Building an interventional pain OBL from scratch

May 6, 2026 · Pouyan Golshani, MD, Interventional Radiologist

Starting an interventional pain OBL is more accessible than most realize. Here’s the rate research and feasibility framework.

For many of us in pain medicine, the idea of owning our own office-based lab (OBL) feels like a distant dream—something reserved for physicians with MBAs or private equity backing. The reality is that the path to building and owning your clinical space is a series of concrete, manageable steps. It’s less about a single leap of faith and more about a disciplined process of financial modeling, operational planning, and strategic execution. The appeal is obvious: full clinical autonomy, control over your schedule and staff, and the ability to capture both the professional and facility fee for your work. This article breaks down the framework I used to evaluate and build an OBL, focusing on the critical early stages that determine success or failure. For a broader look at resources and guides, see the full pain medicine hub.

Phase 1: The Back-of-the-Napkin Pro Forma (That Becomes Your Bible)

Before you scout a single location or call a single equipment vendor, you must build a pro forma. This is simply a detailed financial projection that models your OBL’s potential revenue and expenses over the first three to five years. It’s the single most important document in this process, and its accuracy will dictate your ability to secure financing and make informed decisions.

Modeling Revenue: The Payer Mix is Everything

Your revenue is a function of three variables: procedure volume, CPT codes, and payer reimbursement rates. Start by listing your most common interventional procedures. A typical pain OBL might focus on:

Epidural Steroid Injections (e.g., CPT 62323, 64493)
Radiofrequency Ablation (e.g., CPT 64635)
Spinal Cord Stimulator Trials (e.g., CPT 63650)
Sacroiliac Joint Injections/Ablation (e.g., CPT 27096, 64640)

Next, project a realistic weekly case volume. Be conservative. Finally, and most critically, you need to model reimbursement. This is where most physicians make their first mistake. Using national Medicare averages for all payers will create a dangerously inaccurate forecast. Your revenue depends entirely on your local market’s commercial payer rates and your anticipated payer mix (e.g., 40% Medicare, 50% Commercial, 10% Workers’ Comp). A single commercial contract can pay two to three times the Medicare facility fee for the same RFA. Getting this data right is non-negotiable.

Modeling Expenses: Fixed vs. Variable

Your expenses fall into two buckets:

Fixed Costs: These don’t change with patient volume. Think rent for your ~2,500 sq ft space, salaries for your core staff (RN, rad tech, front desk), equipment leases (C-arm), malpractice insurance, and EMR software fees.
Variable Costs: These scale with your case volume. This includes medical supplies (needles, sterile drapes, medications), billing service fees (typically 4-7% of collections), and accreditation costs.

When you subtract total expenses from total revenue, you get your projected EBITDA (Earnings Before Interest, Taxes, Depreciation, and Amortization). This number is the lifeblood of your OBL. A robust financial model built on real-world data is the foundation of a successful project. If the numbers don’t work on paper, they will not work in reality. This is where an ASC/OBL feasibility advisory engagement can be invaluable, providing access to market-specific reimbursement data that makes your pro forma defensible and bank-ready.

Phase 2: Getting in the Game with Payers

You can have the most beautiful facility and the best clinical team, but without payer contracts, you have a very expensive hobby, not a business. Payer credentialing and contracting is a long, frustrating process that should begin the moment you have a corporate entity and a signed lease.

The timeline is the killer here; most of us underestimate it. It can take 6 to 12 months to get fully credentialed and contracted with major commercial payers. This process cannot be rushed. You must start by establishing your legal business entity (typically an S-Corp or LLC), obtaining a Tax ID Number (EIN), and securing a National Provider Identifier (NPI-2) for the facility itself. These are the table stakes required to even submit an application.

Your strategy should be to target the top 3-5 commercial payers in your specific geographic area. Who are the dominant employers and what insurance do they offer? That’s your target list. While Medicare credentialing is more straightforward, commercial contracts are the key to financial viability. The trap to avoid is assuming you can simply open your doors and bill out-of-network (OON). While OON might have been a viable strategy a decade ago, payers have become incredibly aggressive in pushing patients to in-network facilities. Building a sustainable practice requires being in-network with the key players in your market.

