Dr. Eric R. Niendorf, MD
- Medicare services, 2024
- 10,397
- Medicare patients, 2024
- 2,329
- Publications
- 10
- Hospital affiliations
- 6
- Industry payments
- $24
- Practice address
- 1221 Whipple St, Eau Claire, WI 54703
- Practice phone
- Call (715) 838-3311
- Professional email
- Get professional email
- Personal email
- Get personal email
- Mobile number
- Get mobile number
Primary practice
Find Dr. Niendorf'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. Eric R. Niendorf is a diagnostic radiologist in Eau Claire, Wisconsin
Dr. Niendorf practices at Mayo Clinic Health System in Eau Claire in Eau Claire, Wisconsin, part of Mayo Clinic.
Dr. Niendorf's NPI, 1780685404, was assigned on August 3, 2005. Dr. Niendorf graduated from University of Wisconsin School of Medicine in 1999. Dr. Niendorf holds Minnesota license 47740.
- NPI
- 1780685404NPI Registry (opens in a new tab)
- Medicare PAC ID
- 2567414121
- NPI enumeration date
- August 3, 2005
- NPI status
- Active
- Accepts Medicare assignment
- Yes
- Practice phone
- (715) 838-3311
- Professional email
- Get email
- Personal email
- Get email
- Mobile number
- Get number
- Sex
- Male
- Estimated age
- 53
- Medical school graduation
- 1999
Sources: NPPES NPI Registry (CMS); Dmand AI Professional Profile Data; Dmand AI Affiliation Data; and Doctors and Clinicians National Downloadable File (CMS)
Dr. Eric R. Niendorf practices at Mayo Clinic Health System in Eau Claire in Eau Claire, Wisconsin
Dr. Niendorf's primary practice is Mayo Clinic Health System in Eau Claire, at 1221 Whipple St, Eau Claire, WI 54703 in Eau Claire County. The practice phone is (715) 838-3311.
- Mayo Clinic Health System in Eau Claire1221 Whipple St, Eau Claire, WI 54703 · Eau Claire CountyPhone(715) 838-3311
Source: Dmand AI Affiliation Data
Dr. Eric R. Niendorf is affiliated with 14 sites of care and 10 medical groups
Dr. Niendorf's primary practice is Mayo Clinic Health System in Eau Claire in Eau Claire, Wisconsin, part of Mayo Clinic. Dr. Niendorf is also affiliated with North Memorial Health - Robbinsdale Hospital. The medical group on file is Fairview Clinics. Dmand AI also links Dr. Niendorf to 4 more hospitals, 9 medical groups and 8 group practices and clinics, each named with a free account.
Sources: Dmand AI Affiliation Data; and Dmand AI Org Hierarchy Data
Dmand AI tracks the EHR system at Dr. Eric R. Niendorf's practice
Dmand AI tracks the electronic health record (EHR) system at each site where Dr. Niendorf practices, 14 sites in all. Vendor and product names are available with a free account.
| Site | EHR vendor and product |
|---|---|
| Mayo Clinic Health System in Eau Claire | Available with a free account |
| +13 more sites and 9 medical groups | Available with a free account |
Source: Dmand AI Technology Install Data
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Dr. Eric R. Niendorf is one of 782 diagnostic radiologists in Wisconsin
Diagnostic radiology is Dr. Niendorf's primary specialty in the NPI Registry, under taxonomy code 2085R0202X. Dmand AI has Dr. Niendorf's licenses on file in 2 states: Minnesota and Wisconsin.
Specialties and state licenses
- Diagnostic radiology, MinnesotaPrimary
- Wisconsin license
Diagnostic radiologists near Dr. Niendorf
Counts of diagnostic radiologists 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. Eric R. Niendorf billed Medicare for 10,397 services in 2024
CMS data shows 10,397 Medicare services from Dr. Niendorf across 50 procedure codes in 2024, for 2,329 Medicare patients. Medicare paid $109,858 for them.
