Dr. Ryan M. Siewert, MD
- Medicare services, 2024
- 4,475
- Medicare patients, 2024
- 698
- Part D claims, 2024
- 11,400
- Hospital affiliations
- 4
- Industry payments
- $2,160
- Practice address
- 1321 West Dakota Parkway, Williston, ND 58801
- Practice phone
- Call (701) 572-6120
- Professional email
- Get professional email
- Personal email
- Get personal email
- Mobile number
- Get mobile number
Primary practice
Trinity Health-TCC Western Dakota Surgery
Surgery Center - Medicare-Certified · Williston, North Dakota
Find Dr. Siewert'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. Ryan M. Siewert is a family medicine physician in Williston, North Dakota
Dr. Siewert practices at Trinity Health-TCC Western Dakota Surgery in Williston, North Dakota.
Dr. Siewert's NPI, 1528355500, was assigned on June 29, 2011. Dr. Siewert graduated from University of North Dakota School of Medicine in 2011. Dr. Siewert holds North Dakota license 12504.
- NPI
- 1528355500NPI Registry (opens in a new tab)
- Medicare PAC ID
- 2668690058
- NPI enumeration date
- June 29, 2011
- NPI status
- Active
- Accepts Medicare assignment
- Yes
- Practice phone
- (701) 572-6120
- Professional email
- Get email
- Personal email
- Get email
- Mobile number
- Get number
- Sex
- Male
- Estimated age
- 41
- Medical school graduation
- 2011
Sources: NPPES NPI Registry (CMS); Dmand AI Professional Profile Data; Dmand AI Affiliation Data; and Doctors and Clinicians National Downloadable File (CMS)
Dr. Ryan M. Siewert practices at Trinity Health-TCC Western Dakota Surgery in Williston, North Dakota
Dr. Siewert's primary practice is Trinity Health-TCC Western Dakota Surgery, at 1321 West Dakota Parkway, Williston, ND 58801. The practice phone is (701) 572-6120.
- Trinity Health-TCC Western Dakota Surgery1321 West Dakota Parkway, Williston, ND 58801Phone(701) 572-6120
Source: Dmand AI Affiliation Data
Dr. Ryan M. Siewert is affiliated with 8 sites of care and 1 medical group
Dr. Siewert's primary practice is Trinity Health-TCC Western Dakota Surgery in Williston, North Dakota. Dr. Siewert is also affiliated with CHI St. Alexius Health Williston. The medical group on file is Trinity Health. Dmand AI also links Dr. Siewert to 3 more hospitals, 1 home health agency, 1 hospice and 1 skilled nursing facility, 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. Ryan M. Siewert's practice
Dmand AI tracks the electronic health record (EHR) system at each site where Dr. Siewert practices, 8 sites in all. Vendor and product names are available with a free account.
| Site | EHR vendor and product |
|---|---|
| Trinity Health-TCC Western Dakota Surgery | Available with a free account |
| +7 more affiliated sites | Available with a free account |
Source: Dmand AI Technology Install Data
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Dr. Ryan M. Siewert is one of 438 family medicine physicians in North Dakota
Family medicine is Dr. Siewert's primary specialty in the NPI Registry, under taxonomy code 207Q00000X. Dr. Siewert is licensed in North Dakota.
Specialties and state licenses
- Family medicine, North DakotaPrimary
Family medicine physicians near Dr. Siewert
Counts of family medicine physicians 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. Ryan M. Siewert billed Medicare for 4,475 services in 2024
CMS data shows 4,475 Medicare services from Dr. Siewert across 23 procedure codes in 2024, for 698 Medicare patients. Medicare paid $125,770 for them. Every service was in an office.
