§ 12-2604 Requires Courts to Identify the Alleged “Care or Treatment at Issue” and to Scrutinize Claimed Board-Certified Specialties (Including Majority-Time Practice)

1. Introduction

AROJOJOYE v. ALLEN is an Arizona medical-malpractice expert-qualification decision arising from the death of Crystal Allen following a stroke-related stay at a skilled nursing facility, a pressure ulcer, a bedside debridement, and subsequent infection progressing to sepsis.

The petitioner, Dr. Oyesiji A. Arojojoye, sought summary judgment on the ground that the plaintiff’s standard-of-care expert (Dr. Andrew Marc Meillier, board certified in internal medicine) was unqualified under A.R.S. § 12-2604 because Dr. Arojojoye claimed he was a board certified wound care specialist. The respondent, Vickie Allen (estate representative and statutory beneficiary), contended the relevant alleged negligence concerned failure to recognize and treat a developing systemic infection—an internal-medicine issue—rather than the adequacy of the debridement itself.

The core issues before the Supreme Court were:

  • What “care or treatment at issue” must be used to decide whether the case “involves” the defendant’s specialty under § 12-2604 as interpreted in Baker v. University Physicians Healthcare?
  • How must courts evaluate a “claimed” board-certified specialty (here, ABWM wound care) before imposing a same-specialty/same-board-certification requirement?

2. Summary of the Opinion

The Arizona Supreme Court vacated the court of appeals’ memorandum decision and vacated and remanded the superior court’s ruling denying summary judgment.

The Court held that the court of appeals misapplied § 12-2604 (as interpreted in Baker v. University Physicians Healthcare) by failing to correctly identify the “care or treatment at issue.” The appellate court focused on the wound-care treatment rendered (the debridement and wound management) rather than the negligence Allen actually pressed: an alleged failure to recognize, evaluate, and treat a developing systemic infection/sepsis after the debridement.

Because the record and the superior court’s stated rationale were unclear as to which “care” was being evaluated, the Court remanded for the trial court to: (1) correctly identify the alleged care or omission at issue; (2) determine whether that alleged care falls within wound care, internal medicine, or overlapping specialties; and (3) if wound care is implicated, conduct the required analysis of whether the claimed ABWM certification qualifies as a “specialty”/board certification under § 12-2604.

The Court also provided guidance that if § 12-2604(A)(2) is invoked, a defendant asserting a specialty for § 12-2604 purposes must have devoted a majority of professional time to that specialty in the relevant year, aligning the defendant’s position with the statute’s comparable-training-and-experience design.

3. Analysis

3.1 Precedents Cited

Medical malpractice proof and the expert-testimony baseline

  • Francisco v. Affiliated Urologists Ltd., 258 Ariz. 95 (2024): Cited for the proposition that Arizona generally requires expert testimony to establish standard of care and causation, with a limited exception (res ipsa loquitur). It frames why § 12-2604 gatekeeping is outcome-determinative: if the expert is disqualified, the claim often cannot proceed.

The controlling framework for § 12-2604 specialty matching

  • Baker v. University Physicians Healthcare, 231 Ariz. 379 (2013): The central authority. The Court relied on Baker for three key propositions:
    1. Same-specialty matching applies only when the “care or treatment at issue” is within the defendant’s specialty (specialty relevance requirement).
    2. “Specialty” is not whatever the defendant claims; it is an objectively determinable limited area of medicine in which a physician is or may become board certified, evaluated case-by-case and not limited to ABMS.
    3. Overlapping capability does not loosen the match: if the defendant was practicing within the relevant specialty, § 12-2604 requires an expert certified in that specialty “even if physicians in other specialties might also have competently provided the treatment.”
    The Court also used Baker to resolve the standard-of-review dispute: expert-qualification determinations are reviewed for abuse of discretion (statutory interpretation de novo).

