Dr. Ellen Duncan, M.D.
What this data tells you about Dr. Duncan
Dr. Ellen Duncan is an anesthesiology in San Antonio, TX, with 19 years in practice. Based on federal Medicare data, Dr. Duncan performed 7,001 Medicare services across 2,254 unique beneficiaries.
Between the years covered by Open Payments, Dr. Duncan received a total of $6,085 from 35 pharmaceutical and/or device companies across 384 individual payments. These payments are legal, publicly disclosed under the federal Sunshine Act, and common in anesthesiology. 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. Duncan 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 |
|---|---|---|---|
| Office visit, established patient (30-39 min) | 3,015 | $91 | $262 |
| Contrast dye for imaging (iodine-based) | 1,343 | $0 | $1 |
| Injection, methylprednisolone acetate, 40 mg | 427 | $6 | $18 |
| Office visit, established patient (20-29 min) | 393 | $64 | $201 |
| Injection, propofol, 10 mg | 242 | $0 | $1 |
| Injection, midazolam hydrochloride, per 1 mg | 219 | $0 | $3 |
| Injection, ketorolac tromethamine, per 15 mg | 157 | $0 | $19 |
| Injection of substance into lower spine canal using imaging guidance | 149 | $191 | $406 |
| Injection, methylprednisolone acetate, 20 mg | 125 | $4 | $11 |
| Injection of anesthetic and/or steroid drug into sacral spine nerve root using imaging guidance, single level | 115 | $215 | $480 |
| New patient office visit (45-59 min) | 109 | $112 | $273 |
| Drug injection, under skin or into muscle | 87 | $11 | $44 |
| Insertion of spinal neurostimulator electrode array through skin | 84 | $1,322 | $3,277 |
| Injection of substance into middle or upper spine canal using imaging guidance | 81 | $196 | $431 |
| Use of a drug to induce depression of consciousness by physician performing a procedure (5 years or older), initial 15 minutes | 62 | $38 | $81 |
| Injection of trigger points, 3 or more muscles | 58 | $42 | $165 |
| Joint injection, major joint | 58 | $52 | $175 |
| Injection of anesthetic and/or steroid drug into sacral spine nerve root using imaging guidance, each additional level | 52 | $91 | $174 |
| Injection of lower or sacral spine facet joint using imaging guidance, single level | 43 | $164 | $410 |
| Fluoroscopic guidance for needle placement | 43 | $85 | $167 |
| Electronic analysis of implanted neurostimulator generator with complex spinal cord or peripheral nerve stimulator programming | 36 | $43 | $255 |
| Injection of lower or sacral spine facet joint using imaging guidance, second level | 27 | $80 | $207 |
| Destruction of lower or sacral spinal facet joint nerves using imaging guidance, single facet joint | 26 | $461 | $1,050 |
| Destruction of lower or sacral spinal facet joint nerves using imaging guidance, each additional facet joint | 18 | $253 | $487 |
| Injection of anesthetic or steroid into joint between lower spine and hip bone using imaging guidance | 17 | $137 | $576 |
| Injection of upper or middle spine facet joint using imaging guidance, single level | 15 | $181 | $440 |
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 ›
Most payments (100%) are for meals and travel — low-value interactions that are common across virtually all practicing physicians. Total industry engagement is in the top 6% for anesthesiology 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. Duncan is a clinical cardiology specialist, with above-average Medicare volume (top 1% in TX), and high industry engagement (low-engagement, top 6%), with 19 years of practice experience.
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. Duncan experienced with office visit, established patient (30-39 min)?
Does Dr. Duncan receive payments from pharmaceutical companies?
How do Dr. Duncan's costs compare to other anesthesiologys in San Antonio?
What does Data Coverage mean?
Is this data up to date?
Explore related providers
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.
Provider corrections: Provider portal · Privacy questions: Privacy Policy · Terms: Terms of Use · Methodology: Methodology