Medicare Enrolled
Dr. Sam Ahn, MD
Vascular Surgery Physician · Los Angeles, CA
Practice pattern: Clinical Cardiology
— Primarily office-based clinical cardiology
Low-engagement
Very High
DATA COVERAGE
Data in 4 of 4 federal sources
Measures public federal data availability — not provider quality
Informational, not a quality rating.
This page presents federal public records about Dr. Ahn from CMS (NPPES, Open Payments, Medicare Provider Utilization, PECOS). It is not medical advice, an endorsement, or a judgment of clinical quality. Always consult the provider directly and a licensed clinician for medical decisions. Read methodology →
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What this data tells you about Dr. Ahn
Dr. Sam Ahn is a vascular surgery physician in Los Angeles, CA, with 19 years of NPI registration. Based on federal Medicare data, Dr. Ahn performed 1,873 Medicare services across 1,125 unique beneficiaries.
Between the years covered by Open Payments, Dr. Ahn received a total of $20,716 from 47 pharmaceutical and/or device companies across 129 individual payments. These payments are legal, publicly disclosed under the federal Sunshine Act, and common in vascular surgery physician. Most payments are for meals and travel — low-value interactions common across virtually all practicing physicians. Patients may wish to discuss these relationships with their provider.
The Data Coverage level for Dr. Ahn is Very High — reflecting how much public federal data is available about this provider. Patients are encouraged to use this data as one of several factors when choosing a healthcare provider.
✓ 19 years in practice
▲ Top 19% volume in CA
$20,716 industry payments
Medicare Practice Summary
Medicare Utilization ↗1,873
Medicare services
Top 19% in CA for vascular surgery physician
1,125
Unique beneficiaries
$238
Avg. Medicare payment
Medicare patients only (65+ / disabled) · How to read this →
~99 Medicare services per year of practice
Top procedures by volume
Ranked by number of services performed for Medicare patients. Avg. submitted charge is what the provider billed; avg. Medicare payment is what CMS paid.
| Procedure | Volume | Avg. paid | Avg. submitted |
|---|---|---|---|
| Additional blood vessel ultrasound evaluation An ultrasound exam of a blood vessel that includes a radiologist's review. This code applies to each additional vessel evaluated beyond the initial one. |
225 | $143 | $569 |
| Ultrasound of leg arteries or grafts An imaging test that uses sound waves to create pictures of the blood vessels in the legs or any surgical grafts present. |
151 | $208 | $673 |
| Additional sedation, per 15 minutes Administration of a drug to deepen sedation during a procedure. This code covers each additional 15-minute increment of sedation beyond the initial period. |
150 | $10 | $26 |
| Office visit, established patient (30-39 min) A follow-up office visit for an existing patient lasting between 30 and 39 minutes. The visit involves medical evaluation and management of the patient's condition. |
135 | $104 | $256 |
| Ultrasound of arm and leg arteries This procedure uses sound waves to create images of the blood vessels in the arms and legs. It allows healthcare providers to examine the structure and blood flow within these arteries. |
134 | $52 | $274 |
| Ultrasound of arm or leg veins An ultrasound exam of the veins in the arm or leg. The test uses sound waves to check blood flow and may include compression and other maneuvers. |
122 | $145 | $557 |
| Ultrasound of arm and leg arteries A non-invasive imaging test that uses sound waves to examine the blood vessels in the arms and legs. It evaluates blood flow and checks for blockages or other vascular issues. |
104 | $93 | $324 |
| Ultrasound of head and neck blood flow, bilateral An ultrasound exam that uses sound waves to visualize and assess blood flow in the vessels of both the head and the neck. |
88 | $141 | $566 |
| Ultrasound guidance for blood vessel access Use of ultrasound imaging to help locate and access a blood vessel. This guidance assists healthcare providers in performing procedures such as inserting IV lines or drawing blood. |
75 | $34 | $99 |
| Balloon dilation of vein, each additional vein This procedure involves using a balloon to widen a vein, with radiologist review. It is billed for each additional vein treated beyond the first. |
65 | $365 | $1,816 |
| Insertion of tube into second-order vein branch A procedure involving the placement of a tube into a secondary branch of a vein. |
61 | $442 | $2,332 |
