Medicare Enrolled
Dr. Peter Chang Sing, M.D.
Clinical Cardiac Electrophysiology Physician · Santa Rosa, CA
Practice pattern: Electrophysiology & Remote
— Practice combining electrophysiology and remote 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. Chang Sing 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. Chang Sing
Dr. Peter Chang Sing is a clinical cardiac electrophysiology physician in Santa Rosa, CA, with 19 years of NPI registration. Based on federal Medicare data, Dr. Chang Sing performed 4,075 Medicare services across 3,054 unique beneficiaries.
Between the years covered by Open Payments, Dr. Chang Sing received a total of $45,866 from 24 pharmaceutical and/or device companies across 313 individual payments. These payments are legal, publicly disclosed under the federal Sunshine Act, and common in clinical cardiac electrophysiology 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. Chang Sing 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 25% volume in CA
$45,866 industry payments
Medicare Practice Summary
Medicare Utilization ↗4,075
Medicare services
Top 25% in CA for clinical cardiac electrophysiology physician
3,054
Unique beneficiaries
$121
Avg. Medicare payment
Medicare patients only (65+ / disabled) · How to read this →
~214 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. |
1,004 | $99 | $342 |
| 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. |
774 | $12 | $39 |
| External EKG monitoring, 8-15 days Continuous external electrocardiogram recording and review over a period of 8 to 15 days to monitor heart rhythm. |
187 | $21 | $70 |
| 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. |
183 | $124 | $436 |
| 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. |
175 | $23 | $79 |
| 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. |
152 | $750 | $2,871 |
| 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. |
145 | $11 | $41 |
| New patient office visit, complex (60-74 min) | 124 | $181 | $590 |
| 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. |
121 | $71 | $862 |
| Heart chamber tissue destruction via catheter A procedure that destroys tissue in the upper heart chamber using a tube to treat abnormal heart rhythm. |
118 | $245 | $798 |
| Pacemaker programming, dual lead system Adjustment and configuration of a dual-lead pacemaker device to ensure proper operation and settings. |
91 | $28 | $275 |
| Pacemaker/ICD evaluation at implant or replacement Assessment of a single or dual chamber pacing cardioverter-defibrillator and generator during the initial implantation or replacement procedure. |
86 | $133 | $1,797 |
| 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. |
79 | $152 | $480 |
| Echocardiogram, transthoracic An ultrasound of the heart that uses color to show blood flow, rate, direction, and valve function. |
64 | $53 | $395 |
| 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. |
51 | $413 | $1,357 |
| 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. |
51 | $20 | $69 |
| 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. |
50 | $72 | $302 |
| 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. |
44 | $26 | $98 |
| 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. |
44 | $10 | $145 |
| 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. |
41 | $18 | $69 |
| 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. |
37 | $89 | $428 |
| Insertion of implantable defibrillator system A surgical procedure to place an implantable cardioverter-defibrillator (ICD) device into the body. The device is connected to the heart to monitor heart rhythm and deliver shocks if dangerous arrhythmias occur. |
33 | $743 | $2,398 |
| Evaluation of implantable heart and blood vessel monitoring system This procedure involves checking the function and data of an implanted device used to monitor heart and blood vessel activity. |
33 | $14 | $157 |
| Removal and replacement of multiple lead defibrillator This procedure involves removing existing defibrillator leads and replacing them with new ones. It is performed to update or repair the electrical connections of a cardiac rhythm management device. |
31 | $330 | $1,065 |
| 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. |
31 | $652 | $2,140 |
| Insertion of left lower heart electrode for pacemaker or defibrillator A procedure to place an electrode in the lower part of the left side of the heart. This electrode is used to connect a pacemaker or defibrillator to help regulate the heart's rhythm. |
29 | $369 | $1,203 |
| 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. |
28 | $614 | $2,020 |
| Removal and replacement of dual lead permanent pacemaker This procedure involves removing an existing permanent pacemaker with two leads and replacing it with a new device. It is performed to update or repair the heart rhythm management system. |
27 | $262 | $935 |
| Follow-up heart ultrasound An ultrasound of the heart performed to monitor or reassess a previously identified condition or treatment progress. |
27 | $20 | $320 |
| Pacemaker programming, single lead Adjustment and testing of a single-lead pacemaker to ensure it functions correctly. |
22 | $26 | $194 |
| 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. |
22 | $43 | $280 |
| Routine 12-lead electrocardiogram (ECG) A test that records the electrical activity of the heart using at least 12 leads to produce a tracing. |
21 | $6 | $29 |
| 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. |
21 | $144 | $514 |
| Remote pacemaker/defibrillator monitoring, 90 days Remote evaluation of a pacemaker or implantable defibrillator system within 90 days of the last check. |
20 | $14 | $68 |
| Heart conduction tissue destruction A procedure that destroys heart conduction tissue to create a heart block. |
19 | $454 | $1,517 |
| 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. |
18 | $48 | $245 |
| Implantable defibrillator system check A check of the implanted defibrillator device to ensure it is functioning correctly. This evaluation covers single, dual, or multiple lead systems. |
17 | $47 | $208 |
| 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. |
16 | $43 | $154 |
| Catheter ablation for abnormal heart rhythm A procedure where catheters are inserted to destroy tissue causing irregular heartbeats. |
14 | $245 | $799 |
| Removal and replacement of dual lead defibrillator | 13 | $306 | $1,023 |
| Permanent leadless pacemaker insertion A small, self-contained pacemaker is placed directly into the heart without using wires. The procedure is guided by imaging to ensure correct positioning. |
12 | $308 | $1,261 |
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.
