Joseph K. Kamaka, M.D.
Internal Medicine Physician · Wailuku, HI
Joseph K. Kamaka, M.D. is an internal medicine physician with a practice address in Wailuku, Hawaii, and NPI 1023042603, issued on Jul 10, 2006. Check the license (Hawaii 5022, as entered in NPPES) on the Hawaii Medical Board; the Medicare figures below come from public CMS files.
- Name
- Joseph K. Kamaka
- Credential
- M.D.
- Primary taxonomy
- Internal Medicine Physician 207R00000X
- License number
- 5022 HI
Self-reported in NPPES; status is on the state search - Practice location
- 99 South Market Street, Wailuku, HI 96793
- Phone
- (808) 244-5551
- Enumerated
- Jul 10, 2006
- Record last updated
- Jul 9, 2007 (not updated in 19 years: call before relying on the address or phone)
- Fax
- (808) 242-0058
- Medicaid ID
- 01596001 HI
- Medicare enrollment
- Enrolled (PECOS I20100924000188); accepts Medicare assignment
- Medical or professional school
- University Of Hawaii John A. Burns School Of Medicine, 1981
- Entity
- Type 1 · individual
8 nearest internal medicine physician records → All 902 in Hawaii → Look up another NPI →
Verify Joseph K. Kamaka in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersHawaii Medical Board
Search for license 5022Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
10% fewer Medicare Part D claims than the average internal medicine physician in 2024
2,864 Medicare Part D claims for 147 beneficiaries, against an average of 3,176 among the 108,855 providers of this specialty who prescribed in Part D. Brand-name drugs were 11% of claims. 238 claims were for opioids.
Most prescribed
- Atorvastatin Calcium214 claims
- Hydrocodone-Acetaminophen170 claims
- Lisinopril154 claims
- Metoprolol Succinate151 claims
- Rosuvastatin Calcium94 claims
- Amlodipine Besylate92 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.
Industry payments in 2024: $24.69
1 payment: 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.
Joseph K. Kamaka among 902 internal medicine physician records in Hawaii
Joseph K. Kamaka, 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 2006, is newer than 4% of them.
- NPI issued2006 · 4% of these records are older, 55% newer
- In a Medicare fileYes · 71% of these records are
- In the CMS Doctors and Clinicians fileYes · 54% of these records are
- Graduated1981 · median 2001 among the 491 with a school on file
- Record last updated2007 · 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 Joseph K. Kamaka, M.D.'s NPI number?
Joseph K. Kamaka, M.D.'s National Provider Identifier (NPI) is 1023042603, issued on Jul 10, 2006. An NPI identifies a provider in billing; it is not a license.
Where is Joseph K. Kamaka, M.D. located?
The NPPES record lists a practice address at 99 South Market Street, Wailuku, HI, 96793. Phone: (808) 244-5551. Providers update this record themselves, so call before visiting.
How can I verify Joseph K. Kamaka, M.D.'s license?
NPPES lists Hawaii license number 5022, 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 Joseph K. Kamaka, M.D. prescribe under Medicare Part D?
In 2024, Joseph K. Kamaka, M.D. had 2,864 Medicare Part D claims for 147 beneficiaries; the average among internal medicine physician prescribers was 3,176. Part D covers Medicare prescriptions only.
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.