Dr. Sydney Tatsuno
- Gender: Male
- Experience: 41 years
- Graduated from: University Of Hawaii John A. Burns School Of Medicine
- Graduation year: 1980
- Sole propriator: Yes
- NPI: 1467547307
Dr. Sydney Tatsuno MD
Internist
He is located at 868 Ululani Street Ste 102 in Hilo, HI 96720. Can help patients with the following: Constipation, Gastroesophageal Reflux Disease (GERD), Headache, Heart Disease, Hot Flashes, Hyperlipidemia. His National Provider Identifier (NPI) number is 1467547307. Appointment can be made via the phone number (808) 969-1671. He is affiliated with 1 practices and 1 hospitals.
Conditions treated
Dr. Sydney Tatsuno, being an internist, 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. Sydney Tatsuno.
- Abdominal Pain
- Acute Pain
- Anemia
- Arthritis
- Asthma
- Atherosclerosis
- Bladder Control
- Chest Pain
- Cholecystitis
- Chronic Obstructive Pulmonary Disease (COPD)
- Common Cold
- Constipation
- Cystitis
- Diarrhea
- Edema
- Fever
- Gastroesophageal Reflux Disease (GERD)
- General Care
- Headache
- Heart Disease
- Hiatal Hernia
- High Blood Pressure
- Hot Flashes
- Hyperlipidemia
- Hyponatremia
- Influenza
- Inguinal Hernia
- Migraine
- Nausea and Vomiting
- Obesity
- Osteoporosis
- Peptic Ulcer
- Prescription Refill
- Urethritis
- Urinary Tract Infection (UTI)
Procedures Performed by Dr. Sydney Tatsuno
ACA Marketplace (Obamacare/HealthCare.gov) plan networks
Insurers selling ACA Marketplace (HealthCare.gov) plans list Dr. Sydney Tatsuno 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 | Not accepting new patients |
| HMSA Bronze PPO II HSA | PPO · Expanded Bronze | Preferred Provider Plan | Not accepting new patients |
| HMSA Catastrophic Plan | PPO · Catastrophic | Preferred Provider Plan | Not accepting new patients |
| HMSA Gold PPO I | PPO · Gold | Preferred Provider Plan | Not accepting new patients |
| HMSA Gold PPO II | PPO · Gold | Preferred Provider Plan | Not accepting new patients |
| HMSA Platinum PPO | PPO · Platinum | Preferred Provider Plan | Not accepting new patients |
| HMSA Silver PPO | PPO · Silver | Preferred Provider Plan | Not 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. Sydney Tatsuno 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. Sydney Tatsuno is enrolled to bill Medicare as a Practitioner - Internal Medicine .
Medicare practice location(s) (city/state/zip only, as reported to Medicare):
- HILO, HI, 96720-3913
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
| Amarin Pharma | $161 |
| Amgen | $123 |
| Takeda | $77 |
Other
| Food and Beverage | $643 |
Studies
UNIVERSITY OF HAWAII JOHN A. BURNS SCHOOL OF MEDICINE
Graduated in 1980
Looking for more Internists?
Out of the 34 internists in this region, here are 10 randomly selected ones for you to explore.
- Gender: Female
- Address: 590 Kapiolani Street Hilo, 96720, HI
- Gender: Male
- Address: 1190 Waianuenue Avenue Hilo, 96720, HI
- Gender: Female
- Address: Suite B 1178 Kinoole Street Hilo, 96720, HI
- Gender: Male
- Address: 24 Mauna Kea Street Hilo, 96720, HI
- Gender: Male
- Address: Suite 223 670 Ponahawai Street Hilo, 96720, HI
- Gender: Female
- Address: 201 Hamakua Drive Kailua, 96734, HI
- Gender: Male
- Address: 1190 Waianuenue Avenue Hilo, 96720, HI
- Gender: Male
- Address: 345 Kauila Street Hilo, 96720, HI
- Gender: Male
- Address: 134 Puuhonu Way Hilo, 96720, HI
- Gender: Male
- Address: Suite 206 82 Puuhonu Place Hilo, 96720, HI
Questions & Answers
Does Dr. Sydney Tatsuno have affiliation with practices?
Dr. Sydney Tatsuno is affiliated with Heajung Ruesing MD.
What conditions does Dr. Sydney Tatsuno treat?
Dr. Sydney Tatsuno provides treatment for Constipation, Gastroesophageal Reflux Disease (GERD), Headache, Heart Disease, Hot Flashes, Hyperlipidemia. For the full list see this list.
Does Dr. Sydney Tatsuno accept patients with HMSA?
Yes, Dr. Sydney Tatsuno is listed in-network for HMSA through the ACA Marketplace (Obamacare/HealthCare.gov). See the Marketplace plans section for details.
Has Dr. Sydney Tatsuno affiliation with hospitals?
Dr. Sydney Tatsuno is affiliated with HILO MEDICAL CENTER.
Where can you meet with Dr. Sydney Tatsuno?
Dr. Sydney Tatsuno's office is located at 868 Ululani Street Ste 102 in Hilo, HI 96720.