Medicare Enrolled
Dr. Eric Chang, M.D.
Pain Medicine (Physical Medicine & Rehabilitation) Physician · Orange, CA
Practice pattern: Clinical Cardiology
— Primarily office-based clinical cardiology
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 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 →
Are you Dr. Chang?
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What this data tells you about Dr. Chang
Dr. Eric Chang is a pain medicine physician in Orange, CA, with 18 years of NPI registration. Based on federal Medicare data, Dr. Chang performed 10,633 Medicare services across 1,440 unique beneficiaries.
Between the years covered by Open Payments, Dr. Chang received a total of $34,048 from 77 pharmaceutical and/or device companies across 730 individual payments. These payments are legal, publicly disclosed under the federal Sunshine Act, and common in pain medicine (physical medicine & rehabilitation) 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 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.
✓ 18 years in practice
▲ Top 7% volume in CA
$34,048 industry payments
Medicare Practice Summary
Medicare Utilization ↗10,633
Medicare services
Top 7% in CA for pain medicine (physical medicine & rehabilitation) physician
1,440
Unique beneficiaries
$33
Avg. Medicare payment
Medicare patients only (65+ / disabled) · How to read this →
~591 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 |
|---|---|---|---|
| Botox injection, per unit An injection of onabotulinumtoxinA, a medication used to temporarily relax muscles or reduce gland activity. The dose is measured in units, with this code representing a single unit administered. |
6,755 | $5 | $9 |
| 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. |
1,645 | $104 | $550 |
| Dexamethasone injection (steroid) An injection of dexamethasone sodium phosphate, a corticosteroid medication, administered in a dose of 1 milligram. |
462 | $0 | $4 |
| 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. |
162 | $77 | $390 |
| Electromyography of arm or leg muscles A test that measures the electrical activity in the muscles of the arm or leg using a needle electrode. It helps evaluate the health of muscles and the nerve cells that control them. |
128 | $88 | $438 |
| Steroid injection (triamcinolone) A 10 mg injection of triamcinolone acetonide, a corticosteroid medication. This code specifies the drug and dosage administered. |
115 | $1 | $10 |
| Injection into lower spine canal with imaging guidance A procedure where a substance is injected into the lower part of the spinal canal. The injection is performed using imaging guidance to ensure accurate placement. |
97 | $79 | $1,170 |
| Functional capacity test, per 15 minutes A test or measurement to assess functional capacity. The service is billed for each 15-minute increment. |
91 | $26 | $100 |
| Ultrasound guidance for needle placement Use of ultrasound imaging to guide the precise placement of a needle during a medical procedure. |
90 | $50 | $257 |
| Remote patient monitoring management, 20 min/month Management based on results from remote vital sign monitoring for the first 20 minutes per calendar month. |
82 | $38 | $213 |
| Spinal drug pump reprogramming and refill A physician electronically adjusts the settings of a spinal drug infusion pump and refills its medication reservoir. |
76 | $78 | $411 |
| X-ray of entire middle and lower spine, 2-3 views An X-ray imaging test that captures 2 to 3 views of the entire middle and lower spine to visualize the bones and structures in these areas. |
68 | $63 | $323 |
| Nerve conduction studies, 13 or more A diagnostic test that measures how well nerves send electrical signals. This code applies when 13 or more individual nerve studies are performed. |
65 | $252 | $1,258 |
| X-ray of lower and sacral spine, minimum 6 views An X-ray imaging test that captures at least six views of the lower back and sacral spine to evaluate bone structure and alignment. |
62 | $57 | $272 |
| Spine facet joint injection with imaging guidance, single level An injection is administered into a single facet joint of the lower or sacral spine while using imaging guidance to ensure accurate placement. |
57 | $110 | $1,153 |
| 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. |
56 | $134 | $714 |
| Facet joint injection, second level, with imaging guidance An injection into a lower or sacral spine facet joint using imaging guidance for the second level treated. |
54 | $62 | $580 |
