Quick answers
- Does Anastasia K. Siatras accept Medicare assignment?
- Yes. Medicare's clinician data says Anastasia K. Siatras accepts Medicare assignment (the Medicare-approved amount as full payment for covered services), as of October 2, 2026. Ask the office to confirm before your visit.
- How many Medicare patients does Anastasia K. Siatras see?
- In 2024, CMS data shows 2,290 Original Medicare patients and 5,370 services for Anastasia K. Siatras. This counts Original Medicare only and measures volume, not quality.
- What is Anastasia K. Siatras's NPI number?
- 1912163577. The NPI (National Provider Identifier) is the clinician's permanent federal ID; you can look it up in the official NPI Registry.
Medicare activity in 2024
Official CMS public-use data for Anastasia K. Siatras, data year 2024 (released May 21, 2026). It covers Original Medicare (fee-for-service) patients only, not Medicare Advantage or other insurance. It shows volume, not quality or outcomes. CMS hides any count of 10 or fewer patients.
| Original Medicare patients | 2,290 |
|---|---|
| Services billed to Medicare | 5,370 |
| Different services or procedures | 81 |
| Participating Medicare provider | Yes |
| Average age of these patients | 72 |
Most frequent services
- Screening mammography (77067)940 services
- Screening 3d breast mammography (77063)938 services
- X-ray of chest, 1 view (71045)786 services
- X-ray of chest, 2 views (71046)214 services
- Ct scan head or brain without contrast (70450)184 services
Chronic conditions among these patients
Share of this clinician’s Original Medicare patients with each condition, as published by CMS (it describes the patients, not the care given).
- High blood pressure75%
- High cholesterol68%
- Arthritis50%
- Diabetes38%
- COPD32%
- Ischemic heart disease30%
Hospitals where Anastasia K. Siatras works
Medicare's Facility Affiliation Data lists Anastasia K. Siatras at these hospitals (updated October 2, 2026). Each hospital page shows its address, phone, emergency services, Medicare rating and all its clinicians. Star rating and emergency services: Hospital General Information (CMS), data updated October 26, 2026.
- Community HospitalMunster, IN · Acute Care Hospital · Medicare rating: 3 of 5 stars · Emergency services: listed by Medicare · CCN 150125
- Methodist Hospitals IncGary, IN · Acute Care Hospital · Medicare rating: 1 of 5 stars · Emergency services: listed by Medicare · CCN 150002
- Northwestern Medicine Central Dupage HospitalWinfield, IL · Acute Care Hospital · Medicare rating: 5 of 5 stars · Emergency services: listed by Medicare · CCN 140242
- St Catherine Hospital IncEast Chicago, IN · Acute Care Hospital · Medicare rating: 4 of 5 stars · Emergency services: listed by Medicare · CCN 150008
- St Mary Medical Center IncHobart, IN · Acute Care Hospital · Medicare rating: 3 of 5 stars · Emergency services: listed by Medicare · CCN 150034
Practice locations
Addresses where Anastasia K. Siatras is enrolled with Medicare (CMS data updated October 2, 2026).
- 600 Grant StGary, IN 46402 (219) 886‑4000
- 7860 Burr StSchererville, IN 46375 (219) 864‑2900
- 8701 BroadwayMerrillville, IN 46410 (219) 738‑5500
Group practices
Medicare enrollment lists Anastasia K. Siatras as a member of these groups (CMS data updated October 2, 2026).
- N W Indiana Radiology Services, PC15 clinicians in the group
- Advanced Imaging Center LLC12 clinicians in the group
Specialties
- Diagnostic Radiologyprimary
Other radiologists in Gary
Clinicians with the same Medicare primary specialty in Gary, IN — not a recommendation.
Other clinicians in N W Indiana Radiology Services, PC
Medicare enrollment lists these clinicians in the same group practice — not a recommendation.
Clinician information
| Credential | DO |
|---|---|
| Graduation year | 2006 (20 years since medical school) |
| Gender (as listed) | Female |
| Medicare assignment | Accepts (Medicare-approved amount as full payment) |
| NPI (National Provider Identifier) | 1912163577 |
| Corrections | Report an error or suggest an update → |
Most corrections must be made at the source: clinicians update their NPI Registry record (NPPES) and their Medicare enrollment (PECOS); this page follows the next data release.
Sources
- Facility Affiliation Data — Centers for Medicare & Medicaid Services (CMS), data updated October 2, 2026, retrieved October 29, 2026
- Hospital General Information — CMS, data updated October 26, 2026, retrieved November 13, 2026
- National Downloadable File (Doctors and Clinicians) — CMS, data updated October 2, 2026, retrieved October 29, 2026
- Medicare Physician & Other Practitioners - by Provider — CMS, data year 2024, released May 21, 2026; Medicare Physician & Other Practitioners - by Provider and Service
- NPI Registry — U.S. Department of Health and Human Services (NPPES), the clinician’s official record
- Medicare Care Compare — official Medicare tool to look up clinicians