Dr. Bianca Chang
What this data tells you about Dr. Chang
Dr. Bianca Chang is a gastroenterology specialist in West Hollywood, CA, with 12 years of NPI registration. Based on federal Medicare data, Dr. Chang performed 645 Medicare services across 494 unique beneficiaries.
Between the years covered by Open Payments, Dr. Chang received a total of $4,220 from 12 pharmaceutical and/or device companies across 40 individual payments. These payments are legal, publicly disclosed under the federal Sunshine Act, and common in gastroenterology. 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.
Medicare Practice Summary
Medicare Utilization ↗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 |
|---|---|---|---|
| Hydrogen breath test A test that measures hydrogen levels in your breath to help evaluate stomach and bowel symptoms. |
225 | $8 | $33 |
| 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. |
80 | $114 | $464 |
| 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. |
65 | $71 | $321 |
| Rectal and anal tone and sensation test A physical examination to assess muscle tone and sensory function in the rectum and anus. |
44 | $39 | $157 |
| Rectal sensitivity and function study A test to evaluate the sensitivity and functional performance of the rectum. |
44 | $70 | $284 |
| Esophageal motility study A test that evaluates the movement and function of the esophagus. |
41 | $49 | $211 |
| Esophageal function monitoring via nasal tube This procedure involves monitoring and recording esophageal function using a tube inserted through the nose that contains electrodes. |
39 | $38 | $160 |
| Biofeedback training for bowel or bladder control, each additional 15 minutes This procedure involves additional 15-minute sessions of biofeedback training to help improve control over bowel or bladder functions. |
31 | $21 | $89 |
| Biofeedback training for bowel or bladder control, initial 15 minutes A 15-minute session using biofeedback techniques to help patients gain control over bowel or bladder functions. The training involves monitoring physiological processes to learn how to manage muscle activity. |
30 | $34 | $186 |
| Hospital follow-up visit, moderate complexity Follow-up hospital visit for an existing patient involving moderate medical decision making. The visit requires at least 35 minutes of time spent on the date of service. |
27 | $68 | $246 |
| Esophageal function monitoring via nasal tube This procedure involves prolonged monitoring and recording of esophageal function using a nasal tube equipped with an electrode. |
19 | $43 | $181 |
Industry Payment Transparency
Open Payments through 2024 ↗Payment profile
Industry payments classified by relationship type. Not all payments are equal — research and consulting reflect different relationships than speaking programs or meals.
Payment trend by year
Annual totals from pharmaceutical and medical device companies.
Payments by company (2024)
All-time payments by company (2018-2024) ›
Associated products mentioned in payments ›
Most payments (76%) are for meals and travel — low-value interactions that are common across virtually all practicing physicians.
Geographic Context
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 moderate Medicare volume, with low-engagement industry engagement.
This summary is auto-generated from federal data, describing data availability and patterns. Read our methodology →
Frequently Asked Questions
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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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