Developing an ambulatory surgical centre (ASC) involves overlapping phases rather than one predictable construction schedule. Feasibility, design, financing, regulatory preparation, recruitment and payer enrolment often advance together, and progress in one area may depend on decisions made elsewhere. The opening date is usually determined by the last unresolved dependency, not by construction alone.
Tina DiMarino, DNP, MBA, RN, CNOR, CASC, FACHE, CEO, from Custom Surgical Partners, explains that ambulatory surgery center development should begin with a clear understanding of the proposed procedures, expected case volume, physician participation, payer environment and regulatory pathway.
There is no universal timeframe. State approvals, construction, accreditation and payer enrolment proceed at different rates, so the proposed opening date should remain a working target until the facility, staff and operating systems are ready.
Medicare defines an ASC as a distinct entity operating exclusively to provide surgical services to patients who do not require hospitalisation and whose expected stay does not exceed 24 hours after admission [1]. Medicare-certified centres must also meet federal Conditions for Coverage addressing governance, surgical services, quality improvement, the physical environment, medical staff, nursing, infection control, patient rights and emergency preparedness [1].
The first phase tests whether the concept is viable
The earliest phase determines whether the proposed ASC can support its intended clinical programme under realistic operational and financial conditions.
A feasibility analysis normally begins with procedure mix and case volume. Physicians need to identify which cases may move to the ASC, whether the procedures and patient population are suitable for outpatient care, and how much volume can reasonably be retained.
Total practice volume does not necessarily reflect how many cases can move to the ASC. Payer contracts, patient eligibility, procedure coverage, scheduling patterns and access to competing facilities can all reduce the final number.
The analysis should also account for anaesthesia, recovery, equipment, staffing and emergency transfer needs. A proposed service line may require more space, specialised personnel or technical infrastructure than first assumed.
Payment assumptions require similar scrutiny. The Centers for Medicare & Medicaid Services maintains the ASC payment system and publishes information about covered procedures and facility payments [5]. Commercial payer policies may differ, while some states impose additional licensing, planning or certificate-of-need requirements. Financial projections should reflect the cases the ASC is likely to perform, not the broadest possible service list.
Physician investors should also establish how decisions will be made, how responsibilities will be divided and who will oversee clinical and administrative performance. Unclear governance can slow later choices involving design, staffing, equipment and contracts.
Site selection may begin during feasibility. Access, utilities, planning restrictions, patient travel patterns and emergency transfer arrangements all matter. A promising property may prove unsuitable once its infrastructure or regulatory constraints are examined.
Schedules often change at this point. Early analysis may show that volume projections are too optimistic, the proposed site needs major modifications, or the specialty mix requires another facility model. Revising the concept now is usually less disruptive than doing so after construction begins.
Clinical workflows need to influence the facility design
Once the concept appears viable, the design process must translate the clinical programme into a workable environment.
The procedure mix influences the number and size of operating rooms, recovery capacity, sterilisation areas, medication storage, imaging infrastructure and equipment requirements. An ophthalmology centre will not have the same spatial or technical needs as one supporting orthopaedic, vascular or gastrointestinal procedures.
Patient movement should be mapped from arrival through discharge. The layout must support registration, preoperative assessment, transfer into the procedure area, recovery and emergency response or transfer without creating avoidable congestion or compromising privacy.
Staff, instruments and supplies follow connected pathways. Designers need to understand how clean and contaminated items move, where medications are prepared, how devices are reprocessed and how clinicians access equipment during routine care and emergencies.
The SEIPS 3.0 human-factors model treats healthcare as a system in which people, tasks, technology, organisational conditions and the physical environment interact across the patient journey [4]. This perspective is relevant to ASC design because an inefficient layout can create repeated workarounds even when individual team members are experienced.
Inadequate recovery capacity may restrict scheduling even when operating rooms are available. Poorly positioned supplies can add unnecessary movement to every case, while an undersized sterilisation area may create recurring delays once procedures begin.
Federal Conditions for Coverage require an ASC to maintain a safe, sanitary and properly maintained environment [1]. State building codes, fire standards, licensing rules and accreditation expectations may add further obligations.
Design reviews should involve clinicians and operational staff, not only physicians and architects. Nurses, surgical technologists, anaesthesia professionals, infection-prevention personnel and administrators may identify risks that are less visible on a floor plan.
Equipment planning must progress alongside the architectural work. Some devices affect room dimensions, structural support, electrical capacity, ventilation or imaging requirements. Finalising equipment too late can lead to redesign, higher costs or compromises in how the space functions.
