Medicare Enrolled
Dr. Hennessey Tseng, M.D.
Cardiovascular Disease · Walnut Creek, CA
Practice pattern: Remote & Electrophysiology
— Practice combining remote and electrophysiology services
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. Tseng 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. Tseng
Dr. Hennessey Tseng is a cardiovascular disease specialist in Walnut Creek, CA, with 20 years of NPI registration. Based on federal Medicare data, Dr. Tseng performed 4,880 Medicare services across 3,152 unique beneficiaries.
Between the years covered by Open Payments, Dr. Tseng received a total of $17,449 from 54 pharmaceutical and/or device companies across 886 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. Tseng 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.
✓ 20 years in practice
▲ Top 20% volume in CA
$17,449 industry payments
Medicare Practice Summary
Medicare Utilization ↗4,880
Medicare services
Top 20% in CA for cardiovascular disease
3,152
Unique beneficiaries
$72
Avg. Medicare payment
Medicare patients only (65+ / disabled) · How to read this →
~244 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. |
808 | $111 | $305 |
| 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. |
698 | $7 | $26 |
| 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. |
469 | $64 | $138 |
| 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. |
402 | $13 | $106 |
| 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. |
395 | $21 | $83 |
| 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. |
328 | $153 | $406 |
| Remote pacemaker/defibrillator monitoring, 90 days Remote evaluation of a pacemaker or implantable defibrillator system within 90 days of the last check. |
192 | $23 | $140 |
| 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. |
186 | $105 | $347 |
| Echocardiogram, transthoracic An ultrasound of the heart that uses color to show blood flow, rate, direction, and valve function. |
173 | $195 | $919 |
| 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. |
149 | $26 | $138 |
| Hospital follow-up visit, moderate complexity Follow-up hospital visit for an existing patient involving moderate medical decision making. The visit requires at least 35 minutes of time spent on the date of service. |
149 | $69 | $222 |
| 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. |
135 | $149 | $461 |
| Pacemaker programming, dual lead system Adjustment and configuration of a dual-lead pacemaker device to ensure proper operation and settings. |
114 | $82 | $204 |
| 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. |
73 | $154 | $585 |
| Stress echocardiogram with ECG monitoring An ultrasound of the heart performed while monitoring heart rhythm during rest, exercise, or medication-induced stress, followed by a review and report of the findings. |
70 | $215 | $897 |
| External EKG monitoring, 8-15 days Continuous external electrocardiogram recording and review over a period of 8 to 15 days to monitor heart rhythm. |
62 | $23 | $163 |
| Pacemaker system evaluation Assessment of a pacemaker device, including single, dual, multiple lead, or leadless systems. |
57 | $58 | $170 |
| 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. |
50 | $18 | $70 |
| 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. |
50 | $12 | $61 |
| 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. |
42 | $30 | $247 |
| Initial hospital admission, moderate complexity Initial hospital inpatient or observation care for a new patient involving moderate-level medical decision making, with at least 55 minutes total time on the date of the encounter. |
40 | $109 | $412 |
| New patient office visit, complex (60-74 min) | 36 | $200 | $569 |
| Exercise or drug-induced heart stress test with ECG A heart stress test performed using exercise or medication while monitoring the electrocardiogram under physician supervision and review. |
30 | $59 | $440 |
| 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. |
29 | $11 | $175 |
| 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. |
26 | $457 | $2,648 |
| Follow-up heart ultrasound An ultrasound of the heart performed to monitor or reassess a previously identified condition or treatment progress. |
26 | $23 | $79 |
| Continuous EKG monitoring review, 48-7 days Review and interpretation of continuous external EKG recordings lasting more than 48 hours up to 7 days. |
21 | $20 | $162 |
| Transesophageal echocardiogram An ultrasound of the heart performed using a probe inserted into the esophagus to obtain detailed images of heart structures and function. |
16 | $96 | $292 |
| Echocardiogram, transthoracic An ultrasound test that uses sound waves to create images of the heart's blood flow, valves, and chambers. |
15 | $16 | $56 |
| Echocardiogram with color Doppler An ultrasound of the heart that uses color imaging to visualize blood flow, measure flow rate, and assess valve function. |
15 | $3 | $14 |
| Continuous external EKG monitoring, 8-15 days This procedure involves recording heart rhythm continuously using an external EKG device over a period of 8 to 15 days. |
13 | $13 | $280 |
| 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. |
11 | $98 | $308 |
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.
