Louis Sonstegard, MD
Emergency Medicine Physician · Cambridge, MN
Louis Sonstegard, MD is an emergency medicine physician with a practice address in Cambridge, Minnesota, and NPI 1427010214, issued on Apr 5, 2006. Check the license (Minnesota 20826, as entered in NPPES) on the Minnesota Board of Medical Practice; the Medicare figures below come from public CMS files.
- Name
- Louis Sonstegard
- Credential
- MD
- Primary taxonomy
- Emergency Medicine Physician 207P00000X
- License number
- 20826 MN
Self-reported in NPPES; status is on the state search - Practice location
- 701 Dellwood St S, Cambridge, MN 55008
- Phone
- (763) 689-7700
- Enumerated
- Apr 5, 2006
- Record last updated
- Jul 13, 2026
- Fax
- (763) 689-7941
- Entity
- Type 1 · individual
8 nearest emergency medicine physician records → All 1,348 in Minnesota → Look up another NPI →
Also registered at 701 Dellwood St S
A shared address usually means a shared clinic or building; it does not show who employs whom.
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Verify Louis Sonstegard in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersMinnesota Board of Medical Practice
Search for license 20826Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
88% fewer Medicare Part D claims than the average emergency medicine physician in 2024
26 Medicare Part D claims, against an average of 226 among the 54,106 providers of this specialty who prescribed in Part D. Brand-name drugs were 0% of claims.
Most prescribed
- Isosorbide Mononitrate Er14 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.
Louis Sonstegard among 1,348 emergency medicine physician records in Minnesota
Louis Sonstegard, MD is one of 1,348 emergency medicine physician records with a practice address in Minnesota. 80% of them appear in a Medicare file (Part D prescribing, MIPS, Open Payments or Medicare group billing); this one does. Its NPI, issued in 2006, is newer than 2% of them.
- NPI issued2006 · 2% of these records are older, 63% newer
- In a Medicare fileYes · 80% of these records are
- In the CMS Doctors and Clinicians fileNo · 61% of these records are
- Record last updated2026 · 45% of these records were not updated in five years or more
Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 207P00000X and a Minnesota practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
Emergency Medicine Physician providers in Minnesota
There are 1,348 emergency medicine physician records in Minnesota.
All 1,348 in Minnesota → Every provider in Cambridge → Emergency Medicine Physician nationwide →
The 8 emergency medicine physician records with the nearest ZIP codes
- Nathaniel McLean, MDCambridge, MN 550081033348545
- Allan Dale, M.D.Faribault, MN 550211881634988
- Lawrence Erickson, M.D.Hastings, MN 550331134188337
- Joel Hendrickson, M.D.Hastings, MN 550331245209477
- Ibkhan Ansine, MDMora, MN 550511194786467
- Jessica OlenMora, MN 550511669820205
- Robert Weeks, MDMora, MN 550511447216361
- Kyle Bertram, DONorthfield, MN 550571003319047
Common questions
What is Louis Sonstegard, MD's NPI number?
Louis Sonstegard, MD's National Provider Identifier (NPI) is 1427010214, issued on Apr 5, 2006. An NPI identifies a provider in billing; it is not a license.
Where is Louis Sonstegard, MD located?
The NPPES record lists a practice address at 701 Dellwood St S, Cambridge, MN, 55008. Phone: (763) 689-7700. Providers update this record themselves, so call before visiting.
How can I verify Louis Sonstegard, MD's license?
NPPES lists Minnesota license number 20826, as entered by the provider. Search the Minnesota Board of Medical Practice at https://mn.gov/boards/medical-practice/. The NPPES record confirms identity only; the state search shows license status, expiration and public orders.
How much does Louis Sonstegard, MD prescribe under Medicare Part D?
In 2024, Louis Sonstegard, MD had 26 Medicare Part D claims; the average among emergency medicine physician prescribers was 226. 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.