Medicare Enrolled
Dr. Alexander Chang, M.D.
Student in an Organized Health Care Education/Training Program · Escondido, CA
Practice pattern: Clinical Cardiology
— Primarily office-based clinical cardiology
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. Chang 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
Dr. Alexander Chang is a student in an organized health care education/training program specialist in Escondido, CA, with 15 years of NPI registration. Based on federal Medicare data, Dr. Chang performed 1,816 Medicare services across 1,290 unique beneficiaries.
Between the years covered by Open Payments, Dr. Chang received a total of $141,963 from 70 pharmaceutical and/or device companies across 447 individual payments. These payments are legal, publicly disclosed under the federal Sunshine Act, and common in student in an organized health care education/training program. 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. Chang 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 11% volume in CA
$141,963 industry payments
Medicare Practice Summary
Medicare Utilization ↗1,816
Medicare services
Top 11% in CA for student in an organized health care education/training program
1,290
Unique beneficiaries
$165
Avg. Medicare payment
Medicare patients only (65+ / disabled) · How to read this →
~121 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. |
425 | $107 | $247 |
| 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. |
207 | $164 | $445 |
| 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. |
183 | $76 | $168 |
| Ultrasound of arm or leg veins An ultrasound exam of the veins in one arm or leg using compression and other maneuvers to assess blood flow and check for blockages. |
144 | $108 | $282 |
| Ultrasound of arm and leg arteries This procedure uses sound waves to create images of the blood vessels in the arms and legs. It allows healthcare providers to examine the structure and blood flow within these arteries. |
119 | $56 | $193 |
| 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. |
114 | $144 | $373 |
| 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. |
110 | $213 | $509 |
| 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. |
93 | $141 | $397 |
| Chemical injection for multiple incompetent leg veins A procedure involving the injection of a chemical agent into several non-functioning veins in the leg. |
68 | $192 | $457 |
| Complete ultrasound of brain blood flow An ultrasound test that evaluates blood flow within the brain's blood vessels. It uses sound waves to create images of the vessels and assess circulation. |
62 | $247 | $638 |
| 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. |
61 | $141 | $309 |
| Radiofrequency vein destruction, first vein A procedure to treat the first incompetent vein in the arm or leg using radiofrequency energy and imaging guidance. |
50 | $975 | $4,600 |
| Spine fusion with cage or mesh device insertion A surgical procedure to fuse spine bones by inserting a cage or mesh device into the disc space. |
29 | $33 | $587 |
| Anterior lumbar interbody fusion with partial disc removal A surgical procedure to fuse the lower spine bones by accessing the area through the abdomen and partially removing a spinal disc. |
22 | $766 | $2,854 |
| Fusion of spine in lower back | 22 | $197 | $2,947 |
| Spinal stabilization device placement, 2-3 segments Surgical placement of a device to stabilize the front of two to three spinal segments. |
22 | $92 | $1,340 |
| Aortic tube insertion A procedure to place a tube into the aorta, the main artery carrying blood from the heart to the rest of the body. |
21 | $537 | $1,434 |
| Radiologist review of arm or leg artery image A radiologist reviews images of the arteries in the arm or leg. This process involves analyzing the visual data to assess the blood vessels. |
21 | $130 | $384 |
| 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. |
16 | $237 | $550 |
| New patient office visit, complex (60-74 min) | 15 | $186 | $427 |
| Placement of stabilizing device to back of 1 spine bone in neck A procedure involving the placement of a stabilizing device on the back of a single vertebra in the neck. |
12 | $96 | $1,399 |
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.
10.3% high complexity
45.1% medium
44.6% routine
Industry Payment Transparency
Open Payments through 2024 ↗$141,963
Total received (2018-2024)
Avg $20,280/year across 7 years
Top 0% in CA for student in an organized health care education/training program
A higher payment rank reflects disclosed industry relationships (consulting, research, speaking) common among subspecialists — not wrongdoing.
70
Companies
447
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
$79,219 (55.8%)
Speaking / Promotional
Speaker programs, honoraria, and industry-sponsored educational events
$37,403 (26.3%)
Other
Charitable contributions, space rental, and other categories
$18,018 (12.7%)
Meals & Travel
Food, beverages, travel, and lodging — typically low-value
$7,324 (5.2%)
Payment trend by year
Annual totals from pharmaceutical and medical device companies.
