Gregory Y. Dunn, M.D.
Diagnostic Radiology Physician · Honolulu, HI
Gregory Y. Dunn, M.D. is a diagnostic radiology physician with a practice address in Honolulu, Hawaii, and NPI 1700901212, issued on Mar 21, 2007. Check the license (Hawaii MD15853, as entered in NPPES) on the Hawaii Medical Board; the Medicare figures below come from public CMS files.
- Name
- Gregory Y. Dunn
- Credential
- M.D.
- Primary taxonomy
- Diagnostic Radiology Physician 2085R0202X
- License numbers
- MD15853 HI
A84927 CA
Self-reported in NPPES; status is on the state search - Practice location
- 321 N Kuakini St, Honolulu, HI 96817
- Phone
- (808) 522-0190
- Enumerated
- Mar 21, 2007
- Record last updated
- Jan 18, 2011 (not updated in 15 years: call before relying on the address or phone)
- Fax
- (808) 523-9068
- Medicaid IDs
- 64773701 HI
00A849270 CA
64773702 HI - Medicare enrollment
- Enrolled (PECOS I20101108001056); accepts Medicare assignment
- Medical or professional school
- University Of California, Geffen School Of Medicine, 2002
- Entity
- Type 1 · individual
8 nearest diagnostic radiology physician records → All 166 in Hawaii → Look up another NPI →
Also registered at 321 N Kuakini St
A shared address usually means a shared clinic or building; it does not show who employs whom.
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Verify Gregory Y. Dunn in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersHawaii Medical Board
Search for license MD15853Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
The MIPS final score for 2023 (Medicare payment program): 57.6 of 100
The Merit-based Incentive Payment System score is reported for this clinician. Four categories are weighted into the final score; the average among 454,083 clinicians with a measured score was 83.5.
Source: CMS Quality Payment Program, MIPS performance year 2023; category weights for 2023 (qpp.cms.gov).
Bills Medicare through one group practice
- Pacific Radiology Group IncKailua, HI
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
Gregory Y. Dunn among 166 diagnostic radiology physician records in Hawaii
Gregory Y. Dunn, M.D. is one of 166 diagnostic radiology physician records with a practice address in Hawaii. 60% of them appear in a Medicare file (Part D prescribing, MIPS, Open Payments or Medicare group billing); this one does. Its NPI, issued in 2007, is newer than 66% of them.
- NPI issued2007 · 66% of these records are older, 25% newer
- In a Medicare fileYes · 60% of these records are
- In the CMS Doctors and Clinicians fileYes · 55% of these records are
- Graduated2002 · median 2002 among the 91 with a school on file
- Record last updated2011 · 66% of these records were not updated in five years or more
Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 2085R0202X and a Hawaii practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
Diagnostic Radiology Physician providers in Hawaii
There are 166 diagnostic radiology physician records in Hawaii.
All 166 in Hawaii → Every provider in Honolulu → Diagnostic Radiology Physician nationwide →
The 8 diagnostic radiology physician records with the nearest ZIP codes
- Andy Aoki, M.D.Honolulu, HI 968171558326629
- Howard Arimoto, M.D.Honolulu, HI 968171033174818
- Andy Chon, MDHonolulu, HI 968171093978538
- Alvin Ikeda, M.D.Honolulu, HI 968171831154905
- Stephen Ko, M.D.Honolulu, HI 968171972568236
- Donn Kumasaki, M.D.Honolulu, HI 968171588629364
- Gordon Ng, M.D.Honolulu, HI 968171154386415
- Heather Penney, MDHonolulu, HI 968171639226053
Common questions
What is Gregory Y. Dunn, M.D.'s NPI number?
Gregory Y. Dunn, M.D.'s National Provider Identifier (NPI) is 1700901212, issued on Mar 21, 2007. An NPI identifies a provider in billing; it is not a license.
Where is Gregory Y. Dunn, M.D. located?
The NPPES record lists a practice address at 321 N Kuakini St, Honolulu, HI, 96817. Phone: (808) 522-0190. Providers update this record themselves, so call before visiting.
How can I verify Gregory Y. Dunn, M.D.'s license?
NPPES lists Hawaii license number MD15853, 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.
What is Gregory Y. Dunn, M.D.'s MIPS final score?
The 2023 MIPS final score is 57.6 of 100. 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.