SINDUJA LAKKUNARAJAH MD
NPI 1801246921
Pediatrics - Adolescent Medicine in Sioux Falls, SD
About Sinduja Lakkunarajah Md NPPES
Official registry information on file with the National Plan and Provider Enumeration System.
SINDUJA LAKKUNARAJAH MD (NPI 1801246921) is an individual adolescent medicine provider in Sioux Falls, South Dakota, licensed in South Dakota (16934) and active in the NPI registry since June 2016. She is enrolled in Medicare PECOS.
NPPES Registry Identity
Specialties & Licenses
Accepted Insurance
Medicare Participation & PECOS CMS
Medicare enrollment, assignment, billing reassignment, and ordering and referring status from CMS.
Medicare Enrollment Status
Enrolled in Medicare (PECOS)
Sinduja Lakkunarajah Md is registered in the CMS Provider Enrollment, Chain and Ownership System (PECOS).
Medicare Billing Reassignments
7Medicare enrollment records show Sinduja Lakkunarajah reassigns Medicare billing to 7 organizations. Each organization bills Medicare for the services this provider delivers there; the nearest is listed first.
Sioux Falls, SD 57105
- Reassigned Medicare billing, South Dakota enrollment
- 1,097 clinicians in this Medicare group
Eau Claire, WI 54701
- Reassigned Medicare billing, Wisconsin enrollment
- Also billed through NPI 1952890873 (Wisconsin)
- 2,476 clinicians in this Medicare group
Chetek, WI 54728
- Reassigned Medicare billing, Wisconsin enrollment
- 1,616 clinicians in this Medicare group
Neillsville, WI 54456
- Reassigned Medicare billing, Wisconsin enrollment
- Also billed through NPI 1346239373 (Wisconsin)
- 1,440 clinicians in this Medicare group
Marshfield, WI 54449
- Reassigned Medicare billing, Wisconsin enrollment
- 2,540 clinicians in this Medicare group
Park Falls, WI 54552
- Reassigned Medicare billing, Wisconsin enrollment
- Also billed through NPI 1700963048 (Wisconsin)
- 1,351 clinicians in this Medicare group
Columbus, WI 53925
- Reassigned Medicare billing, Wisconsin enrollment
- Medicare enrollment name: Beaver Dam Community Hospitals Inc.
- 1,447 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.
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 57105
SIOUX FALLS, SD 57105
SIOUX FALLS, SD 57105
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 Sinduja Lakkunarajah's NPI number?
The NPI number for Sinduja Lakkunarajah is 1801246921. It was assigned to this individual provider in the NPPES registry on June 20, 2016.
Where is Sinduja Lakkunarajah located?
Sinduja Lakkunarajah practices at 1600 W 22nd St, Sioux Falls, SD 57105. The listed phone number is (605) 312-1000.
What is Sinduja Lakkunarajah's specialty?
The primary specialty registered for this NPI is Pediatrics, specializing in Adolescent Medicine, with taxonomy code 2080A0000X.
Is Sinduja Lakkunarajah enrolled in Medicare?
Yes. Sinduja Lakkunarajah is registered in the Medicare PECOS enrollment system.
Which organizations bill Medicare for Sinduja Lakkunarajah's services?
According to the CMS Revalidation Reassignment List (October 2026 release), Sinduja Lakkunarajah reassigns Medicare benefits to 7 organizations: Sanford Medical Center (Sioux Falls, SD), Mchs Hospitals Inc (Eau Claire, WI), Lakeview Medical Center Inc Of Rice Lake (Chetek, WI), Memorial Hospital Inc (Neillsville, WI), Marshfield Clinic Inc (Marshfield, WI) and 2 more organizations, listed in the Medicare section above. 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 Sinduja Lakkunarajah's services. Reassignment records can lag staffing changes; confirm current arrangements with the organization.
What insurance does Sinduja Lakkunarajah accept?
Health plans from Sanford Health Plan, Wellmark Health Plan of Iowa, Inc. and Wellmark of South Dakota, Inc. list Sinduja Lakkunarajah 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 Sinduja Lakkunarajah was last updated on August 15, 2025. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 14 months 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.
# Sinduja Lakkunarajah, MD · NPI 1801246921
Adolescent Medicine physician in Sioux Falls, South Dakota. Individual provider, active in the CMS NPPES registry since June 20, 2016.
## Identity
- **NPI:** 1801246921 (Entity type: Individual)
- **Enumerated:** June 20, 2016
- **Primary specialty:** Pediatrics - Adolescent Medicine · taxonomy 2080A0000X
- **State license:** 16934 (South Dakota)
- **Sole proprietor:** No
## Practice location
- **Address:** 1600 W 22ND ST, Sioux Falls, SD 57105-1521
- **Phone:** (605) 312-1000
## Medicare
- **Medicare:** Enrolled in Medicare (PECOS)
- **Ordering & referring:** eligible for Part B labs & imaging, durable medical equipment, home health, power mobility devices
- **Bills Medicare through:** 7 organizations under Medicare reassignment (form CMS-855R): Sanford Medical Center (NPI 1093090342, Sioux Falls, SD); Mchs Hospitals Inc (NPI 1316416035, Eau Claire, WI); Lakeview Medical Center Inc Of Rice Lake (NPI 1659008605, Chetek, WI); Memorial Hospital Inc (NPI 1033701800, Neillsville, WI); Marshfield Clinic Inc (NPI 1952347981, Marshfield, WI); and 2 more · CMS Revalidation Reassignment List, October 2026 release
## Record status
- **NPPES last updated:** August 15, 2025
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Source: [NPI Profile](https://npiprofile.com/npi/1801246921) · Data from the CMS NPPES public registry.