Dr. Leon Lenchik, MD
Radiology (Diagnostic Radiology 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
- Medical school
- Northwestern University Feinberg Medical School (1990)
- Years since graduation
- 36
- In the NPI registry since
- 2005
- Medicare patients seen, 2024
- 2,074
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. NPIs were first issued in May 2005 and became required on claims in 2007–2008, so an early date usually means the clinician was already in practice before then. What an NPI is
Education and training
- 1990Medical school: Northwestern University Feinberg Medical School
- 2005Registered with an NPI (national billing number; not a license date) — NPIs began in 2005, so practice likely started earlier
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
-
Diagnostic Radiology Physician primary
CA license G80571 (first issued 2025; 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
- Stanford Health Care Tri-Valley Pleasanton, CA
- El Camino Health Mountain View, 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
- 2,074
- Services billed
- 3,460
- Patients’ average age
- 73
| Service | Times | Patients |
|---|---|---|
| X-ray of knee, 3 views | 637 | 571 |
| X-ray of shoulder, minimum of 2 views | 480 | 411 |
| X-ray of hip, 2-3 views | 414 | 387 |
| X-ray of pelvis, 1-2 views | 257 | 241 |
| X-ray of knee, 1-2 views | 239 | 215 |
| Dxa bone density measurement of hip, pelvis, spine | 226 | 226 |
| X-ray of foot, minimum of 3 views | 209 | 191 |
| X-ray of hand, minimum of 3 views | 161 | 141 |
| X-ray of ankle, minimum of 3 views | 153 | 141 |
| X-ray of lower and sacral spine, 2-3 views | 135 | 132 |
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 $107 in total to this clinician.
| GE Healthcare | $107 |
|---|
| Food and Beverage | $107 |
|---|
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.