| Injection of anesthetic or steroid into sacroiliac joint with imaging guidance This procedure involves injecting an anesthetic or steroid medication into the joint connecting the lower spine and hip bone. Imaging guidance is used to ensure accurate placement of the injection. |
42 | $87 | $943 |
| Facet joint nerve destruction, single joint A procedure to destroy nerves in a single lower or sacral spinal facet joint using imaging guidance to target pain signals. |
42 | $231 | $2,901 |
| Facet joint nerve destruction, additional joint This procedure uses imaging guidance to destroy nerves in an additional lower or sacral spinal facet joint. |
42 | $71 | $1,601 |
| Sacral spine nerve root injection with imaging guidance An injection of anesthetic and/or steroid medication into a sacral spine nerve root. The procedure uses imaging guidance to ensure accurate placement. |
39 | $109 | $1,373 |
| Trigger point injection, 3 or more muscles Injection of medication into three or more specific muscle trigger points to relieve pain. |
36 | $51 | $267 |
| Ultrasound-guided large joint aspiration or injection This procedure uses ultrasound imaging to guide the removal of fluid from or the injection of medication into a large joint. |
30 | $85 | $341 |
| MRI of lower spine, without contrast A magnetic resonance imaging scan of the lower spinal canal that does not use contrast dye to create detailed images of the spine. |
30 | $111 | $904 |
| Spine facet joint injection with imaging guidance, single level An injection is administered into a single facet joint of the upper or middle spine while using imaging guidance to ensure accurate placement. |
27 | $120 | $1,230 |
| X-ray of upper spine, 6 or more views An X-ray imaging test of the upper spine using six or more separate views to capture detailed images of the bones and structures in that area. |
27 | $53 | $287 |
| Facet joint injection, second level, with imaging An injection into a second spinal facet joint in the upper or middle spine, guided by imaging to ensure accurate placement. |
26 | $70 | $613 |
| Shoulder X-ray, 2+ views An X-ray imaging test of the shoulder joint using at least two different angles to visualize the bones and surrounding structures. |
23 | $30 | $162 |
| Fluoroscopic guidance for needle placement Use of real-time X-ray imaging to guide the precise placement of a needle during a medical procedure. |
23 | $104 | $535 |
| Additional sacral spine nerve root injection with imaging An injection of anesthetic and/or steroid medication into an additional sacral spine nerve root level, guided by imaging. |
21 | $47 | $547 |
| New patient office visit, complex (60-74 min) | 21 | $180 | $938 |
| Spinal injection with imaging guidance A procedure where medication is injected into the middle or upper part of the spinal canal. Imaging technology is used to guide the needle to the correct location. |
19 | $90 | $1,182 |
| Joint injection, major joint Removal of fluid from a large joint and/or injection of medication into the joint space. |
17 | $33 | $281 |
| Knee X-ray, 1-2 views An X-ray imaging test of the knee joint using one to two different angles to visualize the bones and surrounding structures. |
17 | $32 | $158 |
| Facet joint nerve destruction, single joint This procedure uses imaging guidance to destroy the nerves supplying a single upper or middle spinal facet joint. It is performed to interrupt pain signals from that specific joint. |
16 | $195 | $2,466 |
| Facet joint nerve destruction, additional joint This procedure uses imaging guidance to destroy nerves in an additional upper or middle spinal facet joint. |
16 | $70 | $1,470 |
| X-ray of lower leg, 2 views An X-ray imaging test of the lower leg using two different angles to visualize the bones and surrounding structures. |
16 | $29 | $146 |
| X-ray of both hips, 2 views An X-ray imaging test that captures two views of both hip joints to evaluate bone structure and alignment. |
15 | $38 | $190 |
| Hip X-ray, 2-3 views An X-ray imaging test of the hip joint using two to three different angles to visualize the bones and surrounding structures. |
12 | $43 | $216 |
| 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. |
11 | $154 | $768 |
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.
Industry Payment Transparency
Open Payments through 2024 ↗$34,048
Total received (2018-2024)
Avg $4,864/year across 7 years
Top 7% in CA for pain medicine (physical medicine & rehabilitation) physician
A higher payment rank reflects disclosed industry relationships (consulting, research, speaking) common among subspecialists — not wrongdoing.
