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Internal Medicine

Ryan S. Fusato, MD

Works at hospitals in Wailuku, HI · Hawaii

Summary

Dr. Ryan S. Fusato, MD is an internal medicine doctor at 2180 Main St, Wailuku, HI 96793. Phone: (808) 242-6464. Accepts Medicare assignment. In 2024, Ryan S. Fusato had 460 Original Medicare patients and 1,672 services. NPI 1578580296. Source: CMS National Downloadable File, updated October 2, 2026; CMS Facility Affiliation Data, updated October 2, 2026; CMS Medicare Physician & Other Practitioners, data year 2024.

  • Specialty: Internal medicine doctor (Medicare lists Internal Medicine)
  • Address: 2180 Main St, Wailuku, HI 96793 · Directions
  • Phone: (808) 242‑6464
  • Medicare: Accepts Medicare assignment
  • Hospital: Maui Memorial Medical Center
  • Group practice: Maui Medical Group Inc
  • Medical school: University Of Hawaii John A. Burns School Of Medicine · graduated 1998 (28 years since medical school)
  • Gender (as listed): Male
  • Telehealth: offered

From official Medicare data

This page shows what Medicare's official clinician data says about Ryan S. Fusato, joined by NPI number (data updated October 2, 2026). It is not a recommendation or a rating. Call the office or hospital to confirm before you go.

In a medical emergency, call 911.

Quick answers

Does Ryan S. Fusato accept Medicare assignment?
Yes. Medicare's clinician data says Ryan S. Fusato 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 Ryan S. Fusato see?
In 2024, CMS data shows 460 Original Medicare patients and 1,672 services for Ryan S. Fusato. This counts Original Medicare only and measures volume, not quality.
What is Ryan S. Fusato's NPI number?
1578580296. 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 Ryan S. Fusato, 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 patients460
Services billed to Medicare1,672
Different services or procedures36
Participating Medicare providerYes
Average age of these patients75

Most frequent services

  1. Established patient office or other outpatient visit with moderate level of decision making, if using time, 30 minutes or more (99214)701 services
  2. Annual wellness visit, includes a personalized prevention plan of service (pps), subsequent visit (G0439)256 services
  3. Management using the results of remote vital sign monitoring per calendar month, each additional 20 minutes (99458)148 services
  4. Established patient office or other outpatient visit with low level od decision making, if using time, 20 minutes or more (99213)104 services
  5. Management using the results of remote vital sign monitoring per calendar month, first 20 minutes (99457)68 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 pressure68%
  • Diabetes28%
  • Chronic kidney disease26%
  • Arthritis25%
  • Ischemic heart disease18%

Hospitals where Ryan S. Fusato works

Medicare's Facility Affiliation Data lists Ryan S. Fusato 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.

  • Maui Memorial Medical CenterWailuku, HI · Acute Care Hospital · Medicare rating: 2 of 5 stars · Emergency services: not listed by Medicare · CCN 120002

Practice locations

Addresses where Ryan S. Fusato is enrolled with Medicare (CMS data updated October 2, 2026).

Group practices

Medicare enrollment lists Ryan S. Fusato as a member of this group (CMS data updated October 2, 2026).

  • Maui Medical Group Inc67 clinicians in the group

Specialties

Find other Internal Medicine doctors in Hawaii →

Other internal medicine doctors in Wailuku

Clinicians with the same Medicare primary specialty in Wailuku, HI — not a recommendation.

All internal medicine doctors in Wailuku →

Other clinicians in Maui Medical Group Inc

Medicare enrollment lists these clinicians in the same group practice — not a recommendation.

Clinician information

CredentialMD
Medical schoolUniversity Of Hawaii John A. Burns School Of Medicine
Graduation year1998 (28 years since medical school)
Gender (as listed)Male
Medicare assignmentAccepts (Medicare-approved amount as full payment)
TelehealthOffers telehealth services
NPI (National Provider Identifier)1578580296
CorrectionsReport 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

  1. Facility Affiliation Data — Centers for Medicare & Medicaid Services (CMS), data updated October 2, 2026, retrieved October 29, 2026
  2. Hospital General Information — CMS, data updated October 26, 2026, retrieved November 13, 2026
  3. National Downloadable File (Doctors and Clinicians) — CMS, data updated October 2, 2026, retrieved October 29, 2026
  4. Medicare Physician & Other Practitioners - by Provider — CMS, data year 2024, released May 21, 2026; Medicare Physician & Other Practitioners - by Provider and Service
  5. NPI Registry — U.S. Department of Health and Human Services (NPPES), the clinician’s official record
  6. Medicare Care Compare — official Medicare tool to look up clinicians