Thomas Allen Viereck, CNP
- Medicare patients, 2024
- 285
- Part D claims, 2024
- 1,029
- Hospital affiliations
- 3
- Industry payments
- $21
- Medical groups
- 4
- Practice address
- 501 Summit St, Yankton, SD 57078
- Practice phone
- Call (605) 668-8000
- Professional email
- Get professional email
- Personal email
- Get personal email
- Mobile number
- Get mobile number
Primary practice
Find Thomas Viereck'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.
Thomas Allen Viereck is a nurse practitioner in Yankton, South Dakota
Thomas Viereck practices at Avera Sacred Heart Hospital in Yankton, South Dakota, part of Avera Health.
Thomas Viereck's NPI, 1518526599, was assigned on June 12, 2019. Thomas Viereck holds South Dakota license CP001582.
- NPI
- 1518526599NPI Registry (opens in a new tab)
- Medicare PAC ID
- 6406183565
- NPI enumeration date
- June 12, 2019
- NPI status
- Active
- Accepts Medicare assignment
- Yes
- Practice phone
- (605) 668-8000
- Professional email
- Get email
- Personal email
- Get email
- Mobile number
- Get number
- Sex
- Male
- Estimated age
- 33
- Medical school graduation
- 2019
Sources: NPPES NPI Registry (CMS); Dmand AI Professional Profile Data; Dmand AI Affiliation Data; and Doctors and Clinicians National Downloadable File (CMS)
Thomas Allen Viereck practices at Avera Sacred Heart Hospital in Yankton, South Dakota
Thomas Viereck's primary practice is Avera Sacred Heart Hospital, at 501 Summit St, Yankton, SD 57078 in Yankton County. The practice phone is (605) 668-8000.
- Avera Sacred Heart Hospital501 Summit St, Yankton, SD 57078 · Yankton CountyPhone(605) 668-8000
Source: Dmand AI Affiliation Data
Thomas Allen Viereck is affiliated with 5 sites of care and 4 medical groups
Thomas Viereck's primary practice is Avera Sacred Heart Hospital in Yankton, South Dakota, part of Avera Health. Thomas Viereck is also affiliated with Sanford Vermillion Medical Center. The medical group on file is Avera Creighton Clinic. Dmand AI also links Thomas Viereck to 1 more hospital, 3 medical groups, 1 group practice or clinic and 1 ambulatory surgery center, each named with a free account.
Sources: Dmand AI Affiliation Data; and Dmand AI Org Hierarchy Data
Dmand AI tracks the EHR system at Thomas Allen Viereck's practice
Dmand AI tracks the electronic health record (EHR) system at each site where Thomas Viereck practices, 5 sites in all. Vendor and product names are available with a free account.
| Site | EHR vendor and product |
|---|---|
| Avera Sacred Heart Hospital | Available with a free account |
| +4 more sites and 3 medical groups | Available with a free account |
Source: Dmand AI Technology Install Data
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Thomas Allen Viereck is one of 404 nurse practitioners in South Dakota
Nurse practitioner is Thomas Viereck's primary specialty in the NPI Registry, under taxonomy code 363L00000X. Thomas Viereck is licensed in South Dakota.
Specialties and state licenses
- Nurse practitioner, South DakotaPrimary
Nurse practitioners near Thomas Viereck
Counts of nurse practitioners 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
Thomas Allen Viereck treated 285 Medicare patients in 2024, average age 74
CMS counts 285 Medicare patients who saw Thomas Viereck in 2024. The largest group is 65 to 74, with 151 patients. 75% of them have arthritis, and 72% have high blood pressure. 9% are also on Medicaid. Their average risk score is 1.09, where 1.00 is the Medicare average.
Across all payers, Dmand AI patient panel data puts Thomas Viereck's median patient age at 67, with 56% women.
Thomas Viereck's Medicare patients by age, 2024
Thomas Viereck's Medicare patients by sex, 2024
- Women18164%
- Men10436%
Chronic conditions among Thomas Viereck's Medicare patients, 2024
- Arthritis75%
- High blood pressure72%
- High cholesterol62%
- Diabetes22%
- Anxiety21%
- Chronic kidney disease20%
- Mood disorders20%
- Depression19%
Share of Medicare patients with each condition. A patient can have several.
