Dr. Gregg A. Shimomura
- Gender: Male
- Experience: 35 years
- Graduated from: University Of Hawaii John A. Burns School Of Medicine
- Graduation year: 1986
- Sole propriator: No
- NPI: 1538280367
Dr. Gregg A. Shimomura MD
Obstetrician and Gynecologist
He is located at 99 128 Aiea Heights Drive Suite 504 in Aiea, HI 96701. Can help patients with the following: Birth Control Counseling, Miscarriage, Pelvic Pain, Placenta Previa, Trichomoniasis, Urinary Retention. His National Provider Identifier (NPI) number is 1538280367. Appointment can be made via the phone number (808) 487-2497. He is affiliated with 2 hospitals.
Conditions treated
Dr. Gregg Atsushi Shimomura, being an obstetrician and gynecologist, treats the following conditions. Please be advised that this list may not be complete. For the full list of conditions treated, consult directly with Dr. Gregg A. Shimomura.
- Amenorrhea
- Bacterial Vaginosis
- Birth Control Counseling
- Blood in Urine
- Braxton Hicks Contractions
- Breast Cancer
- Breastfeeding
- Breastfeeding and Lactation
- Cancer
- Cervical Cancer
- Cervical Intraepithelial Neoplasia (CIN)
- Chlamydia
- Ectopic Pregnancy
- Endometriosis
- Fibrocystic Breast Disease
- Gestational Diabetes
- Group B Streptococcal Infection (GBS)
- Gynecological Exam
- High Blood Pressure
- Hot Flashes
- Human Papillomavirus (HPV)
- Infertility
- Labor and Birth
- Menopause
- Menstrual Cramps
- Miscarriage
- Morning Sickness
- Osteoporosis
- Ovarian Cancer
- Ovarian Cysts
- Overactive Bladder (OAB)
- Pelvic Inflammatory Disease (PID)
- Pelvic Pain
- Perimenopause
- Placenta Previa
- Polycystic Ovary Syndrome (PCOS)
- Preeclampsia and Eclampsia
- Pregnancy
- Premature Ovarian Failure (POF)
- Premenstrual Dysphoric Disorder (PMDD)
- Premenstrual Syndrome (PMS)
- Prenatal Care
- Sexually Transmitted Diseases (STDs)
- Trichomoniasis
- Urinary Incontinence (UI)
- Urinary Retention
- Urinary Tract Infection (UTI)
- Uterine Cancer
- Uterine Fibroids
- Uterine Growths
- VBAC
- Vaginal Atrophy and Dryness
- Vaginal Bleeding
- Vaginal Cancer
- Vaginal Pain
- Vaginitis
- Women's Health
- Yeast Infection
Procedures Performed by Dr. Gregg A. Shimomura
ACA Marketplace (Obamacare/HealthCare.gov) plan networks
Insurers selling ACA Marketplace (HealthCare.gov) plans list Dr. Gregg A. Shimomura as in-network for the following 2026 plans.
Health plans
HMSA
Network data as of Sep 14, 2026, as reported by the insurer.
Show all 7 plans from HMSA
| Plan | Plan type | Network tier | New patients |
|---|---|---|---|
| HMSA Bronze PPO I | PPO · Expanded Bronze | Preferred Provider Plan | Accepting new patients |
| HMSA Bronze PPO II HSA | PPO · Expanded Bronze | Preferred Provider Plan | Accepting new patients |
| HMSA Catastrophic Plan | PPO · Catastrophic | Preferred Provider Plan | Accepting new patients |
| HMSA Gold PPO I | PPO · Gold | Preferred Provider Plan | Accepting new patients |
| HMSA Gold PPO II | PPO · Gold | Preferred Provider Plan | Accepting new patients |
| HMSA Platinum PPO | PPO · Platinum | Preferred Provider Plan | Accepting new patients |
| HMSA Silver PPO | PPO · Silver | Preferred Provider Plan | Accepting new patients |
This covers ACA Marketplace plans only, as reported by each insurer. It does not include employer, Medicare Advantage, or state-run exchange plans, and a plan missing from this list does not mean Dr. Gregg A. Shimomura is out of network. Insurer directories can be out of date, so always confirm with the insurer and the office before your visit.
Medicare Enrollment
Dr. Gregg A. Shimomura is enrolled to bill Medicare as a Practitioner - Obstetrics/gynecology .
Medicare practice location(s) (city/state/zip only, as reported to Medicare):
- HONOLULU, HI, 96813-2402
- AIEA, HI, 96701-3938
Based on Medicare's public enrollment records as of Jul 17, 2026. This reflects Medicare fee-for-service enrollment only and says nothing about other insurance, quality, outcomes, or board certification.
Payments received
Drug payment
| Amgen | $324 |
| Merck | $33 |
Other
| Food and Beverage | $358 |
Studies
UNIVERSITY OF HAWAII JOHN A. BURNS SCHOOL OF MEDICINE
Graduated in 1986
Looking for more Obstetrician and Gynecologists?
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- Address: Suite 504 99 128 Aiea Heights Drive Aiea, 96701, HI
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- Address: Space 3010 98-1005 Moanalua Road Aiea, 96701, HI
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- Address: #490 1079 Moanalua Road Aiea, 96701, HI
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- Address: Suite 403 99-128 Aiea Heights Drive Aiea, 96701, HI
- Gender: Female
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- Address: Suite 560 1079 Moanalua Road Aiea, 96701, HI
- Gender: Female
- Address: Suite 304 99-128 Aiea Heights Drive Aiea, 96701, HI
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- Address: 98-151 Pali Momi Street Aiea, 96701, HI
Questions & Answers
What conditions does Dr. Gregg Atsushi Shimomura treat?
Dr. Gregg Atsushi Shimomura provides treatment for Birth Control Counseling, Miscarriage, Pelvic Pain, Placenta Previa, Trichomoniasis, Urinary Retention. For the full list see this list.
Does Dr. Gregg Atsushi Shimomura accept patients with HMSA?
Yes, Dr. Gregg Atsushi Shimomura is listed in-network for HMSA through the ACA Marketplace (Obamacare/HealthCare.gov). See the Marketplace plans section for details.
Where can you meet with Dr. Gregg Atsushi Shimomura?
Dr. Gregg Atsushi Shimomura's office is located at 99 128 Aiea Heights Drive Suite 504 in Aiea, HI 96701.
Has Dr. Gregg Atsushi Shimomura affiliation with hospitals?
Dr. Gregg Atsushi Shimomura is affiliated with THE QUEENS MEDICAL CENTER. For the full list of hospitals see this list.