Quick answers
- Does William L. Van Der Reis accept Medicare assignment?
- Yes. Medicare's clinician data says William L. Van Der Reis 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 William L. Van Der Reis see?
- In 2024, CMS data shows 209 Original Medicare patients and 1,551 services for William L. Van Der Reis. This counts Original Medicare only and measures volume, not quality.
- What is William L. Van Der Reis's NPI number?
- 1710911078. 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 William L. Van Der Reis, 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 | 209 |
|---|---|
| Services billed to Medicare | 1,551 |
| Different services or procedures | 67 |
| Participating Medicare provider | Yes |
| Average age of these patients | 74 |
Most frequent services
- Injection, triamcinolone acetonide, not otherwise specified, 10 mg (J3301)281 services
- Established patient office or other outpatient visit with low level od decision making, if using time, 20 minutes or more (99213)152 services
- Aspiration and/or injection of fluid from large joint (20610)94 services
- New patient office or other outpatient visit with low level of medical decision making, if using time, 30 minutes or more (99203)85 services
- X-ray of knee, 4 or more views (73564)19 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%
- High blood pressure71%
- Arthritis67%
- Diabetes27%
- Ischemic heart disease22%
- Chronic kidney disease20%
Hospitals where William L. Van Der Reis works
Medicare's Facility Affiliation Data lists William L. Van Der Reis 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.
- Kuakini Medical CenterHonolulu, HI · Acute Care Hospital · Medicare rating: 4 of 5 stars · Emergency services: listed by Medicare · CCN 120007
- North Hawaii Community Hospital, IncKamuela, HI · Acute Care Hospital · Medicare rating: 3 of 5 stars · Emergency services: listed by Medicare · CCN 120028
- The Queens Medical CenterHonolulu, HI · Acute Care Hospital · Medicare rating: 3 of 5 stars · Emergency services: listed by Medicare · CCN 120001
Practice locations
Addresses where William L. Van Der Reis is enrolled with Medicare (CMS data updated October 2, 2026).
- 3382 Waialae AveHonolulu, HI 96816 (808) 548‑7033
- 91 -2135 Fort Weaver Rd, Fl 4Ewa Beach, HI 96706 (808) 691‑3520
Group practices
Medicare enrollment lists William L. Van Der Reis as a member of this group (CMS data updated October 2, 2026).
- Island Orthopaedics, LLC12 clinicians in the group
Specialties
- Sports Medicineprimary
Other sports medicine doctors in Honolulu
Clinicians with the same Medicare primary specialty in Honolulu, HI — not a recommendation.
Other clinicians in Island Orthopaedics, LLC
Medicare enrollment lists these clinicians in the same group practice — not a recommendation.
Clinician information
| Credential | MD |
|---|---|
| Medical school | Js Weill Medical College, Cornell University |
| 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) | 1710911078 |
| 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