Medicare Enrolled
Dr. Shun Sunder, M.D
Optician · Lancaster, CA
Practice pattern: Cardiac & Electrophysiology
— Practice combining cardiac 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. Sunder 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. Sunder
Dr. Shun Sunder is an optician specialist in Lancaster, CA, with 19 years of NPI registration. Based on federal Medicare data, Dr. Sunder performed 3,712 Medicare services across 2,628 unique beneficiaries.
Between the years covered by Open Payments, Dr. Sunder received a total of $461 from 15 pharmaceutical and/or device companies across 24 individual payments. These payments are legal, publicly disclosed under the federal Sunshine Act, and common in optician. 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. Sunder 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 23% volume in CA
$461 industry payments
Medicare Practice Summary
Medicare Utilization ↗3,712
Medicare services
Top 23% in CA for optician
2,628
Unique beneficiaries
$86
Avg. Medicare payment
Medicare patients only (65+ / disabled) · How to read this →
~195 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 (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. |
485 | $71 | $150 |
| 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. |
459 | $12 | $75 |
| Regadenoson injection (Lexiscan) for heart stress test An injection of regadenoson, a medication used to stress the heart during diagnostic testing. |
456 | $42 | $100 |
| Electrocardiogram, 1-3 leads with physician review A heart rhythm test using one to three electrodes to record electrical activity, with interpretation by a physician. |
432 | $10 | $25 |
| Echocardiogram, transthoracic An ultrasound of the heart that uses color to show blood flow, rate, direction, and valve function. |
383 | $152 | $795 |
| 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. |
221 | $106 | $200 |
| Telephone medical discussion, 11-20 minutes A phone conversation with a physician lasting between 11 and 20 minutes. |
216 | $77 | $150 |
| Ultrasound of head and neck blood flow, bilateral An ultrasound exam that uses sound waves to visualize and assess blood flow in the vessels of both the head and the neck. |
193 | $167 | $315 |
| 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. |
123 | $60 | $300 |
| 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. |
91 | $128 | $200 |
| Nuclear stress test of heart muscle A nuclear medicine imaging test that evaluates blood flow to the heart muscle while at rest and during stress. |
85 | $69 | $200 |
| PET scan of heart muscle blood flow A nuclear medicine imaging test that uses positron emission tomography (PET) to evaluate blood flow within the heart muscle. |
84 | $24 | $100 |
| Continuous ECG monitoring, up to 30 days Continuous heart rhythm monitoring for up to 30 days, including professional review and reporting of the results. |
68 | $21 | $200 |
| 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. |
68 | $788 | $1,600 |
| Complete ultrasound of aorta, vena cava, groin vessels or bypass grafts A complete ultrasound exam of the aorta, vena cava, groin vessels, or bypass grafts. This imaging test uses sound waves to visualize these blood vessels. |
56 | $134 | $300 |
| Ultrasound of arm or leg veins An ultrasound exam of the veins in the arm or leg. The test uses sound waves to check blood flow and may include compression and other maneuvers. |
35 | $163 | $300 |
| Nuclear stress test of heart muscle A nuclear medicine imaging test that evaluates blood flow to the heart muscle at rest and during stress using a special camera. |
33 | $401 | $950 |
| 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. |
32 | $10 | $40 |
| Continuous EKG monitoring review, 48-7 days Review and interpretation of continuous external EKG recordings lasting more than 48 hours up to 7 days. |
32 | $18 | $60 |
| Pacemaker programming, dual lead system Adjustment and configuration of a dual-lead pacemaker device to ensure proper operation and settings. |
32 | $50 | $150 |
| Ultrasound of leg arteries or grafts An imaging test that uses sound waves to create pictures of the blood vessels in the legs or any surgical grafts present. |
31 | $208 | $450 |
| Complete ultrasound of abdomen and pelvis blood flow This procedure uses sound waves to create images of blood flow in the arteries and veins of the abdomen and pelvis. It evaluates the rate and direction of blood movement within these vessels. |
30 | $238 | $500 |
| 2-day continuous ECG with review and report A two-day continuous electrocardiogram recording that includes a professional review and written report of the results. |
24 | $59 | $350 |
| 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. |
23 | $19 | $100 |
| 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. |
20 | $20 | $75 |
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.
13.2% high complexity
26.6% medium
60.2% routine
Industry Payment Transparency
Open Payments through 2024 ↗$461
Total received (2018-2024)
Avg $92/year across 5 years
Bottom 40% in CA for optician
15
Companies
24
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
$434 (94.3%)
Speaking / Promotional
Speaker programs, honoraria, and industry-sponsored educational events
$26 (5.7%)
Payment trend by year
Annual totals from pharmaceutical and medical device companies.
2024
$224
2023
$153
2022
$14
2019
$34
2018
$35
Payments by company (2024)
Consulting
Speaking
Meals & Travel
Research
ABIOMED
$92
Merck Sharp & Dohme LLC
$37
Lexicon Pharmaceuticals, Inc.
$32
AstraZeneca Pharmaceuticals LP
$19
SCPHARMACEUTICALS INC.
$18
Boehringer Ingelheim Pharmaceuticals, Inc.
$14
Kiniksa Pharmaceuticals International, plc
$13
Top 3 companies account for 71.8% of 2024 payments
All-time payments by company (2018-2024) ›
ABIOMED
$92
E.R. Squibb & Sons, L.L.C.
$52
iRhythm Technologies, Inc.
$39
Merck Sharp & Dohme LLC
$37
Medtronic Vascular, Inc.
$35
Kestra Medical Technology Services, Inc.
$34
AstraZeneca Pharmaceuticals LP
$33
Lexicon Pharmaceuticals, Inc.
$32
BIOTRONIK INC.
$22
SCPHARMACEUTICALS INC.
$18
Kiniksa Pharmaceuticals, Ltd.
$15
Boehringer Ingelheim Pharmaceuticals, Inc.
$14
Alnylam Pharmaceuticals Inc.
$14
Kiniksa Pharmaceuticals International, plc
$13
Regeneron Healthcare Solutions, Inc.
$12
Top 3 companies account for 39.7% of all-time payments
Associated products mentioned in payments ›
Arcalyst · Assure WCD · CAMZYOS · ELIQUIS · FARXIGA · FUROSCIX · IN.PACT Admiral · Impella · JARDIANCE · ONPATTRO · PRALUENT · VERQUVO · 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 (94%) are for meals and travel — low-value interactions that are common across virtually all practicing physicians.
Geographic Context
Opticians within 10 mi
45
Per 100K population
0.5
County median income
$87,760
Nearest hospital
ANTELOPE VALLEY 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. Sunder is a cardiac & electrophysiology specialist, with above-average Medicare volume (top 23% 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. Sunder experienced with office visit, established patient (20-29 min)?
Based on Medicare claims data, Dr. Sunder performed 485 office visit, established patient (20-29 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. Sunder receive payments from pharmaceutical companies?
Yes. Dr. Sunder received a total of $461 from 15 companies across 24 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. Sunder's costs compare to other opticians in Lancaster?
Dr. Sunder's average Medicare payment per service is $86. 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. Sunder) 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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