Quick answers
- Which hospitals does Ryan A. Brown work at?
- Medicare's official clinician data lists Ryan A. Brown at 5 hospitals: John Muir Medical Center - Concord Campus, John Muir Medical Center - Walnut Creek Campus, San Ramon Regional Medical Center, Stanford Health Care Tri-Valley and Sutter Delta Medical Center. This is where the clinician works or has privileges; call the hospital to confirm.
- Where does Ryan A. Brown see patients?
- Medicare's clinician data lists 2 practice locations, including Walnut Creek, CA and Concord, CA. Call before your visit to confirm the address.
- What is Ryan A. Brown's specialty?
- Medicare lists Cardiovascular Disease (Cardiology) as the primary specialty, and also Internal Medicine, Interventional Cardiology and Nuclear Medicine.
- Does Ryan A. Brown accept Medicare assignment?
- Yes. Medicare's clinician data says Ryan A. Brown accepts Medicare assignment (the Medicare-approved amount as full payment for covered services), as of 2026-10-02. Ask the office to confirm before your visit.
- Does Ryan A. Brown offer telehealth?
- Medicare's clinician data says Ryan A. Brown offers telehealth services. Ask the office which visits can be done by video or phone.
- What is the phone number for Ryan A. Brown?
- (925) 937-1770, as listed in official Medicare / NPI Registry data.
- What is Ryan A. Brown's NPI number?
- 1467425439. The NPI (National Provider Identifier) is the clinician's permanent federal ID; you can look it up in the official NPI Registry.
Hospitals where Ryan A. Brown works
Medicare's Facility Affiliation Data lists Ryan A. Brown at these hospitals (updated 2026-10-02). Each hospital page shows its address, phone, emergency services, Medicare rating and all its clinicians.
- John Muir Medical Center - Concord CampusConcord, CA · Acute Care Hospital · CCN 050496
- John Muir Medical Center - Walnut Creek CampusWalnut Creek, CA · Acute Care Hospital · CCN 050180
- San Ramon Regional Medical CenterSan Ramon, CA · Acute Care Hospital · CCN 050689
- Stanford Health Care Tri-ValleyPleasanton, CA · Acute Care Hospital · CCN 050283
- Sutter Delta Medical CenterAntioch, CA · Acute Care Hospital · CCN 050523
Practice locations
Addresses where Ryan A. Brown is enrolled with Medicare (CMS data updated 2026-10-02).
- 1450 Treat Blvd, Suite 220bWalnut Creek, CA 94597 (925) 937‑1770
- 2700 Grant St, Suite 106Concord, CA 94520 (925) 685‑7598
Group practices
Medicare enrollment lists Ryan A. Brown as a member of this group (CMS data updated 2026-10-02).
- John Muir Physician Network494 clinicians in the group
Specialties
- Cardiovascular Disease (Cardiology)primary
- Internal Medicinealso
- Interventional Cardiologyalso
- Nuclear Medicinealso
Find other Cardiovascular Disease (Cardiology) doctors in California →
Other cardiologists in Walnut Creek
Clinicians with the same Medicare primary specialty in Walnut Creek, CA — not a recommendation.
Clinician information
| Credential | MD |
|---|---|
| Medical school | Northwestern University Feinberg Medical School |
| Graduation year | 2001 |
| Gender (as listed) | Male |
| Medicare assignment | Accepts (Medicare-approved amount as full payment) |
| Telehealth | Offers telehealth services |
| NPI (National Provider Identifier) | 1467425439 |
| Corrections | Report an error or suggest an update → |
Most corrections must be made at the source: clinicians update their NPI Registry record (NPPES) and their Medicare enrollment (PECOS); this page follows the next data release.
Sources
- Facility Affiliation Data — Centers for Medicare & Medicaid Services (CMS), data updated 2026-10-02, retrieved 2026-10-29
- National Downloadable File (Doctors and Clinicians) — CMS, data updated 2026-10-02, retrieved 2026-10-29
- NPI Registry — U.S. Department of Health and Human Services (NPPES), the clinician’s official record
- Medicare Care Compare — official Medicare tool to look up clinicians