Regulatory preparation begins before construction ends
Licensing and accreditation should not be treated as tasks that begin after the building is complete.
Federal ASC standards extend beyond the physical environment. They address governing-body responsibility, credentialing, nursing, medical records, pharmaceutical services, quality assessment and performance improvement, infection control, patient admission, discharge and emergency preparedness [1].
Each area requires assigned responsibilities, prepared staff and evidence that procedures work in practice.
CMS survey guidance directs reviewers to assess an ASC’s actual performance and practices rather than simply checking whether documents exist [2]. Survey preparation should therefore advance while the site is being developed.
During construction, leaders can organise credentialing files, define committee responsibilities, establish quality programmes and create policies that match the proposed services. Early preparation may expose conflicts among the layout, clinical model and operating procedures before the opening date becomes fixed.
Infection prevention illustrates why this work cannot wait. CDC core practices call for leadership accountability, adequate resources, qualified infection-prevention personnel, job-specific education, current written policies and monitoring of adherence [3].
These expectations influence both facility and staffing decisions. The development team must determine where medications will be prepared, how clean and soiled equipment will remain separated, who will oversee infection prevention, and how staff competency will be documented.
Credentialing and privileging also require lead time. A defined process is needed for reviewing licences, training, professional history and requested privileges. Approved privileges must match practitioner competence and the procedures the ASC can support.
Emergency transfer arrangements, equipment, communication procedures and individual responsibilities must likewise be operational before patients arrive. Regulatory preparation therefore overlaps with construction, recruitment and payer enrolment rather than following them as a separate final stage.
Opening day depends on more than a completed building
A finished facility is only one condition for opening. Trained staff, functioning equipment, approved privileges, complete policies and reliable clinical and administrative systems must also be in place.
Recruitment can be one of the most variable parts of the schedule. Hiring too early increases pre-opening costs, while hiring too late leaves insufficient time for orientation, competency assessment and team preparation.
Orientation should cover patient flow, emergency procedures, infection-prevention practices, documentation standards, equipment use and individual responsibilities.
Rehearsals can test whether these elements work together. A mock patient journey may reveal poorly positioned supplies, incomplete discharge instructions or different assumptions about emergency response and transfer.
The Agency for Healthcare Research and Quality describes TeamSTEPPS as an evidence-based framework for improving communication and teamwork among healthcare teams [6]. Its modules on communication, team leadership, situation monitoring and mutual support can inform pre-opening rehearsals without replacing facility-specific training or competency assessment.
Operational testing should include routine scenarios and disruptions. Staff should consider what happens when patient information is incomplete, equipment becomes unavailable, a procedure lasts longer than expected or a transfer is required.
Payer enrolment, contracting and revenue-cycle processes must also be sufficiently advanced. An ASC can be clinically prepared but still experience disruption if authorisations, coding or claims workflows have not been tested.
Beginning with a controlled case volume allows staff to observe how the centre performs under real conditions before the schedule becomes more demanding. The aim is to ensure that remaining issues can be managed without placing unnecessary pressure on staff or patients.
Custom Surgical Partners works with physician groups on feasibility, facility planning, regulatory preparation and first-case readiness. The purpose of this assistance is to coordinate clinical, construction and operational planning while governance and compliance responsibilities remain with the ASC.
Physicians should expect plans to change as assumptions are tested. A revised layout, adjusted volume projection or delayed approval does not automatically indicate failure. It may represent a necessary correction before operations begin.
The most reliable opening date is the one supported by completed approvals, prepared staff and tested clinical systems, not simply a finished building.
References
[1] Electronic Code of Federal Regulations. (n.d.). 42 CFR Part 416: Ambulatory surgical services. Accessed July 16, 2026.
[2] Centers for Medicare & Medicaid Services. (n.d.). Ambulatory surgery centers: Survey protocols and interpretive guidelines. Accessed July 16, 2026.
[3] Centers for Disease Control and Prevention. (n.d.). CDC’s core infection prevention and control practices for safe healthcare delivery in all settings. Accessed July 16, 2026.
[4] Carayon, P., Wooldridge, A., Hoonakker, P., Schoofs Hundt, A., & Kelly, M. M. (2020). SEIPS 3.0: Human-centered design of the patient journey for patient safety. Applied Ergonomics, 84, 103033.
[5] Centers for Medicare & Medicaid Services. (n.d.). Ambulatory surgical center payment. Accessed July 16, 2026.
[6] Agency for Healthcare Research and Quality. (n.d.). TeamSTEPPS 3.0. Accessed July 16, 2026.
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