Dr. William Ondo, M.D.
What this data tells you about Dr. Ondo
Dr. William Ondo is a neurology specialist in Houston, TX, with 19 years of NPI registration. Based on federal Medicare data, Dr. Ondo performed 43,874 Medicare services in 2023. These records do not provide a deduplicated patient total.
Between the years covered by Open Payments, Dr. Ondo received a total of $1,333,750 from 70 pharmaceutical and/or device companies across 2101 payment records. A record can group multiple payments. These transfers are publicly reported through CMS Open Payments. Disclosure alone does not establish their effect on care. A reliable breakdown by payment category is not available in this snapshot. Patients may wish to discuss these relationships with their provider.
The Data Coverage level for Dr. Ondo 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 — 2023
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 |
|---|---|---|---|
| Botox injection, per unit An injection of onabotulinumtoxinA, a medication used to temporarily relax muscles or reduce gland activity. The dose is measured in units, with this code representing a single unit administered. |
41,378 | $5 | $8 |
| Rimabotulinumtoxinb injection, 100 units An injection of rimabotulinumtoxinb administered in a dose of 100 units. |
1,050 | $10 | $15 |
| 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. |
332 | $92 | $236 |
| 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. |
211 | $122 | $316 |
| Office visit, established patient (20-29 min) An office visit for an existing patient lasting between 20 and 29 minutes. The visit involves medical evaluation and management of the patient's condition. |
170 | $71 | $159 |
| Brain stimulator programming, additional 15 minutes Electronic analysis and programming of an implanted brain neurostimulator generator by a qualified health professional. This code applies to each additional 15-minute increment beyond the initial service. |
142 | $34 | $232 |
| Chemical nerve block for neck muscles Injection of a chemical agent to paralyze specific muscles on the side of the neck, excluding the voice box. |
139 | $152 | $450 |
| Chemical nerve block for facial paralysis Injection of a chemical agent to paralyze specific nerves or muscles on the side of the face. |
133 | $126 | $450 |
| Brain stimulator programming, first 15 minutes Electronic analysis of an implanted brain, spinal cord, or peripheral neurostimulator generator. This service includes programming the brain stimulator by a qualified health professional for the first 15 minutes. |
88 | $36 | $266 |
| New patient office visit, complex (60-74 min) | 64 | $158 | $450 |
| Needle measurement of electrical activity in muscle with injection of chemical for paralysis of nerve muscle | 60 | $61 | $104 |
| Chemical paralysis of salivary glands, bilateral Injection of a chemical agent to paralyze the salivary glands on both sides of the mouth. |
33 | $84 | $300 |
| Chemical nerve block injection, 1-4 muscles An injection of a chemical agent to paralyze specific muscles in an arm or leg. This procedure targets one to four muscles in the first extremity treated. |
33 | $64 | $300 |
| Telephone medical discussion, 21-30 minutes A telephone conversation with a physician lasting between 21 and 30 minutes. This code covers the time spent discussing medical matters over the phone. |
25 | $93 | $255 |
| Online digital E/M service, established patient, 11-20 min An online digital evaluation and management service for an established patient. The service involves a total time of 11 to 20 minutes over a period of up to 7 days. |
16 | $19 | $95 |
Industry Payment Transparency
Open Payments through 2024 ↗Payment categories are unavailable while the source breakdown is being rebuilt. Company and year totals do not identify how much belongs to each category.
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 ›
Geographic Context
0.0 mi
Data Sources
| Provider Registry | ✓ NPPES | NPPES snapshot; verify current record |
| Medicare Enrollment | ✓ PECOS | PECOS snapshot |
| Practice Data | ✓ Medicare Util. | Annual (CY lag) |
| Industry Payments | ✓ Open Payments | CY 2024 |
| Disciplinary History | — Not included | 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. Ondo is a mixed practice specialist, with above-average Medicare volume (top 2% in TX), with 19 years of NPI registration.
This summary is auto-generated from federal data, describing data availability and patterns. Read our methodology →
Frequently Asked Questions
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This page combines public CMS records with calculated summaries and explanatory procedure labels. These transformations are not verbatim federal records. Sources: 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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