Dr. Niendorf's Medicare services by type, 2023 to 2024
- 2023
- 2024
- Other services
- 2023: 562024: 7,33412996%
- Imaging
- 2023: 3,5042024: 2,99515%
- Tests and treatments
- 2023: 622024: 6810%
- Surgery
- 2023: 152024: 0100%
Where Dr. Niendorf's Medicare services took place, 2024
- In an office7,62573%
- In a facility2,77227%
Dr. Niendorf compared with the Wisconsin median for diagnostic radiologists, 2024
- Dr. Niendorf
- Wisconsin median
- Medicare services
- 10,397vs 1,8365.7 times
- Medicare patients
- 2,329vs 1,41465% above
Medians across 758 diagnostic radiologists in Wisconsin with Dmand AI profiles that report each measure.
Dr. Niendorf's most billed Medicare procedure codes, 2024
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. Niendorf?
Medicare shows one payer. Book a meeting to get commercial claims data for Dr. Niendorf and other diagnostic radiologists in Wisconsin.
Sources: Medicare Physician & Other Practitioners - by Provider and Service (CMS), 2024 data; and Dmand AI Peer Benchmarks
Dr. Eric R. Niendorf treated 2,329 Medicare patients in 2024, average age 72
CMS counts 2,329 Medicare patients who saw Dr. Niendorf in 2024. The largest group is 65 to 74, with 1,118 patients. 71% of them have high cholesterol, and 69% have high blood pressure. 21% are also on Medicaid. Their average risk score is 1.53, where 1.00 is the Medicare average, so they are sicker than most Medicare patients.
Across all payers, Dmand AI patient panel data puts Dr. Niendorf's median patient age at 70, with 65% women.
Dr. Niendorf's Medicare patients by age, 2024
Dr. Niendorf's Medicare patients by sex, 2024
- Women1,40360%
- Men92640%
Chronic conditions among Dr. Niendorf's Medicare patients, 2024
- High cholesterol71%
- High blood pressure69%
- Arthritis42%
- Chronic kidney disease33%
- Mood disorders30%
- Anxiety29%
- Depression28%
- Ischemic heart disease28%
Share of Medicare patients with each condition. A patient can have several.
Dr. Niendorf's patients across all payers
Dmand AI patient panel data covers Medicare, Medicaid and commercial patients.
Patient panel by age, all payers
Median age 70
Patient panel by sex, all payers
- Women65%
- Men35%
Sources: Dmand AI Patient Panel Data; and Medicare Physician & Other Practitioners - by Provider (CMS), 2024 data
How Dr. Eric R. Niendorf takes part in Medicare
Dr. Niendorf accepts Medicare assignment, so Medicare's approved amount is taken as full payment.
- Accepts Medicare assignment
- Yes
Mastectomy: 1 to 10 procedures (CMS shows small counts as a range)
Sources: Doctors and Clinicians National Downloadable File (CMS); and Doctors and Clinicians Utilization Data (CMS)
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Dr. Eric R. Niendorf has 10 publications on record
Dmand AI links 10 papers to Dr. Niendorf, published from 2015 to 2025. 2015 was the busiest year, with 2. The most frequent topics are Magnetic Resonance Imaging and Prostate. Dr. Niendorf has published most often in Am J Case Rep. Dr. Niendorf's most frequent co-authors are Igor Dumic, MD, Benjamin Don Spilseth, MD and Charles W. Nordstrom, MD.
Dr. Niendorf's papers by year, 2015 to 2025
Topics Dr. Niendorf writes about most
- Magnetic Resonance Imaging
- Prostate
Dr. Niendorf's most frequent co-authors
- Igor Dumic, MD5 shared papers
- Benjamin Don Spilseth, MD4 shared papers
- Charles W. Nordstrom, MD3 shared papers
Recent publications by Dr. Niendorf
See who Dr. Niendorf researches with
Physician Network Discovery turns co-authorship, shared hospitals and shared groups into a map of who Dr. Niendorf works with, so you can find a warm path to the right diagnostic radiologists.
Sources: PubMed (National Library of Medicine); and Dmand AI Research Linkage
Dr. Eric R. Niendorf received $24 in industry payments in 2017
CMS Open Payments shows 1 general payment to Dr. Niendorf from 1 drug or device company in 2017. Food and beverage make up the largest share, 100% of the total. Cook Medical LLC paid the most, $24.
Companies that paid Dr. Niendorf the most, 2017 to 2017
Share is of all general payments to this clinician.
Source: Open Payments (CMS), 2025 data, released July 7, 2026
Dr. Eric R. Niendorf graduated from University of Wisconsin School of Medicine
Dr. Niendorf graduated from University of Wisconsin School of Medicine in 1999.
