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DR. IAN OYAMA MD
NPI 1598749640
Obstetrics & Gynecology - Urogynecology and Reconstructive Pelvic Surgery in Honolulu, HI

Active since December 02, 2005PECOS EnrolledAccepts Medicare Assignment
85.78/100
CMS Quality Rating
1319 PUNAHOU ST, STE 801, HONOLULU, HI 96826(808) 949-5305(808) 955-2174 Get Directions Write a Review

NPPES record last updated: November 22, 2013. Verified against the NPPES registry weekly; last sync: November 01, 2026.

About Dr. Ian Oyama Md NPPES

Official registry information on file with the National Plan and Provider Enumeration System.

DR. IAN OYAMA MD (NPI 1598749640) is an individual urogynecology and reconstructive pelvic surgery provider in Honolulu, Hawaii, licensed in Hawaii (MD11095) and active in the NPI registry since December 2005. He is enrolled in Medicare PECOS, is affiliated with Hilo Medical Center, and is a graduate of University Of Hawaii John A. Burns School Of Medicine (1997).

NPPES Registry Identity

NPI1598749640
Entity TypeIndividualMale
Primary Taxonomy207VF0040X
Provider Legal NameDR. IAN OYAMACredential: MD
Location Address1319 PUNAHOU ST, STE 801Honolulu, HI 96826-1001
Mailing Address1319 Punahou St, Ste 824Honolulu, HI 96826-1001 · (808) 203-6519 · Fax (808) 955-2174
Phone(808) 949-5305
Fax(808) 955-2174
Sole ProprietorNo
Medical School CMSUniversity Of Hawaii John A. Burns School Of MedicineGraduated 1997
Enumeration DateDecember 2, 2005
Last NPPES UpdateNovember 22, 2013
✔ NPI 1598749640 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses 2

★ Primary SpecialtyObstetrics & Gynecology · Urogynecology and Reconstructive Pelvic SurgeryAllopathic & Osteopathic Physicians
Taxonomy Code207VF0040X
License✔ Licensed in HI · MD11095
Definition
A subspecialist in Urogynecology and Reconstructive Pelvic Surgery is a physician in Urology or Obstetrics and Gynecology who, by virtue of education and training, is prepared to provide consultation and comprehensive management of women with complex benign pelvic conditions, lower urinary tract disorders, and pelvic floor dysfunction. Comprehensive management includes those diagnostic and therapeutic procedures necessary for the total care of the patient with these conditions and complications resulting from them.
Also ListedObstetrics & GynecologyTaxonomy 207V00000X · License MD11095 (HI)
1319 PUNAHOU ST, Honolulu, HI 96826
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Other Identifiers 3

Medicare ID-Type Unspecified100583
Medicare UPINH69049
Medicaid568595HI

Accepted Insurance

The full list of accepted plans is on the Insurance tab. Issuers include HMSA, Oscar Health.Insurance ›

Medicare Participation & PECOS CMS

Medicare enrollment, assignment, billing reassignment, and ordering and referring status from CMS.

Medicare Enrollment Status

✔

Enrolled in Medicare and accepts Medicare assignment

Dr. Ian Oyama Md is registered in PECOS and agrees to accept the Medicare-approved amount as full payment. Medicare patients are not billed beyond the standard deductible and coinsurance.

PECOS PAC ID1850320813
PECOS Enrollment IDI20050810000230
Eligible to Order & Refer✔ Part B Labs & Imaging✔ Durable Medical Equipment✔ Home Health Agency✔ Power Mobility DevicesPer the CMS Ordering and Referring file. Eligibility means Medicare pays claims that this provider orders or refers for these categories.

Medicare Billing Reassignments

2

Medicare enrollment records show Ian Oyama reassigns Medicare billing to 2 organizations. Each organization bills Medicare for the services this provider delivers there; the nearest is listed first.

