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DR. MARK W NIELSEN M.D.
NPI 1922056894
Thoracic Surgery (Cardiothoracic Vascular Surgery) in Sioux City, IA

Active since May 04, 2006
4630 SINGING HILLS BLVD, SUITE A, SIOUX CITY, IA 51106(712) 271-8346(712) 271-8347 Get Directions Write a Review

NPPES record last updated: December 7, 2009. Verified against the NPPES registry weekly; last sync: August 02, 2026.

About Dr. Mark W Nielsen M.d. NPPES

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

DR. MARK W NIELSEN M.D. (NPI 1922056894) is an individual thoracic surgery (cardiothoracic vascular surgery) provider in Sioux City, Iowa, licensed in Iowa (036115004) and active in the NPI registry since May 2006.

NPPES Registry Identity

NPI1922056894
Entity TypeIndividualMale
Primary Taxonomy208G00000X
Provider Legal NameDR. MARK W NIELSENCredential: M.D.
Location Address4630 SINGING HILLS BLVD, SUITE ASioux City, IA 51106-9702
Mailing Address4630 Singing Hills Blvd, Suite ASioux City, IA 51106-9702 · (712) 271-8346 · Fax (712) 271-8347
Phone(712) 271-8346
Fax(712) 271-8347
Sole ProprietorYes
Enumeration DateMay 4, 2006
Last NPPES UpdateDecember 7, 2009
✔ NPI 1922056894 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses

★ Primary SpecialtyThoracic Surgery (Cardiothoracic Vascular Surgery)Allopathic & Osteopathic Physicians
Taxonomy Code208G00000X
License✔ Licensed in IA · 036115004
Definition
A thoracic surgeon provides the operative, perioperative and critical care of patients with pathologic conditions within the chest. Included is the surgical care of coronary artery disease, cancers of the lung, esophagus and chest wall, abnormalities of the trachea, abnormalities of the great vessels and heart valves, congenital anomalies, tumors of the mediastinum and diseases of the diaphragm. The management of the airway and injuries of the chest is within the scope of the specialty.
4630 SINGING HILLS BLVD, Sioux City, IA 51106
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Other Identifiers 1

Medicare UPIND28654

Other Providers at the Same Location NPPES

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

SIOUXLAND VEIN CENTER PC
Thoracic Surgery (Cardiothoracic Vascular Surgery)
4630 SINGING HILLS BLVD
SIOUX CITY, IA 51106
Woodbury County (712) 271-8346

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 Mark Nielsen's NPI number?

The NPI number for Mark Nielsen is 1922056894. It was assigned to this individual provider in the NPPES registry on May 4, 2006.

Where is Mark Nielsen located?

Mark Nielsen practices at 4630 Singing Hills Blvd Suite A, Sioux City, IA 51106. The listed phone number is (712) 271-8346.

What is Mark Nielsen's specialty?

The primary specialty registered for this NPI is Thoracic Surgery (Cardiothoracic Vascular Surgery) with taxonomy code 208G00000X.

When was this NPI record last updated?

The NPPES record for Mark Nielsen was last updated on December 7, 2009. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 16 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.