Dr. Ei E. Tun, MD
Internal Medicine (Internal Medicine Physician)
700 Lawrence Expy
Santa Clara, CA 95051
Who else practices at this address →
Santa Clara County includes mental health (13% of residents) shortage areas. About shortage areas
At a glance
- Years since graduation
- 15
- In the NPI registry since
- 2022
Licensed in California since 2025, according to the Medical Board of California. We show license dates only for the states that publish them in bulk; see which states do. For other states, check the state medical board.
The NPI date is when this clinician registered for a National Provider Identifier, the billing number used on health claims. It is not a license, graduation or board-certification date. What an NPI is
Education and training
- 2022Registered with an NPI (national billing number; not a license date)
Medicare’s Care Compare data doesn’t list this clinician’s medical school. Undergraduate school, residency, fellowship, licensing exams and board certification aren’t in public federal data. Board certification can be confirmed with the certifying board (ABMS member boards for MDs, AOA boards for DOs).
Specialties and state licenses
-
Internal Medicine Physician primary
CA license A202290 (first issued 2025; current) - Student in an Organized Health Care Education/Training Program
As reported to the NPI registry. To confirm a license is current, check the state medical board.
Where they work
Medical groups
- Permanente Medical Group Inc (10,996 clinicians)
Hospitals this clinician lists with Medicare, and groups they bill Medicare through (Care Compare). Affiliation doesn’t mean they see patients at every location.
Medicare prescriptions
| Drug | Prescriptions |
|---|---|
| Atorvastatin Calcium Other prescribers in Santa Clara, CA | 37 |
| Rosuvastatin Calcium Other prescribers in Santa Clara, CA | 20 |
| Lisinopril Other prescribers in Santa Clara, CA | 15 |
| Metformin Hcl Er (metformin hcl) Other prescribers in Santa Clara, CA | 15 |
| Pantoprazole Sodium Other prescribers in Santa Clara, CA | 14 |
| Furosemide Other prescribers in Santa Clara, CA | 12 |
| Hydralazine Hcl Other prescribers in Santa Clara, CA | 12 |
Prescriptions filled under Medicare Part D, including refills. CMS leaves out drugs prescribed fewer than 11 times.
Payments from drug and device companies
In 2025, 1 companies reported 1 payments worth $19.18 in total to this clinician.
| Exact Sciences Corporation | $19.18 |
|---|
| Food and Beverage | $19.18 |
|---|
From CMS Open Payments. A payment is not evidence of wrongdoing; many are for consulting, teaching or meals. Clinicians can review and dispute their records with CMS.