Dr. James Van Siatras, DO
- Medicare services, 2024
- 20
- Medicare patients, 2024
- 56
- Part D claims, 2024
- 55
- MIPS score, 2024
- 79
- Hospital affiliations
- 3
- Practice address
- 421 E State Highway 114, Southlake, TX 76092
- Practice phone
- Call (878) 654-4400
- Professional email
- Get professional email
- Personal email
- Get personal email
- Mobile number
- Get mobile number
Primary practice
Find Dr. Siatras' 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. James Van Siatras is a general surgeon in Merrillville, Indiana
Dr. Siatras practices at Methodist Southlake Medical Center in Southlake, Texas, part of Methodist Hospitals of Dallas.
Dr. Siatras' NPI, 1164672572, was assigned on September 22, 2008. Dr. Siatras graduated from Chicago College of Osteopathy in 2006. Dr. Siatras holds Illinois license 125050873.
- NPI
- 1164672572NPI Registry (opens in a new tab)
- Medicare PAC ID
- 9234397159
- NPI enumeration date
- September 22, 2008
- NPI status
- Active
- Accepts Medicare assignment
- Yes
- Practice phone
- (878) 654-4400
- Professional email
- Get email
- Personal email
- Get email
- Mobile number
- Get number
- Sex
- Male
- Estimated age
- 46
- Medical school graduation
- 2006
Sources: NPPES NPI Registry (CMS); Dmand AI Professional Profile Data; Dmand AI Affiliation Data; and Doctors and Clinicians National Downloadable File (CMS)
Dr. James Van Siatras practices in Southlake and Merrillville
Dr. Siatras' primary practice is Methodist Southlake Medical Center, at 421 E State Highway 114, Southlake, TX 76092 in Tarrant County. The practice phone is (878) 654-4400. Dr. Siatras also practices at Methodist Southlake Hospital, 8701 Broadway, Merrillville, IN 46410.
- Methodist Southlake Medical CenterPrimary421 E State Highway 114, Southlake, TX 76092 · Tarrant CountyPhone(878) 654-4400
- Methodist Southlake Hospital8701 Broadway, Merrillville, IN 46410 · Lake CountyPhone(219) 886-4404
Sources: NPPES NPI Registry (CMS); Dmand AI Affiliation Data; and Dmand AI Practice Data
Dr. James Van Siatras is affiliated with 4 sites of care and 4 medical groups
Dr. Siatras' primary practice is Methodist Southlake Medical Center in Southlake, Texas, part of Methodist Hospitals of Dallas. Dr. Siatras is also affiliated with Olympia Fields Hospital. The medical group on file is Methodist Hospitals Endocrinology Services. Dmand AI also links Dr. Siatras to 1 more hospital, 3 medical groups and 1 group practice or clinic, 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. James Van Siatras' practice
Dmand AI tracks the electronic health record (EHR) system at each site where Dr. Siatras practices, 4 sites in all. Vendor and product names are available with a free account.
| Site | EHR vendor and product |
|---|---|
| Methodist Southlake Medical Center | Available with a free account |
| +3 more sites and 3 medical groups | Available with a free account |
Source: Dmand AI Technology Install Data
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Dr. James Van Siatras is one of 530 general surgeons in Indiana
Surgery is Dr. Siatras' primary specialty in the NPI Registry, under taxonomy code 208600000X. Dr. Siatras is licensed in Illinois.
Specialties and state licenses
- Surgery, IllinoisPrimary
General surgeons near Dr. Siatras
Counts of general surgeons 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. James Van Siatras billed Medicare for 20 services in 2024
CMS data shows 20 Medicare services from Dr. Siatras across 1 procedure code in 2024, all of them office visits, for 56 Medicare patients. Medicare paid $1,315 for them. Every service was in an office.
