Gregg Atsushi Shimomura, MD
Obstetrics & Gynecology Physician · Aiea, HI
Gregg Atsushi Shimomura, MD is an obstetrics & gynecology physician with a practice address in Aiea, Hawaii, and NPI 1538280367, issued on Apr 2, 2007. Check the license (Hawaii MD6215, as entered in NPPES) on the Hawaii Medical Board; the Medicare figures below come from public CMS files.
- Name
- Gregg Atsushi Shimomura
- Credential
- MD
- Primary taxonomy
- Obstetrics & Gynecology Physician 207V00000X
- License number
- MD6215 HI
Self-reported in NPPES; status is on the state search - Practice location
- 99 128 Aiea Heights Drive, Aiea, HI 96701
- Phone
- (808) 487-2497
- Enumerated
- Apr 2, 2007
- Record last updated
- Jul 8, 2007 (not updated in 19 years: call before relying on the address or phone)
- Fax
- (808) 487-2494
- Medicaid ID
- 05906901 HI
- Medicare enrollment
- Enrolled (PECOS I20060104001028); accepts Medicare assignment
- Medical or professional school
- University Of Hawaii John A. Burns School Of Medicine, 1986
- Telehealth
- Offers telehealth (CMS)
- Entity
- Type 1 · individual
8 nearest obstetrics & gynecology physician records → All 288 in Hawaii → Look up another NPI →
Also registered at 99 128 Aiea Heights Drive
A shared address usually means a shared clinic or building; it does not show who employs whom.
- George Shimomura, MDGynecology Physician1528283397
Verify Gregg Atsushi Shimomura in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersHawaii Medical Board
Search for license MD6215Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
23% more Medicare Part D claims than the average obstetrics & gynecology physician in 2024
203 Medicare Part D claims for 86 beneficiaries, against an average of 165 among the 28,733 providers of this specialty who prescribed in Part D. Brand-name drugs were 27% of claims.
Most prescribed
- Prolia41 claims
- Alendronate Sodium35 claims
- Clotrimazole-Betamethasone28 claims
- Estradiol19 claims
- Risedronate Sodium14 claims
Source: CMS Medicare Part D Prescribers by Provider and Drug, 2024 (data.cms.gov). Part D covers prescriptions for Medicare patients only; drugs with fewer than 11 claims are not published.
Industry payments in 2024: $42.87
2 payments; by number, the most common kind was food and beverage; the largest payer was Amgen Inc. The 21,429 providers of this specialty with any payment received $1,030.61 on average. Payments are reported by manufacturers, not by the provider, and are not a sign of wrongdoing.
Source: CMS Open Payments, program year 2024 (openpaymentsdata.cms.gov); average among providers of this specialty with at least one payment.
Gregg Atsushi Shimomura among 288 obstetrics & gynecology physician records in Hawaii
Gregg Atsushi Shimomura, MD is one of 288 obstetrics & gynecology physician records with a practice address in Hawaii. 67% of them appear in a Medicare file (Part D prescribing, MIPS, Open Payments or Medicare group billing); this one does. Its NPI, issued in 2007, is newer than 42% of them.
- NPI issued2007 · 42% of these records are older, 43% newer
- In a Medicare fileYes · 67% of these records are
- In the CMS Doctors and Clinicians fileYes · 55% of these records are
- Graduated1986 · median 2006 among the 158 with a school on file
- Record last updated2007 · 64% of these records were not updated in five years or more
Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 207V00000X and a Hawaii practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
Obstetrics & Gynecology Physician providers in Hawaii
There are 288 obstetrics & gynecology physician records in Hawaii.
All 288 in Hawaii → Every provider in Aiea → Obstetrics & Gynecology Physician nationwide →
The 8 obstetrics & gynecology physician records with the nearest ZIP codes
- Ronald Ayabe, MDAiea, HI 967011376507624
- Mikiko Bunn, M.D.Aiea, HI 967011952495319
- Kaitlynn Ebisutani, MDAiea, HI 967011356965347
- Jan Fujita, M.D.Aiea, HI 967011316055726
- Kasey Kajiwara, M.D.Aiea, HI 967011689019895
- Stephen Sung, M.D.Aiea, HI 967011932494812
- Leticia Diniega, MDEwa Beach, HI 967061356412944
- Richard Oh, M.D.Ewa Beach, HI 967061487704516
Common questions
What is Gregg Atsushi Shimomura, MD's NPI number?
Gregg Atsushi Shimomura, MD's National Provider Identifier (NPI) is 1538280367, issued on Apr 2, 2007. An NPI identifies a provider in billing; it is not a license.
Where is Gregg Atsushi Shimomura, MD located?
The NPPES record lists a practice address at 99 128 Aiea Heights Drive, Aiea, HI, 96701. Phone: (808) 487-2497. Providers update this record themselves, so call before visiting.
How can I verify Gregg Atsushi Shimomura, MD's license?
NPPES lists Hawaii license number MD6215, as entered by the provider. Search the Hawaii Medical Board at https://cca.hawaii.gov/pvl/boards/medical/. The NPPES record confirms identity only; the state search shows license status, expiration and public orders.
How much does Gregg Atsushi Shimomura, MD prescribe under Medicare Part D?
In 2024, Gregg Atsushi Shimomura, MD had 203 Medicare Part D claims for 86 beneficiaries; the average among obstetrics & gynecology physician prescribers was 165. Part D covers Medicare prescriptions only.
Source: CMS National Plan and Provider Enumeration System (NPPES), file of Aug 9, 2026 (NPPES files on CMS.gov); NUCC Health Care Provider Taxonomy. Medicare files from data.cms.gov. An NPI identifies who bills; it is not a license.
Figures on PlainDoctor are read from the federal files each page names (CMS NPPES, Medicare Part D, MIPS, Open Payments; the HHS-OIG exclusion list only as counts) and from Census population estimates, with the file date shown beside them. See our editorial standards & corrections policy, the methodology behind these numbers, or report a data error. Data current as of Aug 9, 2026.