KELLI L GREENFIELD CNP
NPI 1609259449
Nurse Practitioner in Sioux Falls, SD
About Kelli L Greenfield Cnp NPPES
Official registry information on file with the National Plan and Provider Enumeration System.
KELLI L GREENFIELD CNP (NPI 1609259449) is an individual nurse practitioner in Sioux Falls, South Dakota, licensed in South Dakota (CP000959) and active in the NPI registry since June 2015. She is enrolled in Medicare PECOS, is affiliated with Avera St Mary's Hospital, and is a graduate of Other (2015).
NPPES Registry Identity
Specialties & Licenses
Other Names 1
Accepted Insurance
Medicare Participation & PECOS CMS
Medicare enrollment, assignment, billing reassignment, and ordering and referring status from CMS.
Medicare Enrollment Status
Enrolled in Medicare and accepts Medicare assignment
Kelli L Greenfield Cnp is registered in PECOS and agrees to accept the Medicare-approved amount as full payment. Medicare patients are not billed beyond the standard deductible and coinsurance.
Medicare Billing Reassignments
2Medicare enrollment records show Kelli Greenfield reassigns Medicare billing to 2 organizations. Each organization bills Medicare for the services this provider delivers there; the nearest is listed first.
Sioux Falls, SD 57108
- Reassigned Medicare billing, South Dakota enrollment
- 61 clinicians in this Medicare group
Gregory, SD 57533
- Reassigned Medicare billing, South Dakota enrollment
- 20 clinicians in this Medicare group
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 6
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.
Hospital Affiliations CMS Care Compare 4
Hospitals where this provider delivers care, identified from recent Medicare claims and place-of-service records.
Avera St Mary's Hospital
Acute Care Hospitals · Pierre, SDAvera Heart Hospital Of South Dakota
Acute Care Hospitals · Sioux Falls, SDAvera Hand County Memorial Hospital And Clinic
Critical Access Hospitals · Miller, SDAvera Gregory Hospital
Critical Access Hospitals · Gregory, SDPhysician Visit Costs CMS claims · ZIP area
Typical Medicare office-visit costs in the 57108 ZIP code area, from fee-for-service claims. These are area statistics, not this provider’s prices; actual charges vary by service and coverage.
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.
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.
SIOUX FALLS, SD 57108
SIOUX FALLS, SD 57108
SIOUX FALLS, SD 57108
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 Kelli Greenfield's NPI number?
The NPI number for Kelli Greenfield is 1609259449. It was assigned to this individual provider in the NPPES registry on June 29, 2015. The provider is also known as Kelli L Kartak Cnp.
Where is Kelli Greenfield located?
Kelli Greenfield practices at 4520 W 69th St, Sioux Falls, SD 57108. The listed phone number is (605) 977-5000.
What is Kelli Greenfield's specialty?
The primary specialty registered for this NPI is Nurse Practitioner with taxonomy code 363L00000X.
Is Kelli Greenfield enrolled in Medicare?
Yes. Kelli Greenfield is registered in the Medicare PECOS system and accepts Medicare assignment, which means accepting the Medicare-approved amount as payment in full for covered services.
Which organizations bill Medicare for Kelli Greenfield's services?
According to the CMS Revalidation Reassignment List (October 2026 release), Kelli Greenfield reassigns Medicare benefits to 2 organizations: Heart Hospital Of South Dakota LLC (Sioux Falls, SD) and Avera Mckennan (Gregory, SD). Each 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 Kelli Greenfield's services. Reassignment records can lag staffing changes; confirm current arrangements with the organization.
What insurance does Kelli Greenfield accept?
Health plans from Ambetter Health, Ambetter Health of Delaware, Ambetter from Sunflower Health Plan, Avera Health Plans and Oscar Insurance Company and 3 other insurers list Kelli Greenfield 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.
Is Kelli Greenfield affiliated with any hospitals?
According to CMS data, Kelli Greenfield is affiliated with Avera St Mary's Hospital, Avera Heart Hospital Of South Dakota, Avera Hand County Memorial Hospital And Clinic and Avera Gregory Hospital.
When was this NPI record last updated?
The NPPES record for Kelli Greenfield was last updated on January 2, 2024. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 2 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.
# Kelli L Greenfield, CNP · NPI 1609259449
Nurse Practitioner physician in Sioux Falls, South Dakota. Individual provider, active in the CMS NPPES registry since June 29, 2015.
## Identity
- **NPI:** 1609259449 (Entity type: Individual)
- **Enumerated:** June 29, 2015
- **Primary specialty:** Nurse Practitioner · taxonomy 363L00000X
- **State license:** CP000959 (South Dakota)
- **Sole proprietor:** No
## Practice location
- **Address:** 4520 W 69TH ST, Sioux Falls, SD 57108-8148
- **Phone:** (605) 977-5000 · **Fax:** (605) 977-5377
## Medicare
- **Medicare:** Enrolled (PECOS); accepts Medicare assignment
- **Ordering & referring:** eligible for Part B labs & imaging, durable medical equipment, home health, power mobility devices
- **Bills Medicare through:** 2 organizations under Medicare reassignment (form CMS-855R): Heart Hospital Of South Dakota LLC (NPI 1407109705, Sioux Falls, SD); Avera Mckennan (NPI 1275562027, Gregory, SD) · CMS Revalidation Reassignment List, October 2026 release
- **Medical school:** Other, class of 2015
## Record status
- **NPPES last updated:** January 2, 2024
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Source: [NPI Profile](https://npiprofile.com/npi/1609259449) · Data from the CMS NPPES public registry.