Dr. Siatras' Medicare services by type, 2023 to 2024
- 2023
- 2024
- Office and hospital visits
- 2023: 292024: 2031%
Dr. Siatras compared with the Indiana median for general surgeons, 2024
- Dr. Siatras
- Indiana median
- Medicare services
- 20vs 15687% below
- Medicare patients
- 56vs 13157% below
- Part D claims
- 23vs 4043% below
Medians across 526 general surgeons in Indiana with Dmand AI profiles that report each measure.
Dr. Siatras' 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. Siatras and other general surgeons in Indiana.
Sources: Medicare Physician & Other Practitioners - by Provider and Service (CMS), 2024 data; and Dmand AI Peer Benchmarks
Dr. James Van Siatras treated 56 Medicare patients in 2024, average age 67
CMS counts 56 Medicare patients who saw Dr. Siatras in 2024. The largest group is 65 to 74, with 22 patients. 75% of them have high blood pressure, and 66% have high cholesterol. 43% are also on Medicaid. Their average risk score is 1.68, 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. Siatras' median patient age at 62, with 67% women.
Dr. Siatras' Medicare patients by age, 2024
CMS leaves out age groups with fewer than 11 patients.
Dr. Siatras' Medicare patients by sex, 2024
- Women3868%
- Men1832%
Chronic conditions among Dr. Siatras' Medicare patients, 2024
- High blood pressure75%
- High cholesterol66%
- Arthritis50%
- COPD45%
- Anxiety43%
- Mood disorders41%
- Ischemic heart disease39%
- Diabetes38%
Share of Medicare patients with each condition. A patient can have several.
Dr. Siatras' patients across all payers
Dmand AI patient panel data covers Medicare, Medicaid and commercial patients.
Patient panel by age, all payers
Median age 62
Patient panel by sex, all payers
- Women67%
- Men32%
Sources: Dmand AI Patient Panel Data; and Medicare Physician & Other Practitioners - by Provider (CMS), 2024 data
Dr. James Van Siatras wrote 55 Medicare Part D claims in 2024
In 2024, Dr. Siatras wrote 55 Medicare Part D claims for 30 patients. 100% of them were for generic drugs. CMS names the drug for 23 of them, across 2 drugs with 11 or more claims each, at $88 in total drug cost. In 2023, CMS named 37 claims across 3 drugs.
Dr. Siatras' 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. Siatras' Part D claims, 2024
- Opioids27%15 of 55 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: 372024: 2338%
Drugs named by CMS: 2 in 2024, 3 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. James Van Siatras scored 79 out of 100 in Medicare's MIPS program for 2024
CMS publishes a Merit-based Incentive Payment System (MIPS) score of 79 out of 100 for Dr. Siatras for performance year 2024, reported as part of a group. Dr. Siatras accepts Medicare assignment, so Medicare's approved amount is taken as full payment.
- Accepts Medicare assignment
- Yes
Dr. Siatras' MIPS scores, performance year 2024
- 79of 100Final score
- 56.6of 100Quality
- 73of 100Promoting Interoperability
- 40of 100Improvement Activities
- 77of 100Cost
Each score is out of 100. The final score weighs the categories CMS scored for this clinician.
Colonoscopy: 1 to 10 procedures (CMS shows small counts as a range)
Hernia repair (minimally invasive): 1 to 10 procedures (CMS shows small counts as a range)
Hernia repair - groin (open): 1 to 10 procedures (CMS shows small counts as a range)
Removal of tissue: 1 to 10 procedures (CMS shows small counts as a range)
Upper gastrointestinal (GI) endoscopy for acid reflux: 1 to 10 procedures (CMS shows small counts as a range)
Sources: Doctors and Clinicians National Downloadable File (CMS); Clinician Public Reporting: Overall MIPS Performance (CMS), 2024 data, released September 10, 2026; and Doctors and Clinicians Utilization Data (CMS)
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Dr. James Van Siatras received $59,017 in industry payments from 2016 to 2025
CMS Open Payments shows 106 general payments to Dr. Siatras from 14 drug and device companies from 2016 to 2025. Education make up the largest share, 89% of the total. Intuitive Surgical, Inc. paid the most, $55,384.
