Doctor profile · Federal record
Dr. Ian Oyama, MD
Female Pelvic Medicine and Reconstructive Surgery (Obstetrics & Gynecology) Physician (CMS: Undefined Physician Type (Specify)) · Obstetrics & Gynecology Physician · Honolulu, HI
- NPI 1598749640
- Accepts Medicare
- MIPS 85.8 / 100 · 2023
- 29 yrs in practice
- Male
- Group practice
- No sanctions
Practice & contact
- Primary practice
-
1319 Punahou St, Ste 801
Honolulu, HI 968261001
(808) 949-5305
fax (808) 955-2174
Credentials & registration
- NPI registered
- December 2005 — 21 yrs on file
- Profile last updated
- November 22, 2013
- Year of graduation
- 1997 — 29 yrs since
- Specialty taxonomy
- 207VF0040X — NUCC code
- State license (1)
- Hawaii #MD11095
- Medicaid
- HI #568595
Federal sanctions & exclusions
No sanctions, exclusions or revocations on file
Checked against OIG LEIE on NPI 1598749640. Last verified May 11, 2026.Medicare procedures · 2023
Top services delivered
Total services
195
Distinct HCPCS
5
Medicare allowed
$20,862
| HCPCS | Description | Services | Patients | Avg allowed | |
|---|---|---|---|---|---|
99214 |
Established patient office or other outpatient visit, 30-39 minutes | 56 | 46 | $135 | |
51701 |
Insertion of temporary bladder tube | 54 | 52 | $46 | |
99204 |
New patient office or other outpatient visit, 45-59 minutes | 33 | 33 | $162 | |
99213 |
Established patient office or other outpatient visit, 20-29 minutes | 29 | 21 | $96 | |
99203 |
New patient office or other outpatient visit, 30-44 minutes | 23 | 23 | $117 |
In context: peer comparison
Among 1 peers in Honolulu Female Pelvic Medicine and Reconstructive Surgery (Obstetrics & Gynecology) Physician, average services per provider: 39. This provider delivers 5.0× the peer median.Open Payments
Industry payments received
All-time total
$907
Transactions
16
Manufacturers
3
| Payer (manufacturer) | Industry | Txns | Amount |
|---|---|---|---|
| Axonics, INC. | 7 | $520.51 | |
| Medtronic, INC. | 2 | $247.46 | |
| Merck Sharp & Dohme LLC | 7 | $138.61 |
By nature of payment
Medicare Part D · 2023
Top prescriptions
Total claims
523
Patients
271
Total drug cost
$248,758
| Drug | Type | Claims | Patients | Total cost |
|---|---|---|---|---|
| Myrbetriq (Mirabegron) | Brand | 110 | 37 | $106,038 |
| Gemtesa (Vibegron) | Brand | 105 | 33 | $117,523 |
| Nitrofurantoin Mono-Macro (Nitrofurantoin Monohyd/M-Cryst) | Brand | 63 | 50 | $864 |
| Estradiol | Generic | 35 | 22 | $2,872 |
| Premarin (Estrogens, Conjugated) | Brand | 31 | 16 | $15,191 |
| Sulfamethoxazole-Trimethoprim (Sulfamethoxazole/Trimethoprim) | Brand | 29 | 27 | $141 |
| Ciprofloxacin Hcl | Generic | 22 | 19 | $120 |
| Ibuprofen | Generic | 21 | 20 | $92 |
| Trospium Chloride | Generic | 20 | 0 | $3,335 |
| Amoxicillin-Clavulanate Potass (Amoxicillin/Potassium Clav) | Brand | 19 | 17 | $190 |
Frequently asked questions
What is Dr. Ian Oyama's medical specialty?
Dr. Ian Oyama practices Female Pelvic Medicine and Reconstructive Surgery (Obstetrics & Gynecology) Physician in Honolulu, HI.
Where does Dr. Ian Oyama practice?
Dr. Ian Oyama practices at 1319 Punahou St, Honolulu, HI 968261001. Office phone: 8089495305.
What is Dr. Ian Oyama's NPI?
Dr. Ian Oyama's National Provider Identifier (NPI) is 1598749640, issued by NPPES.
Does Dr. Ian Oyama accept Medicare assignment?
Yes. Dr. Ian Oyama accepts Medicare assignment, meaning Medicare-allowed amounts are accepted as full payment for covered services.
What procedures does Dr. Ian Oyama commonly perform?
Top Medicare-reported procedures in 2023: Established patient office or other outpatient visit (HCPCS 99214); Insertion of temporary bladder tube (HCPCS 51701); New patient office or other outpatient visit (HCPCS 99204). Source: CMS Medicare Physician & Other Practitioners file.