2024
$21,409
2023
$9,362
2022
$17,162
2021
$26,520
2020
$16,862
2019
$33,455
2018
$17,194
Payments by company (2024)
Consulting
Speaking
Meals & Travel
Research
Globus Medical, Inc.
$8,763
Orthofix Medical, Inc.
$6,043
AngioDynamics, Inc.
$6,000
Medtronic, Inc.
$146
INTUITIVE SURGICAL, INC.
$127
Janssen Pharmaceuticals, Inc
$59
Boston Scientific Corporation
$53
CARDIVA MEDICAL, INC.
$48
Davol Inc.
$32
Ethicon US, LLC
$28
Elevate Surgical CO
$24
MIMEDX Group, Inc.
$21
LifeNet Health
$21
Inari Medical, Inc.
$20
Imperative Care, Inc
$19
Merit Medical Systems Inc
$6
Top 3 companies account for 97.2% of 2024 payments
All-time payments by company (2018-2024) ›
NuVasive, Inc.
$71,775
Globus Medical, Inc.
$31,048
AngioDynamics, Inc.
$18,319
SEASPINE ORTHOPEDICS CORPORATION
$8,621
Orthofix Medical, Inc.
$6,043
Endologix, Inc.
$894
Janssen Pharmaceuticals, Inc
$817
Musculoskeletal Transplant Foundation Inc.
$618
E.R. Squibb & Sons, L.L.C.
$308
Philips Electronics North America Corporation
$225
Ethicon US, LLC
$210
Medtronic, Inc.
$200
Integra LifeSciences Corporation
$186
Endologix, LLC
$186
Allergan Inc.
$162
Stryker Corporation
$148
INTUITIVE SURGICAL, INC.
$127
Boston Scientific Corporation
$122
Medtronic Vascular, Inc.
$121
Endologix LLC
$103
Cardiovascular Systems Inc.
$91
PORTOLA PHARMACEUTICALS, INC.
$84
LeMaitre Vascular, Inc.
$81
PFIZER INC.
$78
AbbVie Inc.
$76
Cardinal Health 200, LLC
$76
Tactile Systems Technology Inc
$59
Penumbra, Inc.
$58
Innovation Technologies Inc
$53
Misonix Inc
$52
ORGANOGENESIS INC.
$50
CARDIVA MEDICAL, INC.
$48
Smith+Nephew, Inc.
$45
Kerecis Limited
$43
Biocompatibles, Inc.
$42
Resmed Corp
$40
Silk Road Medical, Inc.
$39
Avinger Inc.
$38
EKOS Corporation
$38
Nevro Corp.
$36
Cook Medical LLC
$35
CORDIS US CORP.
$34
Davol Inc.
$32
Baxter Healthcare
$31
Covidien LP
$30
Organogenesis Inc.
$29
CSL Behring
$26
Elevate Surgical CO
$24
Bard Peripheral Vascular, Inc.
$22
MIMEDX Group, Inc.
$21
LifeNet Health
$21
Inari Medical, Inc.
$20
Merit Medical Systems Inc
$20
Maquet Cardiovascular U.S. Sales, L.L.C.
$20
Bolton Medical Inc
$20
Imperative Care, Inc
$19
BARD PERIPHERAL VASCULAR, INC.
$18
ABBVIE INC.
$18
TEI Medical Inc.
$17
Cardinal Health 200 LLC
$17
Amniox Medical, Inc.
$16
Aroa Biosurgery Incorporated
$16
BOSTON SCIENTIFIC CORPORATION
$14
Allergan, Inc.
$14
Bioventus LLC
$14
Acera Surgical, Inc.
$14
Smith & Nephew, Inc.
$13
Terumo Medical Corporation
$12
Advanced Oxygen Therapy Inc.