General payments to Dr. Siatras by program year, 2016 to 2025
General payments to Dr. Siatras by kind, 2016 to 2025
- Education$52,50089%
- Food and beverage$3,6856%
- Travel and lodging$1,4462%
- Consulting fees$8851%
- Speaker and faculty fees$5001%
Companies that paid Dr. Siatras 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. James Van Siatras graduated from Chicago College of Osteopathy
Dr. Siatras graduated from Chicago College of Osteopathy in 2006.
- Medical school
Source: Dmand AI Professional Profile Data
Sources for Dr. James Van Siatras'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 | NPPES NPI Registry (CMS) (opens in a new tab)Dmand AI Affiliation DataDmand AI Practice 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)Clinician Public Reporting: Overall MIPS Performance (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. James Van Siatras
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. James Van Siatras' NPI number?
Dr. James Van Siatras' NPI number is 1164672572. It was assigned on September 22, 2008, and it is active in the NPI Registry.
What kind of doctor is Dr. James Van Siatras?
Dr. James Van Siatras is a general surgeon in Merrillville, Indiana. The primary specialty in the NPI Registry is Surgery Physician (taxonomy code 208600000X).
Where does Dr. James Van Siatras practice?
Dr. Siatras practices at 421 E State Highway 114, Southlake, TX 76092. Dr. Siatras also practices at 8701 Broadway, Merrillville, IN 46410. Dr. Siatras' primary practice is Methodist Southlake Medical Center in Southlake, Texas, part of Methodist Hospitals of Dallas. Dmand AI also links Dr. Siatras to 1 hospital, 3 medical groups and 1 group practice or clinic.
What is Dr. James Van Siatras' office phone number?
The practice phone on file for Dr. Siatras is (878) 654-4400.
What is Dr. James Van Siatras' medical license number?
Dr. Siatras holds Illinois license 125050873.
Which hospitals is Dr. James Van Siatras affiliated with?
Dr. Siatras practices at Methodist Southlake Medical Center in Southlake, Texas. Dr. Siatras is also affiliated with Olympia Fields Hospital. Dmand AI links Dr. Siatras to 1 more hospital.
What medical group is Dr. James Van Siatras part of?
Dr. Siatras is linked to Methodist Hospitals Endocrinology Services. Dmand AI links Dr. Siatras to 3 more medical groups.
Does Dr. James Van Siatras accept Medicare?
Yes. CMS data shows Dr. Siatras billed Medicare for 20 services in 2024, and Dr. Siatras accepts Medicare assignment.
What is Dr. James Van Siatras' MIPS score?
Dr. Siatras' MIPS final score for performance year 2024 is 79 out of 100, reported as part of a group.
How many Medicare patients does Dr. James Van Siatras see?
CMS counts 56 Medicare patients who saw Dr. Siatras in 2024, with an average age of 67.
Show 5 more questionsShow fewer questions
What services does Dr. James Van Siatras bill to Medicare?
In 2024, Dr. Siatras' most billed Medicare services were office visit, established patient (99213).
Where did Dr. James Van Siatras go to medical school?
Dr. Siatras graduated from Chicago College of Osteopathy in 2006.
What drugs does Dr. James Van Siatras prescribe most?
In 2024 Medicare Part D data, Dr. Siatras' most prescribed drugs by claims were Hydrocodone-Acetaminophen and Omeprazole.
Has Dr. James Van Siatras received payments from drug or device companies?
CMS Open Payments shows $59,017 in general payments to Dr. Siatras from 14 companies from 2016 to 2025. The largest total came from Intuitive Surgical, Inc.
How long has Dr. James Van Siatras been practicing?
Dr. Siatras graduated from medical school in 2006, 20 years ago.
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