Kenji Hamanaka, M.D.
Emergency Medicine Physician · Sioux Falls, SD
Kenji Hamanaka, M.D. is an emergency medicine physician with a practice address in Sioux Falls, South Dakota, and NPI 1700170677, issued on Jun 8, 2011. Check the license (South Dakota 9846, as entered in NPPES) on the South Dakota Board of Medical and Osteopathic Examiners; the Medicare figures below come from public CMS files.
- Name
- Kenji Hamanaka
- Credential
- M.D.
- Primary taxonomy
- Emergency Medicine Physician 207P00000X
- License number
- 9846 SD
Self-reported in NPPES; status is on the state search - Practice location
- 1305 W 18TH St, Sioux Falls, SD 57105
- Phone
- (605) 333-6688
- Enumerated
- Jun 8, 2011
- Record last updated
- Sep 10, 2016 (not updated in 10 years: call before relying on the address or phone)
- Entity
- Type 1 · individual
8 nearest emergency medicine physician records → All 122 in South Dakota → Look up another NPI →
Also registered at 1305 W 18TH St
A shared address usually means a shared clinic or building; it does not show who employs whom.
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- Sameer Ahmed, MDHospitalist Physician1619549292
- Swetha Alapati, MDHospitalist Physician1982051421
- Joseph Alex, MDEmergency Medicine Physician1407484819
Verify Kenji Hamanaka in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersSouth Dakota Board of Medical and Osteopathic Examiners
Search for license 9846Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
68% fewer Medicare Part D claims than the average emergency medicine physician in 2024
72 Medicare Part D claims for 45 beneficiaries, against an average of 226 among the 54,106 providers of this specialty who prescribed in Part D. Brand-name drugs were 0% of claims. 18 claims were for opioids.
Most prescribed
- Lisinopril13 claims
- Oxycodone Hcl11 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): 76.7 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.
Source: CMS Quality Payment Program, MIPS performance year 2023, group reporting; category weights for 2023 (qpp.cms.gov).
Kenji Hamanaka among 122 emergency medicine physician records in South Dakota
Kenji Hamanaka, M.D. is one of 122 emergency medicine physician records with a practice address in South Dakota. 80% of them appear in a Medicare file (Part D prescribing, MIPS, Open Payments or Medicare group billing); this one does. Its NPI, issued in 2011, is newer than 65% of them.
- NPI issued2011 · 65% of these records are older, 30% newer
- In a Medicare fileYes · 80% of these records are
- In the CMS Doctors and Clinicians fileNo · 38% of these records are
- Record last updated2016 · 62% of these records were not updated in five years or more
Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 207P00000X and a South Dakota practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
Emergency Medicine Physician providers in South Dakota
There are 122 emergency medicine physician records in South Dakota.
All 122 in South Dakota → Every provider in Sioux Falls → Emergency Medicine Physician nationwide →
The 8 emergency medicine physician records with the nearest ZIP codes
- John Belk, DOSioux Falls, SD 571051346254984
- Shelley Driver, MDSioux Falls, SD 571051942210679
- Donald Ellis, MDSioux Falls, SD 571051326048760
- Jared Friedman, MDSioux Falls, SD 571051306852694
- Robert Harms, MDSioux Falls, SD 571051942210687
- Donald Kosiak, MDSioux Falls, SD 571051073541215
- Beth Lapka, MDSioux Falls, SD 571051497765937
- Lucas Mailander, MDSioux Falls, SD 571051093742934
Common questions
What is Kenji Hamanaka, M.D.'s NPI number?
Kenji Hamanaka, M.D.'s National Provider Identifier (NPI) is 1700170677, issued on Jun 8, 2011. An NPI identifies a provider in billing; it is not a license.
Where is Kenji Hamanaka, M.D. located?
The NPPES record lists a practice address at 1305 W 18TH St, Sioux Falls, SD, 57105. Phone: (605) 333-6688. Providers update this record themselves, so call before visiting.
How can I verify Kenji Hamanaka, M.D.'s license?
NPPES lists South Dakota license number 9846, as entered by the provider. Search the South Dakota Board of Medical and Osteopathic Examiners at https://www.sdbmoe.gov/. The NPPES record confirms identity only; the state search shows license status, expiration and public orders.
How much does Kenji Hamanaka, M.D. prescribe under Medicare Part D?
In 2024, Kenji Hamanaka, M.D. had 72 Medicare Part D claims for 45 beneficiaries; the average among emergency medicine physician prescribers was 226. Part D covers Medicare prescriptions only.
What is Kenji Hamanaka, M.D.'s MIPS final score?
The 2023 MIPS final score is 76.7 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.