Provider records sourced from NPPES (CMS National Plan & Provider Enumeration System). Data current as of August 10, 2026.
NPIDirectory

Gregg Atsushi Shimomura, MD

Individual provider Obstetrics & Gynecology Physician · NPI 1538280367

Gregg Atsushi Shimomura, MD practises Obstetrics/Gynecology in Aiea, Hawaii. Graduated from University of Hawaii John A. Burns School of Medicine in 1986, 40 years ago. Accepts Medicare assignment and offers telehealth. Licensed in Hawaii.

Years since qualifying
40
Trained at
University of Hawaii John A. Burns School of Medicine
Licensed in
HI
In the registry since
2007
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

99 128 Aiea Heights Dr Ste 504
Aiea, HI 96701-3938 Not confirmed with CMS for 19 years — call before visiting
Phone: (808) 487-2497
Fax: (808) 487-2494
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Pin is approximate — placed at the ZIP-code centre, not the exact door.

Specialties & licences

Obstetrics & Gynecology Physician (primary) Taxonomy 207V00000X · Licence MD6215 (HI)

Record details

NPI number1538280367
Entity typeIndividual (Type 1)
GenderMale
Credentials MD
Sole proprietorNo
NPI enumeratedApril 2, 2007
Last updated in NPPESJuly 8, 2007

Medicare enrollment

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

Medicare specialtyOBSTETRICS/GYNECOLOGY
Medical schoolUNIVERSITY OF HAWAII JOHN A. BURNS SCHOOL OF MEDICINE
Graduated 1986 (40 years in practice)
Accepts Medicare assignment Yes — accepts the Medicare-approved amount
TelehealthOffers telehealth services

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 patients192
Services billed 414 a service is one billed item, such as a visit, a test or a procedure
Average patient age74

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. Those with a page here are linked.

Other providers in Aiea