Gregory Park, M.D.
Internal Medicine Physician · Wailuku, HI
Gregory Park, M.D. is an internal medicine physician with a practice address in Wailuku, Hawaii, and NPI 1861497596, issued on Jun 17, 2005. Check the license (Hawaii MD3915, as entered in NPPES) on the Hawaii Medical Board; the Medicare figures below come from public CMS files.
- Name
- Gregory Park
- Credential
- M.D.
- Primary taxonomy
- Internal Medicine Physician 207R00000X
- License number
- MD3915 HI
Self-reported in NPPES; status is on the state search - Practice location
- 30 N Church St, Wailuku, HI 96793
- Phone
- (808) 244-7627
- Enumerated
- Jun 17, 2005
- Record last updated
- Jul 13, 2026
- Fax
- (808) 242-6696
- Medicaid ID
- 04550602 HI
- Medicare enrollment
- Enrolled (PECOS I20040614001422); may accept Medicare assignment
- Medical or professional school
- Albert Einstein College Of Medicine Of Yeshiva University, 1975
- Telehealth
- Offers telehealth (CMS)
- Entity
- Type 1 · individual
8 nearest internal medicine physician records → All 902 in Hawaii → Look up another NPI →
Also registered at 30 N Church St
A shared address usually means a shared clinic or building; it does not show who employs whom.
- Robin Hallman, MDStudent in an Organized Health Care Education/Training Program1144485947
Verify Gregory Park in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersHawaii Medical Board
Search for license MD3915Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
58% more Medicare Part D claims than the average internal medicine physician in 2024
5,008 Medicare Part D claims for 295 beneficiaries, against an average of 3,176 among the 108,855 providers of this specialty who prescribed in Part D. Brand-name drugs were 13% of claims. 160 claims were for opioids.
Most prescribed
- Rosuvastatin Calcium184 claims
- Atorvastatin Calcium164 claims
- Losartan Potassium152 claims
- Levothyroxine Sodium128 claims
- Metoprolol Succinate113 claims
- Azithromycin107 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.
No measured MIPS final score for 2023
CMS assigned the neutral MIPS final score of 75 without scoring Quality, Cost, Promoting Interoperability or Improvement Activities. It is an administrative threshold, so PlainDoctor does not compare it with measured clinicians.
Source: CMS Quality Payment Program, MIPS performance year 2023; category weights for 2023 (qpp.cms.gov).
Industry payments in 2024: $73.56
3 payments; by number, the most common kind was food and beverage; the largest payer was Lilly USA, LLC. The 50,334 providers of this specialty with any payment received $1,303.06 on average. Payments are reported by manufacturers, not by the provider, and are not a sign of wrongdoing.
Source: CMS Open Payments, program year 2024 (openpaymentsdata.cms.gov); average among providers of this specialty with at least one payment.
Bills Medicare through one group practice
- Wailea Medical Group LLCWailea, HI
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
Gregory Park among 902 internal medicine physician records in Hawaii
Gregory Park, M.D. is one of 902 internal medicine physician records with a practice address in Hawaii. 71% of them appear in a Medicare file (Part D prescribing, MIPS, Open Payments or Medicare group billing); this one does. Its NPI, issued in 2005, is newer than 0% of them.
- NPI issued2005 · 0% of these records are older, 96% newer
- In a Medicare fileYes · 71% of these records are
- In the CMS Doctors and Clinicians fileYes · 54% of these records are
- Graduated1975 · median 2001 among the 491 with a school on file
- Record last updated2026 · 63% of these records were not updated in five years or more
Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 207R00000X and a Hawaii practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
39 internal medicine physician records list a practice address in Wailuku
They are 39 of the 1,087 NPPES records with a practice address in Wailuku, and 902 internal medicine physician records in Hawaii.
All 902 in Hawaii → Every provider in Wailuku → Internal Medicine Physician nationwide →
The 8 internal medicine physician records with the nearest ZIP codes
- Nolan Arruda, M.D.Wailuku, HI 967931043242209
- Victoria Babushkina, MDWailuku, HI 967931972568483
- Daniel Garcia, M.D.Wailuku, HI 967931689699449
- Russell Garn, M.D.Wailuku, HI 967931033134804
- Paul Grandon, MDWailuku, HI 967931215908959
- Arpana Gupta, MDWailuku, HI 967931285668624
- Kristen Gutermuth, M.D.Wailuku, HI 967931558386243
- Heather Haynes, M.D.Wailuku, HI 967931487664587
Common questions
What is Gregory Park, M.D.'s NPI number?
Gregory Park, M.D.'s National Provider Identifier (NPI) is 1861497596, issued on Jun 17, 2005. An NPI identifies a provider in billing; it is not a license.
Where is Gregory Park, M.D. located?
The NPPES record lists a practice address at 30 N Church St, Wailuku, HI, 96793. Phone: (808) 244-7627. Providers update this record themselves, so call before visiting.
How can I verify Gregory Park, M.D.'s license?
NPPES lists Hawaii license number MD3915, 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 Gregory Park, M.D. prescribe under Medicare Part D?
In 2024, Gregory Park, M.D. had 5,008 Medicare Part D claims for 295 beneficiaries; the average among internal medicine physician prescribers was 3,176. Part D covers Medicare prescriptions only.
What is Gregory Park, M.D.'s MIPS final score?
CMS assigned the neutral MIPS final score of 75 for 2023 without scoring any category, so it is not a measured result.
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.