Dr. Ranjan Ray, MD PHD
Heart Failure & Transplant Cardiology (Advanced Heart Failure and Transplant Cardiology Physician)
- Medicare participating
At a glance
- Years since graduation
- 20
- In the NPI registry since
- 2008
- Medicare patients seen, 2024
- 369
Licensed in California since 2009, 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
- 2008Registered 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
-
Advanced Heart Failure and Transplant Cardiology Physician primary
CA license A108532 (first issued 2009; current) -
Cardiovascular Disease Physician
CA license A108532 (first issued 2009; current) -
Internal Medicine Physician
MA license 228223
As reported to the NPI registry. To confirm a license is current, check the state medical board.
Map: Heart Failure & Transplant Cardiology per capita by county →
Where they work
Hospitals
- Sutter Medical Center, Sacramento Sacramento, CA
- California PAcific Medical Center- Van Ness Campus San Francisco, CA
- Peninsula Medical Center Burlingame, CA
- Alta Bates Summit Medical Center Oakland, CA
- Novato Community Hospital Novato, CA
Medical groups
- Sutter Bay Medical Foundation (3,829 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
- 369
- Services billed
- 1,938
- Patients’ average age
- 74
| Service | Times | Patients |
|---|---|---|
| Critical care, first 30-74 minutes | 304 | 43 |
| Evaluation of lower heart chamber assist device | 275 | 49 |
| Subsequent hospital care with moderate levelof medical decision making, if using time, at least 50 minutes | 261 | 52 |
| Established patient office or other outpatient visit, 30-39 minutes | 229 | 115 |
| Ultrasound of heart with color-depicted blood flow, rate, direction and valve function | 162 | 141 |
| Established patient office or other outpatient visit, 40-54 minutes | 159 | 91 |
| Routine electrocardiogram (ecg) using at least 12 leads with interpretation and report | 99 | 98 |
| New patient office or other outpatient visit, 60-74 minutes | 31 | 31 |
| Initial hospital care with moderate level of medical decision making, if using time, at least 75 minutes | 29 | 24 |
| 3d radiographic procedure | 17 | 16 |
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
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, 7 companies reported 8 payments worth $323 in total to this clinician.
| Abiomed | $123 |
|---|---|
| Baxter Healthcare | $44.27 |
| Paragonix Technologies, Inc. | $43.88 |
| Pfizer Inc. | $30.62 |
| Alnylam Pharmaceuticals Inc. | $28.30 |
| Novartis Pharmaceuticals Corporation | $26.93 |
| AstraZeneca Pharmaceuticals LP | $25.87 |
| Food and Beverage | $323 |
|---|
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.