Provider records sourced from NPPES (CMS National Plan & Provider Enumeration System). Data current as of October 4, 2026.
NPIDirectory

Gary W Ahn, MD

Individual provider Sports Medicine (Internal Medicine) Physician · NPI 1639260441

Gary W Ahn, MD is a Hospitalist in Honolulu, Hawaii. Qualified in 1988, 38 years ago. Practices with Queens University Medical Group, a 623-clinician group and accepts Medicare assignment. Licensed in Hawaii.

Years since qualifying
38
Licensed in
HI
In the registry since
2006
What do these letters mean?
MD — Doctor of Medicine
A physician who completed allopathic medical school.

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Practice location Address checks out

377 Keahole St
Honolulu, HI 96825-3405 Not confirmed with CMS for 19 years — call before visiting
Phone: (808) 396-6675
Fax: (808) 395-2104
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Pin is approximate — placed at the ZIP-code centre, not the exact door.

Specialties & licences

Sports Medicine (Internal Medicine) Physician (primary) Taxonomy 207RS0010X · Licence MD7115 (HI)

Record details

NPI number1639260441
Entity typeIndividual (Type 1)
GenderMale
Credentials MD
Sole proprietorNo
NPI enumeratedSeptember 27, 2006
Last updated in NPPESJuly 8, 2007

Medicare enrollment

From the CMS Doctors & Clinicians file — this clinician is enrolled in Medicare.

Medicare specialtyHOSPITALIST
Medical schoolOTHER
Graduated 1988 (38 years in practice)
Group practice Queens University Medical Group — 623 clinicians
Accepts Medicare assignment Yes — accepts the Medicare-approved amount
Practice locations2 on file with Medicare

Medicare patients and services, 2024

From the CMS Medicare Physician & Other Practitioners file for calendar year 2024. It counts Original Medicare patients only, so a practice that mostly sees Medicare Advantage or privately insured patients looks smaller here than it is.

Medicare patients82
Services billed 437 a service is one billed item, such as a visit, a test or a procedure
Average patient age76

Dollar amounts are not shown. What Medicare pays a practice is gross billings, before staff, premises and tax and including the cost of any drugs it administers, so it is not what a clinician earns.

Practises at

Facilities the CMS Facility Affiliation file lists for this clinician.

Colleagues at Queens University Medical Group

Clinicians the CMS Doctors & Clinicians file lists under the same group practice. CMS counts 623 clinicians in the practice; 12 are shown here.

Other providers in Honolulu