Nicholas C. Ellefson, DO
Family Medicine Physician · Superior, WI
Nicholas C. Ellefson, DO is a family medicine physician with a practice address in Superior, Wisconsin, and NPI 1639699200, issued on Jun 23, 2017. Check the license (Wisconsin 71579-21, as entered in NPPES) on the Wisconsin Medical Examining Board; the Medicare figures below come from public CMS files.
- Name
- Nicholas C. Ellefson
- Credential
- DO
- Primary taxonomy
- Family Medicine Physician 207Q00000X
- License numbers
- 71579-21 WI
66646 MN
3356 WV
Self-reported in NPPES; status is on the state search - Practice location
- 3500 Tower Ave, Superior, WI 54880
- Phone
- (715) 817-7100
- Enumerated
- Jun 23, 2017
- Record last updated
- Jun 19, 2020 (not updated in 6 years: call before relying on the address or phone)
- Fax
- (715) 817-7039
- Medicare enrollment
- Enrolled (PECOS I20201027002963); accepts Medicare assignment
- Medical or professional school
- West Virginia School Of Osteopathic Medicine, 2012
- Entity
- Type 1 · individual
8 nearest family medicine physician records → All 3,765 in Wisconsin → Look up another NPI →
Also registered at 3500 Tower Ave
A shared address usually means a shared clinic or building; it does not show who employs whom.
- Clayton Allison, MDPsychiatry Physician1801057955
- Leslie Anderson, PTPhysician Assistant1578686622
- Brenda BakerOccupational Therapist1114093267
- Nicole Bakken, NPFamily Nurse Practitioner1134487176
- Darrell Barnack, LICSWSocial Worker1346295540
- Grace Beckman, PA-CPhysician Assistant1396506705
Verify Nicholas C. Ellefson in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersWisconsin Medical Examining Board
Search for license 71579-21Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
89% fewer Medicare Part D claims than the average family medicine physician in 2024
386 Medicare Part D claims for 115 beneficiaries, against an average of 3,544 among the 117,163 providers of this specialty who prescribed in Part D.
Most prescribed
- Eliquis20 claims
- Magnesium Sulfate20 claims
- Furosemide18 claims
- Methotrexate15 claims
- Cefdinir14 claims
- Prednisone14 claims
Source: CMS Medicare Part D Prescribers by Provider and Drug, 2024 (data.cms.gov). Part D covers prescriptions for Medicare patients only; drugs with fewer than 11 claims are not published.
Bills Medicare through 2 group practices
- St Marys Hospital OF SuperiorSuperior, WI
- The Duluth Clinic LtdDuluth, MN
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
Nicholas C. Ellefson among 3,765 family medicine physician records in Wisconsin
Nicholas C. Ellefson, DO is one of 3,765 family medicine physician records with a practice address in Wisconsin. 75% of them appear in a Medicare file (Part D prescribing, MIPS, Open Payments or Medicare group billing); this one does. Its NPI, issued in 2017, is newer than 81% of them.
- NPI issued2017 · 81% of these records are older, 16% newer
- In a Medicare fileYes · 75% of these records are
- In the CMS Doctors and Clinicians fileYes · 62% of these records are
- Graduated2012 · median 2007 among the 2,347 with a school on file
- Record last updated2020 · 56% of these records were not updated in five years or more
Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 207Q00000X and a Wisconsin practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
19 family medicine physician records list a practice address in Superior
They are 19 of the 458 NPPES records with a practice address in Superior, and 3,765 family medicine physician records in Wisconsin.
All 3,765 in Wisconsin → Every provider in Superior → Family Medicine Physician nationwide →
The 8 family medicine physician records with the nearest ZIP codes
- Emily Anderson, MDSuperior, WI 548801770551335
- Daniel Cabot, DOSuperior, WI 548801255306858
- Amida Gallito, M.D.Superior, WI 548801235267782
- Lauren Giammar, MDSuperior, WI 548801760449763
- Megan Hoel, DOSuperior, WI 548801013351279
- Jean Hoyer, M.D.Superior, WI 548801104852615
- David Kirby, MDSuperior, WI 548801629027032
- Gloria Lopez, M.DSuperior, WI 548801558466359
Common questions
What is Nicholas C. Ellefson, DO's NPI number?
Nicholas C. Ellefson, DO's National Provider Identifier (NPI) is 1639699200, issued on Jun 23, 2017. An NPI identifies a provider in billing; it is not a license.
Where is Nicholas C. Ellefson, DO located?
The NPPES record lists a practice address at 3500 Tower Ave, Superior, WI, 54880. Phone: (715) 817-7100. Providers update this record themselves, so call before visiting.
How can I verify Nicholas C. Ellefson, DO's license?
NPPES lists Wisconsin license number 71579-21, as entered by the provider. Search the Wisconsin Medical Examining Board at https://dsps.wi.gov/Pages/BoardsCouncils/MEB/Default.aspx. The NPPES record confirms identity only; the state search shows license status, expiration and public orders.
How much does Nicholas C. Ellefson, DO prescribe under Medicare Part D?
In 2024, Nicholas C. Ellefson, DO had 386 Medicare Part D claims for 115 beneficiaries; the average among family medicine physician prescribers was 3,544. Part D covers Medicare prescriptions only.
Source: CMS National Plan and Provider Enumeration System (NPPES), file of Aug 9, 2026 (NPPES files on CMS.gov); NUCC Health Care Provider Taxonomy. Medicare files from data.cms.gov. An NPI identifies who bills; it is not a license.
Figures on PlainDoctor are read from the federal files each page names (CMS NPPES, Medicare Part D, MIPS, Open Payments; the HHS-OIG exclusion list only as counts) and from Census population estimates, with the file date shown beside them. See our editorial standards & corrections policy, the methodology behind these numbers, or report a data error. Data current as of Aug 9, 2026.