Medicare Enrolled
Dr. Konstantinos Vlachonassios, M.D.
Cardiovascular Disease · Lakewood, 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. Vlachonassios 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. Vlachonassios
Dr. Konstantinos Vlachonassios is a cardiovascular disease specialist in Lakewood, CA, with 19 years of NPI registration. Based on federal Medicare data, Dr. Vlachonassios performed 1,508 Medicare services across 713 unique beneficiaries.
Between the years covered by Open Payments, Dr. Vlachonassios received a total of $53,447 from 60 pharmaceutical and/or device companies across 1290 individual payments. These payments are legal, publicly disclosed under the federal Sunshine Act, and common in cardiovascular disease. 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. Vlachonassios 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
▲ 1,508 Medicare services
$53,447 industry payments
Medicare Practice Summary
Medicare Utilization ↗1,508
Medicare services
Bottom 43% in CA for cardiovascular disease
713
Unique beneficiaries
$97
Avg. Medicare payment
Medicare patients only (65+ / disabled) · How to read this →
~79 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 |
|---|---|---|---|
| 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. |
504 | $98 | $157 |
| Hospital follow-up visit, high complexity Subsequent hospital inpatient or observation care for an existing patient involving high-level medical decision making, with at least 50 minutes total time on the date of the encounter. |
504 | $100 | $217 |
| 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. |
108 | $66 | $107 |
| Initial hospital admission, high complexity Initial hospital inpatient or observation care for a new patient involving high-level medical decision making, with at least 75 minutes total time on the date of the encounter. |
104 | $140 | $250 |
| Echocardiogram, transthoracic An ultrasound of the heart that uses color to show blood flow, rate, direction, and valve function. |
57 | $149 | $569 |
| Office visit, established patient, complex (40-54 min) An office or outpatient visit for an existing patient lasting between 40 and 54 minutes. This level of service is determined by the total time spent on the date of the encounter. |
45 | $147 | $252 |
| Electrocardiogram (EKG), 12-lead A standard heart rhythm test using at least 12 leads to record electrical activity. A healthcare provider interprets the results and provides a written report. |
44 | $11 | $46 |
| EKG interpretation and report A standard electrocardiogram test that records the heart's electrical activity using at least 12 leads. The service includes a professional interpretation of the results and a written report. |
38 | $7 | $35 |
| Pacemaker system evaluation Assessment of a pacemaker device, including single, dual, multiple lead, or leadless systems. |
34 | $44 | $93 |
| New patient office visit, complex (60-74 min) | 28 | $182 | $353 |
| Exercise or drug-induced heart stress test with ECG A heart stress test performed using exercise or medication while an electrocardiogram is monitored under physician supervision. |
14 | $18 | $220 |
| Exercise or drug-induced heart stress test with ECG A heart stress test performed using exercise or medication while monitoring the electrocardiogram, with physician review of the results. |
14 | $12 | $50 |
| Cardiac catheterization | 14 | $177 | $2,504 |
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.
7.0% high complexity
1.9% medium
91.2% routine
Industry Payment Transparency
Open Payments through 2024 ↗$53,447
Total received (2018-2024)
Avg $7,635/year across 7 years
Top 9% in CA for cardiovascular disease
A higher payment rank reflects disclosed industry relationships (consulting, research, speaking) common among subspecialists — not wrongdoing.
60
Companies
1,290
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
$32,794 (61.4%)
Speaking / Promotional
Speaker programs, honoraria, and industry-sponsored educational events
$20,653 (38.6%)
Payment trend by year
Annual totals from pharmaceutical and medical device companies.
2024
$3,196
2023
$3,277
2022
$3,239
2021
$4,999
2020
$8,563
2019
$17,201
2018
$12,973
Payments by company (2024)
Consulting
Speaking
Meals & Travel
Research
Edwards Lifesciences Corporation
$568
Merck Sharp & Dohme LLC
$231
ZOLL Services LLC (A/K/A ZOLL LifeCor Corp)
$211
Novartis Pharmaceuticals Corporation
$205
ABIOMED
$200
ShockWave Medical, Inc
$144
BIOTRONIK INC.
$133
Boehringer Ingelheim Pharmaceuticals, Inc.
$132
Lexicon Pharmaceuticals, Inc.
$129
Amgen Inc.
$129
Janssen Pharmaceuticals, Inc
$125
PFIZER INC.
$109
AstraZeneca Pharmaceuticals LP
$108
Novo Nordisk Inc
$103
Bayer Healthcare Pharmaceuticals Inc.
$103
SCPHARMACEUTICALS INC.
$76
Kiniksa Pharmaceuticals International, plc
$61
Alnylam Pharmaceuticals Inc.
$58
Esperion Therapeutics, Inc.
$54
Medtronic, Inc.
$53
Actelion Pharmaceuticals US, Inc.
$53
Janssen Biotech, Inc.
$39
CVRx, Inc.
$36
Janssen Scientific Affairs, LLC
$33
E.R. Squibb & Sons, L.L.C.
$30
Kestra Medical Technology Services, Inc.
$27
LANTHEUS MEDICAL IMAGING, INC.
$27
Celgene Corporation
$19
Top 3 companies account for 31.6% of 2024 payments
All-time payments by company (2018-2024) ›
Amgen Inc.
$16,996
Medtronic Vascular, Inc.
$6,136
AstraZeneca Pharmaceuticals LP
$4,250
ABIOMED
$2,389
BIOTRONIK INC.
$2,310
Abbott Laboratories
$2,048
Janssen Pharmaceuticals, Inc
$1,804
Novartis Pharmaceuticals Corporation
$1,645
Amarin Pharma Inc.
$1,606
ZOLL Services LLC (A/K/A ZOLL LifeCor Corp)
$1,514
Gilead Sciences, Inc.
