Masanori Tsubosaka, MD, PHD
Masanori Tsubosaka, MD, PHD is a provider specialising in Student in an Organized Health Care Education/Training Program in Stanford, CA, registered under NPI 1003561507.
Getting there
Here is what surrounds this office in Stanford, based on OpenStreetMap data collected Oct 6, 2026. Parking is available about 0.20 mi away at Stock Farm South Lot. The nearest transit stop is 632 ft away, served by Medical School Office Building. If you arrive early, there is a coffee shop 0.33 mi away.
Getting here and what is nearby
Restaurant Lutticken's Deli 124 ft ~1 min
Mo-Fr 07:30-16:00
Restaurant Beckman Bistro 369 ft ~2 min
Mo-Fr 07:30-15:30
Transit Campus Drive & Panama Street 547 ft ~3 min
Transit Li Ka Shing Center 618 ft ~3 min
Transit Medical School Office Building 632 ft ~3 min
Parking Pasteur Visitor Garage A 622 ft ~3 min
200 Palo Alto, Palo Alto 94304
Restaurant Market Square Cafeteria 917 ft ~4 min
Mo-Su 06:00-20:00
Parking Pasteur Staff Garage 975 ft ~4 min
1189 Welch Road, Stanford
Parking Stock Farm South Lot 0.20 mi ~5 min
199 Stock Farm Road, Stanford
Coffee Coupa Cafe 0.29 mi ~6 min
Coffee Bytes Cafe 0.29 mi ~6 min
Mo-Fr 07:30-17:00
Coffee Coupa Cafe - Huang Engineering Center 0.33 mi ~7 min
Convenience Corner Store 0.47 mi ~10 min
Hotel Oak Creek Apartments | Stanford 0.51 mi ~11 min
1560 Sand Hill Road, Palo Alto
Distances are straight‑line estimates — walking routes may be longer. Hours and phone numbers can change; call ahead to confirm.
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 Student in an Organized Health Care Education/Training Program covers
An individual who is enrolled in an organized health care education/training program leading to a degree, certification, registration, and/or licensure to provide health care. NUCC Health Care Provider Taxonomy, code 390200000X
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 | 1003561507 valid check digit |
|---|---|
| Entity type | Individual (NPI-1) |
| Enumeration date | Feb 14, 2022 |
| Last updated | Feb 14, 2022 |
| Status | Active |
| Sole proprietor | No |
| Gender | Male |
| Credential | MD, PHD |
| Practice address |
269 CAMPUS DR Stanford, CA 94305 (650) 723-7887 Fax (650) 725-1958 |
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 | 5 | 6 | 1 | 5 | 0 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Doubled? | — | ×2 | — | ×2 | — | ×2 | — | ×2 | — | ×2 | — | ×2 | — | ×2 |
| Value | 8 | 0 | 8 | 8 | 0 | 2 | 0 | 0 | 3 | 1 | 6 | 2 | 5 | 0 |
Sum = 43 · next multiple of 10 = 50 · check digit = 7 · actual last digit = 7
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.