Dr. Samuel J. Youssef, MD
Cardiothoracic Surgery (Thoracic Surgery (Cardiothoracic Vascular Surgery) Physician)
1600 E Jefferson St, Suite 110
Seattle, WA 98122
Who else practices at this address →
King County includes primary care (5% of residents) and dental (4% of residents) and mental health (4% of residents) shortage areas. About shortage areas
- Medicare participating
At a glance
- Years since graduation
- 22
- In the NPI registry since
- 2008
- Medicare patients seen, 2024
- 115
The NPI date is when this clinician registered for a National Provider Identifier, the billing number used on health claims. It is not a license, graduation or board-certification date. NPIs were first issued in May 2005 and became required on claims in 2007–2008, so an early date usually means the clinician was already in practice before then. What an NPI is
Education and training
- 2008Registered with an NPI (national billing number; not a license date) — NPIs began in 2005, so practice likely started earlier
Medicare’s Care Compare data doesn’t list this clinician’s medical school. Undergraduate school, residency, fellowship, licensing exams and board certification aren’t in public federal data. Board certification can be confirmed with the certifying board (ABMS member boards for MDs, AOA boards for DOs).
Specialties and state licenses
-
Thoracic Surgery (Cardiothoracic Vascular Surgery) Physician primary
WA license MD 6014714 - Student in an Organized Health Care Education/Training Program
-
Surgery Physician
WA license ML20008340
As reported to the NPI registry. To confirm a license is current, check the state medical board.
Where they work
Hospitals
- Swedish Medical Center Seattle, WA
- Kadlec Regional Medical Center Richland, WA
- Swedish Medical Center / Cherry Hill Seattle, WA
- Evergreenhealth Medical Center Kirkland, WA
Medical groups
- Swedish Health Services (1,037 clinicians)
Hospitals this clinician lists with Medicare, and groups they bill Medicare through (Care Compare). Affiliation doesn’t mean they see patients at every location.
Medicare patients and services
- Medicare patients, 2024
- 115
- Services billed
- 413
- Patients’ average age
- 76
| Service | Times | Patients |
|---|---|---|
| New patient office or other outpatient visit, 60-74 minutes | 64 | 64 |
| Ultrasonic guidance during surgery | 41 | 40 |
| Initial hospital care with moderate level of medical decision making, if using time, at least 75 minutes | 40 | 40 |
| Established patient office or other outpatient visit, 40-54 minutes | 27 | 25 |
| Replacement of aortic valve through the skin and femoral artery | 18 | 18 |
| Replacement of aortic valve on heart-lung machine | 13 | 13 |
| Repair of ascending aorta with graft on heart-lung machine with valve suspension for aortic disease | 13 | 13 |
| Harvest of vein using an endoscope | 12 | 12 |
| Coronary artery bypass using artery graft, 1 graft | 12 | 12 |
Medicare fee-for-service only. CMS leaves out services billed for fewer than 11 patients. These figures describe a practice’s Medicare work; they aren’t a measure of quality.
Medicare prescriptions
| Drug | Prescriptions |
|---|---|
| Chlorhexidine Gluconate Other prescribers in Seattle, WA | 15 |
Prescriptions filled under Medicare Part D, including refills. CMS leaves out drugs prescribed fewer than 11 times.
Payments from drug and device companies
In 2025, 2 companies reported 4 payments worth $824 in total to this clinician.
| Artivion, Inc. | $778 |
|---|---|
| Bolton Medical Inc | $46.35 |
| Travel and Lodging | $592 |
|---|---|
| Food and Beverage | $232 |
What the payments were for
| Company | What it was for | Amount |
|---|---|---|
| Artivion, Inc. Oct 17, 2025 | Travel and Lodging AMDS-Ascyrus Medical · Cardiovascular and vascular surgery · travel to Las Vegas, NV · in-kind | $592 |
Each payment as the company reported it, with the products it named. Meals are counted in the totals above but not listed one by one.
From CMS Open Payments. A payment is not evidence of wrongdoing; many are for consulting, teaching or meals. Clinicians can review and dispute their records with CMS.