| Office visit, established patient (20-29 min) An office visit for an existing patient lasting between 20 and 29 minutes. The visit involves medical evaluation and management of the patient's condition. |
61 | $69 | $204 |
| Complete ultrasound of aorta, vena cava, groin vessels or bypass grafts A complete ultrasound exam of the aorta, vena cava, groin vessels, or bypass grafts. This imaging test uses sound waves to visualize these blood vessels. |
58 | $130 | $503 |
| Ultrasound of blood vessel, initial vessel An ultrasound exam of a blood vessel that includes a radiologist's review of the initial vessel. |
52 | $824 | $3,822 |
| Sedation by physician, initial 15 minutes Administration of a drug to induce depression of consciousness by the physician performing a procedure. This code covers the initial 15 minutes of sedation for patients aged 5 years or older. |
41 | $46 | $119 |
| Blood draw (venipuncture) Insertion of a needle into a vein to collect a blood sample. |
37 | $7 | $29 |
| Ultrasound of arm or leg veins An ultrasound exam of the veins in one arm or leg using compression and other maneuvers to assess blood flow and check for blockages. |
32 | $85 | $373 |
| Radiologist review of head or neck vein imaging A radiologist examines images of the veins in the head or neck to evaluate their structure and function. |
31 | $104 | $426 |
| Radiologist review of arm or leg artery images A radiologist reviews images of the arteries in one or both arms or legs to assess blood flow and vessel health. |
30 | $138 | $479 |
| Radiologist review of abdominal aorta image A radiologist reviews images of the abdominal aorta to evaluate the blood vessel. |
26 | $102 | $396 |
| Balloon dilation of vein, initial vein A procedure to widen a vein using a balloon catheter, with radiologist review. |
25 | $1,013 | $4,171 |
| Review by radiologist of both arms and legs veins of both arms or legs image | 25 | $107 | $372 |
| New patient office visit (45-59 min) An initial office visit for a new patient lasting between 45 and 59 minutes. This code covers the total time spent by the physician or qualified healthcare professional on the date of the encounter. |
25 | $124 | $401 |
| Radiologist review of arm or leg artery image A radiologist reviews images of the arteries in the arm or leg. This process involves analyzing the visual data to assess the blood vessels. |
20 | $126 | $442 |
| Basic metabolic blood panel A blood test that measures a group of basic chemicals, including total calcium levels. |
20 | $8 | $24 |
| Hemoglobin blood test A blood test that measures the amount of hemoglobin, the protein in red blood cells that carries oxygen. |
19 | $2 | $7 |
| Artery plaque removal and stent insertion in leg This procedure involves removing plaque buildup from leg arteries and placing stents to keep the blood vessels open. |
17 | $9,440 | $40,159 |
| Radiologist review of major upper body vein image A radiologist reviews images of the major veins in the upper body to assess their structure and function. |
15 | $94 | $424 |
| Office visit, established patient (10-19 min) An office visit for an existing patient lasting 10 to 19 minutes. The visit involves medical evaluation and management of the patient's condition. |
15 | $42 | $135 |
| Comprehensive metabolic blood panel A blood test that measures a group of chemicals, including glucose, electrolytes, and kidney and liver function markers. |
14 | $10 | $22 |
How to read this data: This reflects Medicare patients only (typically 65+). Payment amounts are what Medicare paid the provider, not your out-of-pocket cost. A higher procedure volume generally indicates more experience with that procedure.
4.0% high complexity
54.1% medium
41.9% routine
Industry Payment Transparency
Open Payments through 2024 ↗$20,716
Total received (2018-2024)
Avg $2,959/year across 7 years
Top 16% in CA for vascular surgery physician
A higher payment rank reflects disclosed industry relationships (consulting, research, speaking) common among subspecialists — not wrongdoing.
47
Companies
129
Individual payments
All payments are legal and publicly reported · Not evidence of wrongdoing · How to interpret →
Payment profile
Industry payments classified by relationship type. Not all payments are equal — research and consulting reflect different relationships than speaking programs or meals.
Meals & Travel
Food, beverages, travel, and lodging — typically low-value
$17,645 (85.2%)
Speaking / Promotional
Speaker programs, honoraria, and industry-sponsored educational events
$2,696 (13.0%)
Consulting
Expert advisory fees, typically reflecting recognized clinical expertise
$375 (1.8%)
Payment trend by year
Annual totals from pharmaceutical and medical device companies.
