Quick answers
- Does Sean W. Hayes accept Medicare assignment?
- Yes. Medicare's clinician data says Sean W. Hayes accepts Medicare assignment (the Medicare-approved amount as full payment for covered services), as of October 2, 2026. Ask the office to confirm before your visit.
- How many Medicare patients does Sean W. Hayes see?
- In 2024, CMS data shows 2,268 Original Medicare patients and 4,447 services for Sean W. Hayes. This counts Original Medicare only and measures volume, not quality.
- What is Sean W. Hayes's NPI number?
- 1386771715. The NPI (National Provider Identifier) is the clinician's permanent federal ID; you can look it up in the official NPI Registry.
Medicare activity in 2024
Official CMS public-use data for Sean W. Hayes, data year 2024 (released May 21, 2026). It covers Original Medicare (fee-for-service) patients only, not Medicare Advantage or other insurance. It shows volume, not quality or outcomes. CMS hides any count of 10 or fewer patients.
| Original Medicare patients | 2,268 |
|---|---|
| Services billed to Medicare | 4,447 |
| Different services or procedures | 29 |
| Participating Medicare provider | Yes |
| Average age of these patients | 75 |
Most frequent services
- Exercise or drug-induced heart stress test with electrocardiogram (ecg) with review by physician (93018)1,126 services
- Exercise or drug-induced heart stress test with electrocardiogram (ecg) with supervision by physician (93016)973 services
- Nuclear medicine studies of heart muscle at rest and with stress and spect (78452)678 services
- Nuclear medicine studies of blood flow in heart muscle at rest and with stress (78492)655 services
- Ct scan of blood vessels and grafts of heart with contrast (75574)264 services
Chronic conditions among these patients
Share of this clinician’s Original Medicare patients with each condition, as published by CMS (it describes the patients, not the care given).
- High blood pressure75%
- High cholesterol75%
- Ischemic heart disease75%
- Arthritis57%
- Diabetes44%
- Heart failure35%
Hospitals where Sean W. Hayes works
Medicare's Facility Affiliation Data lists Sean W. Hayes at these hospitals (updated October 2, 2026). Each hospital page shows its address, phone, emergency services, Medicare rating and all its clinicians. Star rating and emergency services: Hospital General Information (CMS), data updated October 26, 2026.
- Cedars-Sinai Medical CenterLos Angeles, CA · Acute Care Hospital · Medicare rating: 5 of 5 stars · Emergency services: listed by Medicare · CCN 050625
- Saint John's Health CenterSanta Monica, CA · Acute Care Hospital · Medicare rating: 4 of 5 stars · Emergency services: listed by Medicare · CCN 050290
Practice locations
Addresses where Sean W. Hayes is enrolled with Medicare (CMS data updated October 2, 2026).
- 8700 Beverly BlvdWest Hollywood, CA 90048 (310) 423‑3277
Group practices
Medicare enrollment lists Sean W. Hayes as a member of this group (CMS data updated October 2, 2026).
- Cedars-Sinai Medical Center799 clinicians in the group
Specialties
Find other Cardiovascular Disease (Cardiology) doctors in California →
Other cardiologists in West Hollywood
Clinicians with the same Medicare primary specialty in West Hollywood, CA — not a recommendation.
Other clinicians in Cedars-Sinai Medical Center
Medicare enrollment lists these clinicians in the same group practice — not a recommendation.
Clinician information
| Credential | MD |
|---|---|
| Medical school | University Of California, San Francisco School Of Medicine |
| Graduation year | 1993 (33 years since medical school) |
| Gender (as listed) | Male |
| Medicare assignment | Accepts (Medicare-approved amount as full payment) |
| NPI (National Provider Identifier) | 1386771715 |
| 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 October 2, 2026, retrieved October 29, 2026
- Hospital General Information — CMS, data updated October 26, 2026, retrieved November 13, 2026
- National Downloadable File (Doctors and Clinicians) — CMS, data updated October 2, 2026, retrieved October 29, 2026
- Medicare Physician & Other Practitioners - by Provider — CMS, data year 2024, released May 21, 2026; Medicare Physician & Other Practitioners - by Provider and Service
- 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