Doctor profile · Federal record
Dr. Tomifumi Onishi, M.D
Internal Medicine Physician (CMS: Internal Medicine) · Ewa Beach, HI
- NPI 1861680399
- Accepts Medicare
- 23 yrs in practice
- Male
- Group practice
- No sanctions
Practice & contact
- Primary practice
-
91-2141 Fort Weaver RD
Ewa Beach, HI 967061993
(808) 691-3900
Credentials & registration
- NPI registered
- October 2007 — 19 yrs on file
- Profile last updated
- January 22, 2015
- Year of graduation
- 2003 — 23 yrs since
- Specialty taxonomy
- 207R00000X — NUCC code
- State license (1)
- Texas #N3962
Federal sanctions & exclusions
No sanctions, exclusions or revocations on file
Checked against OIG LEIE on NPI 1861680399. Last verified May 11, 2026.Medicare procedures · 2023
Top services delivered
Total services
525
Distinct HCPCS
3
Medicare allowed
$60,503
| HCPCS | Description | Services | Patients | Avg allowed | |
|---|---|---|---|---|---|
99233 |
Subsequent hospital care with moderate levelof medical decision making, if using time, at least 50 minutes | 358 | 104 | $122 | |
99239 |
Hospital discharge day management, more than 30 minutes | 90 | 85 | $118 | |
99232 |
Subsequent hospital care with moderate levelof medical decision making, if using time, at least 35 minutes | 77 | 14 | $79 |
In context: peer comparison
Among 12 peers in this city , average services per provider: 102. This provider delivers 5.1× the peer median.Open Payments
Industry payments received
All-time total
$125
Transactions
1
Manufacturers
1
| Payer (manufacturer) | Industry | Txns | Amount |
|---|---|---|---|
| Novo Nordisk Inc | 1 | $124.99 |
By nature of payment
Medicare Part D · 2023
Top prescriptions
Total claims
140
Patients
125
Total drug cost
$12,022
| Drug | Type | Claims | Patients | Total cost |
|---|---|---|---|---|
| Pantoprazole Sodium | Generic | 24 | 19 | $394 |
| Cefdinir | Generic | 21 | 20 | $310 |
| Prednisone | Generic | 21 | 20 | $78 |
| Eliquis (Apixaban) | Brand | 18 | 12 | $10,762 |
| Doxycycline Hyclate | Generic | 15 | 15 | $172 |
| Furosemide | Generic | 15 | 15 | $68 |
| Metoprolol Succinate | Generic | 14 | 12 | $120 |
| Cephalexin | Generic | 12 | 12 | $118 |
Hospital affiliations
Frequently asked questions
What is Dr. Tomifumi Onishi's medical specialty?
Dr. Tomifumi Onishi practices Internal Medicine Physician in Ewa Beach, HI.
Where does Dr. Tomifumi Onishi practice?
Dr. Tomifumi Onishi practices at 91-2141 Fort Weaver RD, Ewa Beach, HI 967061993. Office phone: 8086913900.
What is Dr. Tomifumi Onishi's NPI?
Dr. Tomifumi Onishi's National Provider Identifier (NPI) is 1861680399, issued by NPPES.
Does Dr. Tomifumi Onishi accept Medicare assignment?
Yes. Dr. Tomifumi Onishi accepts Medicare assignment, meaning Medicare-allowed amounts are accepted as full payment for covered services.
What procedures does Dr. Tomifumi Onishi commonly perform?
Top Medicare-reported procedures in 2023: Subsequent hospital care with moderate levelof medical decision making (HCPCS 99233); Hospital discharge day management (HCPCS 99239); Subsequent hospital care with moderate levelof medical decision making (HCPCS 99232). Source: CMS Medicare Physician & Other Practitioners file.