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KENJI HAMANAKA M.D.
NPI 1700170677
Emergency Medicine in Sioux Falls, SD

Active since June 08, 2011PECOS Enrolled
76.69/100
CMS Quality Rating
1305 W 18TH ST, SIOUX FALLS, SD 57105(605) 333-6688 Get Directions Write a Review

NPPES record last updated: September 10, 2016. Verified against the NPPES registry weekly; last sync: October 18, 2026.

About Kenji Hamanaka M.d. NPPES

Official registry information on file with the National Plan and Provider Enumeration System.

KENJI HAMANAKA M.D. (NPI 1700170677) is an individual emergency medicine provider in Sioux Falls, South Dakota, licensed in South Dakota (9846) and active in the NPI registry since June 2011. He is enrolled in Medicare PECOS.

NPPES Registry Identity

NPI1700170677
Entity TypeIndividualMale
Primary Taxonomy207P00000X
Provider Legal NameKENJI HAMANAKACredential: M.D.
Location Address1305 W 18TH STSioux Falls, SD 57105-0401
Mailing Address1305 W 18th StSioux Falls, SD 57105-0401 · (605) 333-6688
Phone(605) 333-6688
Sole ProprietorYes
Enumeration DateJune 8, 2011
Last NPPES UpdateSeptember 10, 2016
✔ NPI 1700170677 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses

★ Primary SpecialtyEmergency MedicineAllopathic & Osteopathic Physicians
Taxonomy Code207P00000X
License✔ Licensed in SD · 9846
Definition
An emergency physician focuses on the immediate decision making and action necessary to prevent death or any further disability both in the pre-hospital setting by directing emergency medical technicians and in the emergency department. The emergency physician provides immediate recognition, evaluation, care, stabilization and disposition of a generally diversified population of adult and pediatric patients in response to acute illness and injury.
1305 W 18TH ST, Sioux Falls, SD 57105
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Accepted Insurance

The full list of accepted plans is on the Insurance tab. Issuers include Sanford Health Plan, Wellmark Health Plan of Iowa, Inc., Wellmark of South Dakota, Inc..Insurance ›

Medicare Participation & PECOS CMS

Medicare enrollment, assignment, billing reassignment, and ordering and referring status from CMS.

Medicare Enrollment Status

✔

Enrolled in Medicare (PECOS)

Kenji Hamanaka M.d. is registered in the CMS Provider Enrollment, Chain and Ownership System (PECOS).

Eligible to Order & Refer✔ Part B Labs & Imaging✔ Durable Medical Equipment✔ Home Health Agency✔ Power Mobility DevicesPer the CMS Ordering and Referring file. Eligibility means Medicare pays claims that this provider orders or refers for these categories.

Medicare Billing Reassignment

Medicare enrollment records show Kenji Hamanaka reassigns Medicare billing to 1 organization. The organization bills Medicare for the services this provider delivers there.

Sanford Medical Center
0.7 mi
Family Medicine
1420 W 22NDST STE 104
Sioux Falls, SD 57105
  • Reassigned Medicare billing, South Dakota enrollment
  • 1,097 clinicians in this Medicare group
NPI 1093090342 (605) 328-4897

Source: CMS Revalidation Reassignment List, October 2026 release. Reassignment records can lag staffing changes; confirm a current affiliation with the organization.

Areas of Expertise CMS Part B claims 4

Services this provider delivered to Medicare fee-for-service patients, from the CMS Medicare utilization data. Higher counts generally reflect more experience with a service; care delivered outside Medicare is not included.

Emergency department visit with high level of medical decision making 99285
An emergency department visit for severe conditions is when you urgently seek medical help due to serious health issues. These could be severe injuries, breathing problems, unbearable pain, or sudden severe illness. Doctors and nurses will provide immediate care to stabilize your condition.
191 services191 patients
Routine electrocardiogram (ecg) using at least 12 leads with interpretation and report only 93010
A routine electrocardiogram (ECG) with 12 leads is a simple, non-invasive test that records the electrical activity of your heart. It helps in identifying heart conditions by detecting irregularities in your heart rhythms. The results are interpreted and a report is provided.
119 services115 patients
Emergency department visit with moderate level of medical decision making 99284
An emergency department visit for a high-severity issue means you're experiencing a serious health problem that needs immediate attention. This could be a severe injury, serious illness, or life-threatening condition. Medical professionals will provide urgent care to stabilize your condition.
36 services35 patients
Critical care, first 30-74 minutes 99291
Critical care involves immediate and constant attention by a team of specially-trained health professionals. It's for patients with life-threatening conditions, requiring first 30-74 minutes of intense monitoring and treatment.
22 services22 patients

Physician Visit Costs CMS claims · ZIP area

Typical Medicare office-visit costs in the 57105 ZIP code area, from fee-for-service claims. These are area statistics, not this provider’s prices; actual charges vary by service and coverage.