Dr. Siewert's Medicare services by type, 2023 to 2024
- 2023
- 2024
- Other services
- 2023: 462024: 1,8613946%
- Office and hospital visits
- 2023: 1,0782024: 1,1143%
- Drugs given in the office
- 2023: 02024: 901
- Imaging
- 2023: 1752024: 469168%
- Tests and treatments
- 2023: 1072024: 13021%
Dr. Siewert compared with the North Dakota median for family medicine physicians, 2024
- Dr. Siewert
- North Dakota median
- Medicare services
- 4,475vs 34712.9 times
- Medicare patients
- 698vs 1973.5 times
- Part D claims
- 10,568vs 56118.8 times
Medians across 460 family medicine physicians in North Dakota with Dmand AI profiles that report each measure.
Dr. Siewert'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.
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Medicare shows one payer. Book a meeting to get commercial claims data for Dr. Siewert and other family medicine physicians in North Dakota.
Sources: Medicare Physician & Other Practitioners - by Provider and Service (CMS), 2024 data; and Dmand AI Peer Benchmarks
Dr. Ryan M. Siewert treated 698 Medicare patients in 2024, average age 74
CMS counts 698 Medicare patients who saw Dr. Siewert in 2024. The largest group is 65 to 74, with 338 patients. 71% of them have high blood pressure, and 61% have high cholesterol. 14% are also on Medicaid. Their average risk score is 0.95, where 1.00 is the Medicare average.
Across all payers, Dmand AI patient panel data puts Dr. Siewert's median patient age at 67, with 47% women.
Dr. Siewert's Medicare patients by age, 2024
Dr. Siewert's Medicare patients by sex, 2024
- Women42361%
- Men27539%
Chronic conditions among Dr. Siewert's Medicare patients, 2024
- High blood pressure71%
- High cholesterol61%
- Arthritis43%
- Diabetes28%
- Anxiety21%
- Depression19%
- Ischemic heart disease19%
- Mood disorders19%
Share of Medicare patients with each condition. A patient can have several.
Dr. Siewert's patients across all payers
Dmand AI patient panel data covers Medicare, Medicaid and commercial patients.
Patient panel by age, all payers
Median age 67
Patient panel by sex, all payers
- Women47%
- Men53%
Sources: Dmand AI Patient Panel Data; and Medicare Physician & Other Practitioners - by Provider (CMS), 2024 data
Dr. Ryan M. Siewert wrote 11,400 Medicare Part D claims in 2024
In 2024, Dr. Siewert wrote 11,400 Medicare Part D claims for 649 patients. 85% of them were for generic drugs. CMS names the drug for 10,568 of them, across 165 drugs with 11 or more claims each, at $823,426 in total drug cost. In 2023, CMS named 9,191 claims across 154 drugs.
Dr. Siewert's Part D claims by kind of drug, 2024
- Generic9,714 claims85%
- Brand-name1,558 claims14%
- Other128 claims1%
Dr. Siewert's most prescribed drugs by claims, 2024
CMS names a drug when it has 11 or more claims. Share is of the claims for drugs CMS names.
Drug classes CMS tracks in Dr. Siewert's Part D claims, 2024
- Opioids4%496 of 11,400 claims
- Antibiotics1%148 of 11,400 claims
- Antipsychotics, patients 65 and over1%72 of 11,400 claims
Share of all Part D claims for each drug class CMS reports on. Classes with no claims are left out.
Part D claims for drugs CMS names, 2023 to 2024
- 2023
- 2024
- Claims for drugs CMS names
- 2023: 9,1912024: 10,56815%
Drugs named by CMS: 165 in 2024, 154 in 2023.
Sources: Medicare Part D Prescribers - by Provider and Drug (CMS), 2024 data, released May 6, 2026; and Medicare Part D Prescribers - by Provider (CMS), 2024 data
How Dr. Ryan M. Siewert takes part in Medicare
Dr. Siewert accepts Medicare assignment, so Medicare's approved amount is taken as full payment.
