Dr. Gregory K. Kobayashi D.D.S.
Dentist
He is located at 280 Ponahawai Street in Hilo, HI 96720. Can help patients with the following: Dental Bridges, Dental Exam and Cleaning, Dental Malocclusion, Dentin Hypersensitivity, Dentures, Gum Disease / Gingivitis. His National Provider Identifier (NPI) number is 1205948346. Appointment can be made via the phone number (808) 935-4845.
Conditions treated
Dr. Gregory Kazuo Kobayashi, being an dentist, 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. Gregory K. Kobayashi.
- Bleeding Gums
- Cosmetic Dentistry
- Dental Bridges
- Dental Crowns and Caps
- Dental Emergency
- Dental Exam and Cleaning
- Dental Implants
- Dental Malocclusion
- Dentin Hypersensitivity
- Dentures
- Gum Disease / Gingivitis
- Invisalign
- Laser
- Oral Cancer Examination
- Pericoronitis
- Teeth Grinding
- Teeth Whitening
- Veneers
ACA Marketplace (Obamacare/HealthCare.gov) plan networks
Insurers selling ACA Marketplace (HealthCare.gov) plans list Dr. Gregory K. Kobayashi as in-network for the following 2026 plans.
Dental plans
Hawaii Dental Service
Network data as of Sep 12, 2026, as reported by the insurer.
| Plan | Plan type | Network tier | New patients |
|---|---|---|---|
| HDS Classic Dental Plan | PPO · Low | Delta Dental Premier | Not accepting new patients |
| HDS Individual Dental Plan for Children | PPO · Low | Delta Dental Premier | Not accepting new patients |
| HDS Preferred Dental Plan | PPO · Low | Delta Dental Premier | Not accepting new patients |
HMSA
Network data as of Sep 14, 2026, as reported by the insurer.
| Plan | Plan type | Network tier | New patients |
|---|---|---|---|
| HMSA Individual Dental PPO Bronze | PPO · Low | Dental PPO | Accepting new patients |
| HMSA Individual Dental PPO Gold | PPO · High | Dental PPO | Accepting new patients |
| HMSA Individual Dental PPO Pediatric Essential | PPO · High | Dental PPO | Accepting new patients |
| HMSA Individual Dental PPO Silver | PPO · Low | Dental PPO | Accepting new patients |
Humana
Network data as of Sep 13, 2026, as reported by the insurer.
| Plan | Plan type | Network tier | New patients |
|---|---|---|---|
| Humana Dental Smart Choice - High | PPO · High | Preferred | Accepting new patients |
| Humana Dental Smart Choice - Low | PPO · Low | Preferred | 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. Gregory K. Kobayashi 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. Gregory K. Kobayashi is enrolled to bill Medicare as a Order And Referring Only - Oral Surgery (also registered under: Practitioner - Oral Surgery) .
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
| Straumann | $134 |
| Tulsa Dental Products | $127 |
| Zimmer Biomet | $56 |
Other
| Food and Beverage | $338 |
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Questions & Answers
What conditions does Dr. Gregory Kazuo Kobayashi treat?
Dr. Gregory Kazuo Kobayashi provides treatment for Dental Bridges, Dental Exam and Cleaning, Dental Malocclusion, Dentin Hypersensitivity, Dentures, Gum Disease / Gingivitis. For the full list see this list.
Where can you meet with Dr. Gregory Kazuo Kobayashi?
Dr. Gregory Kazuo Kobayashi's office is located at 280 Ponahawai Street in Hilo, HI 96720.
Does Dr. Gregory Kazuo Kobayashi accept insurance?
Dr. Gregory Kazuo Kobayashi is listed in-network for 9 ACA Marketplace (Obamacare/HealthCare.gov) plans from Hawaii Dental Service, HMSA, Humana. See the Marketplace plans section for details.