15.7% high complexity
5.3% medium
79.0% routine
Industry Payment Transparency
Open Payments through 2024 ↗$17,449
Total received (2018-2024)
Avg $2,493/year across 7 years
Top 19% in CA for cardiovascular disease
A higher payment rank reflects disclosed industry relationships (consulting, research, speaking) common among subspecialists — not wrongdoing.
54
Companies
886
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
$17,326 (99.3%)
Speaking / Promotional
Speaker programs, honoraria, and industry-sponsored educational events
$124 (0.7%)
Payment trend by year
Annual totals from pharmaceutical and medical device companies.
2024
$2,303
2023
$3,368
2022
$3,566
2021
$1,722
2020
$1,559
2019
$2,704
2018
$2,227
Payments by company (2024)
Consulting
Speaking
Meals & Travel
Research
BIOTRONIK INC.
$193
Abbott Laboratories
$173
Novartis Pharmaceuticals Corporation
$170
AstraZeneca Pharmaceuticals LP
$160
ATRICURE, INC.
$151
ZOLL Services LLC (A/K/A ZOLL LifeCor Corp)
$137
Amgen Inc.
$126
E.R. Squibb & Sons, L.L.C.
$126
Janssen Pharmaceuticals, Inc
$119
Lexicon Pharmaceuticals, Inc.
$105
Merck Sharp & Dohme LLC
$103
Boehringer Ingelheim Pharmaceuticals, Inc.
$99
Alnylam Pharmaceuticals Inc.
$72
Bayer Healthcare Pharmaceuticals Inc.
$69
Kiniksa Pharmaceuticals International, plc
$64
Esperion Therapeutics, Inc.
$60
Edwards Lifesciences Corporation
$50
ABIOMED
$47
Inspire Medical Systems, Inc.
$44
HEARTFLOW, INC.
$43
Novo Nordisk Inc
$42
Boston Scientific Corporation
$32
PFIZER INC.
$31
Regeneron Healthcare Solutions, Inc.
$22
Actelion Pharmaceuticals US, Inc.
$22
Biogen, Inc.
$16
Kestra Medical Technology Services, Inc.
$14
SANOFI-AVENTIS U.S. LLC
$14
Top 3 companies account for 23.3% of 2024 payments
All-time payments by company (2018-2024) ›
BIOTRONIK INC.
$3,065
Amgen Inc.
$1,469
ZOLL Services LLC (A/K/A ZOLL LifeCor Corp)
$1,074
Janssen Pharmaceuticals, Inc
$1,049
Impulse Dynamics (USA) Inc.
$1,039
Novartis Pharmaceuticals Corporation
$848
Abbott Laboratories
$839
AstraZeneca Pharmaceuticals LP
$753
E.R. Squibb & Sons, L.L.C.
$751
Boehringer Ingelheim Pharmaceuticals, Inc.
$722
Amarin Pharma Inc.
$700
SANOFI-AVENTIS U.S. LLC
$660
Merck Sharp & Dohme LLC
$584
PFIZER INC.
$475
Novo Nordisk Inc
$351
ATRICURE, INC.
$264
Actelion Pharmaceuticals US, Inc.
$238
Regeneron Healthcare Solutions, Inc.
$193
Boston Scientific Corporation
$184
Bayer HealthCare Pharmaceuticals Inc.
$166
Bayer Healthcare Pharmaceuticals Inc.
$156
Gilead Sciences, Inc.
$145
Lundbeck LLC
$125
Esperion Therapeutics, Inc.
$120
Akcea Therapeutics, Inc.
$117
Lexicon Pharmaceuticals, Inc.
$105
Alnylam Pharmaceuticals Inc.
$99
Kiniksa Pharmaceuticals, Ltd.
$95
AtriCure, Inc.
$92
HeartFlow, Inc.
$83
Daiichi Sankyo Inc.
