Dr. Joseph Mendelis, MD
What this data tells you about Dr. Mendelis
Dr. Joseph Mendelis is an orthopaedic surgery of the spine physician in Westlake Village, CA, with 11 years of NPI registration. Based on federal Medicare data, Dr. Mendelis performed 1,427 Medicare services across 1,157 unique beneficiaries.
Between the years covered by Open Payments, Dr. Mendelis received a total of $15,029 from 22 pharmaceutical and/or device companies across 60 individual payments. These payments are legal, publicly disclosed under the federal Sunshine Act, and common in orthopaedic surgery of the spine physician. The majority of payments are classified as research and scientific activities (grants and research funding). Patients may wish to discuss these relationships with their provider.
The Data Coverage level for Dr. Mendelis 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 (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. |
589 | $103 | $858 |
| X-ray of lower and sacral spine, minimum of 4 views An X-ray imaging test of the lower back and sacrum using at least four different angles to visualize the bones and joints. |
235 | $46 | $281 |
| 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. |
181 | $136 | $1,085 |
| X-ray of lower and sacral spine, 2-3 views An X-ray imaging test that captures 2 to 3 views of the lower back and sacral spine to visualize the bones and joints in this area. |
108 | $36 | $208 |
| 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. |
81 | $70 | $508 |
| X-ray of upper spine, 4-5 views An X-ray imaging test of the upper spine using 4 to 5 different views to visualize the bones and structures in that area. |
73 | $47 | $277 |
| 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. |
54 | $153 | $960 |
| X-ray of upper spine, 2-3 views An X-ray imaging test of the upper spine using two to three different angles to visualize the bones and structures. |
29 | $36 | $191 |
| Partial removal of spine bone with nerve release, 1 segment A surgical procedure involving the partial removal of a bone segment in the spine to relieve pressure on the spinal cord or nerves. This is performed on a single spinal segment. |
22 | $691 | $6,549 |
| X-ray of middle spine, 2 views An X-ray imaging test that produces two views of the middle section of the spine to visualize the bones and joints. |
22 | $28 | $178 |
| Injection of anesthetic agent and/or steroid into other nerve or branch | 18 | $60 | $514 |
| X-ray of entire middle and lower spine, 2-3 views An X-ray imaging test that captures 2 to 3 views of the entire middle and lower spine to visualize the bones and structures in these areas. |
15 | $66 | $329 |
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 (2020-2024) ›
Associated products mentioned in payments ›
The majority of payments (66%) are classified as scientific/research, suggesting involvement in clinical studies, grants, or innovation-related work.
Geographic Context
3.4 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. Mendelis is a clinical cardiology specialist, with above-average Medicare volume (top 23% in CA), with research-focused industry engagement.
This summary is auto-generated from federal data, describing data availability and patterns. Read our methodology →
Frequently Asked Questions
Is Dr. Mendelis experienced with office visit, established patient (30-39 min)?
Does Dr. Mendelis receive payments from pharmaceutical companies?
How do Dr. Mendelis's costs compare to other orthopaedic surgery of the spine physicians in Westlake Village?
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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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