$1,045
Boehringer Ingelheim Pharmaceuticals, Inc.
$1,012
Kowa Pharmaceuticals America, Inc.
$987
Penumbra, Inc.
$898
Bayer HealthCare Pharmaceuticals Inc.
$860
Edwards Lifesciences Corporation
$771
PFIZER INC.
$646
Merck Sharp & Dohme LLC
$545
SANOFI-AVENTIS U.S. LLC
$465
Boston Scientific Corporation
$392
Salix Pharmaceuticals, a division of Bausch Health US, LLC
$383
Actelion Pharmaceuticals US, Inc.
$358
E.R. Squibb & Sons, L.L.C.
$338
Novo Nordisk Inc
$290
Lundbeck LLC
$278
Medtronic, Inc.
$248
Bayer Healthcare Pharmaceuticals Inc.
$233
Kestra Medical Technology Services, Inc.
$233
Lilly USA, LLC
$228
Lexicon Pharmaceuticals, Inc.
$203
Cardiovascular Systems Inc.
$201
Esperion Therapeutics, Inc.
$174
Alnylam Pharmaceuticals Inc.
$162
ARBOR PHARMACEUTICALS, INC.
$154
Merck Sharp & Dohme Corporation
$151
ShockWave Medical, Inc
$144
Allergan Inc.
$137
United Therapeutics Corporation
$129
SCPHARMACEUTICALS INC.
$124
GlaxoSmithKline, LLC.
$117
Philips Electronics North America Corporation
$115
Relypsa, Inc.
$101
W. L. Gore & Associates, Inc.
$87
Kiniksa Pharmaceuticals International, plc
$61
Janssen Scientific Affairs, LLC
$58
Lantheus Medical Imaging, Inc.
$51
Noden Pharma USA Inc
$45
Cook Medical LLC
$44
Janssen Biotech, Inc.
$39
CVRx, Inc.
$36
Teleflex LLC
$32
LANTHEUS MEDICAL IMAGING, INC.
$27
Aegerion Pharmaceuticals, Inc.
$22
Ethicon US, LLC
$21
Vanda Pharmaceuticals Inc.
$20
Itamar Medical Inc
$19
CMP Pharma, Inc.
$19
Celgene Corporation
$19
Vifor Pharma, Inc.
$16
Arbor Pharmaceuticals, Inc.
$12
Top 3 companies account for 51.2% of all-time payments
Associated products mentioned in payments ›
(5091) Amb Mon & Diag Und · AMVIA EDGE · AMVUTTRA · AREXVY · Acticor · Arcalyst · Assure WCD · BASAGLAR · BIOMONITOR · BRILINTA · BYSTOLIC · BYVALSON · Barostim Neo System · BioMonitor · CAMZYOS · CARDIOFORM Septal Occluder · CHANTIX · Carospir · Catheter - Turnpike · Cook Medical Catheters · Cook Medical Flexor Ansel · Corlanor · Coronary Orbital Atherectomy System · DEFINITY · Diamondback Coronary · Diamondback Peripheral · DxTerity · EDWARDS SAPIEN 3 TRANSCATHETER HEART VALVE (THV) · ELIQUIS · ENTRESTO · Edarbi · Edora · Edora 8 DR-T · Edwards SAPIEN 3 Ultra Transcatheter Heart Valve · FARXIGA · FUROSCIX · GENERAL VASCULAR INTERVENTION · GENERAL VASCULAR INTERVENTION · GORE CARDIOFORM Septal Occluder · Hetlioz · IGT Devices Und · INNOVA · Impella · Indigo · Inpefa · Interventional Products · JANUVIA · JARDIANCE · JUXTAPID · Kerendia · LEQVIO · LINQ II · LIVALO · Letairis · LifeVest · Livalo · MOUNJARO · MULTAQ · Micra · Mitra Clip system · NEXLETOL · NORTHERA · ONPATTRO · ONYX FRONTIER · OPSUMIT · OPSUMIT MACITENTAN · ORENITRAM · Optis Coronary Imaging System · Orsiro · Orsiro Mission · Ozempic · PK Papyrus · PRADAXA · Peripheral Orbital Atherectomy System · Pulsar · Repatha · Resolute · Reveal LINQ · Rivacor · Rivacor 7 DR-T · SURGICEL Family of Absorbable Hemostats · Shockwave IVL System with the Shockwave C2 Coronary IVL Catheter · TEKTURNA · TRELEGY ELLIPTA · TRULANCE · TRULICITY · UPTRAVI · VERQUVO · VYNDAQEL · Vascepa · Veltassa · Verquvo · WATCHMAN Access System · WINREVAIR · WatchPATONE · XARELTO · XIFAXAN · Xience Sierra Coronary Stent · Xience Sierra Coronary Stent System · Xience V coronary stent system
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 (61%) are for meals and travel — low-value interactions that are common across virtually all practicing physicians. Total industry engagement is in the top 9% for cardiovascular disease in CA.
Geographic Context
Cardiologists within 10 mi
658
Per 100K population
6.7
County median income
$87,760
Nearest hospital
UCI HEALTH-LAKEWOOD
2.2 mi
2.2 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. Vlachonassios is a clinical cardiology specialist, with moderate Medicare volume, with low-engagement industry engagement in the top 9% 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. Vlachonassios experienced with office visit, established patient (30-39 min)?
Based on Medicare claims data, Dr. Vlachonassios performed 504 office visit, established patient (30-39 min) 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. Vlachonassios receive payments from pharmaceutical companies?
Yes. Dr. Vlachonassios received a total of $53,447 from 60 companies across 1,290 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. Vlachonassios's costs compare to other cardiologists in Lakewood?
Dr. Vlachonassios's average Medicare payment per service is $97. 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. Vlachonassios) 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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