77
Companies
730
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
$25,293 (74.3%)
Consulting
Expert advisory fees, typically reflecting recognized clinical expertise
$8,755 (25.7%)
Payment trend by year
Annual totals from pharmaceutical and medical device companies.
2024
$4,993
2023
$3,103
2022
$2,372
2021
$3,046
2020
$3,912
2019
$6,092
2018
$10,531
Payments by company (2024)
Consulting
Speaking
Meals & Travel
Research
Boston Scientific Corporation
$2,223
Medtronic, Inc.
$1,386
Saluda Medical Americas, Inc.
$194
Vertos Medical, Inc.
$187
Merz Pharmaceuticals, LLC
$160
ABBVIE INC.
$159
TerSera Therapeutics LLC
$125
Collegium Pharmaceutical, Inc.
$100
IBSA Pharma Inc.
$88
Stryker Corporation
$84
PFIZER INC.
$73
Abbott Laboratories
$54
PAINTEQ LLC
$46
SCILEX PHARMACEUTICALS INC.
$37
Curonix LLC
$23
Amgen Inc.
$22
Avanos Medical
$16
DJO, LLC
$16
Top 3 companies account for 76.2% of 2024 payments
All-time payments by company (2018-2024) ›
Biogen, Inc.
$6,498
Medtronic, Inc.
$3,601
Flowonix Medical Incorporated
$2,661
Allergan Inc.
$2,329
Boston Scientific Corporation
$2,285
Nevro Corp.
$1,954
Medtronic USA, Inc.
$1,584
Abbott Laboratories
$1,455
Relievant Medsystems, Inc.
$788
TerSera Therapeutics LLC
$709
Nuvectra Corporation
$628
Allergan, Inc.
$490
Amgen Inc.
$469
Merz Pharmaceuticals, LLC
$445
AbbVie Inc.
$404
Stimwave Technologies Incorporated
$394
PFIZER INC.
$347
Jazz Pharmaceuticals Inc.
$342
ABBVIE INC.
$335
Radius Health, Inc.
$325
IBSA Pharma Inc.
$311
Vertos Medical, Inc.
$309
Collegium Pharmaceutical, Inc.
$286
BioDelivery Sciences International, Inc.
$280
DePuy Synthes Sales Inc.
$262
SCILEX PHARMACEUTICALS INC.
$251
Saluda Medical Americas, Inc.
$248
Merz North America, Inc.
$215
TRICE MEDICAL, INC.
$192
RedHill Biopharma Inc.
$190
Stryker Corporation
$180
BOSTON SCIENTIFIC CORPORATION
$170
Daiichi Sankyo Inc.
$165
Flexion Therapeutics, Inc.
$146
Biohaven Pharmaceutical Holding Company Ltd.
$139
Forte Bio-Pharma LLC
$138
AstraZeneca Pharmaceuticals LP
$136
Novartis Pharmaceuticals Corporation
$133
Foundation Fusion Solutions, LLC
$131
Pacira Pharmaceuticals Incorporated
$128
Baudax Bio Inc.
$122
Curonix LLC
$120
Centinel Spine, LLC
$110
Scilex Pharmaceuticals Inc.
$105
Biohaven Pharmaceuticals, Inc.
$103
Nalu Medical, Inc.
$101
Electronic Waveform Lab, Inc.
$99
MERZ NORTH AMERICA, INC.
$89
FORTE BIO-PHARMA LLC
$88
Organogenesis Inc.
$85
Bioventus LLC
$75
Lilly USA, LLC
$75
Hikma Pharmaceuticals USA
$73
Trice Medical, Inc.
$60
Horizon Therapeutics plc
$59
Avanos Medical
$58
Teva Pharmaceuticals USA, Inc.
$47
ACUMED LLC
$46
PAINTEQ LLC
$46
Ipsen Biopharmaceuticals, Inc
$45
BIODELIVERY SCIENCES INTERNATIONAL, INC.
