Medicare Enrolled
Dr. Nikhil Warrier, M.D.
Clinical Cardiac Electrophysiology Physician · Fountain Valley, CA
Practice pattern: Remote & Electrophysiology
— Practice combining remote and electrophysiology services
Consulting-driven
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. Warrier 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 →
Are you Dr. Warrier?
Request a correction or review of any data shown here. Provider portal →
What this data tells you about Dr. Warrier
Dr. Nikhil Warrier is a clinical cardiac electrophysiology physician in Fountain Valley, CA, with 15 years of NPI registration. Based on federal Medicare data, Dr. Warrier performed 5,397 Medicare services across 2,863 unique beneficiaries.
Between the years covered by Open Payments, Dr. Warrier received a total of $135,682 from 41 pharmaceutical and/or device companies across 726 individual payments. These payments are legal, publicly disclosed under the federal Sunshine Act, and common in clinical cardiac electrophysiology physician. The majority of payments are for consulting, which typically reflects recognized clinical expertise sought by manufacturers. Patients may wish to discuss these relationships with their provider.
The Data Coverage level for Dr. Warrier 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.
✓ 15 years in practice
▲ Top 15% volume in CA
$135,682 industry payments
Medicare Practice Summary
Medicare Utilization ↗5,397
Medicare services
Top 15% in CA for clinical cardiac electrophysiology physician
2,863
Unique beneficiaries
$70
Avg. Medicare payment
Medicare patients only (65+ / disabled) · How to read this →
~360 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. |
781 | $105 | $158 |
| Remote pacemaker monitoring, 90 days Remote assessment of a pacemaker system, including single, dual, multiple lead, or leadless devices, performed up to 90 days apart. |
693 | $23 | $60 |
| 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. |
612 | $12 | $50 |
| 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. |
590 | $70 | $112 |
| Remote cardiac rhythm monitor evaluation, up to 30 days Review and analysis of data from a remote cardiac rhythm monitoring system over a period of up to 30 days. |
517 | $21 | $50 |
| Remote monitoring of implantable heart device, up to 30 days Remote evaluation of an implanted heart or blood vessel monitoring system over a period of up to 30 days. |
489 | $21 | $65 |
| Pacemaker programming, dual lead system Adjustment and configuration of a dual-lead pacemaker device to ensure proper operation and settings. |
237 | $66 | $120 |
| 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. |
202 | $100 | $250 |
| Remote evaluation of implantable defibrillator system Remote assessment of a single, dual, or multiple lead implantable defibrillator system within 90 days of the previous evaluation. |
192 | $29 | $100 |
| 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. |
189 | $7 | $13 |
| 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. |
133 | $143 | $275 |
| Remote monitoring of implantable heart rhythm device Evaluation of data transmitted remotely from an implantable cardiovascular monitor, such as a loop recorder or subcutaneous cardiac rhythm monitor, over a period up to 30 days. |
98 | $55 | $99 |
| Remote pacemaker/defibrillator monitoring, 90 days Remote evaluation of a pacemaker or implantable defibrillator system within 90 days of the last check. |
82 | $19 | $60 |
| 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. |
68 | $129 | $203 |
| Programming of multiple lead implantable defibrillator system Adjustment and testing of the settings for an implanted heart device with multiple leads to ensure proper function. |
64 | $83 | $201 |
| Programming of dual lead implantable defibrillator system Adjustment and testing of the settings for an implanted heart device with two leads to ensure proper function. |
50 | $83 | $180 |
| New patient office visit (30-44 min) An initial office visit for a new patient lasting between 30 and 44 minutes. This code is used when the total time spent on the date of the encounter falls within this range. |
43 | $84 | $225 |
| Pacemaker programming, single lead Adjustment and testing of a single-lead pacemaker to ensure it functions correctly. |
42 | $61 | $110 |
