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Internal Medicine

Leon P. Garcia Iii, MD

Works at hospitals in Aiea, HI · Honolulu, HI · Hawaii

Summary

Dr. Leon P. Garcia Iii, MD is an internal medicine doctor at 94-307 Farrington Hwy, Suite B6, Waipahu, HI 96797. Phone: (808) 671-9433. Accepts Medicare assignment. In 2024, Leon P. Garcia Iii had 125 Original Medicare patients and 374 services. NPI 1164521167. 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: 94-307 Farrington Hwy, Suite B6, Waipahu, HI 96797 · Directions (1 more location)
  • Phone: (808) 671‑9433
  • Medicare: Accepts Medicare assignment
  • Hospitals: Pali Momi Medical Center, The Queens Medical Center
  • Medical school: University Of Hawaii John A. Burns School Of Medicine · graduated 1983 (43 years since medical school)
  • Gender (as listed): Male

From official Medicare data

This page shows what Medicare's official clinician data says about Leon P. Garcia Iii, 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 Leon P. Garcia Iii accept Medicare assignment?
Yes. Medicare's clinician data says Leon P. Garcia Iii 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 Leon P. Garcia Iii see?
In 2024, CMS data shows 125 Original Medicare patients and 374 services for Leon P. Garcia Iii. This counts Original Medicare only and measures volume, not quality.
What is Leon P. Garcia Iii's NPI number?
1164521167. 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 Leon P. Garcia Iii, 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 patients125
Services billed to Medicare374
Different services or procedures2
Participating Medicare providerYes
Average age of these patients76

Most frequent services

  1. Established patient office or other outpatient visit with straightforward medical decision making, if using time, 10 minutes or more (99212)264 services
  2. Established patient office or other outpatient visit with low level od decision making, if using time, 20 minutes or more (99213)110 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%
  • Diabetes32%
  • Arthritis27%
  • Chronic kidney disease22%
  • Atrial fibrillation20%

Hospitals where Leon P. Garcia Iii works

Medicare's Facility Affiliation Data lists Leon P. Garcia Iii 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.

  • Pali Momi Medical CenterAiea, HI · Acute Care Hospital · Medicare rating: 4 of 5 stars · Emergency services: listed by Medicare · CCN 120026
  • 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 Leon P. Garcia Iii is enrolled with Medicare (CMS data updated October 2, 2026).

  • 94-307 Farrington Hwy, Suite B6Waipahu, HI 96797 (808) 671‑9433
  • 94-307 Farrington Hwy B6Waipahu, HI 96797

Specialties

Find other Internal Medicine doctors in Hawaii →

Other internal medicine doctors in Waipahu

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

All internal medicine doctors in Waipahu →

Clinician information

CredentialMD
Medical schoolUniversity Of Hawaii John A. Burns School Of Medicine
Graduation year1983 (43 years since medical school)
Gender (as listed)Male
Medicare assignmentAccepts (Medicare-approved amount as full payment)
NPI (National Provider Identifier)1164521167
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