Dr. Michael Dorsi, MD
What this data tells you about Dr. Dorsi
Dr. Michael Dorsi is a neurological surgery specialist in Thousand Oaks, CA, with 19 years of NPI registration. Based on federal Medicare data, Dr. Dorsi performed 517 Medicare services across 439 unique beneficiaries.
Between the years covered by Open Payments, Dr. Dorsi received a total of $636,052 from 44 pharmaceutical and/or device companies across 1768 individual payments. These payments are legal, publicly disclosed under the federal Sunshine Act, and common in neurological surgery. 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. Dorsi 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 |
|---|---|---|---|
| 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. |
264 | $74 | $508 |
| New patient office visit, complex (60-74 min) | 121 | $175 | $1,360 |
| 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. |
26 | $106 | $858 |
| Spine fusion with cage or mesh device insertion A surgical procedure to fuse spine bones by inserting a cage or mesh device into the disc space. |
25 | $211 | $1,191 |
| Initial hospital admission, high complexity Initial hospital inpatient or observation care for a new patient involving high-level medical decision making, with at least 75 minutes total time on the date of the encounter. |
23 | $147 | $1,320 |
| Spinal neurostimulator generator insertion Surgical placement of a spinal neurostimulator generator or receiver device. |
21 | $185 | $1,769 |
| New patient office visit (45-59 min) An initial office visit for a new patient lasting between 45 and 59 minutes. This code covers the total time spent by the physician or qualified healthcare professional on the date of the encounter. |
14 | $129 | $1,085 |
| Spinal bone removal for neurostimulator electrode insertion This procedure involves removing a portion of the spine bone to create space for inserting a neurostimulator electrode plate into the spinal area. |
12 | $716 | $5,719 |
| 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. |
11 | $113 | $960 |
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 ›
The majority of payments (46%) are for speaking programs and promotional activities, which reflect participation in industry-sponsored educational or marketing events. This is common in neurological surgery and does not inherently indicate bias, but patients may wish to be aware. Total industry engagement is in the top 3% for neurological surgery in CA.
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. Dorsi is a clinical cardiology specialist, with above-average Medicare volume (top 23% in CA), with speaking/promotional industry engagement in the top 3% of CA peers, 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. Dorsi experienced with office visit, established patient (20-29 min)?
Does Dr. Dorsi receive payments from pharmaceutical companies?
How do Dr. Dorsi's costs compare to other neurological surgerists in Thousand Oaks?
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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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