Medicare Enrolled
Dr. Marvin Chang, MD
Pain Medicine · Sugar Land, TX
Practice pattern: Clinical Cardiology
— Primarily office-based clinical cardiology
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. Marvin Chang is a pain medicine specialist in Sugar Land, TX, with 20 years of NPI registration. Based on federal Medicare data, Dr. Chang performed 3,357 Medicare services in 2023. These records do not provide a deduplicated patient total.
Between the years covered by Open Payments, Dr. Chang received a total of $11,673 from 41 pharmaceutical and/or device companies across 294 payment records. A record can group multiple payments. These transfers are publicly reported through CMS Open Payments. Disclosure alone does not establish their effect on care. A reliable breakdown by payment category is not available in this snapshot. 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.
✓ 20 years of NPI registration
▲ Top 34% volume in TX
$11,673 industry payments
Medicare Practice Summary — 2023
Medicare Utilization ↗3,357
Medicare services
Top 34% in TX for pain medicine
Not available
Unique patients (not deduplicated)
$68
Avg. Medicare payment
Medicare patients only (65+ / disabled) · How to read this →
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. |
1,875 | $88 | $225 |
| Assessment of emotional or behavioral problems An evaluation to identify and understand emotional or behavioral issues. This process involves reviewing symptoms and behaviors to determine the nature of the concerns. |
596 | $3 | $14 |
| Health risk assessment administration and interpretation This procedure involves administering a health risk assessment to a patient and interpreting the results. |
173 | $2 | $38 |
| 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. |
147 | $125 | $350 |
| 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. |
101 | $75 | $1,165 |
| 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. |
88 | $70 | $175 |
| 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. |
70 | $93 | $1,622 |
| 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. |
68 | $88 | $1,006 |
| 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. |
68 | $54 | $975 |
| Spinal drug pump reprogramming and refill A physician electronically adjusts the settings of a spinal drug infusion pump and refills its medication reservoir. |
44 | $65 | $400 |
| 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. |
38 | $149 | $1,575 |
| Facet joint nerve destruction, additional joint This procedure uses imaging guidance to destroy nerves in an additional lower or sacral spinal facet joint. |
37 | $46 | $815 |
| 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. |
25 | $77 | $1,375 |
| Joint injection, major joint Removal of fluid from a large joint and/or injection of medication into the joint space. |
14 | $36 | $455 |
| 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. |
13 | $72 | $1,063 |
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. These counts do not measure clinical quality or years of experience.
Industry Payment Transparency
Open Payments through 2024 ↗$11,673
Total received (2018-2024)
Avg $1,668/year across 7 years
Top 18% in TX for pain medicine
A higher payment rank reflects disclosed industry relationships (consulting, research, speaking) common among subspecialists — not wrongdoing.
41
Companies
294
Payment records
Payments are publicly reported; disclosure does not establish legality · Not evidence of wrongdoing · How to interpret →
Payment categories are unavailable while the source breakdown is being rebuilt. Company and year totals do not identify how much belongs to each category.
Payment trend by year
Annual totals from pharmaceutical and medical device companies.
2024
$434
2023
$418
2022
$1,996
2021
$2,121
2020
$1,506
2019
$3,324
2018
$1,875
Payments by company (2024)
Medtronic, Inc.
$129
SI-BONE, INC.
$93
PAINTEQ LLC
$93
Nevro Corp.
$52
Salix Pharmaceuticals, a division of Bausch Health US, LLC
$43
Collegium Pharmaceutical, Inc.
$23
Top 3 companies account for 72.8% of 2024 payments
All-time payments by company (2018-2024) ›
Medtronic Vascular, Inc.
$2,191
Abbott Laboratories
$2,041
Medtronic, Inc.
$1,852
Nevro Corp.
$1,202
Nalu Medical, Inc.
$1,050
Nuvectra Corporation
$607
Salix Pharmaceuticals, a division of Bausch Health US, LLC
$434
Medtronic USA, Inc.
$330
Collegium Pharmaceutical, Inc.
$322
PFIZER INC.
$248
SCILEX PHARMACEUTICALS INC.
$169
Scilex Pharmaceuticals Inc.
$145
Horizon Therapeutics plc
$136
PAINTEQ LLC
$115
SI-BONE, INC.
$93
BOSTON SCIENTIFIC CORPORATION
$64
ASSERTIO THERAPEUTICS, Inc.
