Dr. Sean Leson, D.O.
What this data tells you about Dr. Leson
Dr. Sean Leson is a clinical & laboratory immunology physician in Garden Grove, CA, with 19 years of NPI registration. Based on federal Medicare data, Dr. Leson performed 1,955 Medicare services across 222 unique beneficiaries.
Between the years covered by Open Payments, Dr. Leson received a total of $1,990 from 3 pharmaceutical and/or device companies across 83 individual payments. These payments are legal, publicly disclosed under the federal Sunshine Act, and common in clinical & laboratory immunology (allergy & immunology) physician. 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. Leson 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
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 |
|---|---|---|---|
| Prolonged office E/M service, first 15 minutes This code is used for additional time spent by a physician beyond the maximum required time of a primary office or outpatient evaluation and management service. It is billed in 15-minute increments based on total time spent on the date of the primary service. |
628 | $27 | $39 |
| Sphenoid sinus irrigation A procedure to flush out the sphenoid sinus, which is located deep in the nasal cavity, using a liquid solution to clear debris or mucus. |
158 | $172 | $257 |
| 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. |
147 | $153 | $218 |
| Nasal and throat exam with endoscope A procedure to visually examine the nose and throat using a thin, flexible tube with a camera. This allows for direct visualization of the internal structures of the upper airway. |
145 | $109 | $165 |
| Inhalation treatment for acute airway obstruction, first hour This procedure involves administering inhaled medication to treat acute airway obstruction during the first hour of treatment. |
145 | $56 | $81 |
| Initial therapy to facilitate lung function A therapy service designed to help improve or maintain lung function. This is the first session of this specific treatment plan. |
135 | $22 | $29 |
| Middle ear function test A diagnostic test used to evaluate how well the middle ear is functioning. |
128 | $15 | $30 |
| Breathing device use evaluation An assessment of how a patient uses a breathing device. The provider reviews the patient's technique and device handling. |
128 | $16 | $22 |
| Inhalation treatment for acute airway obstruction, each additional hour This procedure involves administering inhaled medication to treat acute airway obstruction. It is billed for each additional hour of treatment beyond the initial period. |
118 | $15 | $22 |
| Follow-up therapy for lung function A follow-up therapy service designed to facilitate lung function. |
113 | $22 | $29 |
| Spirometry test before and after medication A test that measures the amount of air you can exhale and the speed of your breathing before and after taking a medication. |
110 | $35 | $70 |
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)
All-time payments by company (2018-2024) ›
Associated products mentioned in payments ›
Most payments (100%) are for meals and travel — low-value interactions that are common across virtually all practicing physicians.
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 reflects how much public data is available about a provider. How we calculate this →
Summary
Dr. Leson is a mixed practice specialist, with moderate Medicare volume, with low-engagement industry engagement, 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
Is Dr. Leson experienced with prolonged office e/m service, first 15 minutes?
Does Dr. Leson receive payments from pharmaceutical companies?
How do Dr. Leson's costs compare to other clinical & laboratory immunology physicians in Garden Grove?
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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. 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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