- Medical school
Source: Dmand AI Professional Profile Data
Sources for Dr. Eric R. Niendorf'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 Data |
| Primary practice, affiliations and health system | Dmand AI Affiliation DataDmand AI Org Hierarchy Data |
| 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 DataMedicare Physician & Other Practitioners - by Provider (CMS) (opens in a new tab) |
| MIPS scores, telehealth, assignment and procedure percentiles | Doctors and Clinicians National Downloadable File (CMS) (opens in a new tab)Doctors and Clinicians Utilization Data (CMS) (opens in a new tab) |
| Publications, topics and co-authors | PubMed (National Library of Medicine) (opens in a new tab)Dmand AI Research Linkage |
| Industry payments | Open Payments (CMS) (opens in a new tab) |
| Training, board certification and memberships | Dmand AI Professional Profile Data |
| 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. Eric R. Niendorf
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. Eric R. Niendorf's NPI number?
Dr. Eric R. Niendorf's NPI number is 1780685404. It was assigned on August 3, 2005, and it is active in the NPI Registry.
What kind of doctor is Dr. Eric R. Niendorf?
Dr. Eric R. Niendorf is a diagnostic radiologist in Eau Claire, Wisconsin. The primary specialty in the NPI Registry is Diagnostic Radiology Physician (taxonomy code 2085R0202X).
Where does Dr. Eric R. Niendorf practice?
Dr. Niendorf practices at 1221 Whipple St, Eau Claire, WI 54703. Dr. Niendorf's primary practice is Mayo Clinic Health System in Eau Claire in Eau Claire, Wisconsin, part of Mayo Clinic. Dmand AI also links Dr. Niendorf to 4 hospitals, 9 medical groups and 8 group practices and clinics.
What is Dr. Eric R. Niendorf's office phone number?
The practice phone on file for Dr. Niendorf is (715) 838-3311.
What is Dr. Eric R. Niendorf's medical license number?
Dr. Niendorf holds Minnesota license 47740, one of the licenses on file in 2 states.
Which states has Dr. Eric R. Niendorf been licensed in?
Dmand AI has state licenses on file for Dr. Niendorf in Minnesota and Wisconsin.
Which hospitals is Dr. Eric R. Niendorf affiliated with?
Dr. Niendorf practices at Mayo Clinic Health System in Eau Claire in Eau Claire, Wisconsin. Dr. Niendorf is also affiliated with North Memorial Health - Robbinsdale Hospital. Dmand AI links Dr. Niendorf to 4 more hospitals.
What medical group is Dr. Eric R. Niendorf part of?
Dr. Niendorf is linked to Fairview Clinics. Dmand AI links Dr. Niendorf to 9 more medical groups.
Does Dr. Eric R. Niendorf accept Medicare?
Yes. CMS data shows Dr. Niendorf billed Medicare for 10,397 services in 2024, and Dr. Niendorf accepts Medicare assignment.
How many Medicare patients does Dr. Eric R. Niendorf see?
CMS counts 2,329 Medicare patients who saw Dr. Niendorf in 2024, with an average age of 72.
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What services does Dr. Eric R. Niendorf bill to Medicare?
In 2024, Dr. Niendorf's most billed Medicare services were medicare temporary code (Q9967), medical supplies or transport (A9585) and radiation oncology (77067).
Where did Dr. Eric R. Niendorf go to medical school?
Dr. Niendorf graduated from University of Wisconsin School of Medicine in 1999.
Has Dr. Eric R. Niendorf received payments from drug or device companies?
CMS Open Payments shows $24 in general payments to Dr. Niendorf from 1 company from 2017 to 2017. The largest total came from Cook Medical LLC.
How long has Dr. Eric R. Niendorf been practicing?
Dr. Niendorf graduated from medical school in 1999, 27 years ago.
Does Dr. Eric R. Niendorf do research?
Dmand AI links 10 publications to Dr. Niendorf, published from 2015 to 2025.
Who does Dr. Eric R. Niendorf publish with?
Dr. Niendorf's most frequent co-authors are Igor Dumic, MD (5 shared papers), Benjamin Don Spilseth, MD (4 shared papers) and Charles W. Nordstrom, MD (3 shared papers).
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