Kapiolani Medical Specialists
Same address
Multi-Specialty
1319 PUNAHOU ST
Honolulu, HI 96826
  • Reassigned Medicare billing, Hawaii enrollment
  • 370 clinicians in this Medicare group
NPI 1124071014 (808) 983-8736
Hawaii Permanente Medical Group Inc
6.1 mi
Health Maintenance Organization
3288 MOANALUA RD
Honolulu, HI 96819
  • Reassigned Medicare billing, Hawaii enrollment
  • 1,187 clinicians in this Medicare group
NPI 1710945969 (808) 432-0000

Source: CMS Revalidation Reassignment List, October 2026 release. Reassignment records can lag staffing changes; confirm a current affiliation with the organization.

Areas of Expertise CMS Part B claims 8

Services this provider delivered to Medicare fee-for-service patients, from the CMS Medicare utilization data. Higher counts generally reflect more experience with a service; care delivered outside Medicare is not included.

Established patient office or other outpatient visit with moderate level of decision making, if using time, 30 minutes or more 99214
This is a routine check-up for patients who have previously visited our clinic. It involves a comprehensive review of your health and any ongoing treatments. The consultation lasts between 30-39 minutes, allowing enough time to discuss any concerns.
58 services50 patients
Insertion of temporary bladder tube 51701
This procedure involves placing a small tube into your lower abdomen to help drain urine from your bladder. It's a temporary measure, often used when normal urination is not possible. The tube remains in place until you can urinate on your own again.
49 services48 patients
Established patient office or other outpatient visit with low level od decision making, if using time, 20 minutes or more 99213
This is a routine visit for patients who have already been seen by the healthcare provider. During this approximately 20-29 minute appointment, your health status will be evaluated and any necessary treatments or tests will be discussed. It's a chance to address any health concerns you may have.
31 services20 patients
New patient office or other outpatient visit with moderate level of medical decision making, if using time, 45 minutes or more 99204
This is a first-time office or outpatient visit lasting between 45-59 minutes. The healthcare provider evaluates your health, discusses your medical history, and may suggest further tests or treatments. It's an opportunity to ask questions and understand your health better.
30 services30 patients
New patient office or other outpatient visit with low level of medical decision making, if using time, 30 minutes or more 99203
This service involves an initial office or outpatient visit for a new patient. The healthcare professional will spend 30-44 minutes understanding your health history, current issues, and discussing possible treatment plans. It's a comprehensive evaluation to start your healthcare journey.
18 services18 patients
Repair of pelvic ligaments through vagina 57282
This procedure involves mending the supportive tissues in your lower body region, accessed via the birth canal. It helps enhance stability and alleviate discomfort. The process is performed under anesthesia, ensuring a pain-free experience.
14 services14 patients

Hospital Affiliations CMS Care Compare 3

Hospitals where this provider delivers care, identified from recent Medicare claims and place-of-service records.

Hilo Medical Center

Acute Care Hospitals · Hilo, HI
2/5 CMS rating
OwnershipGovernment - State
CMS Certification Number120005
Location1190 Waianuenue AvenueHilo, HI 96720 · Hawaii County
Emergency services Birthing friendly

Pali Momi Medical Center

Acute Care Hospitals · Aiea, HI
4/5 CMS rating
OwnershipProprietary
CMS Certification Number120026
Location98-1079 Moanalua RoadAiea, HI 96701 · Honolulu County
Emergency services
OwnershipVoluntary non-profit - Private
CMS Certification Number123300
Location1319 Punahou StreetHonolulu, HI 96826 · Honolulu County
Emergency services

Physician Visit Costs CMS claims · ZIP area

Typical Medicare office-visit costs in the 96826 ZIP code area, from fee-for-service claims. These are area statistics, not this provider’s prices; actual charges vary by service and coverage.

New Patient
$136.68 typical visit price
range $60.53 – $180.05
Typical copayment $34.17 (range $15.13 – $45.01)
Most-billed visit code 99204
Established Patient
$74.92 typical visit price
range $20.09 – $147.56
Typical copayment $18.73 (range $5.02 – $36.89)
Most-billed visit code 99213
Amounts reflect what Medicare beneficiaries in this ZIP area are typically charged for office visits. Patients with other coverage should check their individual plans.

Medicare Quality Performance CMS QPP · MIPS

Performance in the CMS Quality Payment Program: the MIPS final score across four weighted categories, and the individual quality measures reported to Medicare.

