Dr. Sankar N. Niranjan, MD
Nephrology (Kidney) (Nephrology 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
- 32
- In the NPI registry since
- 2005
- Medicare patients seen, 2024
- 127
Licensed in California since 2024, 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
- 2005Registered with an NPI (national billing number; not a license date) — NPIs began in 2005, so practice likely started earlier
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
-
Nephrology Physician primary
CA license C196910 (first issued 2024; current) -
Internal Medicine Physician
CA license C196910 (first issued 2024; 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
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
- 127
- Services billed
- 186
- Patients’ average age
- 80
| Service | Times | Patients |
|---|---|---|
| Established patient office or other outpatient visit, 30-39 minutes | 222 | 140 |
| Subsequent hospital care with moderate levelof medical decision making, if using time, at least 35 minutes | 218 | 102 |
| Dialysis services, 4 or more physician visits per month (20 years or older) | 139 | 21 |
| Hemodialysis procedure with physician evaluation | 121 | 54 |
| Subsequent hospital care with moderate levelof medical decision making, if using time, at least 50 minutes | 50 | 33 |
| Dialysis procedure including 1 evaluation | 39 | 19 |
| Initial hospital care with moderate level of medical decision making, if using time, at least 75 minutes | 36 | 35 |
| New patient office or other outpatient visit, 45-59 minutes | 29 | 29 |
| Initial hospital care with straightforward or low-level medical decision making, if using time, at least 55 minutes | 19 | 17 |
| Subsequent hospital care with straightforward or low level of medical decision making, per day, if using time, at least 25 minutes | 16 | 14 |
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.
Medicare prescriptions
| Drug | Prescriptions |
|---|---|
| Amlodipine Besylate Other prescribers in Stanford, CA | 104 |
| Farxiga (dapagliflozin propanediol) Other prescribers in Stanford, CA | 78 |
| Calcitriol Other prescribers in Stanford, CA | 65 |
| Spironolactone Other prescribers in Stanford, CA | 40 |
| Torsemide Other prescribers in Stanford, CA | 36 |
| Furosemide Other prescribers in Stanford, CA | 31 |
| Lisinopril Other prescribers in Stanford, CA | 18 |
| Tamsulosin Hcl Other prescribers in Stanford, CA | 15 |
| Potassium Chloride Other prescribers in Stanford, CA | 15 |
| Clinolipid (fat emulsion/olive/soy/phospho) | 15 |
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 2 payments worth $122 in total to this clinician.
| Idorsia Pharmaceuticals US Inc | $122 |
|---|
| Food and Beverage | $122 |
|---|
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.