Medicare Enrolled
Dr. Mohan Viswanathan, M.D.
Internal Medicine · Stanford, CA
Practice pattern: Electrophysiology & Remote
— Practice combining electrophysiology and remote services
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. Viswanathan 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. Viswanathan
Dr. Mohan Viswanathan is an internal medicine specialist in Stanford, CA, with 19 years of NPI registration. Based on federal Medicare data, Dr. Viswanathan performed 2,163 Medicare services in 2023. These records do not provide a deduplicated patient total.
Between the years covered by Open Payments, Dr. Viswanathan received a total of $37,144 from 14 pharmaceutical and/or device companies across 116 payment records. A record can group multiple payments. These transfers are publicly reported through CMS Open Payments. Disclosure alone does not establish their effect on care. A reliable breakdown by payment category is not available in this snapshot. Patients may wish to discuss these relationships with their provider.
The Data Coverage level for Dr. Viswanathan 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 of NPI registration
▲ Top 15% volume in CA
$37,144 industry payments
Medicare Practice Summary — 2023
Medicare Utilization ↗2,163
Medicare services
Top 15% in CA for internal medicine
Not available
Unique patients (not deduplicated)
$89
Avg. Medicare payment
Medicare patients only (65+ / disabled) · How to read this →
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 |
|---|---|---|---|
| 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. |
774 | $7 | $61 |
| 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. |
220 | $137 | $549 |
| 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. |
176 | $27 | $139 |
| External EKG monitoring, 8-15 days Continuous external electrocardiogram recording and review over a period of 8 to 15 days to monitor heart rhythm. |
125 | $24 | $281 |
| New patient office visit, complex (60-74 min) | 125 | $176 | $645 |
| 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. |
104 | $34 | $275 |
| 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. |
100 | $160 | $757 |
| Pacemaker programming, dual lead system Adjustment and configuration of a dual-lead pacemaker device to ensure proper operation and settings. |
85 | $34 | $226 |
| 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. |
56 | $109 | $371 |
| Catheter ablation for abnormal heart rhythm A procedure where catheters are inserted to destroy tissue causing irregular heartbeats. |
47 | $268 | $3,337 |
| Hospital discharge management, 30+ min This service covers the care provided by a physician or qualified healthcare professional on the day a patient is discharged from the hospital. It requires more than 30 minutes of total time spent on the day of discharge. |
38 | $107 | $438 |
| 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. |
37 | $812 | $8,974 |
| 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. |
36 | $24 | $112 |
| 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. |
32 | $57 | $380 |
| Heart chamber tissue destruction via catheter A procedure that destroys tissue in the upper heart chamber using a tube to treat abnormal heart rhythm. |
30 | $268 | $3,000 |
| Moderate sedation during GI endoscopy Sedation services provided by the physician performing a gastrointestinal endoscopic procedure. This requires an independent trained observer to assist in monitoring the patient. |
30 | $5 | $252 |
| 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. |
29 | $442 | $3,066 |
| Heart rhythm stimulator programming after drug infusion Adjustment of a heart rhythm stimulation device following a drug infusion. This procedure involves reprogramming the device settings to ensure proper function after the medication has been administered. |
23 | $80 | $1,017 |
| 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. |
20 | $52 | $319 |
| Ultrasound of heart blood vessels with radiologist review An ultrasound exam that evaluates blood vessels within the heart, including a review of the results by a radiologist. |
19 | $69 | $936 |
| Radiofrequency ablation for supraventricular tachycardia A procedure to locate and destroy abnormal heart tissue in the upper chambers of the heart that causes a rapid heart rate. |
18 | $730 | $6,598 |
| Telehealth originating site facility fee A fee charged by the facility where a patient is located for telehealth services. This covers the use of the site's equipment and staff to connect with a remote provider. |
14 | $22 | $84 |
| Pacemaker system programming Adjustment and testing of a multi-lead pacemaker to ensure proper function and settings. |
13 | $39 | $301 |
| Heart rhythm ablation for ventricular tachycardia A procedure to locate and destroy abnormal heart tissue in the lower chambers that causes rapid or irregular heartbeats. This is done using a catheter during an electrophysiologic evaluation. |
12 | $866 | $8,894 |
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. These counts do not measure clinical quality or years of experience.
28.9% high complexity
2.3% medium
68.8% routine
Industry Payment Transparency
Open Payments through 2024 ↗$37,144
Total received (2018-2024)
Avg $5,306/year across 7 years
Top 4% in CA for internal medicine
A higher payment rank reflects disclosed industry relationships (consulting, research, speaking) common among subspecialists — not wrongdoing.
