How outpatient surgery on lien works at a California ASC.

How medical-lien cases work at an ambulatory surgery center

A medical lien is a written agreement under which a healthcare provider renders care with payment deferred until the patient’s third-party personal-injury claim resolves. At an ambulatory surgery center, the mechanics break down like this:

• Referral and lien packet. The attorney refers the client; the facility sends a lien packet containing the lien instrument, an assignment of benefits, a HIPAA authorization, and standard intake paperwork. Nothing proceeds to scheduling until signatures are returned.
• Medical-necessity review. The credentialed surgeon evaluates the client. If surgical care is medically appropriate, the case proceeds. If it is not, the case is declined — lien acceptance does not substitute for indication.
• Care delivered under the lien. Services are provided at the same standard as insured cases. The facility, surgeon, anesthesia provider, and any pathology lab each bill separately — each has its own lien or billing relationship.
• Documentation produced contemporaneously. Operative reports, anesthesia records, and facility bills are generated in the ordinary course. Narrative reports and causation opinions are produced by the treating physician on attorney request.
• Settlement and payoff. At settlement, the attorney coordinates payoff from the trust account. Reductions are negotiated in good faith against the facts of the case — liability, policy limits, comparative fault, available med-pay — and the facility releases the lien on payment.

An ASC lien case differs from an in-office physician’s lien in one structural way: the facility charges sit alongside the professional charges, not inside them. That distinction matters for how priorities are negotiated at settlement, and it’s worth getting right early in the case.

Cal. Civ. Code § 3045.1 — the California physician’s lien

California’s statutory physician’s lien lives in Cal. Civ. Code §§ 3045.1 through 3045.6. In summary — not as legal advice — the statute works as follows:

• § 3045.1 — What the lien covers. Every physician, dentist, optometrist, chiropractor, certain hospitals, and other enumerated providers have a lien upon any sum awarded, by judgment or obtained by settlement or compromise, on any claim by an injured person for reasonable and necessary medical services rendered to that person for the injuries giving rise to the claim.
• § 3045.2 — Perfection by written notice. The lien is perfected by the provider serving written notice on the person against whom the claim is asserted (typically the defendant or the defendant’s liability carrier) and on the injured person or their attorney. The notice must state the amount claimed, the dates of service, and the provider’s name and address.
• § 3045.3 — Priority and payment obligation. Once notice is served, a defendant or insurer who pays the claim without first paying the lien can be held liable to the provider for the lesser of the lien amount or the amount paid, subject to the statute’s allocation rules.
• § 3045.4 — Attorney fees and costs first. The lien is subject to the patient’s reasonable attorney fees and costs, which are paid before the physician’s lien.
• § 3045.5 and § 3045.6 — Exclusions and interaction with other liens. The statute contains carve-outs and interaction rules with Medi-Cal, hospital liens under Civ. Code § 3045.1 versus § 3040 (health plan reimbursement), and other statutory frameworks.

Two practical notes for referring attorneys. First, the statutory physician’s lien is distinct from any contractual facility lien signed at intake — they can coexist, and they’re priced and negotiated separately. Second, compliance with the written-notice requirement is what makes the lien enforceable against the carrier. Missed notice doesn’t void the contractual lien between provider and patient, but it can take the statutory teeth out of the claim against a non-paying defendant.

The summary above is informational. Statutory language controls; consult counsel and the current Civil Code text for case-specific questions.

ASC liens vs. physician liens — what actually bills and under what instrument

A common source of confusion at settlement is which charges are covered by which lien. At a surgical episode performed at DOSC, up to four separate billing relationships can exist for a single case:

• Facility charges (OR time, nursing, supplies, recovery, implants) — billed by the ambulatory surgery center under the facility lien instrument signed at intake. This is contractual, not § 3045.1.
• Surgeon’s professional fee — billed by the operating surgeon’s practice. If the surgeon uses a physician’s lien, that’s the § 3045.1 instrument, served by the surgeon’s office.
• Anesthesia professional fee — billed by the anesthesia group separately, under whatever lien or billing arrangement that group uses.
• Pathology / lab fee (when applicable) — billed by the pathology lab that processes specimens.

For an attorney negotiating at settlement, this means the total “surgery bill” isn’t a single number to reduce — it’s a stack, and each layer negotiates on its own terms. DOSC’s lien resolution team handles only the facility portion. Working the professional fees is a separate conversation with the surgeon’s office and the anesthesia group.

Procedures performed at DOSC on medical lien

Procedures offered on lien are the same as those offered to insured patients — no separate “lien-only” menu. Credentialed, board-certified surgeons operate in accredited ORs with full anesthesia support.

• Interventional pain management — epidural steroid injections, medial branch blocks, radiofrequency ablation (rhizotomy), SI joint injections, occipital nerve blocks, genicular nerve RFA, and kyphoplasty. See the Pain Management page for the full procedure list.
• Orthopedic surgery — arthroscopy, joint preservation, hand & upper extremity, sports-injury repair.
• Spine procedures — select minimally-invasive decompressions and kyphoplasty where appropriate for the outpatient setting.
• Podiatry — post-traumatic foot & ankle reconstruction.
• General surgery — select outpatient cases including hernia repair.