| Pacemaker insertion with heart chamber electrodes A surgical procedure to implant a pacemaker device and place electrodes into the upper and lower chambers of the heart to regulate heart rhythm. |
33 | $425 | $1,600 |
| Pacemaker system programming Adjustment and testing of a multi-lead pacemaker to ensure proper function and settings. |
31 | $70 | $145 |
| Cardiac rhythm monitor evaluation Review and analysis of data recorded by a cardiac rhythm monitoring device to assess heart activity. |
23 | $44 | $85 |
| External shock to heart to regulate heart beat A procedure that delivers an electric shock to the heart from outside the body to restore a normal heart rhythm. |
22 | $93 | $600 |
| Continuous ECG monitoring, up to 30 days Continuous heart rhythm monitoring for up to 30 days, including professional review and reporting of the results. |
22 | $22 | $90 |
| Continuous EKG monitoring review, 48-7 days Review and interpretation of continuous external EKG recordings lasting more than 48 hours up to 7 days. |
22 | $20 | $65 |
| Programming of single lead implantable defibrillator system Adjustment and testing of the settings for a single-lead implantable cardioverter-defibrillator (ICD) to ensure proper function. |
22 | $62 | $140 |
| 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. |
21 | $10 | $20 |
| Repair of left upper heart chamber with implant A surgical procedure to repair the left upper chamber of the heart using an implanted device, with review by a radiologist. |
19 | $520 | $1,700 |
| 30-day continuous ECG with patient-triggered event transmission and review This procedure involves continuous electrocardiogram monitoring for up to 30 days, including the transmission of patient-triggered events. A healthcare professional reviews the data and provides a report. |
19 | $788 | $1,842 |
| Atrial fibrillation ablation with pulmonary vein isolation A procedure to treat atrial fibrillation by mapping the heart's electrical activity and destroying tissue causing irregular contractions. This is done by isolating the pulmonary veins using catheter-based destruction. |
19 | $790 | $2,500 |
| Continuous external EKG monitoring, 48 hours to 7 days This procedure involves recording the heart's electrical activity continuously using an external device for a period exceeding 48 hours but not more than 7 days. |
18 | $10 | $70 |
| 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. |
17 | $42 | $95 |
| Echocardiogram, transthoracic An ultrasound of the heart that uses color to show blood flow, rate, direction, and valve function. |
15 | $150 | $700 |
| Insertion of implantable heart rhythm monitor A small device is placed under the skin to continuously record the heart's electrical activity. This helps detect irregular heart rhythms that may not appear during a standard office visit. |
12 | $4,183 | $8,345 |
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.
27.4% high complexity
0.0% medium
72.6% routine
Industry Payment Transparency
Open Payments through 2024 ↗$135,682
Total received (2018-2024)
Avg $19,383/year across 7 years
Top 9% in CA for clinical cardiac electrophysiology physician
A higher payment rank reflects disclosed industry relationships (consulting, research, speaking) common among subspecialists — not wrongdoing.
41
Companies
726
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.
Consulting
Expert advisory fees, typically reflecting recognized clinical expertise
$68,570 (50.5%)
Speaking / Promotional
Speaker programs, honoraria, and industry-sponsored educational events
$39,393 (29.0%)
Meals & Travel
Food, beverages, travel, and lodging — typically low-value
$25,078 (18.5%)
Scientific / Research
Research funding and grants
$2,640 (1.9%)
Payment trend by year
Annual totals from pharmaceutical and medical device companies.
2024
$44,241
2023
$28,356
2022
$14,128
2021
$15,752
2020
$19,776
2019
$5,143
2018
$8,285
Payments by company (2024)
Consulting
Speaking
Meals & Travel
Research
Medical Device Business Services, Inc.
$32,700
Biosense Webster, Inc.
$6,345
ZOLL Services LLC (A/K/A ZOLL LifeCor Corp)
$1,933
Medtronic, Inc.
$593
Boston Scientific Corporation
$457
Abbott Laboratories
$335
ATRICURE, INC.
$256
ShockWave Medical, Inc
$239
Inari Medical, Inc.
$231
BIOTRONIK INC.
$176
Boehringer Ingelheim Pharmaceuticals, Inc.
$139
CARDIVA MEDICAL, INC.
$132
Novartis Pharmaceuticals Corporation
$99
Kestra Medical Technology Services, Inc.
