Dr. Jonathan H. Chen, MD, PHD
Internal Medicine (Internal Medicine Physician)
300 Pasteur Dr
Stanford, CA 94305
Who else practices at this address →
Santa Clara County includes mental health (13% of residents) shortage areas. About shortage areas
- Medicare participating
At a glance
- Years since graduation
- 15
- In the NPI registry since
- 2011
- Medicare patients seen, 2024
- 52
Licensed in California since 2012, 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
- 2011Registered 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 A122045 (first issued 2012; current)
As reported to the NPI registry. To confirm a license is current, check the state medical board.
Where they work
Hospitals
- Stanford Health Care Stanford, CA
Medical groups
- Stanford Health Care (3,122 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 patients and services
- Medicare patients, 2024
- 52
- Services billed
- 169
- Patients’ average age
- 77
| Service | Times | Patients |
|---|---|---|
| Subsequent hospital care with moderate levelof medical decision making, if using time, at least 35 minutes | 186 | 60 |
| Hospital discharge day management, more than 30 minutes | 47 | 45 |
| Initial hospital care with moderate level of medical decision making, if using time, at least 75 minutes | 39 | 37 |
| Initial hospital care with straightforward or low level of medical decision making, per day, if using time, at least 40 minutes | 14 | 13 |
Medicare fee-for-service only. CMS leaves out services billed for fewer than 11 patients. These figures describe a practice’s Medicare work; they aren’t a measure of quality.
Payments from drug and device companies
In 2025, 1 companies reported 1 payments worth $142 in total to this clinician.
| Curonix LLC | $142 |
|---|
| Food and Beverage | $142 |
|---|
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.