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SIOUXLAND ADULT MEDICINE, PLLC
NPI 1295991677
Specialist in Sioux City, IA

Active since August 05, 2008CLIA 16D1088593 · Waiver
2800 PIERCE ST, SUITE 410, SIOUX CITY, IA 51104(712) 234-1005 Get Directions Write a Review

NPPES record last updated: August 5, 2008. Verified against the NPPES registry weekly; last sync: November 01, 2026.

About Siouxland Adult Medicine, Pllc NPPES

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

SIOUXLAND ADULT MEDICINE, PLLC (NPI 1295991677) is a healthcare organization registered as a specialist in Sioux City, Iowa and active in the NPI registry since August 2008. The organization holds a CLIA Waiver certificate valid through August 9, 2028 and lists Mark O Carlson, Internal Medicine, as its authorized official.

NPPES Registry Identity

NPI1295991677
Entity TypeOrganization
Primary Taxonomy174400000X
Legal Business NameSIOUXLAND ADULT MEDICINE, PLLC
Location Address2800 PIERCE ST, SUITE 410Sioux City, IA 51104-3755
Mailing Address2800 Pierce St, Suite 410Sioux City, IA 51104-3755 · (712) 234-1005
Phone(712) 234-1005
Organization SubpartNo
Authorized OfficialMark O CarlsonInternal Medicine · (712) 234-1005
Enumeration DateAugust 5, 2008
✔ NPI 1295991677 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses

★ Primary SpecialtySpecialistOther Service Providers
Taxonomy Code174400000X
License✔ Licensed in IA · 127854
Definition
An individual educated and trained in an applied knowledge discipline used in the performance of work at a level requiring knowledge and skills beyond or apart from that provided by a general education or liberal arts degree.
2800 PIERCE ST, Sioux City, IA 51104
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Group Practice 1

Group TaxonomyThis provdier is a business group of one or more individual practitioners, all of who practice with the same area of specialization.193400000X SINGLE SPECIALTY GROUP

Accepted Insurance

The full list of accepted plans is on the Insurance tab. Issuers include Avera Health Plans, Sanford Health Plan.Insurance ›

Medicare Participation & PECOS CMS

Medicare enrollment and the clinicians who bill Medicare through this organization, from CMS.

Medicare Enrollment Status

✔

Enrolled in Medicare (PECOS)

Siouxland Adult Medicine, Pllc is registered in the CMS Provider Enrollment, Chain and Ownership System (PECOS).

Clinicians Billing Medicare Through This Organization

6

Medicare enrollment records show 6 clinicians reassign Medicare billing to Siouxland Adult Medicine, PLLC, which bills Medicare for the services they deliver. Of these, 4 practice within 10 miles. They are listed nearest first.

Clinicians, nearest first (6)

Mark Carlson, M.D.
Internal Medicine
NPI 1609837368
1605 DOUGLAS ST
Sioux City, IA 51105
(712) 234-1005
✔ PECOS✔ Accepts Medicare0.8 mi
Roha Abera
Nurse Practitioner
NPI 1841928991
1021 NEBRASKA ST
Sioux City, IA 51105
(712) 252-2477
✔ PECOS✔ Accepts Medicare1.3 mi
Garry Clark, D.O.
Family Practice
NPI 1952380750
3930 STADIUM DR
Sioux City, IA 51106
(712) 276-4325
✔ PECOS✔ Accepts Medicare6.0 mi
David Daniels, M.D.
Internal Medicine
NPI 1972558229
3520 SINGING HILLS BLVD
Sioux City, IA 51106
(712) 294-7400
✔ PECOS✔ Accepts Medicare6.1 mi
Tyler Nielsen
Nurse Practitioner
NPI 1154056000
10375 PARK MEADOWS DR STE 100
Lone Tree, CO 80124
(303) 225-0025
✔ PECOS✔ Accepts Medicare488 mi
Ann Wendel, MSN, APRN, FNP-C
Nurse Practitioner
NPI 1225714231
PO BOX 528
Bethel, AK 99559
(907) 543-6336
✔ PECOS✔ Accepts Medicare2,929 mi

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

CLIA Laboratory Certificates CMS CLIA

Laboratory certificates issued under the Clinical Laboratory Improvement Amendments (CLIA) program, which sets federal quality standards for human laboratory testing in the United States. There is no official CMS crosswalk between CLIA and NPI numbers; these certificates are associated with this NPI by matching facility names, locations and phone numbers in the CMS CLIA registry.

Certificate of Waiver 16D1088593

Siouxland Adult Medicine · Sioux City, IA
Active · expires Aug 9, 2028
CLIA Number16D1088593
Laboratory TypePhysician Office
Certificate Effective DateAugust 10, 2026
Certificate Expiration DateAugust 9, 2028
Laboratory DirectorMark O. Carlson
Laboratory Phone(712) 234-1005
Laboratory LocationSiouxland Adult Medicine1605 Douglas Street, Sioux City, IA 51105
CLIA data matches this NPI record on: Name Phone
This certificate is issued to a laboratory to perform only waived tests.

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 Siouxland Adult Medicine, PLLC's NPI number?

The NPI number for Siouxland Adult Medicine, PLLC is 1295991677. It was assigned to this organization in the NPPES registry on August 5, 2008.

Where is Siouxland Adult Medicine, PLLC located?

Siouxland Adult Medicine, PLLC is located at 2800 Pierce St Suite 410, Sioux City, IA 51104. The listed phone number is (712) 234-1005.

What is Siouxland Adult Medicine, PLLC's specialty?

The primary specialty registered for this NPI is Specialist with taxonomy code 174400000X.

Is Siouxland Adult Medicine, PLLC enrolled in Medicare?

Yes. Siouxland Adult Medicine, PLLC is registered in the Medicare PECOS enrollment system.

How many clinicians bill Medicare through Siouxland Adult Medicine, PLLC?

According to the CMS Revalidation Reassignment List (October 2026 release), 6 clinicians in 3 Medicare specialties reassign their Medicare billing to Siouxland Adult Medicine, PLLC. A 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 the clinician's services. The largest specialties are Nurse Practitioner (3), Internal Medicine (2) and Family Practice (1). Of these, 4 practice within 10 miles. Reassignment records can lag staffing changes; confirm a current affiliation with the organization.

Does Siouxland Adult Medicine, PLLC hold a CLIA laboratory certificate?

Yes. A Certificate of Waiver (number 16D1088593) is associated with this NPI, valid through August 9, 2028. CLIA certificates authorize laboratory testing under the federal Clinical Laboratory Improvement Amendments program.

What insurance does Siouxland Adult Medicine, PLLC accept?

Health plans from Avera Health Plans and Sanford Health Plan list Siouxland Adult Medicine, PLLC 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 Siouxland Adult Medicine, PLLC was last updated on August 5, 2008. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 18 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.