DR. THOMAS J NIELSEN M.D.
NPI 1235138546
Otolaryngology in Chicago, IL

Q: What is Thomas Nielsen's NPI number?

The NPI number for Thomas Nielsen is 1235138546. It was assigned to this individual provider in the NPPES registry on July 19, 2005.

Q: What is Thomas Nielsen's specialty?

The primary specialty registered for this NPI is Otolaryngology with taxonomy code 207Y00000X.

Q: When was this NPI record last updated?

The NPPES record for Thomas Nielsen was last updated on May 4, 2011. NPI Profile syncs with the weekly NPPES data releases published by CMS.

Active since July 19, 2005

1611 W HARRISON ST, SUITE 550, CHICAGO, IL 60612(312) 942-6100(312) 942-6225 Get Directions Write a Review

NPPES record last updated: May 4, 2011. Verified against the NPPES registry weekly; last sync: July 26, 2026.

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About Dr. Thomas J Nielsen M.d. NPPES

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

DR. THOMAS J NIELSEN M.D. (NPI 1235138546) is an individual otolaryngology provider in Chicago, Illinois, licensed in Illinois (036072375) and active in the NPI registry since July 2005.

NPPES Registry Identity

NPI1235138546

Entity TypeIndividualMale

Primary Taxonomy207Y00000X

Provider Legal NameDR. THOMAS J NIELSENCredential: M.D.

Location Address1611 W HARRISON ST, SUITE 550Chicago, IL 60612-4861

Mailing Address1611 W Harrison St, Suite 550Chicago, IL 60612-4861 · (312) 942-6100 · Fax (312) 942-6225

Phone(312) 942-6100

Fax(312) 942-6225

Sole ProprietorNo

Enumeration DateJuly 19, 2005

Last NPPES UpdateMay 4, 2011

✔ NPI 1235138546 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses 2

★ Primary SpecialtyOtolaryngologyAllopathic & Osteopathic Physicians

Taxonomy Code207Y00000X

License✔ Licensed in IL · 036072375

Definition

An otolaryngologist-head and neck surgeon provides comprehensive medical and surgical care for patients with diseases and disorders that affect the ears, nose, throat, the respiratory and upper alimentary systems and related structures of the head and neck. An otolaryngologist diagnoses and provides medical and/or surgical therapy or prevention of diseases, allergies, neoplasms, deformities, disorders and/or injuries of the ears, nose, sinuses, throat, respiratory and upper alimentary systems, face, jaws and the other head and neck systems. Head and neck oncology, facial plastic and reconstructive surgery and the treatment of disorders of hearing and voice are fundamental areas of expertise.

Also ListedOtolaryngology · Plastic Surgery within the Head & NeckTaxonomy 207YX0007X · License 036-072375 (IL)

1611 W HARRISON ST, Chicago, IL 60612

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