$78
Edwards Lifesciences Corporation
$70
Kiniksa Pharmaceuticals International, plc
$64
Lilly USA, LLC
$62
ABIOMED
$47
Biohaven Pharmaceutical Holding Company Ltd.
$46
Medtronic, Inc.
$46
Inspire Medical Systems, Inc.
$44
HEARTFLOW, INC.
$43
Medtronic Vascular, Inc.
$42
PORTOLA PHARMACEUTICALS, INC.
$38
GlaxoSmithKline, LLC.
$34
Braemar Manufacturing, LLC
$34
Merck Sharp & Dohme Corporation
$34
Allergan Inc.
$31
Kestra Medical Technology Services, Inc.
$30
Aziyo Biologics, Inc.
$28
iRhythm Technologies, Inc.
$24
MicroVention, Inc.
$19
BOSTON SCIENTIFIC CORPORATION
$17
Biogen, Inc.
$16
Avion Pharmaceuticals
$15
ARBOR PHARMACEUTICALS, INC.
$14
Circassia Pharmaceuticals Inc
$12
Top 3 companies account for 32.1% of all-time payments
Associated products mentioned in payments ›
AMPLATZER AMULET · AMVUTTRA · ANDEXXA · ASSURITY · ATRICLIP LAA EXCLUSION SYSTEM · ATRICURE ATRICLIP LAA EXCLUSION · AVEIR · AVIVO · Acticor · Acticor 7 VR-T DX · Aimovig · Arcalyst · Assure WCD · Assurity Pacemaker · BALLOON CATHETER · BELSOMRA · BIOMONITOR · BRILINTA · BYSTOLIC · BioMonitor · CAMZYOS · CARDIOMEMS · CHANTIX · CRM-Research only · Cardiac Monitoring Suite · CardioMEMS HF System · CareLink · Circulatory Support · Corlanor · ECM Patch · EDWARDS SAPIEN 3 TRANSCATHETER HEART VALVE (THV) · ELIQUIS · EMGALITY · ENTRESTO · EPI-SENSE GUIDED COAGULATION SYSTEM WITH VISITRAX · EVKEEZA · Edarbi · Edora · Edora 8 DR-T · FARXIGA · FFRct · GALLANT · HeartWare HVAD · INJECTAFER · INSPIRE · Impella · Infinity DBS Pulse Generators · JARDIANCE · Kerendia · LEQVIO · LUX DX · LUX-Dx Insertable Cardiac Monitor · LifeVest · MICRA · MULTAQ · NEXLETOL · NEXPLANON · NORTHERA · NURTEC ODT · OPSUMIT · OPTIMIZER · Optimizer · Orsiro Mission · Ozempic · PRADAXA · PRALUENT · PRALUENT ALIROCUMAB INJECTION · Pouch · Prenate Mini · Prolia · RESONATE · Renamic Neo · Repatha · Rivacor · Rivacor 7 DR-T · Rybelsus · SHINGRIX · SKYCLARYS · STIOLTO RESPIMAT · Solia · TEGSEDI · TUDORZA PRESSAIR · UPTRAVI · VERQUVO · VYNDAQEL · Vascepa · WAINUA · WATCHMAN · Wegovy · XARELTO · ZIO Patch · Zero Gravity
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 (99%) are for meals and travel — low-value interactions that are common across virtually all practicing physicians.
Geographic Context
Cardiologists within 10 mi
171
Per 100K population
14.7
County median income
$125,727
Nearest hospital
KAISER FOUNDATION HOSPITAL - WALNUT CREEK
2.8 mi
2.8 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. Tseng is a remote & electrophysiology specialist, with above-average Medicare volume (top 20% in CA), with low-engagement industry engagement in the top 19% of CA peers, with 20 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. Tseng experienced with office visit, established patient (30-39 min)?
Based on Medicare claims data, Dr. Tseng performed 808 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. Tseng receive payments from pharmaceutical companies?
Yes. Dr. Tseng received a total of $17,449 from 54 companies across 886 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. Tseng's costs compare to other cardiologists in Walnut Creek?
Dr. Tseng's average Medicare payment per service is $72. 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. Tseng) 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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