Dr. Nicholas Thomas Thielen, MD
- Medicare services, 2024
- 149
- Medicare patients, 2024
- 55
- Part D claims, 2024
- 220
- Publications
- 1
- MIPS score, 2024
- 83
- Practice address
- 1305 W 18th Street, Sioux Falls, SD 57117
- Practice phone
- Call (605) 328-6758
- Professional email
- Get professional email
- Personal email
- Get personal email
- Mobile number
- Get mobile number
Primary practice
Sanford Medical Center - Unit
Acute Care Hospital-Unit · Sioux Falls, South Dakota
Find Dr. Thielen'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. Nicholas Thomas Thielen is a hospitalist in Sioux Falls, South Dakota
Dr. Thielen practices at Sanford Medical Center - Unit in Sioux Falls, South Dakota.
Dr. Thielen's NPI, 1326627902, was assigned on April 2, 2021. Dr. Thielen holds South Dakota license 15504.
- NPI
- 1326627902NPI Registry (opens in a new tab)
- Medicare PAC ID
- 1254584295
- NPI enumeration date
- April 2, 2021
- NPI status
- Active
- Accepts Medicare assignment
- Yes
- Practice phone
- (605) 328-6758
- Professional email
- Get email
- Personal email
- Get email
- Mobile number
- Get number
- Sex
- Male
- Estimated age
- 31
- Medical school graduation
- 2021
Sources: NPPES NPI Registry (CMS); Dmand AI Professional Profile Data; Dmand AI Affiliation Data; and Doctors and Clinicians National Downloadable File (CMS)
Dr. Nicholas Thomas Thielen practices at Sanford Medical Center - Unit in Sioux Falls, South Dakota
Dr. Thielen's primary practice is Sanford Medical Center - Unit, at 1305 W 18th Street, Sioux Falls, SD 57117 in Minnehaha County. The practice phone is (605) 328-6758.
- Sanford Medical Center - Unit1305 W 18th Street, Sioux Falls, SD 57117 · Minnehaha CountyPhone(605) 328-6758
Source: Dmand AI Affiliation Data
Dr. Nicholas Thomas Thielen is affiliated with 6 sites of care and 1 medical group
Dr. Thielen's primary practice is Sanford Medical Center - Unit in Sioux Falls, South Dakota. Dr. Thielen is also affiliated with Sanford USD Medical Center. The medical group on file is Sanford Vascular Associates. Dmand AI also links Dr. Thielen to 3 more hospitals and 1 imaging center, each named with a free account.
Source: Dmand AI Affiliation Data
Dmand AI tracks the EHR system at Dr. Nicholas Thomas Thielen's practice
Dmand AI tracks the electronic health record (EHR) system at each site where Dr. Thielen practices, 6 sites in all. Vendor and product names are available with a free account.
| Site | EHR vendor and product |
|---|---|
| Sanford Medical Center - Unit | Available with a free account |
| +5 more affiliated sites | Available with a free account |
Source: Dmand AI Technology Install Data
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Dr. Nicholas Thomas Thielen is one of 99 hospitalists in South Dakota
Hospitalist is Dr. Thielen's primary specialty in the NPI Registry, under taxonomy code 208M00000X. Dr. Thielen is licensed in South Dakota.
Specialties and state licenses
- Hospitalist, South DakotaPrimary
Hospitalists near Dr. Thielen
Counts of hospitalists 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. Nicholas Thomas Thielen billed Medicare for 149 services in 2024
CMS data shows 149 Medicare services from Dr. Thielen across 3 procedure codes in 2024, for 55 Medicare patients. Medicare paid $10,146 for them. Every service was in a facility, such as a hospital, rather than an office.
Dr. Thielen compared with the South Dakota median for hospitalists, 2024
- Dr. Thielen
- South Dakota median
- Medicare services
- 149vs 52872% below
- Medicare patients
- 55vs 21875% below
- Part D claims
- 26vs 4745% below
Medians across 93 hospitalists in South Dakota with Dmand AI profiles that report each measure.
Dr. Thielen'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. Thielen and other hospitalists in South Dakota.
Sources: Medicare Physician & Other Practitioners - by Provider and Service (CMS), 2024 data; and Dmand AI Peer Benchmarks
Dr. Nicholas Thomas Thielen treated 55 Medicare patients in 2024, average age 70
CMS counts 55 Medicare patients who saw Dr. Thielen in 2024. The largest group is 75 to 84, with 21 patients. 75% of them have arthritis, and 75% have high blood pressure. 35% are also on Medicaid. Their average risk score is 2.77, where 1.00 is the Medicare average, so they are sicker than most Medicare patients.
Across all payers, Dmand AI patient panel data puts Dr. Thielen's median patient age at 78, with 55% women.
Dr. Thielen's Medicare patients by age, 2024
CMS leaves out age groups with fewer than 11 patients.
Dr. Thielen's Medicare patients by sex, 2024
- Women2444%
- Men3156%
Chronic conditions among Dr. Thielen's Medicare patients, 2024
- Arthritis75%
- High blood pressure75%
- High cholesterol75%
- Ischemic heart disease62%
- Mood disorders55%
- Anxiety53%
- Chronic kidney disease53%
- Depression53%
Share of Medicare patients with each condition. A patient can have several.