$61
Hikma Pharmaceuticals USA
$56
Kaleo, Inc.
$44
Biohaven Pharmaceutical Holding Company Ltd.
$43
Vertiflex, Inc.
$39
BioDelivery Sciences International, Inc.
$39
Boston Scientific Corporation
$30
ARBOR PHARMACEUTICALS, INC.
$28
IBSA Pharma Inc.
$28
FUJIFILM SonoSite, Inc.
$28
Assertio Therapeutics, Inc.
$27
Pernix Therapeutics Holdings, Inc.
$25
TISSUETECH, INC.
$24
Electronic Waveform Lab, Inc.
$23
Purdue Pharma L.P.
$23
Amgen Inc.
$23
GRT US Holding, Inc.
$22
Daiichi Sankyo Inc.
$18
SI-BONE, Inc.
$17
Vertical Pharmaceuticals, LLC
$15
Zyla Life Sciences, Inc.
$14
Kowa Pharmaceuticals America, Inc.
$13
Relievant Medsystems, Inc.
$13
Shionogi Inc
$12
Horizon Pharma plc
$11
Top 3 companies account for 52.1% of all-time payments
Associated products mentioned in payments ›
ACTIVA PC · Aimovig · Algovita · Axium INS DRG IPG · BELBUCA · ClosureFast · ClosureRFS · DUEXIS · Edge Ultrasound System · Evzio · FLECTOR · Gralise · Horizant · INTELLIS · INTELLIS ADAPTIVESTIM · Intracept · KYPHON Balloon Kyphoplasty · Kloxxado · LICART · LIORESAL · LORZONE · LUCEMYRA · LYRICA · Licart · MYSTIM · Movantik · NEOX · NURTEC ODT · Nalu Neurostimulation System · Omnia · PAINTEQ · PENNSAID · PERCEPT PC BRAINSENSE · PROCLAIM · PlasmaBlade · Proclaim Family of SCS IPGs · Proclaim IPG · Qutenza · RELISTOR · RELISTOR ORAL · RESTORE · SPECTRA WAVEWRITER · SPRIX · SYMPROIC · SYNCHROMED · Seglentis · Senza · Senza Spinal Cord Stimulation System · Superion · Superion ISS · Superion Indirect Decompression System · Symproic · V-LOC 180 · XTAMPZA · XTAMPZAER · Xtampza ER · ZOHYDRO ER · ZTLido · ZTLido 30 POUCH in 1 CARTON 1 PATCH in 1 POUCH · Zipsor · iFuse Implant
Should you be concerned? Industry payments are disclosed through CMS Open Payments. Disclosure alone does not establish their purpose, legality, or effect on care. 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 →
Geographic Context
Pain medicines in nearby ZIP areas
19
County median income
$113,409
Nearest hospital to ZIP centroid (approximate)
HOUSTON METHODIST SUGARLAND HOSPITAL
0.0 mi
0.0 mi
Data Sources
| Provider Registry | ✓ NPPES | NPPES snapshot; verify current record |
| Medicare Enrollment | ✓ PECOS | PECOS snapshot |
| Practice Data | ✓ Medicare Util. | Annual (CY lag) |
| Industry Payments | ✓ Open Payments | CY 2024 |
| Disciplinary History | — Not included | 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 moderate Medicare volume, 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. Chang experienced with office visit, established patient (30-39 min)?
Based on Medicare claims data, Dr. Chang performed 1,875 office visit, established patient (30-39 min) services. These records cover Medicare fee-for-service activity, including eligible younger beneficiaries; they do not measure total practice volume or clinical quality.
Does Dr. Chang receive payments from pharmaceutical companies?
Yes. Dr. Chang received a total of $11,673 from 41 companies across 294 payment records. A record can group multiple payments. These transfers are publicly disclosed through CMS Open Payments. Disclosure alone does not establish their legality or effect on care. 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 medicines in Sugar Land?
Dr. Chang's average Medicare payment per service is $68. 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 the presence of registry, enrollment, activity or payment records, not verified experience or clinical quality. 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?
Source publication dates and the snapshots loaded on this site can differ. Rebuilding a page does not refresh its source records. Check the Medicare reporting year and the payment interval shown above; consult the linked official sources for newer releases and current registry details. See our data freshness policy →
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About this page
This page combines public CMS records with calculated summaries and explanatory procedure labels. These transformations are not verbatim federal records. Sources: 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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