- Accepts Medicare assignment
- Yes
Melanoma (skin cancer) excision: 1 to 10 procedures (CMS shows small counts as a range)
Removal of skin lesions: 1 to 10 procedures (CMS shows small counts as a range)
Skin biopsy: 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. Ryan M. Siewert received $2,160 in industry payments from 2016 to 2025
CMS Open Payments shows 188 general payments to Dr. Siewert from 18 drug and device companies from 2016 to 2025. Food and beverage make up the largest share, 98% of the total. Pfizer Inc. paid the most, $514.
General payments to Dr. Siewert by program year, 2016 to 2025
General payments to Dr. Siewert by kind, 2016 to 2025
- Food and beverage$2,12598%
- Education$352%
Companies that paid Dr. Siewert the most, 2016 to 2025
Share is of all general payments to this clinician.
Source: Open Payments (CMS), 2025 data, released July 7, 2026
Dr. Ryan M. Siewert graduated from University of North Dakota School of Medicine
Dr. Siewert graduated from University of North Dakota School of Medicine in 2011.
- Medical school
Source: Dmand AI Professional Profile Data
Sources for Dr. Ryan M. Siewert'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) |
| Part D prescribing | Medicare Part D Prescribers - by Provider and Drug (CMS) (opens in a new tab)Medicare Part D Prescribers - 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) |
| 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. Ryan M. Siewert
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. Ryan M. Siewert's NPI number?
Dr. Ryan M. Siewert's NPI number is 1528355500. It was assigned on June 29, 2011, and it is active in the NPI Registry.
What kind of doctor is Dr. Ryan M. Siewert?
Dr. Ryan M. Siewert is a family medicine physician in Williston, North Dakota. The primary specialty in the NPI Registry is Family Medicine Physician (taxonomy code 207Q00000X).
Where does Dr. Ryan M. Siewert practice?
Dr. Siewert practices at 1321 West Dakota Parkway, Williston, ND 58801. Dr. Siewert's primary practice is Trinity Health-TCC Western Dakota Surgery in Williston, North Dakota. Dmand AI also links Dr. Siewert to 3 hospitals, 1 home health agency, 1 hospice and 1 skilled nursing facility.
What is Dr. Ryan M. Siewert's office phone number?
The practice phone on file for Dr. Siewert is (701) 572-6120.
What is Dr. Ryan M. Siewert's medical license number?
Dr. Siewert holds North Dakota license 12504.
Which hospitals is Dr. Ryan M. Siewert affiliated with?
Dr. Siewert is affiliated with CHI St. Alexius Health Williston. Dmand AI links Dr. Siewert to 3 more hospitals.
What medical group is Dr. Ryan M. Siewert part of?
Dr. Siewert is linked to Trinity Health.
Does Dr. Ryan M. Siewert accept Medicare?
Yes. CMS data shows Dr. Siewert billed Medicare for 4,475 services in 2024, and Dr. Siewert accepts Medicare assignment.
How many Medicare patients does Dr. Ryan M. Siewert see?
CMS counts 698 Medicare patients who saw Dr. Siewert in 2024, with an average age of 74.
What services does Dr. Ryan M. Siewert bill to Medicare?
In 2024, Dr. Siewert's most billed Medicare services were medicare temporary code (Q9967), injected or infused drug (J0897) and office visit, established patient (99214).
Show 4 more questionsShow fewer questions
Where did Dr. Ryan M. Siewert go to medical school?
Dr. Siewert graduated from University of North Dakota School of Medicine in 2011.
What drugs does Dr. Ryan M. Siewert prescribe most?
In 2024 Medicare Part D data, Dr. Siewert's most prescribed drugs by claims were Levothyroxine Sodium, Atorvastatin Calcium and Lisinopril.
Has Dr. Ryan M. Siewert received payments from drug or device companies?
CMS Open Payments shows $2,160 in general payments to Dr. Siewert from 18 companies from 2016 to 2025. The largest total came from Pfizer Inc.
How long has Dr. Ryan M. Siewert been practicing?
Dr. Siewert graduated from medical school in 2011, 15 years ago.
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