Dr. Brian Joel Tjarks, MD
- Medicare services, 2024
- 4,928
- Medicare patients, 2024
- 2,324
- Hospital affiliations
- 5
- Industry payments
- $13
- Medical groups
- 2
- Practice address
- 1325 S Cliff Ave Post Office Box 5045, Sioux Falls, SD 57117
- Practice phone
- Call (605) 322-8000
- Professional email
- Get professional email
- Personal email
- Get personal email
- Mobile number
- Get mobile number
Find Dr. Tjarks' professional email, personal email and mobile number
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Dr. Brian Joel Tjarks is a pathologist in Sioux Falls, South Dakota
Dr. Tjarks practices at Avera McKennan Hospital & University Health Center in Sioux Falls, South Dakota, part of Avera Health.
Dr. Tjarks' NPI, 1093133258, was assigned on April 3, 2014. Dr. Tjarks graduated from Sanford School of Medicine of University of South Dakota in 2014. Dr. Tjarks holds South Dakota license 11290.
- NPI
- 1093133258NPI Registry (opens in a new tab)
- Medicare PAC ID
- 3678790292
- NPI enumeration date
- April 3, 2014
- NPI status
- Active
- Accepts Medicare assignment
- Yes
- Practice phone
- (605) 322-8000
- Professional email
- Get email
- Personal email
- Get email
- Mobile number
- Get number
- Sex
- Male
- Estimated age
- 38
- Medical school graduation
- 2014
Sources: NPPES NPI Registry (CMS); Dmand AI Professional Profile Data; Dmand AI Affiliation Data; and Doctors and Clinicians National Downloadable File (CMS)
Dr. Brian Joel Tjarks practices at Avera McKennan Hospital & University Health Center in Sioux Falls, South Dakota
Dr. Tjarks' primary practice is Avera McKennan Hospital & University Health Center, at 1325 S Cliff Ave Post Office Box 5045, Sioux Falls, SD 57117 in Minnehaha County. The practice phone is (605) 322-8000.
- Avera McKennan Hospital & University Health Center1325 S Cliff Ave Post Office Box 5045, Sioux Falls, SD 57117 · Minnehaha CountyPhone(605) 322-8000
Source: Dmand AI Affiliation Data
Dr. Brian Joel Tjarks is affiliated with 6 sites of care and 2 medical groups
Dr. Tjarks' primary practice is Avera McKennan Hospital & University Health Center in Sioux Falls, South Dakota, part of Avera Health. Dr. Tjarks is also affiliated with Avera Marshall Regional Medical Center. The medical group on file is Physicians Laboratory. Dmand AI also links Dr. Tjarks to 3 more hospitals, 1 group practice or clinic and 1 medical group, 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. Brian Joel Tjarks' practice
Dmand AI tracks the electronic health record (EHR) system at each site where Dr. Tjarks practices, 6 sites in all. Vendor and product names are available with a free account.
| Site | EHR vendor and product |
|---|---|
| Avera McKennan Hospital & University Health Center | Available with a free account |
| +5 more sites and 1 medical group | Available with a free account |
Source: Dmand AI Technology Install Data
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Dr. Brian Joel Tjarks is one of 34 pathologists in South Dakota
Anatomic pathology and clinical pathology is Dr. Tjarks' primary specialty in the NPI Registry, under taxonomy code 207ZP0102X. Dr. Tjarks is licensed in South Dakota.
Specialties and state licenses
- Anatomic pathology and clinical pathology, South DakotaPrimary
Pathologists near Dr. Tjarks
Counts of pathologists 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. Brian Joel Tjarks billed Medicare for 4,928 services in 2024
CMS data shows 4,928 Medicare services from Dr. Tjarks across 9 procedure codes in 2024, for 2,324 Medicare patients. Medicare paid $128,707 for them.
Dr. Tjarks' Medicare services by type, 2023 to 2024
- 2023
- 2024
- Lab and pathology
- 2023: 5,4762024: 4,92810%
Where Dr. Tjarks' Medicare services took place, 2024
- In an office1,05821%
- In a facility3,87079%
Dr. Tjarks compared with the South Dakota median for pathologists, 2024
- Dr. Tjarks
- South Dakota median
- Medicare services
- 4,928vs 2,2952.1 times
- Medicare patients
- 2,324vs 1,19794% above
Medians across 31 pathologists in South Dakota with Dmand AI profiles that report each measure.
Dr. Tjarks' 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.
Need commercial claims for Dr. Tjarks?
Medicare shows one payer. Book a meeting to get commercial claims data for Dr. Tjarks and other pathologists in South Dakota.
Sources: Medicare Physician & Other Practitioners - by Provider and Service (CMS), 2024 data; and Dmand AI Peer Benchmarks
Dr. Brian Joel Tjarks treated 2,324 Medicare patients in 2024, average age 75
CMS counts 2,324 Medicare patients who saw Dr. Tjarks in 2024. The largest group is 65 to 74, with 1,145 patients. 71% of them have high blood pressure, and 71% have high cholesterol. 4% are also on Medicaid. Their average risk score is 1.06, where 1.00 is the Medicare average.
