Garage 0.21 mi ~5 min
1189 Welch Road, Stanford
Coffee Bytes Cafe 0.25 mi ~6 min
Mo-Fr 07:30-17:00
Coffee Voyager Craft Coffee 0.28 mi ~6 min
389 Jane Stanford Way, Stanford 94305
Mo-Fr 07:00-17:00
Coffee Coupa Cafe 0.30 mi ~7 min
Convenience Corner Store 0.46 mi ~10 min
Distances are straight‑line estimates — walking routes may be longer. Hours and phone numbers can change; call ahead to confirm.
Credentials and Medicare
| Licence | State | Specialty |
|---|---|---|
| A188611 | CA | Cardiovascular Disease Physician primary |
| 1003436593 | CA | Cardiovascular Disease Physician |
| A188611 | CA | Internal Medicine Physician |
This provider holds licence A188611 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 - Cardiovascular Disease (cardiology)
- PAC ID
- 2769958198
- Enrollment ID
- I20260414002244
Medicare enrolment is recorded as approved under the provider type Practitioner - Cardiovascular Disease (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.
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 3 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 | A188611 | CA | primary |
| 207RC0000X | Cardiovascular Disease Physician Cardiovascular Disease | 1003436593 | CA | |
| 207R00000X | Internal Medicine Physician | A188611 | 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 | 1003436593 valid check digit |
|---|---|
| Entity type | Individual (NPI-1) |
| Enumeration date | Apr 24, 2020 |
| Last updated | Jul 23, 2026 |
| Status | Active |
| Sole proprietor | Yes |
| Gender | Male |
| Credential | MD |
| Practice address |
300 PASTEUR DR Stanford, CA 94305 (650) 723-6661 |
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 | 4 | 3 | 6 | 5 | 9 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Doubled? | — | ×2 | — | ×2 | — | ×2 | — | ×2 | — | ×2 | — | ×2 | — | ×2 |
| Value | 8 | 0 | 8 | 8 | 0 | 2 | 0 | 0 | 3 | 8 | 3 | 3 | 5 | 9 |
Sum = 57 · next multiple of 10 = 60 · check digit = 3 · actual last digit = 3
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.