$11
MEDELA LLC
$6
Top 3 companies account for 85.3% of all-time payments
Associated products mentioned in payments ›
(6536) Phoenix · (9281) Turbo Elite · 3D Printed Integrated ALIF Spa · 3D Printed PLIF/TLIF · ACP · AERIAL · AFFIRM · AFX · AFX2 Bifurcated Endograft System · AIR 11 · ALIF · ALIF Instruments (Universal) · ANDEXXA · ARTEGRAFT VASCULAR GRAFT · AURYON LASER SYSTEM 100-120 VAC · AVYCAZ · Admiral · Affix · Apligraf · Archon · Auryon Laser System 100-120 Vac · BILAYER WOUND MATRIX BWM · Brigade · CALIBER · CARDIVA VASCADE MVP VVCS 6-12F · CATHETER · COALITION · COALITION AGX / AGX RP · COALITION MIS · COALITION MIS / MIS Ti · CONDUCT · CONDUCT Matrix · CORBEL · CREO · CREO 5.5 · CREO ADDITION · CREO MIS · CREO S2AI · Caliber L · Clarivein · Colosseum · Concerto · Cook Celect · Cook Medical Introducers · Corbel · DALVANCE · DERMABOND PRINEO · Da Vinci Surgical System · Diamondback Peripheral · EKOSONIC · ELIQUIS · ELSA · ENDORE · ENDURANT IIS · ENROUTE Transcarotid Neuroprotection System · EVERPOINT · Echelon Flex · Endurant · Excelsius - GPS · Excelsius Robotics System · Excelsius3D Imaging System · ExcelsiusGPS Robotic Navigation System · FLEXITOUCH · FLOSEAL · FLOWTRIEVER CATHETER · FUSION BIOLINE · Flexitouch Plus · FormaGraft · GENERAL THERAPIES · IGT D Peripheral · IGT_D Peripheral · IGT_D Therapy · INDEPENDENCE MIS · Independence MIS · Indigo · Integra · Irrisept · Kcentra · Kerecis Omega3 SurgiClose · LUTONIX · Lattus · MARS 3V/3VL · MARS 3VL Retractor · Magnify-S / Magnify · Mariner · Mars Aux · Meridian · Meridian Reef A · MetaCross · NEOX · OMNIGRAFT · Omnia · Osteocel · Ovation · PANTHERIS · POWERFLEX Pro PTA Catheter · PRECISE PRO RX Carotid Stent System · PRESERVE - ALIF · PRIMATRIX · PRODIGY CATHETER · PROLENE · Penumbra Ruby Coil · Peripheral Orbital Atherectomy System · Prelude Introducers · Pulse · Puraply · RELINE · RESTOREFLO · RISE · RISE-L . RISE-L A/L · Ranger · Relay Plus · Restrata Wound Matrix · S · S.M.A.R.T. CONTROL Self-Expanding Nitinol Stent · S.M.A.R.T. Flex Stent · SABER · SABLE · SURGICEL NU-KNIT · Santyl · Senza · SonicOne · SonicOne Clinic · Surecross Support Catheters · Surgicel Powder · TEFLARO · TRITANIUM · TheraGenesis Wound Matrix · Topical oxygen chamber for extremities · VARITHENA · VENOVO · VIP · VISTASEAL · Valiant Captivia · Venclose Maven Catheter · WAVEFORM C · XARELTO · XLIF · iGA
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 (56%) are consulting fees, which typically reflect recognized clinical expertise sought by manufacturers. Total industry engagement is in the top 0% for student in an organized health care education/training program in CA.
Geographic Context
Student in an organized health care education/training programs within 10 mi
3,013
Per 100K population
91.8
County median income
$102,285
Nearest hospital
KAISER FOUNDATION HOSPITAL - SAN MARCOS
3.9 mi
3.9 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 is a clinical cardiology specialist, with above-average Medicare volume (top 11% in CA), with consulting-driven industry engagement in the top 0% 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. Chang experienced with office visit, established patient (30-39 min)?
Based on Medicare claims data, Dr. Chang performed 425 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 receive payments from pharmaceutical companies?
Yes. Dr. Chang received a total of $141,963 from 70 companies across 447 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's costs compare to other student in an organized health care education/training programs in Escondido?
Dr. Chang's average Medicare payment per service is $165. 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) 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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