Quick answers
- Does Siamak Karimian accept Medicare assignment?
- Yes. Medicare's clinician data says Siamak Karimian 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 Siamak Karimian see?
- In 2024, CMS data shows 624 Original Medicare patients and 931 services for Siamak Karimian. This counts Original Medicare only and measures volume, not quality.
- What is Siamak Karimian's NPI number?
- 1225091812. 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 Siamak Karimian, 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 | 624 |
|---|---|
| Services billed to Medicare | 931 |
| Different services or procedures | 20 |
| Participating Medicare provider | Yes |
| Average age of these patients | 76 |
Most frequent services
- Routine electrocardiogram (ecg) using at least 12 leads with interpretation and report only (93010)607 services
- Ultrasound of heart with color-depicted blood flow, rate, direction and valve function (93306)164 services
- Ultrasound of heart, follow-up (93308)21 services
- Exercise or drug-induced heart stress test with electrocardiogram (ecg) with supervision by physician (93016)17 services
- Exercise or drug-induced heart stress test with electrocardiogram (ecg) with review by physician (93018)17 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 cholesterol69%
- Arthritis51%
- Ischemic heart disease45%
- Heart failure40%
- Atrial fibrillation40%
Hospitals where Siamak Karimian works
Medicare's Facility Affiliation Data lists Siamak Karimian 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.
- Adventist Health SonoraSonora, CA · Acute Care Hospital · Medicare rating: 3 of 5 stars · Emergency services: not listed by Medicare · CCN 050335
- Boone Hospital CenterColumbia, MO · Acute Care Hospital · Medicare rating: 4 of 5 stars · Emergency services: listed by Medicare · CCN 260068
- Mat-Su Regional Medical CenterPalmer, AK · Acute Care Hospital · Medicare rating: 3 of 5 stars · Emergency services: listed by Medicare · CCN 020006
- Providence St Mary Medical CenterWalla Walla, WA · Acute Care Hospital · Medicare rating: 3 of 5 stars · Emergency services: listed by Medicare · CCN 500002
- Uphs Marquette DLP HospitalMarquette, MI · Acute Care Hospital · Medicare rating: 3 of 5 stars · Emergency services: listed by Medicare · CCN 230054
Practice locations
Addresses where Siamak Karimian is enrolled with Medicare (CMS data updated October 2, 2026). The first 5 of 23; the Medicare profile lists all.
- 1 Mercado StDurango, CO 81301 (719) 776‑7600
- 1000 Greenley RdSonora, CA 95370 (209) 536‑5000
- 1001 Virginia Ave, Suite 302Hapeville, GA 30354
- 1134 Industry DrTukwila, WA 98188 (800) 786‑8015
- 115 Gibraltar RdHorsham, PA 19044 (800) 786‑8015
Group practices
Medicare enrollment lists Siamak Karimian as a member of these groups (CMS data updated October 2, 2026).
- Catholic Health Initiatives Colorado1,225 clinicians in the group
- Providence Health and Services - Washington270 clinicians in the group
- DLP Marquette Physician Practices Inc197 clinicians in the group
- Sonora Community Hospital133 clinicians in the group
- Watauga Medical Center Inc96 clinicians in the group
- Reono Bertagnolli a Medical Group47 clinicians in the group
Specialties
Other interventional cardiologists in Durango
Clinicians with the same Medicare primary specialty in Durango, CO — not a recommendation.
Other clinicians in Catholic Health Initiatives Colorado
Medicare enrollment lists these clinicians in the same group practice — not a recommendation.
Clinician information
| Credential | MD |
|---|---|
| Graduation year | 1980 (46 years since medical school) |
| Gender (as listed) | Male |
| Medicare assignment | Accepts (Medicare-approved amount as full payment) |
| NPI (National Provider Identifier) | 1225091812 |
| 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