Dr. Thielen's patients across all payers
Dmand AI patient panel data covers Medicare, Medicaid and commercial patients.
Patient panel by age, all payers
Median age 78
Patient panel by sex, all payers
- Women55%
- Men45%
Sources: Dmand AI Patient Panel Data; and Medicare Physician & Other Practitioners - by Provider (CMS), 2024 data
Dr. Nicholas Thomas Thielen wrote 220 Medicare Part D claims in 2024
In 2024, Dr. Thielen wrote 220 Medicare Part D claims for 68 patients. 87% of them were for generic drugs. CMS names the drug for 26 of them, across 2 drugs with 11 or more claims each, at $247 in total drug cost. In 2023, CMS named 14 claims across 1 drug.
Dr. Thielen's Part D claims by kind of drug, 2024
- Generic192 claims87%
- Brand-name28 claims13%
Dr. Thielen'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. Thielen's Part D claims, 2024
- Antibiotics10%21 of 220 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: 142024: 2686%
Drugs named by CMS: 2 in 2024, 1 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
Dr. Nicholas Thomas Thielen scored 83 out of 100 in Medicare's MIPS program for 2024
CMS publishes a Merit-based Incentive Payment System (MIPS) score of 83 out of 100 for Dr. Thielen for performance year 2024, reported as part of a group. Dr. Thielen accepts Medicare assignment, so Medicare's approved amount is taken as full payment.
- Accepts Medicare assignment
- Yes
Dr. Thielen's MIPS scores, performance year 2024
- 83of 100Final score
- 75.9of 100Quality
- 100of 100Promoting Interoperability
- 40of 100Improvement Activities
- 69of 100Cost
Each score is out of 100. The final score weighs the categories CMS scored for this clinician.
Sources: Doctors and Clinicians National Downloadable File (CMS); and Clinician Public Reporting: Overall MIPS Performance (CMS), 2024 data, released September 10, 2026
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Dr. Nicholas Thomas Thielen has 1 publication on record
Dmand AI links 1 paper to Dr. Thielen in 2021.
Recent publications by Dr. Thielen
See who Dr. Thielen researches with
Physician Network Discovery turns co-authorship, shared hospitals and shared groups into a map of who Dr. Thielen works with, so you can find a warm path to the right hospitalists.
Sources: PubMed (National Library of Medicine); and Dmand AI Research Linkage
Sources for Dr. Nicholas Thomas Thielen'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 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)Clinician Public Reporting: Overall MIPS Performance (CMS) (opens in a new tab) |
| Publications, topics and co-authors | PubMed (National Library of Medicine) (opens in a new tab)Dmand AI Research Linkage |
| 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. Nicholas Thomas Thielen
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. Nicholas Thomas Thielen's NPI number?
Dr. Nicholas Thomas Thielen's NPI number is 1326627902. It was assigned on April 2, 2021, and it is active in the NPI Registry.
What kind of doctor is Dr. Nicholas Thomas Thielen?
Dr. Nicholas Thomas Thielen is a hospitalist in Sioux Falls, South Dakota. The primary specialty in the NPI Registry is Hospitalist Physician (taxonomy code 208M00000X).
Where does Dr. Nicholas Thomas Thielen practice?
Dr. Thielen practices at 1305 W 18th Street, Sioux Falls, SD 57117. Dr. Thielen's primary practice is Sanford Medical Center - Unit in Sioux Falls, South Dakota. Dmand AI also links Dr. Thielen to 3 hospitals and 1 imaging center.
What is Dr. Nicholas Thomas Thielen's office phone number?
The practice phone on file for Dr. Thielen is (605) 328-6758.
What is Dr. Nicholas Thomas Thielen's medical license number?
Dr. Thielen holds South Dakota license 15504.
Which hospitals is Dr. Nicholas Thomas Thielen affiliated with?
Dr. Thielen is affiliated with Sanford USD Medical Center. Dmand AI links Dr. Thielen to 4 more hospitals.
What medical group is Dr. Nicholas Thomas Thielen part of?
Dr. Thielen is linked to Sanford Vascular Associates.
Does Dr. Nicholas Thomas Thielen accept Medicare?
Yes. CMS data shows Dr. Thielen billed Medicare for 149 services in 2024, and Dr. Thielen accepts Medicare assignment.
What is Dr. Nicholas Thomas Thielen's MIPS score?
Dr. Thielen's MIPS final score for performance year 2024 is 83 out of 100, reported as part of a group.
How many Medicare patients does Dr. Nicholas Thomas Thielen see?
CMS counts 55 Medicare patients who saw Dr. Thielen in 2024, with an average age of 70.
Show 4 more questionsShow fewer questions
What services does Dr. Nicholas Thomas Thielen bill to Medicare?
In 2024, Dr. Thielen's most billed Medicare services were hospital inpatient care (99232), hospital inpatient care (99239) and hospital inpatient care (99233).
What drugs does Dr. Nicholas Thomas Thielen prescribe most?
In 2024 Medicare Part D data, Dr. Thielen's most prescribed drugs by claims were Omeprazole and Levothyroxine Sodium.
How long has Dr. Nicholas Thomas Thielen been practicing?
Dr. Thielen graduated from medical school in 2021, 5 years ago.
Does Dr. Nicholas Thomas Thielen do research?
Dmand AI links 1 publication to Dr. Thielen.
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