Quick answers
- Does Alexandre Vinaud Hirayama accept Medicare assignment?
- Yes. Medicare's clinician data says Alexandre Vinaud Hirayama 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 Alexandre Vinaud Hirayama see?
- In 2024, CMS data shows 67 Original Medicare patients and 365 services for Alexandre Vinaud Hirayama. This counts Original Medicare only and measures volume, not quality.
- What is Alexandre Vinaud Hirayama's NPI number?
- 1164966883. 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 Alexandre Vinaud Hirayama, 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 | 67 |
|---|---|
| Services billed to Medicare | 365 |
| Different services or procedures | 8 |
| Participating Medicare provider | Yes |
| Average age of these patients | 70 |
Most frequent services
- Subsequent hospital care with moderate levelof medical decision making, if using time, at least 50 minutes (99233)125 services
- Prolonged office or other outpatient evaluation and management service(s) beyond the maximum required time of the primary procedure which has been selected using total time on the date of the primary service; each additional 15 minutes by the physician or (G2212)118 services
- Established patient office or other outpatient visit with high level of medical decision making, if using time, 40 minutes or more (99215)37 services
- Subsequent hospital care with moderate levelof medical decision making, if using time, at least 35 minutes (99232)32 services
- Established patient office or other outpatient visit with moderate level of decision making, if using time, 30 minutes or more (99214)27 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 pressure73%
- High cholesterol58%
- Anxiety42%
- Arthritis37%
- Ischemic heart disease30%
- Chronic kidney disease27%
Hospitals where Alexandre Vinaud Hirayama works
Medicare's Facility Affiliation Data lists Alexandre Vinaud Hirayama 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.
- University of Washington Medical CenterSeattle, WA · Acute Care Hospital · Medicare rating: 4 of 5 stars · Emergency services: not listed by Medicare · CCN 500008
Practice locations
Addresses where Alexandre Vinaud Hirayama is enrolled with Medicare (CMS data updated October 2, 2026).
- 825 Eastlake Ave ESeattle, WA 98109 (206) 288‑1000
Group practices
Medicare enrollment lists Alexandre Vinaud Hirayama as a member of this group (CMS data updated October 2, 2026).
- The Association of University Physicians3,535 clinicians in the group
Specialties
- Hematology/Oncologyprimary
Other hematologist-oncologists in Seattle
Clinicians with the same Medicare primary specialty in Seattle, WA — not a recommendation.
Other clinicians in The Association of University Physicians
Medicare enrollment lists these clinicians in the same group practice — not a recommendation.
Clinician information
| Credential | MD |
|---|---|
| Graduation year | 2006 (20 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) | 1164966883 |
| 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