HARBORVIEW MEDICAL CENTER is effectively a Medicaid-focused facility in the available claims data, reporting no Medicare billing on file and $128.2M in lifetime Medicaid revenue; this makes its payer profile single-payer dominated (Medicaid) in the observed dataset. The provider’s NPI has been enumerated since 2006-06-03 (~20 years), indicating long-standing participation in public programs and an established operational footprint. The provider shows very high revenue concentration in a small set of outpatient clinic and infusion/ED services: the precomputed top 3 Medicaid codes by revenue account for 57.2% of total Medicaid revenue, indicating reliance on a few high-volume service lines for the majority of Medicaid receipts. G0463 is the single largest revenue driver on Medicaid with $45.3M (47.1% of Medicaid revenue) and 558.7K claims; the provider ranks #1 of 103 in-state and is described as an extreme outlier, signaling a dominant role in hospital outpatient clinic assessment and management visits relative to peers. Emergency department evaluation and management codes (99285, 99284, 99283, 99282) collectively appear as major volume contributors across the top codes list, with 99285 producing $4.5M (4.7%) and high statewide ranks (e.g., 94th percentile); this mix implies a significant ED and acute-care throughput component to the provider’s Medicaid business. High-volume infusion and oncology/immunotherapy-associated codes also contribute meaningfully: 96361 ($5.1M, 5.3%) and J1745 ($2.6M, 2.7%) rank above typical state volumes for their code groups, suggesting an active infusion/biologic treatment program and notable specialty drug administration under Medicaid. Several codes show facility-level leadership in niche services: T2022 (case management, $4M, 4.2%) ranks #1 of 15 and 99281 (lowest-level ED, $1.1M, 1.2%) ranks #1 of 76, both flagged as notably above typical volume or extreme outliers, indicating the provider is a primary state resource for case management and high-volume triage/low-acuity ED visits. Imaging and diagnostic procedures (70450 CT head $2.7M, 74177 CT abdomen/pelvis $1.4M, 71275 CTA chest $1M) are present among top Medicaid revenue codes and rank in high percentiles statewide, supporting that Harborview operates substantial radiology capacity tied to its emergency and outpatient clinic services. Several high-cost drug and device-related codes rank near the top in-state (e.g., J1745 rank #2 of 21; Q5103 rank #3 of 8; 20680 rank #1 of 7), indicating the facility handles significant specialty therapeutics and post-operative device management relative to other Washington providers. Overall, the combination of an extreme outpatient clinic visit volume (G0463), strong ED throughput, and elevated infusion/behavioral health case-management claims portrays Harborview as a large, centralized acute-care and safety-net provider for Medicaid beneficiaries in Washington, with concentrated revenue streams centered on outpatient clinic encounters and high-volume emergency and infusion services.