Payer credentialing for a new physician takes 90 to 120 days while a working ophthalmologist generates $30,000 to $60,000 a month, which puts the gap between signing your contract and getting paid for your own work at up to $180,000.

Nobody teaches this in residency or mentions it in fellowship, and it shows up in no negotiation guide handed to graduating physicians, so most young ophthalmologists find out the same way, standing in a fully equipped clinic, fully licensed and fully trained, unable to bill a single insurer for the patient in the chair.

This is the warning that should have come with your diploma.

What Credentialing Actually Is for a New Ophthalmologist

Credentialing is how every payer you intend to bill verifies that you're who you say you are, and Medicare, every Medicare Advantage plan, every commercial insurer, and every Medicaid managed care organization runs its own version, mostly in parallel and entirely on its own clock.

Each one verifies medical school, residency, fellowship, licensure, malpractice history, hospital privileges, and work history, then routes your file to a credentialing committee that might meet once a month. After credentialing comes contracting, where the payer loads you into the network and assigns the fee schedule you'll actually be paid under, so the finish line is the day claims under your name get paid rather than the day a payer says yes, and those 2 dates can sit weeks apart.

Most payers land inside that window, with Medicare through PECOS often clearing in 60 to 90 days while some large commercial plans stretch to 5 and even 7 months. The clock on each one starts when your complete application lands, and completeness is judged by them, so one missing peer reference, one unexplained gap month, or one expired attestation sends your file quietly back to the bottom of a stack nobody is watching.

Why the Gap Costs an Ophthalmology Practice So Much

The economics are simple and brutal. Your employer starts paying salary on your start date, payers start paying for your work when credentialing and contracting finish, and everything you produce in between lands in a gray zone with 3 possible outcomes.

The first is that claims get held and billed retroactively once your effective date is assigned. Some payers permit this and commonly cap it at 30 to 90 days, so anything performed before the cap becomes permanently unbillable.

The second is that your work gets billed under a supervising physician's number, which is tightly regulated, frequently done incorrectly, and a compliance exposure when it's done wrong. It works as a bridge rather than a plan, and it's the kind of bridge that shows up in audits.

The third outcome is the most common one in a badly planned start, which is that the revenue simply evaporates while the practice pays a surgeon market compensation for months and collects nothing for that surgeon's production. At subspecialist volumes the 90 day version of that gap runs $90,000 to $180,000, and the 5 month version runs well past $250,000.

Practices know this number cold even when candidates have never heard it, and that asymmetry is the whole reason this article exists.

The Credentialing Calendar No Ophthalmologist Gets Handed

The entire problem compresses into one sentence, which is that credentialing starts the day you sign rather than the day you arrive. Physicians who cross the gap cleanly all run the same play, and it's less complicated than it is early.

Medicare goes first, because its 60 to 90 day window is the fastest of the major payers and because several commercial plans won't complete their own review until Medicare enrollment is confirmed. Every commercial application follows in the same week, filed in parallel rather than in sequence, since nothing about one payer's review depends on another's.

Your CAQH profile, the central database most commercial payers pull from, gets built completely and then re attested every 90 to 120 days without exception, because a stale attestation stalls every application that references it, which is most of them. Hospital privileges and surgery center credentialing run on separate committee calendars and start just as early, since an ophthalmologist who can bill but can't operate isn't much better off.

And one specific named person owns the follow up, calling every payer every 2 weeks. That means a person whose name you know rather than a department or a vendor you assume is handling it, because files nobody calls about are files nobody moves.

A physician who starts this machine at signing, 4 to 6 months ahead of the first clinic day, walks in billable, while a physician who starts it at orientation donates a quarter of a year's production to nothing.

What to Ask Before You Sign an Ophthalmology Contract

Once you understand the calendar, 3 questions become obvious, and asking them signals more sophistication than any salary demand you could make.

Ask who runs credentialing and when it begins. The answer you want names a credentialing coordinator or an outsourced service that starts the week you sign, and the answer that should worry you is any version of the office manager handles it once you get here.

Ask how the practice treats the gap financially. A practice that starts your production guarantee on your start date, having never begun the paperwork, is asking you to be unproductive on their clock and may quietly hold it against you at your first review, while fair versions either start early enough that the gap barely exists or acknowledge the ramp explicitly in how your first year targets are written.

Ask what happens when a payer runs long. Some markets have one dominant insurer whose committee meets rarely and everyone local knows which one, so a start date can move, a locum arrangement can extend, or a signing bonus can be structured to bridge a delay everyone saw coming. Locum coverage runs roughly $1,500 to $1,600 a day, which is the literal price a practice pays for every day the calendar got ignored.

If You're an Ophthalmologist Already Inside the Gap

Plenty of physicians read this while sitting in the middle of it, 30 days into a job with 3 payers still pending, and the situation is recoverable in a specific order.

Get the actual status of every payer in writing rather than verbally, with a date and a named contact for each, because half the time a file everyone assumed was submitted was never submitted at all, or bounced on something trivial nobody escalated.

Find out which payers permit retroactive billing and what their cap is, since that number determines which of your current patients are billable later and which are permanently free care, then triage your schedule accordingly by loading the payers you're already credentialed with into the front of your clinic and pushing elective work with pending payers as far right as the calendar allows.

Finally, have a direct conversation with whoever wrote your compensation guarantee. A practice that failed to start credentialing on time created this problem, and a reasonable one will adjust the ramp rather than let a preventable administrative failure follow you into a performance review.

The Ophthalmology Practice Owner's Version

Everything above applies double to a physician stepping into ownership, because an owner absorbs both halves of the gap, the compensation going out and the collections not coming in, with no employer to eat it.

That's precisely why acquisition structures that put a management company underneath the physician exist. Credentialing, payer follow up, CAQH maintenance, and enrollment sequencing are exactly the category of work that should never depend on a surgeon's spare attention at 9pm, and in a well built transition they start months before the physician's first day, run by people who do nothing else all week, so the new owner walks into a practice already positioned to pay him.

The 120 day gap is the measurable cost of starting late, it's entirely predictable, and predictable problems are plannable ones.

Medicine trains physicians to master everything that happens inside the exam room and nothing that happens between a signed contract and a paid claim, and the doctors who close that gap in their own education keep six figures the doctors who don't will never see. Sign early, file everything the same week, call every payer every 2 weeks, and you get paid from your first day in clinic.

Educational material only. Figures are illustrative and individual results vary. Images are AI-generated illustrations and don't depict actual Verdira practices, physicians, or patients. See our Disclosures.