Standards of review in summary judgment and expert admissibility

  • Glazer v. State, 237 Ariz. 160 (2015): Cited for de novo review of summary judgment.
  • Windhurst v. Ariz. Dep't of Corr., 256 Ariz. 186 (2023): Cited for viewing facts in the light most favorable to the nonmoving party on summary judgment.
  • Rasor v. Nw. Hosp., LLC, 243 Ariz. 160 (2017): Reinforces Baker’s point that admissibility/expert-qualification questions can be dispositive at summary judgment.

Appellate deference and unclear trial-court reasoning

  • City of Phoenix v. Geyler, 144 Ariz. 323 (1985): The Court invoked the general principle of affirming if any reasonable view supports the judgment, but explained it could not apply that principle due to uncertainty about what the superior court actually decided.
  • McAlister v. Loeb & Loeb, LLP, 260 Ariz. 97 (2025): Cited as an example of affirming summary judgment on alternative grounds; here, the Court declined to do so because necessary factual predicates were unclear.
  • Higdon v. Evergreen Int'l Airlines, Inc., 138 Ariz. 163 (1983): Supports remand where findings are infirm due to an erroneous view of law unless the record permits only one resolution. The Court used Higdon to justify sending the case back rather than deciding specialty/certification in the first instance.

Gatekeeping for expert testimony

  • State v. Strong, 258 Ariz. 184 (2024), quoting State v. Romero, 239 Ariz. 6 (2016): Cited to emphasize the trial court’s gatekeeping role for expert testimony reliability and helpfulness (here used by analogy to explain why courts must scrutinize claimed certifications when § 12-2604 is invoked).

Scope of issues on remand

  • Gulf Homes, Inc. v. Goubeaux, 136 Ariz. 33 (1983): Cited for the proposition that when an appellate court reverses/remands without specific directions, further proceedings may occur.
  • Jimenez v. Wal-Mart Stores, Inc., 206 Ariz. 424 (App. 2003), quoting United States v. Tham, 960 F.2d 1391 (9th Cir. 1992): Supports the notion that on remand parties may raise new motions/objections and present additional evidence—important here because § 12-2604(A)(2) and certification details may be litigated more fully.

3.2 Legal Reasoning

(a) The two-step inquiry and the “care or treatment at issue” anchor

The Court reaffirmed Baker’s architecture: specialty matching is not triggered by labels alone; it turns on whether the specific care alleged to be negligent falls within the defendant’s specialty. This case illustrates the practical pitfall: when courts focus on the care actually rendered (wound debridement) rather than the alleged omission (failure to evaluate/treat infection), they may impose an incorrect specialty-matching requirement and effectively decide the case on an expert-qualification technicality unrelated to the pleaded theory.

The Court found that Allen’s theory—supported by her expert declaration—targeted the October 1 visit as a missed opportunity to pursue sepsis workup, imaging, hospitalization, and infectious source control. The court of appeals, however, analyzed “wound care” because records described the “wound care team” and a bedside debridement. The Supreme Court held that this misidentification was a misapplication of § 12-2604.

(b) Abuse-of-discretion review for expert qualification decisions

The Court rejected attempts to recharacterize the specialty-at-issue determination as purely legal. Following Baker, it held expert-qualification determinations are reviewed for abuse of discretion, while statutory interpretation is reviewed de novo. The Court also clarified this applies in the summary-judgment context, where expert admissibility can be dispositive.

(c) Why the trial court’s reasoning was insufficiently clear

The superior court stated only that although Dr. Arojojoye had a wound certification, “the care he rendered in this case—for which fault is alleged—falls within his practice of internal medicine.” The Supreme Court explained that this could mean either:

  • the rendered wound care is “internal medicine” (which ignores overlapping-scope possibilities); or
  • the omitted follow-up sepsis care is “internal medicine” (which requires treating “care rendered” as “care not rendered”).

Because these readings could produce different § 12-2604 outcomes, the Court vacated and remanded for a clearer, allegation-focused analysis consistent with Rule 56(a)’s requirement to state reasons with enough clarity for appellate review.

