James Ken Okamoto, MD
Family Medicine Physician · Waipahu, HI
James Ken Okamoto, MD is a family medicine physician with a practice address in Waipahu, Hawaii, and NPI 1073596250, issued on Nov 22, 2005. Check the license (Hawaii MD15243, as entered in NPPES) on the Hawaii Medical Board; the Medicare figures below come from public CMS files.
- Name
- James Ken Okamoto
- Credential
- MD
- Primary taxonomy
- Family Medicine Physician 207Q00000X
- License numbers
- MD15243 HI
15243 HI
MD00032858 WA
Self-reported in NPPES; status is on the state search - Practice location
- 94-849 Lumiaina St, Waipahu, HI 96797
- Phone
- (808) 677-8222
- Enumerated
- Nov 22, 2005
- Record last updated
- Jun 10, 2024
- Fax
- (808) 677-8333
- Medicaid ID
- 8181885 WA
- Medicare enrollment
- Enrolled (PECOS I20110106000333); accepts Medicare assignment
- Medical or professional school
- University Of Nebraska College Of Medicine, 1992
- Entity
- Type 1 · individual
8 nearest family medicine physician records → All 730 in Hawaii → Look up another NPI →
Also registered at 94-849 Lumiaina St
A shared address usually means a shared clinic or building; it does not show who employs whom.
- Cherielyne De Leon, PHARMD, RPHPharmacist1750994745
- Mark Tafoya, MDOphthalmology Physician1639233448
Verify James Ken Okamoto in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersHawaii Medical Board
Search for license MD15243Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
81% fewer Medicare Part D claims than the average family medicine physician in 2024
689 Medicare Part D claims for 50 beneficiaries, against an average of 3,544 among the 117,163 providers of this specialty who prescribed in Part D. 15 claims were for opioids.
Most prescribed
- Rosuvastatin Calcium35 claims
- Atorvastatin Calcium33 claims
- Levothyroxine Sodium32 claims
- Tamsulosin Hcl31 claims
- Amlodipine Besylate29 claims
- Losartan Potassium23 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: $111.29
5 payments; by number, the most common kind was food and beverage; the largest payer was Novo Nordisk Inc. 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.
Source: CMS Open Payments, program year 2024 (openpaymentsdata.cms.gov); average among providers of this specialty with at least one payment.
James Ken Okamoto among 730 family medicine physician records in Hawaii
James Ken Okamoto, MD 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 2005, is newer than 0% of them.
- NPI issued2005 · 0% of these records are older, 92% newer
- In a Medicare fileYes · 65% of these records are
- In the CMS Doctors and Clinicians fileYes · 53% of these records are
- Graduated1992 · median 2006 among the 383 with a school on file
- Record last updated2024 · 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 Waipahu
They are 31 of the 1,605 NPPES records with a practice address in Waipahu, and 730 family medicine physician records in Hawaii.
All 730 in Hawaii → Every provider in Waipahu → Family Medicine Physician nationwide →
The 8 family medicine physician records with the nearest ZIP codes
- William Ahuna, MDWaipahu, HI 967971144314683
- William Clevenger, MDWaipahu, HI 967971821161746
- Emilani Crow, MDWaipahu, HI 967971124073184
- Benjamin Gozun, M.D.Waipahu, HI 967971598853012
- Christina Lee, MDWaipahu, HI 967971538244058
- Inesa Levitz, MDWaipahu, HI 967971720028533
- Howard NeudorfWaipahu, HI 967971740267145
- Paz Nuanez, M.D.Waipahu, HI 967971659320307
Common questions
What is James Ken Okamoto, MD's NPI number?
James Ken Okamoto, MD's National Provider Identifier (NPI) is 1073596250, issued on Nov 22, 2005. An NPI identifies a provider in billing; it is not a license.
Where is James Ken Okamoto, MD located?
The NPPES record lists a practice address at 94-849 Lumiaina St, Waipahu, HI, 96797. Phone: (808) 677-8222. Providers update this record themselves, so call before visiting.
How can I verify James Ken Okamoto, MD's license?
NPPES lists Hawaii license number MD15243, 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 James Ken Okamoto, MD prescribe under Medicare Part D?
In 2024, James Ken Okamoto, MD had 689 Medicare Part D claims for 50 beneficiaries; the average among family medicine physician prescribers was 3,544. 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.