Dr. Stephen May, M.D.
What this data tells you about Dr. May
Dr. Stephen May is an internal medicine specialist in San Antonio, TX, with 18 years of NPI registration. Based on federal Medicare data, Dr. May performed 4,434 Medicare services across 2,064 unique beneficiaries.
Between the years covered by Open Payments, Dr. May received a total of $18,732 from 10 pharmaceutical and/or device companies across 80 individual payments. These payments are legal, publicly disclosed under the federal Sunshine Act, and common in internal medicine. The majority of payments are for consulting, which typically reflects recognized clinical expertise sought by manufacturers. Patients may wish to discuss these relationships with their provider.
The Data Coverage level for Dr. May 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 |
|---|---|---|---|
| Evaluation of cardiac rhythm monitor system, remote up to 30 days | 1,183 | $18 | $81 |
| Evaluation of implantable heart and blood vessel monitoring system, remote up to 30 days | 630 | $19 | $74 |
| Remote pacemaker monitoring, 90 days | 622 | $21 | $100 |
| Electrocardiogram (EKG), 12-lead | 347 | $10 | $58 |
| Evaluation of single, dual, or multiple lead implantable defibrillator system, remote up to 90 days | 247 | $27 | $181 |
| Office visit, established patient (30-39 min) | 165 | $86 | $300 |
| Use of a drug to induce depression of consciousness by physician performing a procedure (5 years or older), initial 15 minutes | 97 | $9 | $77 |
| Programming of dual lead pacemaker system | 86 | $57 | $179 |
| Ultrasound of heart with probe in esophagus, with report | 85 | $79 | $315 |
| Evaluation of cardiac rhythm monitor system | 84 | $34 | $113 |
| Ultrasound of heart blood flow, valves and chambers | 83 | $13 | $57 |
| New patient office visit, complex (60-74 min) | 76 | $158 | $573 |
| Ultrasonic guidance for blood vessel access | 72 | $11 | $41 |
| Ultrasound of heart with color-depicted blood flow, rate and valve function | 55 | $2 | $11 |
| Insertion of heart rhythm monitor under skin | 53 | $56 | $256 |
| Office visit, established patient, complex (40-54 min) | 53 | $122 | $401 |
| Programming of heart rhythm stimulation after drug infusion | 46 | $62 | $452 |
| Hospital follow-up visit, moderate complexity | 45 | $58 | $202 |
| Echocardiogram, transthoracic | 37 | $51 | $205 |
| Comprehensive electrophysiologic evaluation with catheter destruction of abnormality causing atrial fibrillation (uncoordinated contraction of upper chambers of heart) by pulmonary vein isolation | 35 | $710 | $3,196 |
| New patient office visit (45-59 min) | 32 | $108 | $456 |
| 3d ultrasound imaging of heart for evaluation of heart structure performed during ultrasound imaging of congenital heart defects | 29 | $18 | $70 |
| Removal of heart rhythm monitor from under the skin | 25 | $36 | $250 |
| Repair of left upper heart chamber with implant with review by radiologist | 25 | $559 | $2,372 |
| Insertion of pacemaker and upper and lower heart chamber electrode | 24 | $360 | $1,480 |
| Programming of multiple lead implantable defibrillator system | 24 | $75 | $274 |
| Office visit, established patient (20-29 min) | 23 | $58 | $202 |
| Programming of dual lead implantable defibrillator system | 21 | $65 | $237 |
| Electrocardiogram (ecg) up to 30 days continuous with review and report by health care professional | 19 | $18 | $73 |
| Destruction of tissue of upper heart chamber through tube to treat abnormal heart rhythm | 19 | $230 | $1,212 |
| Ultrasound evaluation of heart blood vessel with review by radiologist | 16 | $56 | $418 |
| External shock to heart to regulate heart beat | 15 | $80 | $362 |
| Insertion of catheters and destruction of tissue to treat abnormal heart rhythm | 14 | $230 | $1,212 |
| Programming of multiple lead pacemaker system | 13 | $65 | $210 |
| Insertion of catheters for recording and pacing of left lower heart chamber rhythm and induction of abnormal rhythm | 12 | $127 | $490 |
| Removal and replacement of dual lead permanent pacemaker | 11 | $256 | $1,022 |
| Comprehensive electrophysiologic evaluation with catheter destruction of abnormality of upper chamber of heart causing supraventricular tachycardia (rapid heart rate) | 11 | $626 | $2,379 |
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 (50%) are consulting fees, which typically reflect recognized clinical expertise sought by manufacturers. Total industry engagement is in the top 5% for internal medicine in TX.
Geographic Context
4.8 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. May is a remote & electrophysiology specialist, with above-average Medicare volume (top 8% in TX), with consulting-driven industry engagement in the top 5% of TX peers, with 18 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. May experienced with evaluation of cardiac rhythm monitor system, remote up to 30 days?
Does Dr. May receive payments from pharmaceutical companies?
How do Dr. May's costs compare to other internal medicine physicians 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