Procedure availability depends on credentialed-surgeon coverage, equipment requirements, and case-by-case medical appropriateness.

Documentation timeline — from referral through settlement

A realistic working timeline for an ASC lien case, for attorneys coordinating internal workflow:

1. Day 0 — Referral received. Attorney sends the client’s demographics, date of loss, brief injury summary, available imaging, and any MedPay or UM/UIM coverage information. Lien packet sent back the same business day in most cases.
2. Days 1–5 — Intake. Signed lien, assignment of benefits, and HIPAA authorization returned; scheduling team confirms the surgeon and procedure room availability.
3. Days 5–21 — Evaluation and workup. Surgical consult, imaging review, pre-op labs/EKG where indicated, medical-necessity determination.
4. Procedure day — surgery. Operative report dictated same day, typically finalized within 24–48 hours.
5. Within 7 business days post-op — documentation package. Operative report, anesthesia record, facility itemized bill, implant/supply log (if applicable) released to the attorney on request.
6. Narrative reports — on demand. Treating-physician narrative addressing causation, medical necessity, and future care is available from the surgeon’s office. Typical turnaround: 2–4 weeks depending on the physician.
7. Settlement resolution — when the case resolves. Attorney transmits settlement disclosure and good-faith reduction request; facility responds with a negotiated payoff; funds disbursed from trust account and the lien is released.

Records requests during active litigation are answered within 1–3 business days standard; subpoena duces tecum requests are processed within the statutory timeline. Expedited turnaround is available on reasonable notice for MSC, trial, or mediation deadlines.

Depositions, IMEs, and records authentication — who does what

Three distinct roles show up in lien-case discovery, and it helps to separate them up front:

• Treating physician — the operating surgeon. Provides treating-physician testimony on the diagnosis, the procedure performed, and the medical record. Deposition, IME (on the defense’s request where appropriate), and trial testimony arranged through the surgeon’s office on standard terms. Expert opinion beyond the treating record is a separate engagement.
• Records custodian — DOSC staff. Available for authentication testimony on the facility record and chain-of-custody questions. The facility responds to properly served subpoenas and to informal records requests from retaining counsel; the custodian declaration generally obviates the need for a live deposition in most cases.
• Independent Medical Examiner (IME). Selected and retained by the party requesting the exam. DOSC’s role in an IME is limited to producing records and, where noticed, making the treating surgeon available on a reasonable schedule.

For depo/IME scheduling, please give the surgeon’s office and the facility at least 30 days’ notice where possible. Emergency notices are accommodated on best-efforts basis.

Conditions commonly seen in referred cases

For reference — the clinical picture most often presented to DOSC for surgical evaluation on lien:

• Lumbar and cervical radiculopathy; post-traumatic disc herniation
• Facet-mediated axial pain, including whiplash-associated facet injury
• Sacroiliac joint dysfunction
• Post-traumatic and cervicogenic headache; occipital neuralgia
• Rotator cuff and labral shoulder injuries
• Meniscal, ligamentous, and post-traumatic knee injuries
• Wrist, hand, foot, and ankle injuries
• Vertebral compression fractures amenable to kyphoplasty

What makes a case referable to DOSC

Not every referred case is accepted. The facility’s review generally weighs four questions:

• Is there a medically appropriate outpatient surgical indication? Lien acceptance does not substitute for medical necessity. The credentialed surgeon’s clinical judgment controls.
• Is there attorney representation on the lien instrument? DOSC accepts lien cases where the client is represented and the attorney signs the customary letter of protection / lien acknowledgment.
• Do the liability and coverage facts support a reasonable expectation of recovery? Policy limits, liability exposure, comparative fault, and available MedPay/UM/UIM all factor in. This is not a guarantee — it’s a threshold of reasonableness.
• Is the case within DOSC’s scope? Outpatient-appropriate procedures performed by credentialed surgeons, in specialties the facility supports.

Cases that don’t meet these thresholds are declined at intake. Honest declination at the start is more useful to everyone than a case that can’t be completed on lien terms.

Service area

DOSC accepts lien referrals throughout Southern California. The facility sits in the Southeast LA corridor and most clients travel from: Downey, Bellflower, Norwalk, Pico Rivera, Bell Gardens, South Gate, Whittier, Santa Fe Springs, Paramount, Long Beach, Lakewood, Cerritos, Compton, and surrounding Los Angeles County communities. Referrals from the San Fernando Valley, Inland Empire (San Bernardino and Riverside counties), Orange County, Ventura County, and Kern County are equally welcome.

Contact — Lien Intake

Lien intake at DOSC is handled by a dedicated coordinator. For a referral: email the client’s demographics, date of loss, and a short injury summary to the lien intake address below — acknowledgment within one business day.

This page is provided for attorneys, case managers, and patient-intake staff. Nothing here is legal advice. Each case is evaluated individually; lien acceptance is not guaranteed and is subject to the terms of our written agreement.