30.0% high complexity
0.7% medium
69.3% routine
Industry Payment Transparency
Open Payments through 2024 ↗$45,866
Total received (2018-2024)
Avg $6,552/year across 7 years
Top 28% in CA for clinical cardiac electrophysiology physician
A higher payment rank reflects disclosed industry relationships (consulting, research, speaking) common among subspecialists — not wrongdoing.
24
Companies
313
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
$26,090 (56.9%)
Consulting
Expert advisory fees, typically reflecting recognized clinical expertise
$12,532 (27.3%)
Speaking / Promotional
Speaker programs, honoraria, and industry-sponsored educational events
$7,243 (15.8%)
Payment trend by year
Annual totals from pharmaceutical and medical device companies.
2024
$2,708
2023
$10,188
2022
$3,556
2021
$2,862
2020
$4,128
2019
$6,837
2018
$15,586
Payments by company (2024)
Consulting
Speaking
Meals & Travel
Research
Medtronic, Inc.
$1,993
Boston Scientific Corporation
$372
Boehringer Ingelheim Pharmaceuticals, Inc.
$77
ZOLL Services LLC (A/K/A ZOLL LifeCor Corp)
$73
Biosense Webster, Inc.
$66
Merck Sharp & Dohme LLC
$29
E.R. Squibb & Sons, L.L.C.
$26
Abbott Laboratories
$25
Kestra Medical Technology Services, Inc.
$24
iRhythm Technologies, Inc.
$23
Top 3 companies account for 90.2% of 2024 payments
All-time payments by company (2018-2024) ›
Medtronic Vascular, Inc.
$22,648
Medtronic, Inc.
$13,874
Boston Scientific Corporation
$4,295
Abbott Laboratories
$973
SANOFI-AVENTIS U.S. LLC
$711
Biosense Webster, Inc.
$636
Merck Sharp & Dohme LLC
$413
BIOTRONIK INC.
$409
E.R. Squibb & Sons, L.L.C.
$329
Boehringer Ingelheim Pharmaceuticals, Inc.
$328
ZOLL Services LLC (A/K/A ZOLL LifeCor Corp)
$252
Edwards Lifesciences Corporation
$164
Janssen Pharmaceuticals, Inc
$159
AngioDynamics, Inc.
$142
ABIOMED
$135
PFIZER INC.
$125
AstraZeneca Pharmaceuticals LP
$59
Bardy Diagnostics, Inc.
$50
Novartis Pharmaceuticals Corporation
$44
Kestra Medical Technology Services, Inc.
$40
Alnylam Pharmaceuticals Inc.
$27
iRhythm Technologies, Inc.
$23
Amgen Inc.
$17
Merck Sharp & Dohme Corporation
$13
Top 3 companies account for 89.0% of all-time payments
Associated products mentioned in payments ›
2ND GEN CENTRIMAG PRIMARY CONSOLE · AMPLATZER PICCOLO · AMVUTTRA · AQUAMANTYS(TM) · ATTAIN COMMAND + SUREVALVE · AZURE XT DR MRI SURESCAN · Arctic Front · Assure WCD · Azure · CAMZYOS · CARDIOMEMS · CARTO 3 · CHANTIX · COBALT DR MRI SURESCAN · CardioMEMS HF System · Carnation Ambulatory Monitor · Carto 3 · Carto 3 System · Claria MRI · CoreValve Evolut · ELIQUIS · ENSITE PRECISION · ENTRESTO · Ensite Cardiac Mapping System · Evera · FARXIGA · FLEXCATH ADVANCE · HeartMate 3 Left Ventricular Dev · Irrigated Ablation Catheters · JARDIANCE · LINQ II · Legacy · LifeVest · MICRA · MULTAQ · Micra · Mitra Clip system · MitraClip System · PERCLOSE PROSTYLE · PRADAXA · PRALUENT · PULSESELECT · Perclose ProGlide suture mediated closure system · REVEAL LINQ · Repatha · Resolute · Reveal LINQ · SelectSecure · TactiCath Quartz CFA Catheter · VERQUVO · VYNDAQEL · Visitag · WATCHMAN · WATCHMAN Access System · WATCHMAN FLX · XARELTO · ZIO XT Patch
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 (57%) are for meals and travel — low-value interactions that are common across virtually all practicing physicians.
Geographic Context
Clinical cardiac electrophysiology physicians within 10 mi
2
Per 100K population
0.4
County median income
$102,840
Nearest hospital
PROVIDENCE SANTA ROSA MEMORIAL HOSPITAL
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. Chang Sing is an electrophysiology & remote specialist, with above-average Medicare volume (top 25% in CA), with low-engagement industry engagement, 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. Chang Sing experienced with office visit, established patient (30-39 min)?
Based on Medicare claims data, Dr. Chang Sing performed 1,004 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. Chang Sing receive payments from pharmaceutical companies?
Yes. Dr. Chang Sing received a total of $45,866 from 24 companies across 313 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. Chang Sing's costs compare to other clinical cardiac electrophysiology physicians in Santa Rosa?
Dr. Chang Sing's average Medicare payment per service is $121. 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. Chang Sing) 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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