$44
SPR Therapeutics, Inc
$43
BioTissue Holdings, Inc.
$36
Zyla Life Sciences
$34
Shionogi Inc
$29
ERMI Inc.
$28
BIOTRONIK NRO, Inc.
$22
Eisai Inc.
$19
FIDIA PHARMA USA INC.
$18
Metacel Pharmaceuticals LLC
$17
DJO, LLC
$16
Heron Therapeutics, Inc.
$16
Zimmer Biomet Holdings, Inc.
$16
Almatica Pharma LLC
$15
Assertio Therapeutics, Inc.
$11
Purdue Pharma L.P.
$11
Smith+Nephew, Inc.
$11
Top 3 companies account for 37.5% of all-time payments
Associated products mentioned in payments ›
ACUMED · ADAPTIVESTIM · AIMOVIG · AJOVY · ALLODERM · ANJESO · AUTOFILL · Aimovig · Algovita · Axium INS DRG IPG · Axium Sheath Braided DRG · BELBUCA · BIOTRONIK · BOTOX · BUNAVAIL 2.1 mg 30-count box · Belbuca · CAMBIA · COMIRNATY · Cardiovascular- Research only · DYSPORT · Dayvigo · Durolane · Dysport · EMGALITY · Evoke · Evoke SCS · GENERAL PAIN MANAGEMENT · GENERAL PAIN MANAGEMENT · GENERATOR · HYALGAN · INTELLIS · INTELLIS ADAPTIVESTIM · Intracept · Iovera · KRYSTEXXA · Kloxxado · LICART · LYRICA · Licart · MILD DEVICE KIT · MONOVISC · MOVANTIK · Morphabond ER · Movantik · N'VISION · NALOCET · NAPRELAN · NEOX · NURTEC ODT · Nalu Neurostimulation System · NuCel/ Matrix · ORTHOVISC · Omnia · Ozobax · PAINTEQ · PAXLOVID · PEAK · PICO7 · PNS FREEDOM-4A PERMANENT NEUROSTIMULATOR RECEIVER KIT CHANNEL A · PRIALT · PROCARE · PROCLAIM · PRODISC C · PROLATE · Prialt · Proclaim Family of SCS IPGs · Proclaim IPG · Procure Biopsy Forceps · Prometra II · QULIPTA · RESTORE · SPECTRA WAVEWRITER · SPINEJACK · SPINRAZA · SPRINT PNS System · STANDARD RF DISPOSABLES · SYMPROIC · SYNCHROMED · SYNCHROMEDII · Segway blade or mieye camera · Senza II · Senza Spinal Cord Stimulation System · Sports Medicine-None · StimQ Receiver Stimulator Kit Channel A US w Receiver · StimQ Receiver Stimulator Kit Channel A US w/Receiver · Symproic · TRIVISC SODIUM HYALURONATE · Tirosint · Tymlos · UBRELVY · VECTRIS · Vanta · WaveWriter Alpha Prime 16 · XEOMIN · XTAMPZA · Xeomin · ZORVOLEX · ZTLido · ZTLido 30 POUCH in 1 CARTON 1 PATCH in 1 POUCH · Zilretta · Zynrelef · mild Device Kit
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 (74%) are for meals and travel — low-value interactions that are common across virtually all practicing physicians. Total industry engagement is in the top 7% for pain medicine (physical medicine & rehabilitation) physician in CA.
Geographic Context
Pain medicine physicians within 10 mi
37
Per 100K population
1.2
County median income
$113,702
Nearest hospital
PROVIDENCE ST. JOSEPH 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 is a clinical cardiology specialist, with above-average Medicare volume (top 7% in CA), with low-engagement industry engagement in the top 7% of CA peers, with 18 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 botox injection, per unit?
Based on Medicare claims data, Dr. Chang performed 6,755 botox injection, per unit 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 $34,048 from 77 companies across 730 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 pain medicine physicians in Orange?
Dr. Chang's average Medicare payment per service is $33. 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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