New Patient
$85.21 typical visit price
range $55.52 – $167.23
Typical copayment $21.30 (range $13.88 – $41.80)
Most-billed visit code 99203
Established Patient
$97.88 typical visit price
range $18.08 – $137.08
Typical copayment $24.47 (range $4.52 – $34.27)
Most-billed visit code 99214
Amounts reflect what Medicare beneficiaries in this ZIP area are typically charged for office visits. Patients with other coverage should check their individual plans.

Medicare Quality Performance CMS QPP · MIPS

Performance in the CMS Quality Payment Program: the MIPS final score across four weighted categories, and the individual quality measures reported to Medicare.

76.69/100
MIPS Final ScoreMerit-based Incentive Payment System · CMS Quality Payment Program
Scored as part of a group practice
Quality78.56
Promoting Interoperability99
Improvement Activities40
Cost44.56

Other Providers at the Same Location NPPES 20

Providers registered at the same practice address, or within the immediate area, according to the NPPES registry.

JEDD D BIALAS CRNA
Nurse Anesthetist, Certified Registered
1305 W 18TH ST
SIOUX FALLS, SD 57105
Minnehaha County (605) 333-1000
AARON DANIEL MORTENSEN CRNA
Nurse Anesthetist, Certified Registered
1305 W 18TH ST
SIOUX FALLS, SD 57105
Minnehaha County (605) 333-1000
DR. JULIANA JOHNSON FERRI GUERRA MD
Internal Medicine (Endocrinology, Diabetes & Metabolism)
1305 W 18TH ST
SIOUX FALLS, SD 57105
Minnehaha County (605) 328-8700
PAUL E GILMORE CRNA
Nurse Anesthetist, Certified Registered
1305 W 18TH ST
SIOUX FALLS, SD 57105
Minnehaha County (605) 333-1000
BETH ABRAHAMSON
Nurse Practitioner (Neonatal)
1305 W 18TH ST
SIOUX FALLS, SD 57105
Minnehaha County (605) 328-3006
RYAN LAWRENCE TENNANT CNP
Nurse Practitioner
1305 W 18TH ST
SIOUX FALLS, SD 57105
Minnehaha County (605) 333-1000
LCM PATHOLOGISTS PC
Pathology (Anatomic Pathology & Clinical Pathology)
1305 W 18TH ST
SIOUX FALLS, SD 57105
Minnehaha County (800) 284-9806
ARLEIGH TRAINOR MD
Emergency Medicine
1305 W 18TH ST
SIOUX FALLS, SD 57105
Minnehaha County (605) 333-1000

Frequently Asked Questions NPPES & CMS

Common questions about this NPI record, answered from the official NPPES registry and CMS datasets shown on this page.

What is Kenji Hamanaka's NPI number?

The NPI number for Kenji Hamanaka is 1700170677. It was assigned to this individual provider in the NPPES registry on June 8, 2011.

Where is Kenji Hamanaka located?

Kenji Hamanaka practices at 1305 W 18th St, Sioux Falls, SD 57105. The listed phone number is (605) 333-6688.

What is Kenji Hamanaka's specialty?

The primary specialty registered for this NPI is Emergency Medicine with taxonomy code 207P00000X.

Is Kenji Hamanaka enrolled in Medicare?

Yes. Kenji Hamanaka is registered in the Medicare PECOS enrollment system.

Which organization bills Medicare for Kenji Hamanaka's services?

According to the CMS Revalidation Reassignment List (October 2026 release), Kenji Hamanaka reassigns Medicare benefits to Sanford Medical Center (Sioux Falls, SD). The reassignment is filed with Medicare on form CMS-855R, signed by both the clinician and the organization, and lets the organization bill Medicare and receive payment for Kenji Hamanaka's services. Reassignment records can lag staffing changes; confirm current arrangements with the organization.

What insurance does Kenji Hamanaka accept?

Health plans from Sanford Health Plan, Wellmark Health Plan of Iowa, Inc. and Wellmark of South Dakota, Inc. list Kenji Hamanaka as in-network in at least one marketplace plan. Coverage varies by plan and year; verify with the insurer or the provider before a visit.

When was this NPI record last updated?

The NPPES record for Kenji Hamanaka was last updated on September 10, 2016. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 10 years ago. If this record has changed at CMS more recently, you can request an on-demand re-check against the live CMS registry, directly from this page.