(d) Guidance on “claimed” board-certified specialties: certification is not self-proving

Although the Court did not decide whether ABWM wound care certification qualifies as a § 12-2604 specialty, it held that lower courts must do more than accept a defendant’s claim or the mere existence of a certificate. Drawing from Baker, it identified indicators relevant to whether a claimed board certification reflects “distinct training and experience,” including voluntary certification administered by a recognized organization, medical-school graduation, residency or other training, examination, and continuing education/practice requirements, as well as professional consequences (e.g., privileges/insurance/salary effects). The Court stressed that ABMS recognition is not required, motives are irrelevant, and courts retain the statutory gatekeeping duty when a certification is invoked to exclude an opposing expert.

(e) § 12-2604(A)(2) and the “majority-time” symmetry for defendants

The Court went beyond the immediate disposition to provide guidance likely to matter on remand: because § 12-2604(A)(2) requires that a testifying expert devote a majority of professional time to the specialty in the preceding year, a defendant seeking to invoke specialist status under § 12-2604 must similarly have devoted a majority of professional time to that claimed specialty during the relevant period. This aligns the statute’s purpose—comparable training and experience—and addresses the practical concern that a physician cannot devote a “majority” of time to multiple specialties simultaneously.

3.3 Impact

  • Sharper pleading-to-specialty alignment: Parties and courts must tie the § 12-2604 analysis to the plaintiff’s actual negligence theory (including omissions), not merely to the setting (e.g., “wound care team”) or a procedure performed.
  • More robust litigation over non-ABMS credentials: Defendants relying on certifications from bodies like ABWM should expect evidentiary scrutiny into whether the credential constitutes a qualifying “specialty” under § 12-2604, rather than automatic acceptance.
  • Majority-time practice becomes a practical constraint: The Court’s guidance on § 12-2604(A)(2) may limit strategic “specialty claiming” where a defendant has a credential but does not primarily practice in that area; it also provides plaintiffs a concrete avenue to challenge the asserted specialty.
  • Increased importance of clear trial-court findings at Rule 56 stage: Because expert qualification can end a case at summary judgment, trial courts must articulate what care is at issue and why it implicates (or does not implicate) the claimed specialty.

4. Complex Concepts Simplified

  • Standard of care: The level and type of care a reasonably careful similarly situated health-care provider would provide under similar circumstances.
  • § 12-2604 “same specialty” rule: If the defendant was practicing within a specialty relevant to the alleged negligence, the plaintiff’s expert must generally share that specialty (and board certification, if the defendant is/claims board certified in that specialty).
  • “Care or treatment at issue”: The specific medical act or omission alleged to be negligent—not every service the defendant provided.
  • Overlapping specialties: More than one specialty may competently treat the same condition, but under Baker, if the defendant was practicing within their specialty, the expert must still match that specialty.
  • Board-certified specialty (non-ABMS): Arizona does not restrict “specialty” to ABMS boards; courts must determine whether the claimed certification reflects a distinct, objectively identifiable practice area with meaningful training/experience markers.
  • Gatekeeping: The trial judge’s role in determining whether expert testimony (or credentials used to trigger statutory matching) meets legal thresholds before it reaches a jury.
  • Special action: An extraordinary appellate proceeding (similar to seeking immediate review) often used when a normal appeal would be inadequate.

5. Conclusion

AROJOJOYE v. ALLEN reinforces and operationalizes Baker v. University Physicians Healthcare by insisting that courts begin § 12-2604 analysis with a precise identification of the alleged negligent care or omission. The decision rejects shortcut reasoning that equates the defendant’s setting or documentation (“wound care team”) with the legally relevant “care or treatment at issue.”

The Court further signals that “claimed” board-certified specialties—particularly those outside ABMS—are not self-authenticating for § 12-2604 purposes and require judicial scrutiny tied to the statute’s goal of comparable training and experience. Finally, by emphasizing the “majority-time” requirement’s symmetry, the Court constrains opportunistic specialty-claiming and provides litigants clearer tools for litigating expert qualification in Arizona medical malpractice cases.