Doctor profile · Federal record
Dr. Roy Matsuyama, M.D.
Gastroenterology Physician (CMS: Gastroenterology) · Kahului, HI
- NPI 1144356783
- Accepts Medicare
- 46 yrs in practice
- Male
- Solo practice
- No sanctions
Practice & contact
- Primary practice
-
173 Hoohana St, Suite 104
Kahului, HI 967322482
(808) 871-7222
fax (808) 871-2222
Credentials & registration
- NPI registered
- February 2007 — 19 yrs on file
- Profile last updated
- February 3, 2015
- Year of graduation
- 1980 — 46 yrs since
- Specialty taxonomy
- 207RG0100X — NUCC code
- State license (1)
- Hawaii #17851
Federal sanctions & exclusions
No sanctions, exclusions or revocations on file
Checked against OIG LEIE on NPI 1144356783. Last verified May 11, 2026.Medicare procedures · 2023
Top services delivered
Total services
478
Distinct HCPCS
9
Medicare allowed
$64,303
| HCPCS | Description | Services | Patients | Avg allowed | |
|---|---|---|---|---|---|
99152 |
Use of a drug to induce depression of consciousness by physician performing a procedure (5 years or older), initial 15 minutes | 105 | 104 | $12 | |
99204 |
New patient office or other outpatient visit, 45-59 minutes | 74 | 74 | $172 | |
99214 |
Established patient office or other outpatient visit, 30-39 minutes | 72 | 54 | $130 | |
99205 |
New patient office or other outpatient visit, 60-74 minutes | 58 | 58 | $220 | |
45378 |
Diagnostic exam of large bowel using a flexible endoscope | 48 | 48 | $179 | |
45380 |
Biopsy of large bowel using a flexible endoscope | 41 | 41 | $196 | |
43239 |
Biopsy of esophagus, stomach, and/or upper small bowel using a flexible endoscope | 39 | 38 | $65 | |
45385 |
Removal of polyps or growths of large bowel using an endoscope with mechanical snare | 27 | 27 | $254 | |
99223 |
Initial hospital care with moderate level of medical decision making, if using time, at least 75 minutes | 14 | 14 | $153 |
In context: peer comparison
Among 1 peers in Kahului Gastroenterology Physician, average services per provider: 53. This provider delivers 9.0× the peer median.Open Payments
Industry payments received
All-time total
$317
Transactions
5
Manufacturers
3
| Payer (manufacturer) | Industry | Txns | Amount |
|---|---|---|---|
| Cook Medical LLC | 1 | $124.71 | |
| AstraZeneca Pharmaceuticals Lp | 1 | $120.09 | |
| Pfizer INC. | 3 | $72.05 |
By nature of payment
Medicare Part D · 2023
Top prescriptions
Total claims
315
Patients
207
Total drug cost
$110,200
| Drug | Type | Claims | Patients | Total cost |
|---|---|---|---|---|
| Gavilyte-G (Peg3350/Sod Sulf,Bicarb,Cl/Kcl) | Brand | 174 | 172 | $3,085 |
| Omeprazole | Generic | 54 | 19 | $798 |
| Pantoprazole Sodium | Generic | 23 | 0 | $355 |
| Creon (Lipase/Protease/Amylase) | Brand | 20 | 0 | $104,623 |
| Gavilyte-C (Peg3350/Sod Sulf,Bicarb,Cl/Kcl) | Brand | 16 | 16 | $325 |
| Budesonide Dr (Budesonide) | Brand | 14 | 0 | $789 |
| Dicyclomine Hcl | Generic | 14 | 0 | $225 |
Frequently asked questions
What is Dr. Roy Matsuyama's medical specialty?
Dr. Roy Matsuyama practices Gastroenterology Physician in Kahului, HI.
Where does Dr. Roy Matsuyama practice?
Dr. Roy Matsuyama practices at 173 Hoohana St, Kahului, HI 967322482. Office phone: 8088717222.
What is Dr. Roy Matsuyama's NPI?
Dr. Roy Matsuyama's National Provider Identifier (NPI) is 1144356783, issued by NPPES.
Does Dr. Roy Matsuyama accept Medicare assignment?
Yes. Dr. Roy Matsuyama accepts Medicare assignment, meaning Medicare-allowed amounts are accepted as full payment for covered services.
What procedures does Dr. Roy Matsuyama commonly perform?
Top Medicare-reported procedures in 2023: Use of a drug to induce depression of consciousness by physician performing a procedure (5 years or older) (HCPCS 99152); New patient office or other outpatient visit (HCPCS 99204); Established patient office or other outpatient visit (HCPCS 99214). Source: CMS Medicare Physician & Other Practitioners file.