85.78/100
MIPS Final ScoreMerit-based Incentive Payment System · CMS Quality Payment Program
Scored as part of a group practice
Quality82.96
Promoting Interoperability100
Improvement Activities40
Cost69.65

Other Providers at the Same Location NPPES 20

Providers registered at the same practice address, or within the immediate area, according to the NPPES registry.

DR. JEFFREY K. OKAMOTO M.D.
Pediatrics (Developmental - Behavioral Pediatrics)
1319 PUNAHOU ST, SUITE 757
HONOLULU, HI 96826
Honolulu County (808) 983-8387
JOHN LEE KATO PHARMD
Pharmacist
1319 PUNAHOU ST
HONOLULU, HI 96826
Honolulu County (808) 983-8399
KELLEY CHINEN OKIMOTO M.D.
Pediatrics
1319 PUNAHOU ST
HONOLULU, HI 96826
Honolulu County (808) 983-8387
MINGSANG LIN M.D.
Internal Medicine
1319 PUNAHOU ST, SUITE 515
HONOLULU, HI 96826
Honolulu County (808) 955-3777
DR. KONSTANTINE P. XOINIS M.D.
Pediatrics (Pediatric Critical Care Medicine)
1319 PUNAHOU ST
HONOLULU, HI 96826
Honolulu County (808) 983-6000
DR. FRANKLIN S.H. YOUNG M.D.
Pediatrics
1319 PUNAHOU ST, SUITE 1060
HONOLULU, HI 96826
Honolulu County (808) 955-7808
AKIKO M. YAZAWA, MD, INC
Obstetrics & Gynecology (Obstetrics)
1319 PUNAHOU ST, SUITE 1180
HONOLULU, HI 96826
Honolulu County (808) 955-6324
JESSICA LYNN SHULL RN
Registered Nurse (Lactation Consultant)
1319 PUNAHOU ST
HONOLULU, HI 96826
Honolulu County (808) 947-6920

Frequently Asked Questions NPPES & CMS

Common questions about this NPI record, answered from the official NPPES registry and CMS datasets shown on this page.

What is Ian Oyama's NPI number?

The NPI number for Ian Oyama is 1598749640. It was assigned to this individual provider in the NPPES registry on December 2, 2005.

Where is Ian Oyama located?

Ian Oyama practices at 1319 Punahou St Ste 801, Honolulu, HI 96826. The listed phone number is (808) 949-5305.

What is Ian Oyama's specialty?

The primary specialty registered for this NPI is Obstetrics & Gynecology, specializing in Urogynecology and Reconstructive Pelvic Surgery, with taxonomy code 207VF0040X.

Is Ian Oyama enrolled in Medicare?

Yes. Ian Oyama is registered in the Medicare PECOS system and accepts Medicare assignment, which means accepting the Medicare-approved amount as payment in full for covered services.

Which organizations bill Medicare for Ian Oyama's services?

According to the CMS Revalidation Reassignment List (October 2026 release), Ian Oyama reassigns Medicare benefits to 2 organizations: Kapiolani Medical Specialists (Honolulu, HI) and Hawaii Permanente Medical Group Inc (Honolulu, HI). Each reassignment is filed with Medicare on form CMS-855R, signed by both the clinician and the organization, and lets the organization bill Medicare and receive payment for Ian Oyama's services. Reassignment records can lag staffing changes; confirm current arrangements with the organization.

What insurance does Ian Oyama accept?

Health plans from HMSA and Oscar Health list Ian Oyama as in-network in at least one marketplace plan. Coverage varies by plan and year; verify with the insurer or the provider before a visit.

Is Ian Oyama affiliated with any hospitals?

According to CMS data, Ian Oyama is affiliated with Hilo Medical Center, Pali Momi Medical Center and Kapiolani Medical Center For Women & Children.

When was this NPI record last updated?

The NPPES record for Ian Oyama was last updated on November 22, 2013. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 12 years ago. If this record has changed at CMS more recently, you can request an on-demand re-check against the live CMS registry, directly from this page.