Doctor profile · Federal record
Dr. Gaku Yamaguchi, M.D.
Family Medicine Physician (CMS: Family Practice) · Hilo, HI
- NPI 1033592126
- Accepts Medicare
- 11 yrs in practice
- Male
- Group practice
- No sanctions
Practice & contact
- Primary practice
-
1438 Kilauea Ave
Hilo, HI 967204286
(808) 969-9220
Credentials & registration
- NPI registered
- July 2015 — 11 yrs on file
- Profile last updated
- December 19, 2018
- Year of graduation
- 2015 — 11 yrs since
- Specialty taxonomy
- 207Q00000X — NUCC code
- State license (1)
- Hawaii #MD-19597
Federal sanctions & exclusions
No sanctions, exclusions or revocations on file
Checked against OIG LEIE on NPI 1033592126. Last verified May 11, 2026.Medicare procedures · 2023
Top services delivered
Total services
528
Distinct HCPCS
4
Medicare allowed
$64,083
| HCPCS | Description | Services | Patients | Avg allowed | |
|---|---|---|---|---|---|
99214 |
Established patient office or other outpatient visit, 30-39 minutes | 414 | 112 | $128 | |
99213 |
Established patient office or other outpatient visit, 20-29 minutes | 87 | 46 | $93 | |
99215 |
Established patient office or other outpatient visit, 40-54 minutes | 15 | 12 | $186 | |
93000 |
Routine electrocardiogram (ecg) using at least 12 leads with interpretation and report | 12 | 11 | $15 |
In context: peer comparison
Among 21 peers in Hilo Family Medicine Physician, average services per provider: 116. This provider delivers 4.6× the peer median.Medicare Part D · 2023
Top prescriptions
Total claims
1,326
Patients
342
Total drug cost
$260,578
| Drug | Type | Claims | Patients | Total cost |
|---|---|---|---|---|
| Atorvastatin Calcium | Generic | 230 | 65 | $9,559 |
| Losartan Potassium | Generic | 214 | 63 | $7,552 |
| Trulicity (Dulaglutide) | Brand | 115 | 15 | $151,761 |
| Amlodipine Besylate | Generic | 89 | 27 | $1,553 |
| Pravastatin Sodium | Generic | 89 | 21 | $1,518 |
| Metoprolol Succinate | Generic | 75 | 19 | $2,095 |
| Albuterol Sulfate Hfa (Albuterol Sulfate) | Brand | 74 | 20 | $2,923 |
| Metformin Hcl | Generic | 74 | 19 | $668 |
| Hydrochlorothiazide | Generic | 67 | 22 | $430 |
| Metformin Hcl ER (Metformin Hcl) | Brand | 55 | 17 | $794 |
Frequently asked questions
What is Dr. Gaku Yamaguchi's medical specialty?
Dr. Gaku Yamaguchi practices Family Medicine Physician in Hilo, HI.
Where does Dr. Gaku Yamaguchi practice?
Dr. Gaku Yamaguchi practices at 1438 Kilauea Ave, Hilo, HI 967204286. Office phone: 8089699220.
What is Dr. Gaku Yamaguchi's NPI?
Dr. Gaku Yamaguchi's National Provider Identifier (NPI) is 1033592126, issued by NPPES.
Does Dr. Gaku Yamaguchi accept Medicare assignment?
Yes. Dr. Gaku Yamaguchi accepts Medicare assignment, meaning Medicare-allowed amounts are accepted as full payment for covered services.
What procedures does Dr. Gaku Yamaguchi commonly perform?
Top Medicare-reported procedures in 2023: Established patient office or other outpatient visit (HCPCS 99214); Established patient office or other outpatient visit (HCPCS 99213); Established patient office or other outpatient visit (HCPCS 99215). Source: CMS Medicare Physician & Other Practitioners file.