NPPES file of Aug 9, 2026

Seiji Yamada, M.D.

Family Medicine Physician · Mililani, HI

Seiji Yamada, M.D. is a family medicine physician with a practice address in Mililani, Hawaii, and NPI 1245300904, issued on Nov 9, 2006. Check the license (Hawaii MD - 8582, as entered in NPPES) on the Hawaii Medical Board; the Medicare figures below come from public CMS files.

Record from CMS NPPES, file of Aug 9, 2026 · Medicare files 2023 and 2024 · method · Verify with CMS →

NPPES recordNPPES file of Aug 9, 2026
1245300904
Name
Seiji Yamada
Credential
M.D.
Primary taxonomy
Family Medicine Physician 207Q00000X
License number
MD - 8582 HI
Self-reported in NPPES; status is on the state search
Practice location
95-390 Kuahelani Ave, Mililani, HI 96789
Phone
(808) 627-3200
Enumerated
Nov 9, 2006
Record last updated
Jul 29, 2011 (not updated in 15 years: call before relying on the address or phone)
Fax
(808) 623-7872
Medicare enrollment
Enrolled (PECOS I20040414000922); accepts Medicare assignment
Medical or professional school
University Of Illinois College Of Med (Chi/Peor/Rock/Chm-Urb), 1987
Telehealth
Offers telehealth (CMS)
Entity
Type 1 · individual
Public record from CMS NPPES (open it on the CMS NPI Registry). Enrollment, assignment, school and telehealth: CMS Doctors and Clinicians file, Aug 2026. A record is not a license: verify it with the state board.
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Also registered at 95-390 Kuahelani Ave

A shared address usually means a shared clinic or building; it does not show who employs whom.

  1. Kumiko Aman, M.D.Student in an Organized Health Care Education/Training Program1396005534
  2. Lee Buenconsejo-Lum, MDFamily Medicine Physician1669442851
  3. Nicole Cardillo, OT/CHTHand Occupational Therapist1144227091
  4. Tai-Ho Chen, MDFamily Medicine Physician1932189784
  5. Jason Crookham, DOFamily Medicine Physician1396940292
  6. Peter Donnelly, MDFamily Medicine Physician1871573626

Verify Seiji Yamada in five checks

  1. 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
  2. 2LicenseActive license and public ordersHawaii Medical Board
    Search for license MD - 8582
    Check the board
  3. 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
  4. 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
  5. 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
Open the Hawaii license search

PlainDoctor does not match the HHS-OIG exclusion list to individual records: most entries carry no NPI. Search the OIG exclusion list by name.

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62% fewer Medicare Part D claims than the average family medicine physician in 2024

1,362 Medicare Part D claims for 309 beneficiaries, against an average of 3,544 among the 117,163 providers of this specialty who prescribed in Part D. 13 claims were for opioids.

  1. Seiji Yamada1,362
  2. Specialty average3,544

Most prescribed

  1. Atorvastatin Calcium120 claims
  2. Amlodipine Besylate93 claims
  3. Losartan Potassium74 claims
  4. Lisinopril51 claims
  5. Metformin Hcl50 claims
  6. Alendronate Sodium38 claims

Source: CMS Medicare Part D Prescribers by Provider and Drug, 2024 (data.cms.gov). Part D covers prescriptions for Medicare patients only; drugs with fewer than 11 claims are not published.

The practice group's MIPS final score for 2023 (Medicare payment program): 86.3 of 100

The Merit-based Incentive Payment System score is reported for the practice group, not for one clinician alone. Four categories are weighted into the final score; the average among 454,083 clinicians with a measured score was 83.5.

  1. Qualityout of 100 · 30% of the final score82.9
  2. Costout of 100 · 30%71.4
  3. Promoting interoperabilityout of 100 · 25%100.0
  4. Improvement activities40 of 40 points · 15%100.0

Source: CMS Quality Payment Program, MIPS performance year 2023, group reporting; category weights for 2023 (qpp.cms.gov).

