Ryan M. Siewert, MD
Family Medicine Physician · Williston, ND
Ryan M. Siewert, MD is a family medicine physician with a practice address in Williston, North Dakota, and NPI 1528355500, issued on Jun 29, 2011. Check the license (North Dakota 12504, as entered in NPPES) on the North Dakota Board of Medicine; the Medicare figures below come from public CMS files.
- Name
- Ryan M. Siewert
- Credential
- MD
- Primary taxonomy
- Family Medicine Physician 207Q00000X
- License numbers
- 12504 ND
RL11922 ND
Self-reported in NPPES; status is on the state search - Practice location
- 1321 W Dakota Pkwy, Williston, ND 58801
- Phone
- (701) 572-7711
- Enumerated
- Jun 29, 2011
- Record last updated
- Sep 24, 2025
- Fax
- (701) 572-2283
- Medicaid ID
- 12083 ND
- Medicare enrollment
- Enrolled (PECOS I20140827000028); accepts Medicare assignment
- Medical or professional school
- University Of North Dakota School Of Medicine, 2011
- Entity
- Type 1 · individual
8 nearest family medicine physician records → All 596 in North Dakota → Look up another NPI →
Also registered at 1321 W Dakota Pkwy
A shared address usually means a shared clinic or building; it does not show who employs whom.
- Keisha Adams, APRN, FNP-BCPrimary Care Nurse Practitioner1851024640
- Jenna Anderson, RNRegistered Nurse1801678990
- Brittany Bertsch, DOFamily Medicine Physician1457872863
- Cami Bren, WHNP, FNP-CWomen's Health Nurse Practitioner1457664617
- Kaitlyn Burch, FNP-CFamily Nurse Practitioner1972361061
- Maria Cristina De Souza, M.D.Internal Medicine Physician1689602393
Verify Ryan M. Siewert in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersNorth Dakota Board of Medicine
Search for license 12504Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
3.2 times the Medicare Part D claims of the average family medicine physician in 2024
11,400 Medicare Part D claims for 649 beneficiaries, against an average of 3,544 among the 117,163 providers of this specialty who prescribed in Part D. Brand-name drugs were 14% of claims. 496 claims were for opioids.
Most prescribed
- Levothyroxine Sodium511 claims
- Atorvastatin Calcium508 claims
- Lisinopril357 claims
- Amlodipine Besylate351 claims
- Losartan Potassium321 claims
- Furosemide309 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.
The practice group's MIPS final score for 2023 (Medicare payment program): 83.8 of 100
The Merit-based Incentive Payment System score is reported for the practice group, not for one clinician alone. Four categories are weighted into the final score; the average among 454,083 clinicians with a measured score was 83.5.
Source: CMS Quality Payment Program, MIPS performance year 2023, group reporting; category weights for 2023 (qpp.cms.gov).
Bills Medicare through one group practice
- Trinity HealthWilliston, ND
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
Ryan M. Siewert among 596 family medicine physician records in North Dakota
Ryan M. Siewert, MD is one of 596 family medicine physician records with a practice address in North Dakota. 66% of them appear in a Medicare file (Part D prescribing, MIPS, Open Payments or Medicare group billing); this one does. Its NPI, issued in 2011, is newer than 56% of them.
- NPI issued2011 · 56% of these records are older, 41% newer
- In a Medicare fileYes · 66% of these records are
- In the CMS Doctors and Clinicians fileYes · 51% of these records are
- Graduated2011 · median 2007 among the 305 with a school on file
- Record last updated2025 · 54% 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 North Dakota practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
11 family medicine physician records list a practice address in Williston
They are 11 of the 611 NPPES records with a practice address in Williston, and 596 family medicine physician records in North Dakota.
All 596 in North Dakota → Every provider in Williston → Family Medicine Physician nationwide →
The 8 family medicine physician records with the nearest ZIP codes
- Brittany Bertsch, DOWilliston, ND 588011457872863
- William Brunsman, MDWilliston, ND 588011104914530
- William Code, MDWilliston, ND 588011265520605
- Robert Kemp, M.D.Williston, ND 588011114951431
- James Kennedy, MDWilliston, ND 588011225102304
- Lynn Nyquist, MDWilliston, ND 588011457315970
- Mark Olson, MDWilliston, ND 588011023182110
- William Small, MDWilliston, ND 588011992793673
Common questions
What is Ryan M. Siewert, MD's NPI number?
Ryan M. Siewert, MD's National Provider Identifier (NPI) is 1528355500, issued on Jun 29, 2011. An NPI identifies a provider in billing; it is not a license.
Where is Ryan M. Siewert, MD located?
The NPPES record lists a practice address at 1321 W Dakota Pkwy, Williston, ND, 58801. Phone: (701) 572-7711. Providers update this record themselves, so call before visiting.
How can I verify Ryan M. Siewert, MD's license?
NPPES lists North Dakota license number 12504, 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 Ryan M. Siewert, MD prescribe under Medicare Part D?
In 2024, Ryan M. Siewert, MD had 11,400 Medicare Part D claims for 649 beneficiaries; the average among family medicine physician prescribers was 3,544. Part D covers Medicare prescriptions only.
What is Ryan M. Siewert, MD's MIPS final score?
The 2023 MIPS final score is 83.8 of 100, reported for the practice group. The average among 454,083 clinicians with a measured score was 83.5.
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.