Steven Sonnamaker, MD
Emergency Medicine Physician · Bismarck, ND
Steven Sonnamaker, MD is an emergency medicine physician with a practice address in Bismarck, North Dakota, and NPI 1003345323, issued on Jun 9, 2017. Check the license (North Dakota 16394, as entered in NPPES) on the North Dakota Board of Medicine; the Medicare figures below come from public CMS files.
- Name
- Steven Sonnamaker
- Credential
- MD
- Primary taxonomy
- Emergency Medicine Physician 207P00000X
- License numbers
- 16394 ND
4301112415 MI
Self-reported in NPPES; status is on the state search - Practice location
- 300 N 7TH St, Bismarck, ND 58501
- Phone
- (701) 323-6000
- Enumerated
- Jun 9, 2017
- Record last updated
- May 3, 2024
- Medicare enrollment
- Enrolled (PECOS I20200520002068); accepts Medicare assignment
- Medical or professional school
- Texas A & M University System, Hsc, College Of Medicine, 2017
- Entity
- Type 1 · individual
8 nearest emergency medicine physician records → All 126 in North Dakota → Look up another NPI →
Also registered at 300 N 7TH St
A shared address usually means a shared clinic or building; it does not show who employs whom.
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- Callie Anderson, OTD, OTR/LOccupational Therapist1669205142
- Ayden ArnoldSpeech-Language Pathologist1275411613
- Mubashir Badar, M.D.Hospitalist Physician1992041123
Verify Steven Sonnamaker in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersNorth Dakota Board of Medicine
Search for license 16394Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
17% fewer Medicare Part D claims than the average emergency medicine physician in 2024
188 Medicare Part D claims for 132 beneficiaries, against an average of 226 among the 54,106 providers of this specialty who prescribed in Part D. Brand-name drugs were 10% of claims. 25 claims were for opioids.
Most prescribed
- Methylprednisolone25 claims
- Hydrocodone-Acetaminophen24 claims
- Cephalexin20 claims
- Ondansetron Odt15 claims
- Methocarbamol11 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.
No measured MIPS final score for 2023
CMS assigned the neutral MIPS final score of 75 without scoring Quality, Cost, Promoting Interoperability or Improvement Activities. It is an administrative threshold, so PlainDoctor does not compare it with measured clinicians.
Source: CMS Quality Payment Program, MIPS performance year 2023, group reporting; category weights for 2023 (qpp.cms.gov).
Bills Medicare through one group practice
- Sanford BismarckBismarck, ND
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
Steven Sonnamaker among 126 emergency medicine physician records in North Dakota
Steven Sonnamaker, MD is one of 126 emergency medicine physician records with a practice address in North Dakota. 87% 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 75% of them.
- NPI issued2017 · 75% of these records are older, 21% newer
- In a Medicare fileYes · 87% of these records are
- In the CMS Doctors and Clinicians fileYes · 51% of these records are
- Graduated2017 · median 2011 among the 64 with a school on file
- Record last updated2024 · 37% 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 North Dakota 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 North Dakota
There are 126 emergency medicine physician records in North Dakota.
All 126 in North Dakota → Every provider in Bismarck → Emergency Medicine Physician nationwide →
The 8 emergency medicine physician records with the nearest ZIP codes
- Joel Blanchard, MDBismarck, ND 585011356368021
- Guy Connell, MDBismarck, ND 585011598788523
- Thomas Fairbairn, MDBismarck, ND 585011982702619
- Alistair Fyfe, MDBismarck, ND 585011245253954
- Paul Grooms, DOBismarck, ND 585011104801760
- Davin Hatlestad, M.D.Bismarck, ND 585011609989268
- Kadon Hintz, M.D.Bismarck, ND 585011245437730
- Craig Lambrecht, MDBismarck, ND 585011386742021
Common questions
What is Steven Sonnamaker, MD's NPI number?
Steven Sonnamaker, MD's National Provider Identifier (NPI) is 1003345323, issued on Jun 9, 2017. An NPI identifies a provider in billing; it is not a license.
Where is Steven Sonnamaker, MD located?
The NPPES record lists a practice address at 300 N 7TH St, Bismarck, ND, 58501. Phone: (701) 323-6000. Providers update this record themselves, so call before visiting.
How can I verify Steven Sonnamaker, MD's license?
NPPES lists North Dakota license number 16394, as entered by the provider. Search the North Dakota Board of Medicine at https://www.ndbom.org/. The NPPES record confirms identity only; the state search shows license status, expiration and public orders.
How much does Steven Sonnamaker, MD prescribe under Medicare Part D?
In 2024, Steven Sonnamaker, MD had 188 Medicare Part D claims for 132 beneficiaries; the average among emergency medicine physician prescribers was 226. Part D covers Medicare prescriptions only.
What is Steven Sonnamaker, MD's MIPS final score?
CMS assigned the neutral MIPS final score of 75 for 2023 without scoring any category, so it is not a measured result.
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.