Industry payments in 2024: $163.74

1 payment: food and beverage; the largest payer was Boston Scientific Corporation. The 55,478 providers of this specialty with any payment received $902.55 on average. Payments are reported by manufacturers, not by the provider, and are not a sign of wrongdoing.

  1. Seiji Yamada$163.74
  2. Specialty average$902.55

Source: CMS Open Payments, program year 2024 (openpaymentsdata.cms.gov); average among providers of this specialty with at least one payment.

2 hospitals and group practices

  1. Pali Momi Medical CenterAiea, HI · Acute Care Hospitals4 of 5 stars
  2. Charlie Y Sonido M D LLCWaipahu, HI

Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through); hospitals matched to CMS Hospital General Information (Care Compare) (data.cms.gov). Star ratings are CMS hospital ratings, not ratings of this provider.

Seiji Yamada among 730 family medicine physician records in Hawaii

Seiji Yamada, M.D. is one of 730 family medicine physician records with a practice address in Hawaii. 65% of them appear in a Medicare file (Part D prescribing, MIPS, Open Payments or Medicare group billing); this one does. Its NPI, issued in 2006, is newer than 8% of them.

  • NPI issued2006 · 8% of these records are older, 58% newer
  • In a Medicare fileYes · 65% of these records are
  • In the CMS Doctors and Clinicians fileYes · 53% of these records are
  • Graduated1987 · median 2006 among the 383 with a school on file
  • Record last updated2011 · 54% of these records were not updated in five years or more

Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 207Q00000X and a Hawaii practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).

31 family medicine physician records list a practice address in Mililani

They are 31 of the 978 NPPES records with a practice address in Mililani, and 730 family medicine physician records in Hawaii.

The 8 family medicine physician records with the nearest ZIP codes

  1. Lee Buenconsejo-Lum, MDMililani, HI 967891669442851
  2. Tai-Ho Chen, MDMililani, HI 967891932189784
  3. Jason Crookham, DOMililani, HI 967891396940292
  4. Thuy Doan, MDMililani, HI 967891578643912
  5. Peter Donnelly, MDMililani, HI 967891871573626
  6. Steven Hankins, M.D., M.P.H., M.T.S.Mililani, HI 967891144219775
  7. Allen Hixon, MDMililani, HI 967891306826151
  8. Aaron Kauhane, D.O.Mililani, HI 967891528157757

Common questions

What is Seiji Yamada, M.D.'s NPI number?

Seiji Yamada, M.D.'s National Provider Identifier (NPI) is 1245300904, issued on Nov 9, 2006. An NPI identifies a provider in billing; it is not a license.

Where is Seiji Yamada, M.D. located?

The NPPES record lists a practice address at 95-390 Kuahelani Ave, Mililani, HI, 96789. Phone: (808) 627-3200. Providers update this record themselves, so call before visiting.

How can I verify Seiji Yamada, M.D.'s license?

NPPES lists Hawaii license number MD - 8582, as entered by the provider. Search the Hawaii Medical Board at https://cca.hawaii.gov/pvl/boards/medical/. The NPPES record confirms identity only; the state search shows license status, expiration and public orders.

How much does Seiji Yamada, M.D. prescribe under Medicare Part D?

In 2024, Seiji Yamada, M.D. had 1,362 Medicare Part D claims for 309 beneficiaries; the average among family medicine physician prescribers was 3,544. Part D covers Medicare prescriptions only.

What is Seiji Yamada, M.D.'s MIPS final score?

The 2023 MIPS final score is 86.3 of 100, reported for the practice group. The average among 454,083 clinicians with a measured score was 83.5.

Source: CMS National Plan and Provider Enumeration System (NPPES), file of Aug 9, 2026 (NPPES files on CMS.gov); NUCC Health Care Provider Taxonomy. Medicare files from data.cms.gov. An NPI identifies who bills; it is not a license.

Figures on PlainDoctor are read from the federal files each page names (CMS NPPES, Medicare Part D, MIPS, Open Payments; the HHS-OIG exclusion list only as counts) and from Census population estimates, with the file date shown beside them. See our editorial standards & corrections policy, the methodology behind these numbers, or report a data error. Data current as of Aug 9, 2026.