DEAN BROWN is effectively a Medicare-focused optometrist practice with $535.4K in lifetime Medicare revenue and no Medicaid billing on file, indicating a single‑payer footprint in the available data rather than a mixed payer panel. The absence of any Medicaid claims suggests the provider either does not participate in Medicaid or does not bill that program, which has implications for network contracting and population coverage assessments. The provider has been NPI enumerated since 2006-04-06 (~20 years ago), signaling long tenure and sustained Medicare billing activity over two decades, which supports stability in claims experience and ordering patterns. Revenue concentration is high: the precomputed top-three Medicare codes account for 86.3% of total Medicare revenue, indicating that a few procedures drive the vast majority of billed Medicare dollars and that the practice has a focused service mix rather than a broad revenue distribution. The single largest revenue driver is code 68761 (lacrimal punctum plug), which generated $389.6K or 72.5% of Medicare revenue and ranks the provider #3 of 3340 nationally (100th percentile); this is described in the data as an extreme outlier and positions the provider as a major national outlier for that specific procedure. Other notable Medicare contributors are 99212 ($38.3K, 7.1% of Medicare revenue, rank #344 of 99011, 100th percentile, another extreme outlier) and 92004 ($35.9K, 6.7% of Medicare revenue, rank #417 of 26467, 98th percentile, notably above typical volume). The overall code mix—high volumes of 68761 and substantial activity in evaluation and management (99212, 99213) and ophthalmologic exams (92004, 92014, 92250)—suggests a practice model that combines a high procedural focus on lacrimal punctal occlusion with routine eye exams and diagnostic imaging, implying a mixed clinical workflow of procedural interventions and ambulatory visits. Competitive standing is specialized: for several high-impact codes this provider is in the top percentiles nationally (100th percentile for 68761 and 99212; 98th percentile for 92250 and 92004), indicating outsized concentration and likely regional or niche dominance in punctal plug procedures compared with peers. From a payer or network strategy perspective, the extreme skew toward a single procedure (68761) creates both revenue dependence and negotiation leverage tied to that service line; monitors should note that policy or reimbursement changes affecting that code would disproportionately impact this provider's Medicare revenue.