Who uses Arca, and what for.
Arca is one system. What it is used for depends on who holds the risk for a cancer patient's care: the oncology group, the health plan, the employer, or the cancer program.
An oncology group sees every enrolled patient against the plan.
In Medicare's Enhancing Oncology Model, a practice receives a monthly coordination payment for each enrolled patient, $110 in 2025, and shares in the savings when its episodes cost less than its own history.
Arca shows the group every enrolled patient against the plan each morning: who has a care plan, who has been in touch with the care team, who is behind, and who owns each open gap.
CMS, Enhancing Oncology Model, 2025 payment rates.
The care manager has it the same evening, with the plan and the missed cycle attached, and the step closes when the rebooked infusion is documented.
The oncology nurse gets a follow-up due within 48 hours. Over a quarter, the visits group by regimen and site, so the program can see where they cluster.
Care plans, time to treatment, and gaps closed on time, counted from each patient's actual care, ready for the group's own review and its health plan contracts.
A health plan sees the months between the authorization and the claim.
For a health plan, the prior authorization is often the only moment it sees a cancer episode. The costly part comes after: emergency visits and admissions during treatment, which reach the plan as claims months later.
When oncology is delegated to a network that runs on Arca, the plan sees the episode on either side of the request, while there is still time to act. The practice keeps the clinical decisions.
Perrin et al., JCO Clinical Cancer Informatics, 2025 (2,922 patients). Alishahi Tabriz et al., JAMA Network Open, 2023.
The network's patients are on Arca from the referral, with the treatment plan and its pathway status recorded when the oncologist decides.
The request arrives with the pathway status and the evidence attached, so fewer go back and forth.
Treatment starts, open care gaps, and pathway adherence by practice, while treatment is under way and months before the claims.
An employer sees its largest health cost early.
Cancer has been the top condition driving employer health costs for five years running, and the employer usually learns about a case from the first treatment bill.
Through your plan administrator, Arca gives the benefits team a quarterly population view of members in cancer treatment.
How many, and how quickly their treatment started, reported at the population level through your administrator.
The share of members whose treatment is concordant with current guidelines, by quarter.
Where emergency visits and admissions during treatment occur, and how quickly each was followed up.
A cancer program runs its boards and its survey from the same lists.
Boards, navigation, and accreditation evidence come from one record, so the follow-through on every recommendation is visible and the survey evidence is already assembled.
A new diagnosis with no board date after seven days goes on the coordinator's list, oldest first, until a board has it.
Each recommendation becomes tasks with owners and due dates, on the navigator's list and the chair's program view until done.
Presentations, the prospective share, and navigation tasks are on record for the period, and each abstract starts with the coordination fields filled.
What changes for each person on the team.
Care manager
Works from admission alerts and a phone list.
Their own task list, with the plan and the missing step attached and a due date on each.
Nurse navigator
Tracks each patient's plan in a personal spreadsheet.
One list across clinics and boards, with overdue steps flagged.
Medical oncologist
Gathers pathology, imaging, and outside records from several systems.
A current summary of each patient, pathway status, and the decisions waiting for them.
Practice or service-line leader
Learns about delays from the quarterly report, after the quarter.
Time to treatment and open gaps by site, current every morning.
Health plan medical director
Sees the episode at the authorization and again in the claims.
Requests that arrive with evidence, and pathway status in between.
Benefits leader
Learns about a case from the first treatment bill.
A population view through the plan administrator, each quarter.
Tumor board coordinator
Chases reports the week of the meeting and builds the agenda by hand.
An agenda that fills from cases whose workup is complete, with missing items named days ahead.
Registrar and accreditation lead
Reconstructs decisions from minutes before each survey.
The decision as recorded at the meeting, and the survey evidence as an export.
Tell us where your oncology risk sits.
Which contracts, which sites, and who manages the follow-through today. We reply within two business days with how Arca would run alongside them, starting with one program.