Dr. Sam S. Ahn, MD
Vascular Surgery (Vascular Surgery Physician)
1082 Glendon Ave
Los Angeles, CA 90024
Who else practices at this address →
Los Angeles County includes primary care (7% of residents) and mental health (13% of residents) shortage areas. About shortage areas
- Medicare participating
At a glance
- Years since graduation
- 48
- In the NPI registry since
- 2006
- Medicare patients seen, 2024
- 117
Licensed in Texas since 1978, according to the Texas Medical Board. We show license dates only for the states that publish them in bulk; see which states do. For other states, check the state medical board.
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
- 2006Registered 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
-
Vascular Surgery Physician primary
TX license F1333 (first issued 1978; active)
As reported to the NPI registry. To confirm a license is current, check the state medical board.
Where they work
Hospitals
- Saint John's Health Center Santa Monica, CA
- Methodist Dallas Medical Center Dallas, TX
Medical groups
- University Vascular Associates Inc (5 clinicians)
- Dfw Vascular Group LLP (4 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
- 117
- Services billed
- 1,331
- Patients’ average age
- 71
| Service | Times | Patients |
|---|---|---|
| Ultrasound evaluation of blood vessel with review by radiologist, each additional vessel | 225 | 38 |
| Ultrasound of leg arteries or artery grafts | 151 | 95 |
| Use of a drug to induce depression of consciousness by physician performing a procedure, each additional 15 minutes | 150 | 27 |
| Established patient office or other outpatient visit, 30-39 minutes | 135 | 88 |
| Ultrasound study of arm and leg arteries | 134 | 101 |
| Ultrasound study of arm or leg veins with compression and maneuvers | 122 | 97 |
| Complete ultrasound study of arm and leg arteries | 104 | 64 |
| Ultrasound of both sides of head and neck blood flow | 88 | 81 |
| Ultrasonic guidance for blood vessel access | 75 | 52 |
| Balloon dilation of vein with review by radiologist, each additional vein | 65 | 18 |
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 |
|---|---|
| Clopidogrel (clopidogrel bisulfate) Other prescribers in Los Angeles, CA | 189 |
| Eliquis (apixaban) Other prescribers in Los Angeles, CA | 72 |
| Xarelto (rivaroxaban) Other prescribers in Los Angeles, CA | 42 |
| Cilostazol Other prescribers in Los Angeles, CA | 22 |
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, 10 companies reported 14 payments worth $821 in total to this clinician.
| Endologix LLC | $277 |
|---|---|
| UCB, Inc. | $193 |
| Novartis Pharmaceuticals Corporation | $89.75 |
| Axogen | $78.33 |
| Medtronic, Inc. | $75.90 |
| Angiodynamics, Inc. | $28.06 |
| Genentech USA, Inc. | $23.34 |
| Bard Peripheral Vascular, Inc. | $21.23 |
| Food and Beverage | $821 |
|---|
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.