Dr. Adolfo Diaz, MD
What this data tells you about Dr. Diaz
Dr. Adolfo Diaz is a hospitalist physician in San Antonio, TX, with 14 years in practice. Based on federal Medicare data, Dr. Diaz performed 18,136 Medicare services across 985 unique beneficiaries.
Between the years covered by Open Payments, Dr. Diaz received a total of $349,082 from 18 pharmaceutical and/or device companies across 330 individual payments. These payments are legal, publicly disclosed under the federal Sunshine Act, and common in hospitalist physician. 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. Diaz 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 |
|---|---|---|---|
| Pembrolizumab injection (Keytruda) | 7,200 | $43 | $161 |
| Anti-nausea injection (fosaprepitant) | 4,200 | $0 | $1 |
| BCG treatment for bladder cancer | 2,459 | $2 | $9 |
| Anti-nausea injection (ondansetron/Zofran) | 1,032 | $0 | $0 |
| Dexamethasone injection (steroid) | 984 | $0 | $0 |
| Injection, fluorouracil, 500 mg | 315 | $2 | $6 |
| Anti-nausea injection (Aloxi/palonosetron) | 280 | $1 | $7 |
| Injection, gemcitabine hydrochloride, not otherwise specified, 200 mg | 217 | $3 | $11 |
| Office visit, established patient (30-39 min) | 196 | $93 | $313 |
| Injection of additional new drug or substance into vein | 183 | $12 | $47 |
| Administration of chemotherapy into vein, 1 hour or less | 169 | $100 | $391 |
| Injection, magnesium sulfate, per 500 mg | 168 | $1 | $2 |
| Infusion into a vein for therapy, prevention, or diagnosis, additional sequential infusion, 1 hour or less | 104 | $22 | $87 |
| Instillation of anti-cancer drug into bladder | 72 | $66 | $257 |
| Office visit, established patient, complex (40-54 min) | 59 | $127 | $439 |
| Injection, zoledronic acid, 1 mg | 49 | $6 | $26 |
| Drug injection, under skin or into muscle | 44 | $11 | $41 |
| Administration of chemotherapy into vein, each additional hour | 41 | $22 | $86 |
| Administration of additional new drug or substance into vein, 1 hour or less | 41 | $50 | $196 |
| Administration of non-hormonal anti-neoplastic chemotherapy under skin or into muscle | 40 | $56 | $219 |
| Infusion into a vein for hydration, each additional hour | 37 | $10 | $38 |
| Chemotherapy administration, intravenous infusion technique; initiation of infusion in the office/clinic setting using office/clinic pump/supplies, with continuation of the infusion in the community setting (e.g., home, domiciliary, rest home or assisted l | 33 | $127 | $468 |
| Infusion into a vein for therapy, prevention, or diagnosis, 1 hour or less | 32 | $47 | $193 |
| Infusion into a vein for therapy, prevention, or diagnosis, each additional hour | 30 | $16 | $62 |
| Injection, diphenhydramine hcl, up to 50 mg | 27 | $1 | $3 |
| Infusion, normal saline solution , 1000 cc | 27 | $2 | $8 |
| Administration of hormonal anti-neoplastic chemotherapy under skin or into muscle | 20 | $25 | $97 |
| Office visit, established patient (20-29 min) | 19 | $63 | $220 |
| Infusion, normal saline solution, 250 cc | 17 | $1 | $2 |
| Unclassified drugs | 15 | $1 | $3 |
| Irrigation of implanted venous access drug delivery device | 14 | $17 | $76 |
| New patient office visit, complex (60-74 min) | 12 | $157 | $537 |
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 (97%) are for speaking programs and promotional activities, which reflect participation in industry-sponsored educational or marketing events. This is common in hospitalist physician and does not inherently indicate bias, but patients may wish to be aware. Total industry engagement is in the top 0% for hospitalist physician in TX.
Geographic Context
5.2 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. Diaz is a mixed practice specialist, with above-average Medicare volume (top 1% in TX), and high industry engagement (speaking/promotional, top 0%).
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. Diaz experienced with pembrolizumab injection (keytruda)?
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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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