2024
$1,339
2023
$3,703
2022
$13,430
2021
$484
2020
$159
2019
$1,080
2018
$521
Payments by company (2024)
Consulting
Speaking
Meals & Travel
Research
Koya Medical, Inc.
$608
Endologix LLC
$285
Boston Scientific Corporation
$139
Bolton Medical Inc
$126
Bard Peripheral Vascular, Inc.
$34
Novartis Pharmaceuticals Corporation
$34
AXOGEN
$31
AngioDynamics, Inc.
$23
E.R. Squibb & Sons, L.L.C.
$22
Sirtex Medical Inc
$20
Medline Industries LP
$17
Top 3 companies account for 77.1% of 2024 payments
All-time payments by company (2018-2024) ›
ASAHI INTECC USA, INC.
$15,192
Philips Electronics North America Corporation
$632
Koya Medical, Inc.
$608
Endologix LLC
$376
CORDIS US CORP.
$375
Medtronic, Inc.
$336
ASAHI INTECC CO., LTD.
$330
Bard Peripheral Vascular, Inc.
$280
Ra Medical Systems, Inc.
$230
Endologix, Inc.
$204
Smith+Nephew, Inc.
$177
AngioDynamics, Inc.
$174
Bolton Medical Inc
$170
Tactile Systems Technology Inc
$147
Osiris Therapeutics Inc.
$141
Boston Scientific Corporation
$139
Janssen Pharmaceuticals, Inc
$126
Medtronic Vascular, Inc.
$126
Cardiovascular Systems Inc.
$96
LeMaitre Vascular, Inc.
$89
Veryan Medical Incorporated
$69
E.R. Squibb & Sons, L.L.C.
$66
PFIZER INC.
$61
Silk Road Medical, Inc.
$47
Resmed Corp
$37
ARALEZ PHARMACEUTICALS US INC.
$35
Novartis Pharmaceuticals Corporation
$34
Kerecis Limited
$33
AXOGEN
$31
BOSTON SCIENTIFIC CORPORATION
$30
ARGENX US, INC.
$26
AQUESTIVE THERAPEUTICS, INC.
$26
HARTMANN USA, INC.
$26
AstraZeneca Pharmaceuticals LP
$24
Abbott Laboratories
$21
Sirtex Medical Inc
$20
CARDIVA MEDICAL, INC.
$20
Reprise Biomedical, Inc.
$19
W. L. Gore & Associates, Inc.
$19
Acera Surgical, Inc.
$19
PORTOLA PHARMACEUTICALS, INC.
$19
CryoLife, Inc.
$18
Medline Industries LP
$17
CSL Behring
$17
Siemens Medical Solutions USA, Inc.
$13
Misonix Inc
$12
ACIST MEDICAL SYSTEMS, INC.
$11
Top 3 companies account for 79.3% of all-time payments
Associated products mentioned in payments ›
(6554) Periph Vasc Undiv · (7882) Image Guided Therapy Und · (8334) IGT D Peripheral · ACUSON Sequoia Diagnostic Ultrasound System · AIR 11 · ASAHI PTCA Guide Wire · AURYON LASER SYSTEM 100-120 VAC · AVVIGO Guidance System · AlphaVac · Alto Abdominal Stent Graft System · Armada 35 percutaneous catheter · Auryon Laser System 100-120 Vac · Avance Nerve Graft · BEVYXXA · BioGlue · BioMimics · CHAMELEON · CROSSER · CVI SYSTEMS · CoActive Plus · DABRA · Dayspring · Diamondback Peripheral · ELIQUIS · ENDURANT IIS · ENROUTE Transcarotid Neuroprotection System · Ellipsys · FLEXITOUCH · Flexitouch Plus · GENERAL PAIN MANAGEMENT · GRAFIX/GRAFIXPL/STRAVIX · Grafix PL PRIME · Grafts · Hizentra · IGT D Peripheral · IGT Und · IGT_D Peripheral · Kerecis Omega3 SurgiClose · MIRO3D · Ovation · PICO · Peripheral Orbital Atherectomy System · RESTOREFLO · Restrata Wound Matrix · RotarexS 6 F x 135 cm · SIR-Spheres Microspheres · SYMPAZAN · SilverHawk · SonicOne · TREO ABDOMINAL STENT-GRAFT SYSTEM · Tellus · VIABAHN Endoprosthesis with PROPATEN Bioactive Surface · VYVGART · Vascular Closure Device · Velloute · XARELTO · XENOSURE BIOLOGIC PATCH · XOLAIR · ZONTIVITY
Should you be concerned? Payments from pharmaceutical and device companies are legal and common — 57% of U.S. physicians receive at least one. They often reflect legitimate consulting, research, or education. What matters is whether a recommended drug or device appears in your doctor's payment records. If so, consider asking your doctor about it. How to interpret this data →
Most payments (85%) are for meals and travel — low-value interactions that are common across virtually all practicing physicians.
