Specifier-Driven Categories: Where Price Actually Changes Minds
Key takeaways
- A specifier-driven category is any category where selection authority sits with clinical, technical or practice stakeholders while purchasing authority sits with procurement.
- Randomized evidence shows price information reduced cost by 9 to 11 percent when the choice was between competing versions within one technical class.
- Among competing models of a single product type, 25 percent of price-naive specifiers chose the most expensive option against 7 percent of those shown prices.
- Where the options represented different technical approaches, price information produced no measurable difference, which is why class-conversion programs stall.
- Organizations that succeeded used a price ceiling per category rather than an approved vendor list, because a cap restrains supplier pricing while leaving the technical choice intact.
- 9 to 11%
- Reduction in implant cost when surgeons saw price, choosing within one clinical class
- Wasterlain, Melamed, Bello, Karia and Capo, Journal of Hand Surgery, 2017, 42(8), 593-601
- 25%
- Price-naive surgeons choosing the most expensive plate, against 7% of price-aware surgeons
- Wasterlain, Melamed, Bello, Karia and Capo, Journal of Hand Surgery, 2017, 42(8), 593-601
- up to 61%
- Share of hospital supply spend in specifier-driven categories, the best-measured example
- Montgomery and Schneller, The Milbank Quarterly, 2007, 85(2), 307-335
Every sourcing professional has run this meeting. The analysis is sound, the benchmark defensible, the savings real on paper. Forty minutes later nothing is agreed and you leave with a note to circle back.
It happens in every category where the person who selects the item is not the person who buys it. The clinician chooses the device. The technology team picks the platform. The practice lead names the firm they want on the engagement. Procurement owns the contract and the number, and someone else owns the decision.
The usual explanation is that stakeholders are difficult or that executive sponsorship is missing. Both are convenient and neither is useful. There is better evidence about what happens in that room, and it points at how the ask is built rather than at who is sitting there.
The structure that defines these categories
These categories share one structural feature: purchasing authority and selection authority sit with different people. That split is not a governance failure to be corrected. It is usually correct, because the person accountable for whether the thing works should have a say in choosing it.
What makes it a sourcing problem rather than a purely technical one is concentration. In hospitals, where the pattern has been studied most closely, physician preference items account for up to 61 percent of total supply expenditures, and supplies reach as much as 31 percent of total cost per case (Montgomery and Schneller, The Milbank Quarterly, 2007). Most organizations have an equivalent concentration somewhere, and it is rarely in the categories procurement controls outright.
The cleanest evidence we have on what price information does
Healthcare produced the useful experiment, so that is where the numbers come from. The mechanism it describes is not clinical, which is why the finding travels.
A randomized controlled survey put 226 orthopedic surgeons across six continents through eight cases with options attached. Half saw each option's average selling price. Half did not (Wasterlain, Melamed, Bello, Karia and Capo, Journal of Hand Surgery, 2017).
The result splits in two, and the split is the whole finding.
Within a technical class, price moves the decision
Where the options were of the same class, competing versions of the same device, price awareness reduced cost by 9 to 11 percent. Among competing models of one product type, 25 percent of the price-naive group chose the most expensive option against only 7 percent of the price-aware group.
That is a large behavioral shift produced by nothing more than showing a number.
Across technical classes, price does nothing
Where the options represented genuinely different approaches to the problem, there was no difference between the groups at all.
Read together, the boundary is clear. A specifier will trade on price once the technical approach is settled and the remaining question is whose version to use. They will not trade on price when the question is which approach to take. That is not obstruction, it is the correct order of priorities, and a program that requires the second behavior is asking for something it will not get.
Why savings cases get aimed at the wrong decision
A conversion program that moves volume from one technical class to a cheaper class asks the specifier to change a professional judgment on economic grounds. The evidence says that ask fails, and it fails regardless of how good the analysis is.
The same study found familiarity with the item was the most common reason for selection in both groups. Familiarity is a proxy for something real: the specifier has done the job with this thing and knows how it behaves under load, under deadline, in the failure case. Asking them to trade that for a percentage is a poor trade from where they sit, and they are usually right about it.
The structural finding that outranks the tactics
Research on organizations managing these categories identified two competing approaches. The formulary model narrows the approved list of manufacturers or products. The payment cap model sets a price ceiling per category and lets the specifier choose within it.
The formulary approach proved harder to implement given resistance to top-down dictates. The cap approach was more workable because it preserves the specifier's choice while restraining supplier pricing (Montgomery and Schneller, 2007).
That is the same boundary the randomized study found, reached from a different direction. Constrain the price, not the choice.
How that changes the way the ask is written
Set a ceiling per category rather than an approved vendor list. Compete suppliers within a technical class and never across one. Introduce price at the point where the class is already chosen, because that is the only point where evidence says it moves anything. And treat familiarity as a switching cost to be priced rather than an objection to overcome, because relearning a tool has a real cost curve and the specifier is the one who pays it.