14
Companies
116
Payment records
Payments are publicly reported; disclosure does not establish legality · Not evidence of wrongdoing · How to interpret →
Payment categories are unavailable while the source breakdown is being rebuilt. Company and year totals do not identify how much belongs to each category.
Payment trend by year
Annual totals from pharmaceutical and medical device companies.
2024
$3,857
2023
$496
2022
$499
2021
$473
2020
$243
2019
$15,473
2018
$16,103
Payments by company (2024)
Abbott Laboratories
$2,083
Boston Scientific Corporation
$1,489
Medtronic, Inc.
$149
Biosense Webster, Inc.
$136
Top 3 companies account for 96.5% of 2024 payments
All-time payments by company (2018-2024) ›
Philips Electronics North America Corporation
$9,459
Abbott Laboratories
$9,159
iRhythm Technologies, Inc.
$4,057
CARDIVA MEDICAL, INC.
$3,875
Boston Scientific Corporation
$3,460
BIOTRONIK INC.
$2,500
Biosense Webster, Inc.
$2,347
Medical Device Business Services, Inc.
$772
Medtronic Vascular, Inc.
$691
ZOLL Medical Corporation
$409
GENZYME CORPORATION
$160
Medtronic, Inc.
$149
Siemens Medical Solutions USA, Inc.
$56
Bard Peripheral Vascular, Inc.
$50
Top 3 companies account for 61.0% of all-time payments
Associated products mentioned in payments ›
AMPLATZER Occluders · ASSURITY · AVEIR · Ablation Therapy Hardware · Advisor Catheter · Allure Quadra RF CRT Pacemaker · BD Introsyte · CARDIVA VASCADE MVP VVCS 6-12F · CARTO 3 · CRT Leads · Carto 3 · Carto 3 System · CartoSound · ENSITE PRECISION · EnSite Velocity System Mapping D · Ensite Cardiac Mapping System · FIRMap Catheters · GENERAL EP · GENERAL TACHY · GENERAL THERAPIES · IGT Systems Und · JOT DX · MICRA · MULTAQ · Micra · NA · PULSESELECT · Quadra Assura CRT Defibrillator · RHYTHMIA · RhythmVIEW Work Stations · SENSOR ENABLED · SelectSecure · Siello · TACTICATH ABLATION CATHETER · Vascular Closure Device · Visia AF · WATCHMAN · ZIO Patch
Should you be concerned? Industry payments are disclosed through CMS Open Payments. Disclosure alone does not establish their purpose, legality, or effect on care. 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 →
Geographic Context
Internal medicine physicians in nearby ZIP areas
2,637
County median income
$159,674
Nearest hospital to ZIP centroid (approximate)
STANFORD HEALTH CARE
0.0 mi
0.0 mi
Data Sources
| Provider Registry | ✓ NPPES | NPPES snapshot; verify current record |
| Medicare Enrollment | ✓ PECOS | PECOS snapshot |
| Practice Data | ✓ Medicare Util. | Annual (CY lag) |
| Industry Payments | ✓ Open Payments | CY 2024 |
| Disciplinary History | — Not included | 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. Viswanathan is an electrophysiology & remote specialist, with above-average Medicare volume (top 15% in CA), 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. Viswanathan experienced with ekg interpretation and report?
Based on Medicare claims data, Dr. Viswanathan performed 774 ekg interpretation and report services. These records cover Medicare fee-for-service activity, including eligible younger beneficiaries; they do not measure total practice volume or clinical quality.
Does Dr. Viswanathan receive payments from pharmaceutical companies?
Yes. Dr. Viswanathan received a total of $37,144 from 14 companies across 116 payment records. A record can group multiple payments. These transfers are publicly disclosed through CMS Open Payments. Disclosure alone does not establish their legality or effect on care. 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. Viswanathan's costs compare to other internal medicine physicians in Stanford?
Dr. Viswanathan's average Medicare payment per service is $89. 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. Viswanathan) 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 the presence of registry, enrollment, activity or payment records, not verified experience or clinical quality. 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?
Source publication dates and the snapshots loaded on this site can differ. Rebuilding a page does not refresh its source records. Check the Medicare reporting year and the payment interval shown above; consult the linked official sources for newer releases and current registry details. See our data freshness policy →
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About this page
This page combines public CMS records with calculated summaries and explanatory procedure labels. These transformations are not verbatim federal records. Sources: 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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