NPPES file of Aug 9, 2026

Mari Ikeguchi, M.D.

Gastroenterology Physician · Honolulu, HI

Mari Ikeguchi, M.D. is a gastroenterology physician with a practice address in Honolulu, Hawaii, and NPI 1962589218, issued on Nov 1, 2006. Check the license (Hawaii MD-13912, 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
1962589218
Name
Mari Ikeguchi
Credential
M.D.
Primary taxonomy
Gastroenterology Physician 207RG0100X
License number
MD-13912 HI
Self-reported in NPPES; status is on the state search
Practice location
888 S King St, Honolulu, HI 96813
Phone
(808) 522-4000
Enumerated
Nov 1, 2006
Record last updated
Jul 8, 2007 (not updated in 19 years: call before relying on the address or phone)
Medicare enrollment
Enrolled (PECOS I20050720000014); accepts Medicare assignment
Medical or professional school
Columbia University College Of Physicians And Surgeons, 1999
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.
Download card Updates feed

Also registered at 888 S King St

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

  1. Ayman Abdul-Ghani, M.D.Thoracic Surgery (Cardiothoracic Vascular Surgery) Physician1548449218
  2. Cedric Akau, M.D.Physical Medicine & Rehabilitation Physician1437254034
  3. Christopher Apostolides, PAPhysician Assistant1083655153
  4. Stephen Arnold, M.D.Internal Medicine Physician1598859928
  5. Swaty Arora, MDHematology & Oncology Physician1194037432
  6. Whitney Reigh Asao, OTD, OTR/LOccupational Therapist1568082766

Verify Mari Ikeguchi in five checks

  1. 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
  2. 2LicenseActive license and public ordersHawaii Medical Board
    Search for license MD-13912
    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.

Is this page about you? You can ask us to correct, restrict or remove it: how.

22% fewer Medicare Part D claims than the average gastroenterology physician in 2024

631 Medicare Part D claims for 305 beneficiaries, against an average of 811 among the 16,445 providers of this specialty who prescribed in Part D. Brand-name drugs were 11% of claims.

  1. Mari Ikeguchi631
  2. Specialty average811

Most prescribed

  1. Peg 3350-Electrolyte138 claims
  2. Omeprazole118 claims
  3. Gavilyte-G66 claims
  4. Pantoprazole Sodium63 claims
  5. Famotidine29 claims
  6. Mesalamine29 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): 86.2 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 score80.3
  2. Costout of 100 · 30%73.7
  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).

2 hospitals and group practices

  1. Straub Clinic And HospitalHonolulu, HI · Acute Care Hospitals4 of 5 stars
  2. Physician Affiliate Group OF New York PCNew York, NY

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.

Mari Ikeguchi among 81 gastroenterology physician records in Hawaii

Mari Ikeguchi, M.D. is one of 81 gastroenterology physician records with a practice address in Hawaii. 83% 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 7% of them.

  • NPI issued2006 · 7% of these records are older, 40% newer
  • In a Medicare fileYes · 83% of these records are
  • In the CMS Doctors and Clinicians fileYes · 69% of these records are
  • Graduated1999 · median 1999 among the 56 with a school on file
  • Record last updated2007 · 64% of these records were not updated in five years or more

Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 207RG0100X and a Hawaii practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).

Gastroenterology Physician providers in Hawaii

There are 81 gastroenterology physician records in Hawaii.

The 8 gastroenterology physician records with the nearest ZIP codes

  1. Stephen Buto, MDHonolulu, HI 968131962486753
  2. John Falzarano, MDHonolulu, HI 968131558443663
  3. Jonathan Gochu, M.D.Honolulu, HI 968131629058987
  4. James Grobe, MDHonolulu, HI 968131538115019
  5. Kagehito Hayashi, M.D.Honolulu, HI 968131982793451
  6. Rodney Kazama, MDHonolulu, HI 968131619079951
  7. Scott Kuwada, MDHonolulu, HI 968131407946015
  8. Herbert Lim, M.D.Honolulu, HI 968131700892957

Common questions

What is Mari Ikeguchi, M.D.'s NPI number?

Mari Ikeguchi, M.D.'s National Provider Identifier (NPI) is 1962589218, issued on Nov 1, 2006. An NPI identifies a provider in billing; it is not a license.

Where is Mari Ikeguchi, M.D. located?

The NPPES record lists a practice address at 888 S King St, Honolulu, HI, 96813. Phone: (808) 522-4000. Providers update this record themselves, so call before visiting.

How can I verify Mari Ikeguchi, M.D.'s license?

NPPES lists Hawaii license number MD-13912, 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 Mari Ikeguchi, M.D. prescribe under Medicare Part D?

In 2024, Mari Ikeguchi, M.D. had 631 Medicare Part D claims for 305 beneficiaries; the average among gastroenterology physician prescribers was 811. Part D covers Medicare prescriptions only.

What is Mari Ikeguchi, M.D.'s MIPS final score?

The 2023 MIPS final score is 86.2 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.