Thomas Viereck'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
- Women56%
- Men44%
Sources: Dmand AI Patient Panel Data; and Medicare Physician & Other Practitioners - by Provider (CMS), 2024 data
Thomas Allen Viereck wrote 1,029 Medicare Part D claims in 2024
In 2024, Thomas Viereck wrote 1,029 Medicare Part D claims for 282 patients. 100% of them were for generic drugs.
Thomas Viereck's Part D claims by kind of drug, 2024
- Generic1,026 claims100%
- Brand-name and other3 claims0%
Drug classes CMS tracks in Thomas Viereck's Part D claims, 2024
- Opioids73%747 of 1,029 claims
- Antibiotics14%140 of 1,029 claims
Share of all Part D claims for each drug class CMS reports on. Classes with no claims are left out.
Source: Medicare Part D Prescribers - by Provider (CMS), 2024 data
How Thomas Allen Viereck takes part in Medicare
Thomas Viereck accepts Medicare assignment, so Medicare's approved amount is taken as full payment.
- Accepts Medicare assignment
- Yes
Source: Doctors and Clinicians National Downloadable File (CMS)
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Thomas Allen Viereck received $21 in industry payments in 2025
CMS Open Payments shows 1 general payment to Thomas Viereck from 1 drug or device company in 2025. Food and beverage make up the largest share, 100% of the total. ConvaTec Inc. paid the most, $21.
Companies that paid Thomas Viereck the most, 2025 to 2025
Share is of all general payments to this clinician.
Source: Open Payments (CMS), 2025 data, released July 7, 2026
Sources for Thomas Allen Viereck'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 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 (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) |
| Industry payments | Open Payments (CMS) (opens in a new tab) |
| 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 Thomas Allen Viereck
Spotted something out of date? Email hello@dmand.ai and we will check the record. Contact details live in the free trial.
What is Thomas Allen Viereck's NPI number?
Thomas Allen Viereck's NPI number is 1518526599. It was assigned on June 12, 2019, and it is active in the NPI Registry.
What does Thomas Allen Viereck specialize in?
Thomas Allen Viereck is a nurse practitioner in Yankton, South Dakota. The primary specialty in the NPI Registry is Nurse Practitioner (taxonomy code 363L00000X).
Where does Thomas Allen Viereck practice?
Thomas Viereck practices at 501 Summit St, Yankton, SD 57078. Thomas Viereck's primary practice is Avera Sacred Heart Hospital in Yankton, South Dakota, part of Avera Health. Dmand AI also links Thomas Viereck to 1 hospital, 3 medical groups, 1 group practice or clinic and 1 ambulatory surgery center.
What is Thomas Allen Viereck's office phone number?
The practice phone on file for Thomas Viereck is (605) 668-8000.
What is Thomas Allen Viereck's medical license number?
Thomas Viereck holds South Dakota license CP001582.
Which hospitals is Thomas Allen Viereck affiliated with?
Thomas Viereck practices at Avera Sacred Heart Hospital in Yankton, South Dakota. Thomas Viereck is also affiliated with Sanford Vermillion Medical Center. Dmand AI links Thomas Viereck to 1 more hospital.
What medical group is Thomas Allen Viereck part of?
Thomas Viereck is linked to Avera Creighton Clinic. Dmand AI links Thomas Viereck to 3 more medical groups.
Does Thomas Allen Viereck accept Medicare?
Yes. CMS lists Thomas Viereck as accepting Medicare assignment.
How many Medicare patients does Thomas Allen Viereck see?
CMS counts 285 Medicare patients who saw Thomas Viereck in 2024, with an average age of 74.
Has Thomas Allen Viereck received payments from drug or device companies?
CMS Open Payments shows $21 in general payments to Thomas Viereck from 1 company from 2025 to 2025. The largest total came from ConvaTec Inc.
How long has Thomas Allen Viereck been practicing?
Thomas Viereck graduated from medical school in 2019, 7 years ago.
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