Dr. Ryan A. Brown, MD
Cardiology (Cardiovascular Disease Physician)
106 La Casa Via Ste 140
Walnut Creek, CA 94598
Who else practices at this address →
Contra Costa County includes mental health (19% of residents) shortage areas. About shortage areas
- Medicare participating
At a glance
- Medical school
- Northwestern University Feinberg Medical School (2001)
- Years since graduation
- 25
- In the NPI registry since
- 2006
- Medicare patients seen, 2024
- 2,517
Licensed in California since 2003, 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
- 2001Medical school: Northwestern University Feinberg Medical School
- 2006Registered 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
-
Cardiovascular Disease Physician primary
CA license A84824 (first issued 2003; current) -
Internal Medicine Physician
CA license A84824 (first issued 2003; current) -
Interventional Cardiology Physician
CA license A84824 (first issued 2003; current) -
Nuclear Cardiology Physician
CA license A84824 (first issued 2003; 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 Tri-Valley Pleasanton, CA
- John Muir Medical Center - Walnut Creek Campus Walnut Creek, CA
- John Muir Medical Center - Concord Campus Concord, CA
- Sutter Delta Medical Center Antioch, CA
- San Ramon Regional Medical Center San Ramon, CA
Medical groups
- John Muir Physician Network (494 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
- 2,517
- Services billed
- 7,664
- Patients’ average age
- 77
| Service | Times | Patients |
|---|---|---|
| Established patient office or other outpatient visit, 30-39 minutes | 986 | 632 |
| Routine electrocardiogram (ecg) using at least 12 leads with interpretation and report only | 853 | 739 |
| Routine electrocardiogram (ecg) using at least 12 leads with interpretation and report | 580 | 506 |
| Ultrasound of heart with color-depicted blood flow, rate, direction and valve function | 566 | 547 |
| Injection, regadenoson, 0.1 mg | 526 | 133 |
| Interrogation device evaluation(s), (remote) up to 30 days; implantable cardiovascular physiologic monitor system, implantable loop recorder system, or subcutaneous cardiac rhythm monitor system, remote data acquisition(s), receipt of transmissions and tec | 433 | 115 |
| Evaluation of implantable heart and blood vessel monitoring system, remote up to 30 days | 398 | 105 |
| Subsequent hospital care with moderate levelof medical decision making, if using time, at least 35 minutes | 385 | 148 |
| Established patient office or other outpatient visit, 40-54 minutes | 335 | 223 |
| Technetium tc-99m sestamibi, diagnostic, per study dose | 264 | 136 |
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, 20 companies reported 85 payments worth $1,775 in total to this clinician.
| Food and Beverage | $1,775 |
|---|
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.