Dr. Marc Chalaby, M.D.
What this data tells you about Dr. Chalaby
Dr. Marc Chalaby is an internal medicine specialist in San Antonio, TX, with 20 years of NPI registration. Based on federal Medicare data, Dr. Chalaby performed 1,781 Medicare services across 903 unique beneficiaries.
Between the years covered by Open Payments, Dr. Chalaby received a total of $46,871 from 46 pharmaceutical and/or device companies across 598 individual payments. These payments are legal, publicly disclosed under the federal Sunshine Act, and common in internal medicine. The majority of payments are for speaking programs and promotional activities, reflecting participation in industry-sponsored events. Patients may wish to discuss these relationships with their provider.
The Data Coverage level for Dr. Chalaby is Very High — reflecting how much public federal data is available about this provider. This is not a quality rating. 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 |
|---|---|---|---|
| Hospital follow-up visit, moderate complexity | 618 | $61 | $136 |
| Critical care, first 30-74 min | 457 | $165 | $636 |
| Hospital follow-up visit, high complexity | 253 | $92 | $301 |
| Office visit, established patient (20-29 min) | 109 | $67 | $190 |
| Initial hospital admission, high complexity | 101 | $132 | $485 |
| Office visit, established patient (30-39 min) | 67 | $91 | $213 |
| Test to measure expiratory airflow and volume changes before and after medication administration | 65 | $29 | $101 |
| New patient office visit (30-44 min) | 20 | $83 | $192 |
| New patient office visit (45-59 min) | 18 | $123 | $290 |
| Test for exercise-induced lung stress | 17 | $24 | $82 |
| Insertion of non-tunneled central venous tube for infusion (5 years or older) | 15 | $64 | $441 |
| Test to determine lung volumes using gas dilution or washout | 15 | $32 | $102 |
| Test to examine how well the lungs exchange gases | 15 | $41 | $128 |
| Emergent insertion of breathing tube into windpipe using an endoscope | 11 | $108 | $356 |
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)
Associated products mentioned in payments ›
The majority of payments (66%) are for speaking programs and promotional activities, which reflect participation in industry-sponsored educational or marketing events. This is common in internal medicine and does not inherently indicate bias, but patients may wish to be aware. Total industry engagement is in the top 2% for internal medicine in TX.
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 measures how much public data is available about a provider — not how good they are. How we calculate this →
Summary
Dr. Chalaby is a mixed practice specialist, with above-average Medicare volume (top 20% in TX), with speaking/promotional industry engagement in the top 2% of TX peers, with 20 years of NPI registration.
This summary is auto-generated from federal data. It describes data availability and patterns — not clinical quality. Read our methodology →
Frequently Asked Questions
Is Dr. Chalaby experienced with hospital follow-up visit, moderate complexity?
Does Dr. Chalaby receive payments from pharmaceutical companies?
How do Dr. Chalaby's costs compare to other internal medicine physicians in San Antonio?
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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. The Transparency Score measures 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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