The plaintiff personal injury bar runs on a small group of doctors who treat on lien. The right ones make a case. The wrong ones tank it. After eighteen years of running PI files, I can say with confidence that the difference between a $250,000 settlement and a $90,000 settlement often turns less on liability or carrier identity than on which doctor wrote the chart.
This checklist is the one I wish someone had handed me my first year. It is not exhaustive, and it is not a substitute for relationships built over time. It is the floor — the questions you should be able to answer about every doctor-on-lien provider you send a client to, before you send a single intake form their direction.
Why vetting matters more than provider availability
A plaintiff lawyer who is willing to send any unrepresented client to any provider with an open schedule is a lawyer who will eventually settle a case for forty cents on the dollar. The carrier knows which providers in your county bill aggressively for services thinly documented. So does the defense bar. So does the mediator. So does the trier of fact when the bills come into evidence at trial.
For a primer on how medical liens actually function in California settlement math, see our explainer on the mechanics — and for the closely related but distinct instrument, see letters of protection versus medical liens. The vetting work below assumes that baseline.
The eight questions
Each of these is a question you should be able to answer with documentary evidence, not a hunch, before a provider goes on your referral short-list.
1. What is the provider's actual licensure status?
Pull the Medical Board of California, BPPE, or Chiropractic Board record — whichever applies. Look for active license, no probation, no public discipline, no pending accusations. If the provider is an MD, also check the National Practitioner Data Bank if you have access via a co-counsel relationship. A clean license is the floor, not a feature.
2. Who actually owns the practice?
California's corporate-practice-of-medicine doctrine still applies. A practice that is owned, in substance, by a non-physician marketing company is a practice that will create credentialing problems when the defense subpoenas business records. Ask for the Statement of Information from the Secretary of State. Look at the officer and member lines. A non-clinician CEO of a single-doctor PC is a flag worth chasing down.
3. How are bills generated and what do they look like?
Ask for two redacted sample bills from real PI cases — one for an early-treatment visit, one for a procedure. Compare the CPT codes, units, and dollar amounts to the Medicare allowable for the same code in the same zip code. A practice that bills at five to seven times Medicare on routine evaluation-and-management is going to face Howell exposure that will compress your damages model. A practice that bills at twenty to thirty times Medicare for the same code is going to face a Pebley admissibility fight you may not win.
4. Does the provider testify at deposition and trial?
The provider who will not appear is a provider whose chart goes in as paper without the explanation the trier of fact needs to attach value to it. Ask about the provider's deposition frequency, trial appearances in the last three years, and CME completed in personal injury or causation testimony. A provider who has never been deposed at all is a provider who has never been cross-examined — which means you do not yet know what the cross looks like.
5. What does the documentation read like?
Pull three to five complete records from PI matters the provider has closed. Read them. Are the histories specific to the patient and the mechanism of injury, or are they templated? Do the impressions tie the diagnosis to the trauma, or do they list a string of codes? Does the plan progress over time, or does every visit say the same thing? A chart that reads like a chart is a chart that survives cross. A chart that reads like a billing document is a chart the defense will weaponize.
6. What is the provider's lien-write-down history?
Every lien-treating provider eventually faces a settlement that will not cover full billed charges. The question is what they do about it. A provider who routinely reduces bills at the end of a case to keep the deal whole is a provider you can build a practice around. A provider who insists on full charges out of every settlement, regardless of the recovery, is a provider whose name on your charts is a liability. Ask other plaintiff lawyers in your county for honest answers on this. The reputation is well-known inside the bar.
7. What happens to your client if the case loses?
Some lien providers genuinely walk if the case does not produce a recovery. Many do not. Their post-settlement collection practices range from quiet write-offs to aggressive credit-bureau reporting. Ask the practice manager directly: what happens to a patient with no recovery? Get the answer in writing if you can. Your client will ask you this question eventually, and you should not have to guess.
8. Is the provider on the directory of vetted, lien-friendly, plaintiff-aligned medical practices that the rest of the bar has already evaluated?
This is the shortest path. The whole point of our directory is that someone has already done questions one through seven for you. Every listed provider has cleared licensure, ownership, billing-pattern review, deposition history, and lien-write-down norms. If a provider you are considering is not in the directory, that is not by itself a disqualifier — but it is a reason to ask why, and to do the work yourself.
What this checklist will not tell you
Three things vetting cannot replace, and that I want to name directly:
Bedside manner — A provider can pass all eight questions and still treat your client like a case number. The first time a client calls your paralegal to complain about how a treating physician spoke to them, the relationship is over regardless of the chart quality. Sit in the waiting room. Watch how the front desk interacts with people.
Clinical outcomes — A provider whose patients consistently improve is a different kind of asset than a provider whose patients consistently accumulate appointments. The improvement provider will produce a better narrative arc on damages and a more defensible recovery. The accumulation provider will produce a bigger bill that gets cut hard at trial.
Cross-coverage — A solo provider who goes on vacation, gets sick, or retires creates an immediate problem for every open file with their name on the chart. Practices with two or three credentialed providers and a continuity-of-care policy are stable; one-doctor practices are case-specific risk.
The intake-side workflow this enables
Once the short list is in place, the intake side gets simpler. The paralegal does not have to ask the lawyer who treats which client. The standing referral matrix is by injury type and geography. New providers come onto the list only after the eight questions are answered. Existing providers come off the list when the answers change. The carrier-facing posture is consistent, the documentation pattern is predictable, and the lien negotiations at settlement are not surprising.
For the broader treatment-pipeline view from the firm side, see building a lien portfolio — the operational layer that sits underneath this referral list. For the firm-finance implications of running a practice on lien-based cases, the cash-flow piece in this series covers the working-capital math.
A note on the gentleman's agreement
The doctor-on-lien practice rests on a soft contract among plaintiff lawyers, treating providers, and ultimately carriers and defense counsel. The contract holds only because each side keeps its end. Plaintiff lawyers do not refer to providers who bill at the ceiling and refuse to reduce. Providers do not chase patients on cases that did not pay. Carriers eventually accept the legitimacy of the medical specials when the documentation supports them. When any one of those breaks down, the whole arrangement gets harder.
Vetting protects the arrangement. It is the cheapest insurance available against the kind of provider who turns one bad case into a reputation problem that follows the firm for years.