Quick answers
- Does Philip Y. Chyu accept Medicare assignment?
- Yes. Medicare's clinician data says Philip Y. Chyu 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 Philip Y. Chyu see?
- In 2024, CMS data shows 2,502 Original Medicare patients and 4,468 services for Philip Y. Chyu. This counts Original Medicare only and measures volume, not quality.
- What is Philip Y. Chyu's NPI number?
- 1588656847. 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 Philip Y. Chyu, 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 | 2,502 |
|---|---|
| Services billed to Medicare | 4,468 |
| Different services or procedures | 186 |
| Participating Medicare provider | Yes |
| Average age of these patients | 78 |
Most frequent services
- X-ray of chest, 1 view (71045)843 services
- Ct scan head or brain without contrast (70450)336 services
- Screening mammography (77067)318 services
- Screening 3d breast mammography (77063)273 services
- Ct scan of abdomen and pelvis without contrast (74176)132 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%
- Arthritis50%
- Ischemic heart disease33%
- Diabetes28%
- Chronic kidney disease28%
Hospitals where Philip Y. Chyu works
Medicare's Facility Affiliation Data lists Philip Y. Chyu 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.
- Desert Regional Medical CenterPalm Springs, CA · Acute Care Hospital · Medicare rating: 2 of 5 stars · Emergency services: listed by Medicare · CCN 050243
- El Camino HealthMountain View, CA · Acute Care Hospital · Medicare rating: 4 of 5 stars · Emergency services: listed by Medicare · CCN 050308
- NorthBay Medical CenterFairfield, CA · Acute Care Hospital · Medicare rating: 2 of 5 stars · Emergency services: listed by Medicare · CCN 050367
- San Ramon Regional Medical CenterSan Ramon, CA · Acute Care Hospital · Medicare rating: 4 of 5 stars · Emergency services: listed by Medicare · CCN 050689
- UCI Health-OrangeOrange, CA · Acute Care Hospital · Medicare rating: 4 of 5 stars · Emergency services: listed by Medicare · CCN 050348
Practice locations
Addresses where Philip Y. Chyu is enrolled with Medicare (CMS data updated October 2, 2026).
- 3294 N Bridgepointe LnDublin, CA 94568 (818) 639‑2901
- 6001 Norris Canyon RdSan Ramon, CA 94583 (408) 866‑4075
- 625 Lincoln AveSan Jose, CA 95126 (408) 871‑3400
Group practices
Medicare enrollment lists Philip Y. Chyu as a member of these groups (CMS data updated October 2, 2026).
- Golden State Imaging Associates Inc239 clinicians in the group
- El Camino Health Medical Network LLC202 clinicians in the group
- Silicon Valley Diagnostic Imaging Inc76 clinicians in the group
Specialties
- Diagnostic Radiologyprimary
Other radiologists in California
Clinicians with the same Medicare primary specialty in California — not a recommendation.
Other clinicians in Golden State Imaging Associates Inc
Medicare enrollment lists these clinicians in the same group practice — not a recommendation.
Clinician information
| Credential | MD |
|---|---|
| Medical school | Saint Louis University School Of Medicine |
| Graduation year | 1995 (31 years since medical school) |
| Gender (as listed) | Male |
| Medicare assignment | Accepts (Medicare-approved amount as full payment) |
| NPI (National Provider Identifier) | 1588656847 |
| 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