Dr. Thomas J. Nielsen, MD
- Medicare services, 2020
- 966
- Part D claims, 2021
- 45
- Affiliated sites
- 1
- Medical group
- 1
- State license
- 1
- Practice address
- 1611 W Harrison St, Chicago, IL 60612-4861
- Practice phone
- Call (312) 942-6100
- Professional email
- Get professional email
- Personal email
- Get personal email
- Mobile number
- Get mobile number
Primary practice
Rush Otolaryngology Head And Neck Surgery
Surgical practice · Chicago, Illinois
Find Dr. Nielsen's professional email, personal email and mobile number
Dmand AI checks each channel through healthcare-specific waterfall enrichment. See what is on file with a free account, with practice phones, licenses and affiliations.
Dr. Thomas J. Nielsen is an otolaryngologist in Chicago, Illinois
Dr. Nielsen practices at Rush Otolaryngology Head And Neck Surgery in Chicago, Illinois.
Dr. Nielsen's NPI, 1235138546, was assigned on July 19, 2005. Dr. Nielsen holds Illinois license 036072375.
- NPI
- 1235138546NPI Registry (opens in a new tab)
- NPI enumeration date
- July 19, 2005
- NPI status
- Active
- Practice phone
- (312) 942-6100
- Professional email
- Get email
- Personal email
- Get email
- Mobile number
- Get number
- Sex
- Male
Sources: NPPES NPI Registry (CMS); Dmand AI Professional Profile Data; Dmand AI Affiliation Data; and Doctors and Clinicians National Downloadable File (CMS)
Dr. Thomas J. Nielsen practices at Rush Otolaryngology Head and Neck Surgery in Chicago, Illinois
Dr. Nielsen's primary practice is Rush Otolaryngology Head and Neck Surgery, at 1611 W Harrison St, Chicago, IL 60612-4861. The practice phone is (312) 942-6100.
- Rush Otolaryngology Head and Neck Surgery1611 W Harrison St, Chicago, IL 60612-4861Phone(312) 942-6100
Sources: Dmand AI Affiliation Data; and Doctors and Clinicians National Downloadable File (CMS)
Dr. Thomas J. Nielsen is affiliated with 1 site of care and 1 medical group
Dr. Nielsen's primary practice is Rush Otolaryngology Head And Neck Surgery in Chicago, Illinois. Dmand AI also links Dr. Nielsen to 1 medical group, named with a free account.
Sources: Dmand AI Affiliation Data; and Doctors and Clinicians National Downloadable File (CMS)
Dmand AI tracks the EHR system at Dr. Thomas J. Nielsen's practice
Dmand AI tracks the electronic health record (EHR) system at each site where Dr. Nielsen practices. Vendor and product names are available with a free account.
| Site | EHR vendor and product |
|---|---|
| Rush Otolaryngology Head And Neck Surgery | Available with a free account |
| +1 medical group | Available with a free account |
Source: Dmand AI Technology Install Data
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Dr. Thomas J. Nielsen is one of 401 otolaryngologists in Illinois
Otolaryngology is Dr. Nielsen's primary specialty in the NPI Registry, under taxonomy code 207Y00000X. Dr. Nielsen is licensed in Illinois.
Specialties and state licenses
- Otolaryngology, IllinoisPrimary
Otolaryngologists near Dr. Nielsen
Counts of otolaryngologists with a Dmand AI profile, by place and practice. Each opens the list.
Sources: NPPES NPI Registry (CMS); Dmand AI Professional Profile Data; and Dmand AI Peer Benchmarks
Dr. Thomas J. Nielsen billed Medicare for 966 services in 2020
CMS data shows 966 Medicare services from Dr. Nielsen across 8 procedure codes in 2020. Medicare paid $40,118 for them.
Dr. Nielsen's Medicare services by type, 2019 to 2020
- 2019
- 2020
- Office and hospital visits
- 2019: 1,2772020: 72144%
- Surgery
- 2019: 4512020: 24546%
Where Dr. Nielsen's Medicare services took place, 2020
- In an office87591%
- In a facility919%
Dr. Nielsen compared with the Illinois median for otolaryngologists, 2020
- Dr. Nielsen
- Illinois median
- Medicare services
- 966vs 60360% above
- Part D claims
- 45vs 16372% below
Medians across 384 otolaryngologists in Illinois with Dmand AI profiles that report each measure.
Dr. Nielsen's most billed Medicare procedure codes, 2020
CMS publishes codes billed for 11 or more Medicare patients. Each label is the code family; CPT descriptions are licensed by the AMA.
Need commercial claims for Dr. Nielsen?