Geographic Context
Vascular surgery physicians within 10 mi
113
Per 100K population
1.1
County median income
$87,760
Nearest hospital
RONALD REAGAN UCLA MEDICAL CENTER
0.6 mi
0.6 mi
Data Sources
| Provider Registry | ✓ NPPES | Weekly updates |
| Medicare Enrollment | ✓ PECOS | Monthly updates |
| Practice Data | ✓ Medicare Util. | Annual (CY lag) |
| Industry Payments | ✓ Open Payments | CY 2024 |
| Disciplinary History | — Not public | N/A |
This provider has data in 4 of 4 available federal datasets, with a Data Coverage level of Very High. This reflects how much public data is available about a provider. How we calculate this →
Summary
Dr. Ahn is a clinical cardiology specialist, with above-average Medicare volume (top 19% in CA), with low-engagement industry engagement in the top 16% of CA peers, with 19 years of NPI registration.
This summary is auto-generated from federal data, describing data availability and patterns. Read our methodology →
Frequently Asked Questions
Is Dr. Ahn experienced with additional blood vessel ultrasound evaluation?
Based on Medicare claims data, Dr. Ahn performed 225 additional blood vessel ultrasound evaluation services. Research suggests that higher procedure volume is often associated with better outcomes, particularly for complex procedures. Note that Medicare data only captures patients aged 65 and older, so the total practice volume across all patients is likely higher.
Does Dr. Ahn receive payments from pharmaceutical companies?
Yes. Dr. Ahn received a total of $20,716 from 47 companies across 129 individual payments. These payments are legal, publicly disclosed under the federal Sunshine Act, and common among physicians — 57% of all U.S. physicians receive at least one industry payment. Patients may wish to ask their doctor about these relationships, especially if a recommended drug or device appears in the payment records.
How do Dr. Ahn's costs compare to other vascular surgery physicians in Los Angeles?
Dr. Ahn's average Medicare payment per service is $238. Note that these figures represent what Medicare pays, not your out-of-pocket cost, which depends on your specific insurance plan and deductible. Procedure-level data above shows both what was submitted and what Medicare paid for each service type.
What does Data Coverage mean?
Data Coverage (currently Very High for Dr. Ahn) measures how much public federal data is available about a provider. It is not a quality rating. A "Very High" or "High" level means the provider has data across multiple federal sources (NPPES, PECOS, Medicare Utilization, Open Payments), indicating a long track record of practice, Medicare participation, and industry disclosure. A "Low" or "Moderate" level may simply mean the provider is newer, does not see Medicare patients, or has not received any industry payments — none of which are inherently negative. Read our full methodology →
Is this data up to date?
Each data source has its own update cycle. Provider registry data (NPPES) is updated weekly. Medicare enrollment (PECOS) is updated monthly. Medicare practice data has a ~2 year lag — the most recent available is typically 2 years prior. Industry payment data (Open Payments) is published annually, usually in June, covering the prior calendar year. We display the data date prominently on each section so you always know how current it is. See our data freshness policy →
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About this page
All data on this page is sourced verbatim from public federal records published by the U.S. Centers for Medicare & Medicaid Services (CMS): NPPES ↗, Open Payments ↗, Medicare Provider Utilization ↗, and PECOS. Publication is mandated by the Physician Payments Sunshine Act (§6002 ACA, 42 U.S.C. §1320a-7h) and the Freedom of Information Act.
This page is not medical advice, an endorsement, a recommendation, or a quality rating. Data Coverage reflects data completeness — how much federal information exists for this provider — not clinical performance, patient outcomes, or quality of care. Always verify information directly with the provider and consult a licensed clinician before making medical decisions.
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