Phase 3: From Blueprint to Procedure Room

Finding and building out your physical space often runs in parallel with payer contracting. The ideal space for a pain OBL is typically 2,000-3,000 square feet, often in a medical office building with adequate parking and accessibility.

Key considerations for the space include:

A Procedure Room: It needs to be large enough to comfortably accommodate a C-arm, procedure table, and staff, with lead-lined walls for radiation safety.
Recovery Area: You’ll need at least 2-4 recovery bays or rooms where patients can rest post-procedure before discharge.
Support Areas: This includes a waiting room, a private consultation room, clean and soiled utility rooms, and ADA-compliant restrooms.

The most common mistake physicians make is underestimating the complexity and cost of a medical build-out. This isn’t like renovating a standard office. You will need an architect and a contractor with experience in healthcare construction. They understand the specific requirements for things like medical gas lines (if needed), ventilation (HVAC), and electrical systems that can support your imaging equipment. Be prepared for a construction budget that can easily reach $200-$300 per square foot, depending on your location and the condition of the initial space. Always budget for a 10-15% contingency fund to cover the inevitable surprises that arise during construction.

Phase 4: Building Your A-Team and Operational Workflow

Your OBL is only as good as the people who run it. While you might be the sole physician, you cannot do this alone. A lean, effective startup team is crucial.

Your essential day-one hires will likely be:

Registered Nurse (RN): Manages pre-op, intra-procedure sedation (if offered), and post-procedure recovery. An experienced procedural or PACU nurse is worth their weight in gold.
Radiologic Technologist (RT): Operates the C-arm, manages radiation safety, and is a critical part of the procedural team.
Front Office Coordinator: This person is your air traffic controller, handling scheduling, patient check-in, insurance verification, and prior authorizations.

Once your team is in place, you need to build the operational infrastructure. This means selecting and implementing an Electronic Medical Record (EMR) system and a practice management/billing platform. The critical decision here is whether to handle billing in-house or outsource it to a third-party company. For a new OBL, outsourcing is almost always the right choice. A dedicated billing company that specializes in interventional pain has the expertise to fight for every dollar, manage denials, and navigate the complexities of facility fee billing. The 4-7% they charge is easily recouped through higher collections and fewer administrative headaches for you.

Phase 5: Equipping Your Lab for Success

The final major piece of the puzzle is your equipment and supply chain. The C-arm is the heart of the interventional pain OBL and your single largest capital expense.

You have several options here:

Buy New: This offers the latest technology and a full manufacturer’s warranty but comes with the highest price tag ($120k – $200k+).
Buy Refurbished: A high-quality refurbished C-arm from a reputable vendor can save you 30-50% and perform just as well for the majority of pain procedures. Ensure it comes with a solid warranty and service contract.
Lease: A lease allows you to acquire the equipment with a lower upfront cash outlay, converting a large capital expense into a manageable monthly operating expense. This is often the most practical option for a startup OBL.

Beyond the C-arm, you’ll need a suite of other equipment: a radiolucent procedure table, patient monitoring devices (EKG, NIBP, SpO2), an ultrasound machine for guided injections, and basic emergency equipment. For disposable supplies, establishing accounts with major medical distributors is key. Consider joining a Group Purchasing Organization (GPO), which leverages the buying power of its members to negotiate better pricing on everything from needles and syringes to sterile gowns and gloves.

Building an OBL from scratch is a formidable undertaking, but it is not an insurmountable one. By breaking the process down into these distinct phases—financial modeling, payer contracting, build-out, staffing, and equipping—you can create a methodical, data-driven plan. The journey transforms you from just a clinician into a business owner, offering a level of professional satisfaction and financial independence that is difficult to achieve in any other practice setting.

If you’ve run the numbers and are ready to explore the next steps, the most effective way to validate your plan is to discuss it with experts who have navigated this process before. To get a detailed assessment of your market and pro forma, you can schedule an OBL feasibility call.