Payer credentialing — getting a newly hired clinician approved to bill under the practice's insurance contracts — takes 60 to 120 days with most commercial payers and longer with some government programs. During that window the clinician can see self-pay clients and, where payer rules allow, clients under supervised billing, but for most insured clients the sessions cannot be billed. The clinician is on payroll. The revenue is not there.
Worked example
A group hires four salaried clinicians in a year, each at $8,300 a month fully loaded. Credentialing runs 40 days for its fastest commercial payer, 75 days for its largest, and 110 days for Medicaid managed care. Insured sessions are 75 percent of the group's mix.
| Month after start | Billable payer share | Completed sessions | Revenue | Cost | Gap |
|---|---|---|---|---|---|
| 1 | Self-pay only (25%) | 28 | $4,620 | $8,300 | −$3,680 |
| 2 | + Commercial A (59%) | 52 | $6,210 | $8,300 | −$2,090 |
| 3 | + Commercial B (81%) | 74 | $8,290 | $8,300 | ≈ $0 |
| 4 | All payers (100%) | 92 | $10,300 | $8,300 | +$2,000 |
Illustrative figures for a hypothetical practice; not a client's data.
Each hire costs roughly $5,800 in unrecovered salary during the credentialing window and, more significantly, forgoes about $14,000 of revenue the calendar could have produced if it were fully billable from day one. Across four hires, that is $80,000 of cash the practice needs to have available — a working-capital requirement most groups never budget. If the start date had been set 45 days after offer acceptance, with applications submitted on acceptance, the month-1 and month-2 gaps largely disappear.
The failure modes
- Start date set before applications are submitted, so the clock starts late.
- Incomplete applications bounced by the payer, adding weeks per cycle.
- No tracking by payer, so sessions are scheduled with payers that will deny.
- Clinician moved between locations or entities without re-credentialing where required.
- No fallback plan for the gap: the clinician sits at 20 percent utilization for a quarter.
Plan hiring around the timeline
Submit applications the day the offer is accepted. Set the start date with the expected window in mind — 30 to 45 days after acceptance shrinks the unbillable period materially. Build a credentialing tracker by clinician and payer with submission date, status, follow-up date, and effective date, and reconcile it to the scheduling system so intake routes only credentialed payers to each clinician.
Fill the gap deliberately
Direct self-pay and out-of-network clients to the new clinician. Use the time for onboarding and required supervision hours. Where payer contracts and state rules permit supervised billing under an already-credentialed clinician, use it — with a precise understanding of each payer's rules, because the compliance risk of getting that wrong is significant. Where the gap cannot be filled, budget the cost explicitly.
What we would do in the first 30 days
- Reconstruct actual credentialing timelines by payer from the last eight hires.
- Build the credentialing tracker and link it to intake routing so uncredentialed payer-clinician pairs cannot be scheduled.
- Redesign the offer-to-start sequence: applications on acceptance, start date set against the payer timeline.
- Add the credentialing lag as an explicit assumption to the hiring plan, the cash forecast, and any expansion model.
- Confirm with counsel and each payer's rules which supervised-billing arrangements are permitted, and document them.