$97
Amgen Inc.
$81
AstraZeneca Pharmaceuticals LP
$67
PFIZER INC.
$55
ABIOMED
$54
Novo Nordisk Inc
$50
Alnylam Pharmaceuticals Inc.
$46
Kiniksa Pharmaceuticals International, plc
$44
Merck Sharp & Dohme LLC
$33
Janssen Pharmaceuticals, Inc
$31
SANOFI-AVENTIS U.S. LLC
$28
iRhythm Technologies, Inc.
$18
Top 3 companies account for 92.6% of 2024 payments
All-time payments by company (2018-2024) ›
Medical Device Business Services, Inc.
$55,379
ZOLL Services LLC (A/K/A ZOLL LifeCor Corp)
$25,893
SANOFI-AVENTIS U.S. LLC
$17,010
Biosense Webster, Inc.
$11,768
Boston Scientific Corporation
$5,482
Medtronic Vascular, Inc.
$5,167
Abbott Laboratories
$4,735
Medtronic, Inc.
$2,810
Inari Medical, Inc.
$1,289
ATRICURE, INC.
$891
PFIZER INC.
$679
Novartis Pharmaceuticals Corporation
$620
BIOTRONIK INC.
$577
Janssen Pharmaceuticals, Inc
$298
CARDIVA MEDICAL, INC.
$274
ShockWave Medical, Inc
$239
Kestra Medical Technology Services, Inc.
$230
Boehringer Ingelheim Pharmaceuticals, Inc.
$221
AtriCure, Inc.
$210
Acutus Medical, Inc.
$209
BOSTON SCIENTIFIC CORPORATION
$205
Impulse Dynamics (USA) Inc.
$165
E.R. Squibb & Sons, L.L.C.
$153
Alnylam Pharmaceuticals Inc.
$132
AstraZeneca Pharmaceuticals LP
$124
ABIOMED
$112
Janssen Scientific Affairs, LLC
$111
Amgen Inc.
$108
Regeneron Healthcare Solutions, Inc.
$90
Kiniksa Pharmaceuticals, Ltd.
$83
Philips Electronics North America Corporation
$58
Bardy Diagnostics, Inc.
$56
W. L. Gore & Associates, Inc.
$53
Novo Nordisk Inc
$50
Edwards Lifesciences Corporation
$46
Kiniksa Pharmaceuticals International, plc
$44
Merck Sharp & Dohme LLC
$33
Amarin Pharma Inc.
$32
iRhythm Technologies, Inc.
$18
Medtronic USA, Inc.
$15
Amryt Pharma Holdings Ltd
$12
Top 3 companies account for 72.4% of all-time payments
Associated products mentioned in payments ›
(6557) Mechanical Tools · (9124) LM Undivided · ACCOLADE · ACUITY · AMPLATZER AMULET · AMVIA EDGE · AMVUTTRA · ATRICLIP LAA EXCLUSION SYSTEM · AURORA EV-ICD MRI SURESCAN · AVEIR · AZURE XT DR MRI SURESCAN · Accent Pacemaker · Acticor 7 VR-T DX · Allure CRT Pacemaker · Allure Quadra RF CRT Pacemaker · Ampere RF Ablation Generator · Arcalyst · Arctic Front · Assure WCD · Assurity Pacemaker · Azure · BIOMONITOR · BioMonitor · BodyGuardian · CAMZYOS · CAPSUREFIX NOVUS MRI SURESCAN · CARDIVA VASCADE 6/7F VCS · CARDIVA VASCADE MVP VVCS 6-12F · CARTO 3 · CHANTIX · COBALT DR MRI SURESCAN · CONFIRM RX · CRT Leads · CT THROMBECTOMY SYSTEM KIT · CardioInsight · CareLink · Carnation Ambulatory Monitor · Carto 3 · Carto 3 System · CartoSound · Claria MRI · Confirm Rx · DISEASE STATE · DiamondTemp · ELIQUIS · EMBLEM · EMBLEM MRI S-ICD · ENSITE PRECISION · ENTRESTO · EPI-SENSE GUIDED COAGULATION SYSTEM WITH VISITRAX · EVKEEZA · Edora · Ellipse ICD · Evera · FARXIGA · FLOWTRIEVER CATHETER · Fortify Assura · GENERAL TACHY · GENERAL TACHY · GENERAL - TACHY · GENERAL - THERAPIES · GENERAL EP · GORE CARDIOFORM Septal Occluder · General - Therapies · INVOKANA · Impella · JARDIANCE · JOT DX · JUXTAPID · LEQVIO · LINQ II · LUX DX · LUX-DX · LUX-Dx Insertable Cardiac Monitor · LifeVest · MICRA · MITRACLIP · MODELS · MULTAQ · Micra · OCTARAY MAPPING CATHETER · ONYX FRONTIER · OPTIMIZER · Orsiro · Ozempic · PRALUENT · PULSESELECT · Pacemakers · Pentaray Nav · Percepta · PlasmaBlade · QDOT