Across all payers, Dmand AI patient panel data puts Dr. Tjarks' median patient age at 72, with 53% women.
Dr. Tjarks' Medicare patients by age, 2024
Dr. Tjarks' Medicare patients by sex, 2024
- Women1,19952%
- Men1,12548%
Chronic conditions among Dr. Tjarks' Medicare patients, 2024
- High blood pressure71%
- High cholesterol71%
- Arthritis38%
- Diabetes24%
- Ischemic heart disease23%
- Chronic kidney disease21%
- Atrial fibrillation18%
- Anxiety17%
Share of Medicare patients with each condition. A patient can have several.
Dr. Tjarks' patients across all payers
Dmand AI patient panel data covers Medicare, Medicaid and commercial patients.
Patient panel by age, all payers
Median age 72
Patient panel by sex, all payers
- Women53%
- Men46%
Sources: Dmand AI Patient Panel Data; and Medicare Physician & Other Practitioners - by Provider (CMS), 2024 data
How Dr. Brian Joel Tjarks takes part in Medicare
Dr. Tjarks 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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Dr. Brian Joel Tjarks received $13 in industry payments in 2024
CMS Open Payments shows 1 general payment to Dr. Tjarks from 1 drug or device company in 2024. Food and beverage make up the largest share, 100% of the total. Actelion Pharmaceuticals US, Inc. paid the most, $13.
Companies that paid Dr. Tjarks the most, 2024 to 2024
Share is of all general payments to this clinician.
Source: Open Payments (CMS), 2025 data, released July 7, 2026
Dr. Brian Joel Tjarks graduated from Sanford School of Medicine of University of South Dakota
Dr. Tjarks graduated from Sanford School of Medicine of University of South Dakota in 2014.
- Medical school
Source: Dmand AI Professional Profile Data
Sources for Dr. Brian Joel Tjarks'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) |
| 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) |
| 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. Brian Joel Tjarks
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. Brian Joel Tjarks' NPI number?
Dr. Brian Joel Tjarks' NPI number is 1093133258. It was assigned on April 3, 2014, and it is active in the NPI Registry.
What kind of doctor is Dr. Brian Joel Tjarks?
Dr. Brian Joel Tjarks is a pathologist in Sioux Falls, South Dakota. The primary specialty in the NPI Registry is Anatomic Pathology & Clinical Pathology Physician (taxonomy code 207ZP0102X).
Where does Dr. Brian Joel Tjarks practice?
Dr. Tjarks practices at 1325 S Cliff Ave Post Office Box 5045, Sioux Falls, SD 57117. Dr. Tjarks' primary practice is Avera McKennan Hospital & University Health Center in Sioux Falls, South Dakota, part of Avera Health. Dmand AI also links Dr. Tjarks to 3 hospitals, 1 group practice or clinic and 1 medical group.
What is Dr. Brian Joel Tjarks' office phone number?
The practice phone on file for Dr. Tjarks is (605) 322-8000.
What is Dr. Brian Joel Tjarks' medical license number?
Dr. Tjarks holds South Dakota license 11290.
Which hospitals is Dr. Brian Joel Tjarks affiliated with?
Dr. Tjarks practices at Avera McKennan Hospital & University Health Center in Sioux Falls, South Dakota. Dr. Tjarks is also affiliated with Avera Marshall Regional Medical Center. Dmand AI links Dr. Tjarks to 3 more hospitals.
What medical group is Dr. Brian Joel Tjarks part of?
Dr. Tjarks is linked to Physicians Laboratory. Dmand AI links Dr. Tjarks to 1 more medical group.
Does Dr. Brian Joel Tjarks accept Medicare?
Yes. CMS data shows Dr. Tjarks billed Medicare for 4,928 services in 2024, and Dr. Tjarks accepts Medicare assignment.
How many Medicare patients does Dr. Brian Joel Tjarks see?
CMS counts 2,324 Medicare patients who saw Dr. Tjarks in 2024, with an average age of 75.
What services does Dr. Brian Joel Tjarks bill to Medicare?
In 2024, Dr. Tjarks' most billed Medicare services were lab and pathology test (88305), lab and pathology test (88341) and lab and pathology test (88342).
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Where did Dr. Brian Joel Tjarks go to medical school?
Dr. Tjarks graduated from Sanford School of Medicine of University of South Dakota in 2014.
Has Dr. Brian Joel Tjarks received payments from drug or device companies?
CMS Open Payments shows $13 in general payments to Dr. Tjarks from 1 company from 2024 to 2024. The largest total came from Actelion Pharmaceuticals US, Inc.
How long has Dr. Brian Joel Tjarks been practicing?
Dr. Tjarks graduated from medical school in 2014, 12 years ago.
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