The part that stays hard
The same research found that cross-functional review bodies had not become well institutionalized, unlike the equivalents in pharmacy, producing wide variation in composition and function between organizations and even between departments in the same one.
Specifier participation was described as essential and difficult to secure. One manager put it plainly: you cannot force people to the table. The organizations that succeeded orchestrated decisions rather than dictating them, which meant committing to things other than price, including tooling, scheduling and training.
That reframes what the sourcing professional is doing in the room. The job is not winning an argument about price. It is constructing a decision the specifier can agree to without surrendering the thing they are accountable for.
What to take into the next one
Know which decision you are actually asking about, because within-class and across-class are different conversations with different odds. Bring price at the moment the technical approach is settled. Propose a ceiling rather than a list. Price the switching cost honestly. And bring something to trade that is not money, because agreement in these categories is rarely bought with the savings number alone.
For more on category strategy and supplier management, see our articles and resources, or the tools for spend and market analysis. To discuss a category program, get in touch.
References
- Wasterlain, A. S., Melamed, E., Bello, R., Karia, R., and Capo, J. T. (2017). The Effect of Price on Surgeons' Choice of Implants: A Randomized Controlled Survey. Journal of Hand Surgery, 42(8), 593 to 601. doi.org/10.1016/j.jhsa.2017.05.005
- Montgomery, K., and Schneller, E. S. (2007). Hospitals' Strategies for Orchestrating Selection of Physician Preference Items. The Milbank Quarterly, 85(2), 307 to 335. pmc.ncbi.nlm.nih.gov/articles/PMC2690325
Disclosure: This article is published by SourcingTomorrow and reflects our analysis and commentary on procurement and sourcing practice. It is for informational purposes only and does not constitute legal, financial, clinical, or operational advice, and should not be relied upon for purchasing, contracting or vendor selection decisions. Consult qualified advisors for guidance on specific situations.
A specifier will trade on price once the technical approach is settled and the question is whose version to use. They will not trade on price when the question is which approach to take.
Where price information changes a specifier's decision, and where it does not
| Decision being asked | Effect of showing price | What this means for the program |
|---|---|---|
| Choosing between competing versions within one technical class | Cost down 9 to 11 percent | Compete suppliers here; this is where price belongs |
| Choosing the most expensive option among competing models | 25 percent down to 7 percent | Transparency alone moves the tail of the distribution |
| Choosing between different technical approaches | No measurable difference | Class-conversion programs will not land |
| Primary reason for selection, both groups | Familiarity with the item | Switching cost is real and should be priced, not argued with |
Wasterlain, Melamed, Bello, Karia and Capo, The Effect of Price on Surgeons' Choice of Implants: A Randomized Controlled Survey, Journal of Hand Surgery, 2017, 42(8), 593-601. 226 orthopedic surgeons across six continents, randomized to price-aware or price-naive versions of eight clinical cases.
Frequently Asked Questions
- Why do physician preference item savings programs fail so often?
- Usually because they ask the specifier to change a technical judgment on economic grounds. Randomized evidence shows price information reduces cost by 9 to 11 percent when the choice is between competing versions within one technical class, and produces no measurable difference when the choice is between different technical approaches. A program built on class conversion is asking for behavior the evidence says will not happen.
- Does showing surgeons the price of an implant actually change what they choose?
- Yes, within limits. In a randomized study of 226 specifiers, those shown average selling prices selected less expensive options when the alternatives sat within one technical class, and the share choosing the single most expensive option fell from 25 percent to 7 percent. The effect disappeared when the alternatives represented different technical approaches, so transparency works on supplier choice rather than on technical approach.
- Is a preferred vendor formulary or a price cap more effective?
- Research on organizations managing these categories found the price cap more workable. Narrowing the approved manufacturer list runs into resistance to top-down dictates, while a ceiling per category preserves technical choice while restraining supplier pricing. That aligns with the randomized evidence: constrain the price and leave the choice, because the choice is the part specifiers will defend.
- How much spend typically sits in specifier-driven categories?
- Enough to dominate the portfolio. In hospitals, where the pattern is best measured, physician preference items reach up to 61 percent of total supply expenditures, with supplies at as much as 31 percent of total cost per case. Most organizations have an equivalent concentration somewhere, and it is rarely in the categories procurement controls outright, which is why these categories absorb disproportionate effort.
- What should a sourcing lead bring to a clinical stakeholder meeting?
- Clarity about which decision is on the table, since within-class and across-class conversations have very different odds. Bring price at the point where the technical approach is already settled, propose a category ceiling rather than an approved list, and treat familiarity with a tool as a genuine switching cost to be priced rather than an objection to argue against. Organizations that succeeded orchestrated decisions rather than dictating them.
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