MICRO Catheter · RHYTHMIA · Repatha · Resolute · Reveal LINQ · RhythmVIEW Work Stations · Rhythmia Mapping System · Rivacor · S · S-ICD System Magnet · SAPIEN 3 Ultra RESILIA · SAVVYWIRE · SELECTSECURE · SENSOR ENABLED · SQRX PULSE GENERATOR · SYNERGY ABLATION SYSTEM · Selectra · Shockwave IVL System with the Shockwave C2 Coronary IVL Catheter · SmartAblateTM System RF Generator · Soundstar · Sprint Quattro · TACTICATH ABLATION CATHETER · TYRX · TactiCath Quartz CFA Catheter · VERQUVO · VIGILANT · VYNDAQEL · Vascepa · WAINUA · WATCHMAN · WATCHMAN Access System · WATCHMAN FLX · XARELTO · Zio monitor · myLUX Patient Kit with mobile device
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 →
The majority of payments (50%) are consulting fees, which typically reflect recognized clinical expertise sought by manufacturers. Total industry engagement is in the top 9% for clinical cardiac electrophysiology physician in CA.
Geographic Context
Clinical cardiac electrophysiology physicians within 10 mi
22
Per 100K population
0.7
County median income
$113,702
Nearest hospital
UCI HEALTH - FOUNTAIN VALLEY
0.0 mi
0.0 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. Warrier is a remote & electrophysiology specialist, with above-average Medicare volume (top 15% in CA), with consulting-driven industry engagement in the top 9% of CA peers, with 15 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. Warrier experienced with office visit, established patient (30-39 min)?
Based on Medicare claims data, Dr. Warrier performed 781 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. Warrier receive payments from pharmaceutical companies?
Yes. Dr. Warrier received a total of $135,682 from 41 companies across 726 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. Warrier's costs compare to other clinical cardiac electrophysiology physicians in Fountain Valley?
Dr. Warrier's average Medicare payment per service is $70. 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. Warrier) 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 →
Explore related providers
Same specialty & city
Clinical Cardiac Electrophysiology Physicians in Fountain Valley
Browse clinical cardiac electrophysiology physicians in Fountain Valley ranked by procedure volume and transparency data.
Highest volume
Top Clinical Cardiac Electrophysiology Physicians in CA
Clinical cardiac electrophysiology physicians ranked by total Medicare services performed statewide.
Industry payments
Pharma Payments to Clinical Cardiac Electrophysiology Physicians in CA
Which CA clinical cardiac electrophysiology physicians receive the most from drug and device companies.
By company
Medical Device Business Services, Inc. Payments to Doctors
See all physicians who received payments from Medical Device Business Services, Inc.
By company
ZOLL Services LLC (A/K/A ZOLL LifeCor Corp) Payments to Doctors
See all physicians who received payments from ZOLL Services LLC (A/K/A ZOLL LifeCor Corp).
By company
SANOFI-AVENTIS U.S. LLC Payments to Doctors
See all physicians who received payments from SANOFI-AVENTIS U.S. LLC.
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.
Provider corrections: Provider portal · Privacy questions: Privacy Policy · Terms: Terms of Use · Methodology: Methodology