Siyavash Mohandessi, MD

Medicare activity in 2024

Official CMS public-use data for Siyavash Mohandessi, 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.

Most frequent services

1. Insertion of needle into vein for collection of blood sample (36415)178 services
2. Established patient office or other outpatient visit with moderate level of decision making, if using time, 30 minutes or more (99214)97 services
3. Annual wellness visit, includes a personalized prevention plan of service (pps), subsequent visit (G0439)65 services
4. Blood test, comprehensive group of blood chemicals (80053)63 services
5. Hemoglobin a1c level (83036)63 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 cholesterol75%
• High blood pressure67%
• Arthritis34%
• Diabetes27%
• Ischemic heart disease21%
• Cancer (breast, colorectal, lung, prostate, endometrial or leukemia/lymphoma)20%

Hospitals where Siyavash Mohandessi works

Medicare's Facility Affiliation Data lists Siyavash Mohandessi 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.

• Legacy Salmon Creek Medical CenterVancouver, WA · Acute Care Hospital · Medicare rating: 4 of 5 stars · Emergency services: listed by Medicare · CCN 500150

Practice locations

Addresses where Siyavash Mohandessi is enrolled with Medicare (CMS data updated October 2, 2026).

• 2525 NE 139th StVancouver, WA 98686 (360) 882‑2778

Group practices

Medicare enrollment lists Siyavash Mohandessi as a member of this group (CMS data updated October 2, 2026).

• The Vancouver Clinic Inc PS590 clinicians in the group

Specialties

• Family Practiceprimary

Find other Family Practice doctors in Washington →

Other family doctors in Vancouver

Clinicians with the same Medicare primary specialty in Vancouver, WA — not a recommendation.

• Cameron C. Anderson, MD
• Kirk Patrick M. Uy, MD
• Denise S. Palke, MD
• Chad A. Spain, MD
• Julian Savu, MD
• Brenda D. Roberts, MD
• Abhinit S. Jawanda, MD
• Heidi L. Kjos, MD

All family doctors in Vancouver →

Other clinicians in The Vancouver Clinic Inc PS

Medicare enrollment lists these clinicians in the same group practice — not a recommendation.

• Aspen Stuart, MD
• Samreen Khan, MD
• Darcy Robbins, MD
• Cameron C. Anderson, MD
• Kanuboddu N. Reddy, MD
• Elaine Marie A. Ballar, PA

Clinician information

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

1. Facility Affiliation Data — Centers for Medicare & Medicaid Services (CMS), data updated October 2, 2026, retrieved October 29, 2026
2. Hospital General Information — CMS, data updated October 26, 2026, retrieved November 13, 2026
3. National Downloadable File (Doctors and Clinicians) — CMS, data updated October 2, 2026, retrieved October 29, 2026
4. Medicare Physician & Other Practitioners - by Provider — CMS, data year 2024, released May 21, 2026; Medicare Physician & Other Practitioners - by Provider and Service
5. NPI Registry — U.S. Department of Health and Human Services (NPPES), the clinician’s official record
6. Medicare Care Compare — official Medicare tool to look up clinicians