Medicare shows one payer. Book a meeting to get commercial claims data for Dr. Nielsen and other otolaryngologists in Illinois.
Sources: Medicare Physician & Other Practitioners - by Provider and Service (CMS), 2024 data; and Dmand AI Peer Benchmarks
Dr. Thomas J. Nielsen's patients have a median age of 68
Across all payers, Dmand AI patient panel data puts Dr. Nielsen's median patient age at 68, with 59% women.
Dr. Nielsen's patients across all payers
Dmand AI patient panel data covers Medicare, Medicaid and commercial patients.
Patient panel by age, all payers
Median age 68
Patient panel by sex, all payers
- Women59%
- Men40%
Source: Dmand AI Patient Panel Data
Dr. Thomas J. Nielsen wrote 45 Medicare Part D claims in 2021
In 2021, Dr. Nielsen wrote 45 Medicare Part D claims. Every claim was for a generic drug. They cover 3 drugs, with $2,038 in total drug cost. In 2020, CMS named 517 claims across 15 drugs.
Dr. Nielsen's most prescribed drugs by claims, 2021
CMS names a drug when it has 11 or more claims. Share is of the claims for drugs CMS names.
Part D claims for drugs CMS names, 2020 to 2021
- 2020
- 2021
- Claims for drugs CMS names
- 2020: 5172021: 4591%
Drugs named by CMS: 3 in 2021, 15 in 2020.
Source: Medicare Part D Prescribers - by Provider and Drug (CMS), 2024 data, released May 6, 2026
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Sources for Dr. Thomas J. Nielsen's profile data
| Data on this page | Source |
|---|---|
| NPI, name, sex, specialty and licenses | NPPES NPI Registry (CMS) (opens in a new tab)Dmand AI Professional Profile Data |
| Practice locations and phone | Dmand AI Affiliation DataDoctors and Clinicians National Downloadable File (CMS) (opens in a new tab) |
| Primary practice, affiliations and health system | Dmand AI Affiliation DataDoctors and Clinicians National Downloadable File (CMS) (opens in a new tab) |
| Medicare services and procedure codes | Medicare Physician & Other Practitioners - by Provider and Service (CMS) (opens in a new tab) |
| State medians for the same specialty | Dmand AI Peer Benchmarks |
| Medicare patients and the all-payer patient panel | Dmand AI Patient Panel Data |
| Part D prescribing | Medicare Part D Prescribers - by Provider and Drug (CMS) (opens in a new tab) |
| EHR at each practice site | Dmand AI Technology Install Data |
| Similar physicians | Dmand AI Affiliation Data |
Data last refreshed October 2026Report an inaccuracyRemove my information
FAQ
Frequently asked questions about Dr. Thomas J. Nielsen
Spotted something out of date? Email hello@dmand.ai and we will check the record. Contact details live in the free trial.
What is Dr. Thomas J. Nielsen's NPI number?
Dr. Thomas J. Nielsen's NPI number is 1235138546. It was assigned on July 19, 2005, and it is active in the NPI Registry.
What kind of doctor is Dr. Thomas J. Nielsen?
Dr. Thomas J. Nielsen is an otolaryngologist in Chicago, Illinois. The primary specialty in the NPI Registry is Otolaryngology Physician (taxonomy code 207Y00000X).
Where does Dr. Thomas J. Nielsen practice?
Dr. Nielsen practices at 1611 W Harrison St, Chicago, IL 60612-4861. Dr. Nielsen's primary practice is Rush Otolaryngology Head And Neck Surgery in Chicago, Illinois. Dmand AI also links Dr. Nielsen to 1 medical group.
What is Dr. Thomas J. Nielsen's office phone number?
The practice phone on file for Dr. Nielsen is (312) 942-6100.
What is Dr. Thomas J. Nielsen's medical license number?
Dr. Nielsen holds Illinois license 036072375.
Does Dr. Thomas J. Nielsen accept Medicare?
Yes. CMS data shows Dr. Nielsen billed Medicare for 966 services in 2020.
What services does Dr. Thomas J. Nielsen bill to Medicare?
In 2020, Dr. Nielsen's most billed Medicare services were office visit, established patient (99213), office visit, established patient (99214) and surgery: ear (69210).
What drugs does Dr. Thomas J. Nielsen prescribe most?
In 2021 Medicare Part D data, Dr. Nielsen's most prescribed drugs by claims were Fluticasone Propionate, Azelastine HCl and Fluocinolone Acetonide Oil.
How long has Dr. Thomas J. Nielsen been practicing?
Dr. Nielsen's NPI was assigned in 2005.
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