Quick answer: A neurology practice isn’t one business — it’s usually three to five. Office visits, EMG/EEG and other diagnostics, infusion, procedures, and sometimes physical therapy each earn money differently, get denied differently, and carry very different margins. If your books lump them into one revenue line, you can’t see which parts of the practice actually make money — and if nobody reconciles the billing system to the bank, even the total is a guess.
Why neurology books are harder than they look
On paper, a neurology or neurosurgery practice looks like any professional office: see patients, bill insurance, collect. In the books, it behaves differently:
- Multiple service lines under one roof. Evaluation and management (E/M) visits, electrodiagnostics (EMG/NCS, EEG), botulinum toxin and other procedures, infusion services, imaging in some groups, and in a growing number of practices, physical therapy. Each line has its own payer behavior and cost structure.
- Prior-authorization exposure. Infusion drugs, advanced imaging, and some diagnostics live and die on prior auth. A busy front desk that misses one authorization can produce a five-figure denial that never gets worked — and books that record only deposits will never surface it.
- Buy-and-bill drug economics. Practices that infuse buy expensive drugs, carry them as inventory, and get reimbursed per administration. The margin between drug cost and reimbursement is real money, but only if the books track drug cost against infusion revenue instead of burying it in “medical supplies.”
- Global periods on the surgical side. Neurosurgery revenue arrives as large, lumpy case payments that cover 90 days of care. Cash-basis books make a heavy surgical month look brilliant and the follow-up months look broke, when really it’s one episode of care.
- Therapy revenue rules of its own. Where the practice runs PT — common in neuro and spine groups — revenue depends on visits actually completed against a plan of care, therapist productivity, and payer visit limits. Per-visit economics are nothing like E/M economics.
The service-line P&L: the report most neurology practices are missing
The single most useful change we make for a multi-line practice is restructuring the books so the P&L answers the question owners actually ask: where do we make our money? That means revenue and direct costs broken out by line:
- Office visits (E/M) — physician and midlevel visit revenue, with provider-level detail.
- Diagnostics — EMG/NCS and EEG revenue against tech time and equipment costs.
- Infusion — administration revenue and drug reimbursement against drug purchases, chair time, and nursing labor. This is where buy-and-bill margins become visible.
- Procedures — botulinum toxin, injections, and on the surgical side, case revenue.
- Physical therapy — visit revenue against therapist compensation and space, tracked per visit. (Our guide to physical therapy practice accounting covers this line in depth.)
With that structure, questions like “should we add a second infusion chair,” “is the EEG lab paying for itself,” and “what did adding PT actually contribute” stop being debates and become line items.
Does your billing system agree with your bank?
Every neurology practice runs on a billing or practice-management system, and most owners assume its reports are the truth. The test is simple: take last month’s charges, subtract contractual adjustments and write-offs, compare payments posted to actual bank deposits, and check whether the change in A/R explains the difference. In many practices it doesn’t — payments posted to the wrong month, denials sitting unworked in a queue nobody reconciles, patient refunds and merchant fees netted invisibly out of deposits. We walk through the full method in our guide to medical A/R and billing reconciliation; the short version is that until billing system, A/R, collections, and QuickBooks tie, your profit number is an estimate.
What to watch: the numbers that run a neuro practice
- Days in A/R — overall and for infusion and diagnostics separately, since prior-auth services age differently.
- Net collection rate — collections against what payers actually allow, by service line. A strong E/M line can hide an infusion line quietly leaking to underpayments.
- Denial rate on prior-auth services — the earliest warning that front-end process is slipping.
- Drug margin per infusion — reimbursement minus drug cost, tracked monthly; one payer’s reimbursement change can flip a chair from profitable to not.
- Revenue per provider and per therapist — with midlevels and PT staff measured on their own economics, not blended into physician numbers.
These sit alongside the standard scorecard every practice should run — see our roundup of medical practice KPIs.
Common mistakes we see in neurology and neurosurgery books
- Recording deposits as revenue. Denials, underpayments, and posting errors disappear into a number that “looks fine.”
- Drug purchases buried in supplies. The practice’s second-largest cost ends up invisible, and infusion margin is unknowable.
- One revenue line for everything. Surgical case payments, EMG revenue, and PT visits blended so nothing can be managed.
- Write-offs that “just happen.” Contractual adjustments taken in bulk, never reviewed, so nobody notices when a payer’s effective rates drift down.
- No monthly tie-out. The billing company reports one number, QuickBooks shows another, and the difference is never explained — month after month.
Frequently asked questions
What makes neurology practice accounting different from general bookkeeping?
Multiple service lines with different margins (E/M, diagnostics, infusion, procedures, therapy), heavy prior-authorization and denial exposure, buy-and-bill drug inventory, and — on the neurosurgery side — global periods that make cash timing misleading. Generic books record deposits; a neuro practice needs revenue reconciled by service line.
How should a neurology practice account for infusion drugs?
Track drug purchases as their own cost category (or inventory, for larger programs) and match them against infusion revenue so the margin per administration is visible. Burying drug spend in supplies hides one of the practice’s biggest financial levers.
We also run physical therapy. Should it be in the same P&L?
Same company, separate service line. PT has per-visit economics — therapist productivity, visit limits, plan-of-care rules — that need their own revenue and cost tracking to know whether the line is actually profitable.
How do I know if our billing company’s reports are right?
Reconcile them: charges minus adjustments should explain net revenue, payments posted should tie to bank deposits, and the change in A/R should explain the rest. If those don’t tie, the reports are describing a different practice than your bank account is.
Financials that keep up with a multi-line practice
Precision Accounting & Consulting’s medical practice accounting group works with neurology, neurosurgery, and other specialty practices across New York — building service-line P&Ls, reconciling billing systems to the bank and to QuickBooks, and reporting provider-level profitability owners can act on. If your practice runs more than one revenue line and your books treat it as one, we should talk.
This article is for general informational purposes only and does not constitute tax, legal, or accounting advice. Consult a qualified professional about your specific situation.
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