Quick answers
- Does Lloyd Miyawaki accept Medicare assignment?
- Yes. Medicare's clinician data says Lloyd Miyawaki 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 Lloyd Miyawaki see?
- In 2024, CMS data shows 157 Original Medicare patients and 3,481 services for Lloyd Miyawaki. This counts Original Medicare only and measures volume, not quality.
- What is Lloyd Miyawaki's NPI number?
- 1497737464. 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 Lloyd Miyawaki, 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 | 157 |
|---|---|
| Services billed to Medicare | 3,481 |
| Different services or procedures | 19 |
| Participating Medicare provider | Yes |
| Average age of these patients | 77 |
Most frequent services
- Ct guidance for insertion of radiation therapy fields (77014)1,530 services
- Calculation of radiation therapy dose (77300)636 services
- Design and construction of complex radiation treatment device (77334)309 services
- Radiation treatment management, 5 treatment sessions (77427)297 services
- Established patient office or other outpatient visit with high level of medical decision making, if using time, 40 minutes or more (99215)124 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 cholesterol75%
- Cancer (breast, colorectal, lung, prostate, endometrial or leukemia/lymphoma)75%
- High blood pressure74%
- Arthritis39%
- Ischemic heart disease36%
- Atrial fibrillation28%
Hospitals where Lloyd Miyawaki works
Medicare's Facility Affiliation Data lists Lloyd Miyawaki 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.
- Marinhealth Medical CenterGreenbrae, CA · Acute Care Hospital · Medicare rating: 5 of 5 stars · Emergency services: listed by Medicare · CCN 050360
- Novato Community HospitalNovato, CA · Acute Care Hospital · Medicare rating: 5 of 5 stars · Emergency services: listed by Medicare · CCN 050131
- Sonoma Valley HospitalSonoma, CA · Acute Care Hospital · Medicare rating: 2 of 5 stars · Emergency services: listed by Medicare · CCN 050090
- UCSF Medical CenterSan Francisco, CA · Acute Care Hospital · Medicare rating: 4 of 5 stars · Emergency services: listed by Medicare · CCN 050454
Practice locations
Addresses where Lloyd Miyawaki is enrolled with Medicare (CMS data updated October 2, 2026).
- 1350 S Eliseo Dr, Suite 200Greenbrae, CA 94904 (415) 925‑5000
Group practices
Medicare enrollment lists Lloyd Miyawaki as a member of this group (CMS data updated October 2, 2026).
- Marin Cancer Care, Inc.13 clinicians in the group
Specialties
- Radiation Oncologyprimary
Other radiation oncologists in Greenbrae
Clinicians with the same Medicare primary specialty in Greenbrae, CA — not a recommendation.
Other clinicians in Marin Cancer Care, Inc.
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) |
| Telehealth | Offers telehealth services |
| NPI (National Provider Identifier) | 1497737464 |
| 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