Payer Enrollment Guide for New Practices
The Enrollment Sequence That Protects Your Launch
New practice enrollment fails when steps run out of order. The correct sequence: (1) entity + EIN, (2) NPIs registered with accurate taxonomy and address, (3) malpractice bound naming the new entity, (4) CAQH ProView completed and attested, (5) Medicare 855I/855B/855R filed together, (6) state Medicaid submitted, (7) all commercial payers simultaneously. Each step gates the next — CAQH cannot complete without malpractice documents; Medicare rejects applications whose addresses mismatch NPPES.
Timelines and the Cost of Waiting
With simultaneous submission: 90-120 days total (your slowest payer). Sequential: 9-12 months. Every month of delay defers your full insurance revenue for that month — the single most expensive new-practice mistake is starting credentialing at opening instead of at entity formation. Realistic per-payer windows: Medicare 45-90 days, Medicaid 30-90 (state-dependent), commercial 60-95, MBHOs 45-90 running parallel.
The Five Errors That Restart Clocks
(1) NPPES address mismatches, (2) missing 855R reassignment for group billing, (3) unauthorized payers in CAQH, (4) work-history gaps unexplained, (5) no follow-up — unworked applications sit in queues. Tools: 50-point launch checklist | timeline calculator | done-for-you setup | free consultation.