Kennedy, J.
{¶ 1} Appellant, Donald A. Wegman, appeals from a judgment of the Tenth District Court of Appeals denying a writ of mandamus to compel appellee, the Ohio Police & Fire Pension Fund (the fund), to award him on-duty-percentage disability benefits for certain injuries that he alleges were sustained on the job. Because the funds board of trustees did not abuse its discretion in denying those benefits, we affirm the judgment of the court of appeals.
Facts and Procedural History
{¶ 2} Wegman worked for Anderson Township as a firefighter from 1997 until March 1, 2014, and he is a member of the fund, which provides disability benefits and pensions to its members as well as their spouses, children, and dependent parents. See R.C. 742.02. On February 23, 2015, he filed an application seeking disability benefits for various medical conditions, including injuries to his right shoulder and left knee, heart disease, and depression and anxiety. Except for the injury to his left knee, which occurred after he resigned, he attributed these conditions to his occupation.
{¶ 3} Merris T. Young, M.D., examined Wegman and prepared a report opining that he was permanently disabled. The funds form instructed Dr. Young to use the American Medical Associations Guides to the Evaluation of Permanent Impairment (AMA Guides) as the framework for evaluating permanent impairments, and referencing tables in the AMA Guides, he estimated Wegmans Whole Person Impairment to be 36 percent, based on the following disability percentages:
• Left Knee 11 percent • Heart 10 percent • Right Shoulder 11 percent • Eyes 5 percent • Hearing 0 percent • Lumbar Back 5 percent • Thoracic Back 0 percent
{¶ 4} The board referred Wegman to vocational expert Robert E. Breslin, who interviewed Wegman and concluded that he was unable to return to his former occupation of Firefighter and has significant physical restrictions that will limit him to a range of sedentary work activity at best.
{¶ 5} James Talmadge, M.D., reviewed Wegmans medical records and prepared a medical report for the board. Concluding that Dr. Youngs rating was not correct, he determined that the left-knee impairment should have been rated at 4 percent and that the right-shoulder impairment should have been 0 percent. Dr. Talmadge concluded that Wegmans back pain, heart condition, and vision impairment were not disabling and agreed with the disability percentages that Dr. Young had provided on those conditions. He then calculated Wegmans Whole Person Impairment to be 4 percent.
{¶ 6} The board secured a second vocational opinion from Michael A. Klein, Ph.D., who reviewed the medical and vocational evaluations supplied to him and characterized the damage to Wegmans earning capacity as moderate.
{¶ 7} The Disability Evaluation Panel reviewed these evaluations, determined that Wegmans disability was not caused by Wegmans employment as a firefighter, and recommended an 8 percent disability benefit (the 4 percent Whole Person Impairment calculated by Dr. Talmadge multiplied by 2 for moderate earning-capacity damage). Relying on the entire record which includes [Wegmans] personal history file and medical evidence obtained in conjunction with [the] application for disability benefits, the board granted Wegman off-duty disability retirement, with an annual benefit of 8 percent of his average annual salary.
{¶ 8} Wegman appealed the boards decision based on four conditions: heart disease, right-shoulder injury, left-knee injury, and anxiety/depression. As supplemental evidence, he submitted a report prepared by Denver Stanfield, M.D., who noted that an MRI of Wegmans right shoulder showed a tearing of the rotator cuff, a chronic tear of the superior labrum (the cartilage around the shoulder socket), arthritis, and capsulitis. Wegman also submitted a report from Terry Glendening, Ph.D., his treating psychologist, attesting to Wegmans impairment from posttraumatic stress disorder from the hazards of firefighting and a hostile workplace environment. Dr. Glendening also referred to another physicians report that job-related stress from Wegmans employment may have been a factor for his heart condition. Finally, Wegman provided a letter from retired Battalion Chief Paul Cunningham describing the verbal and, in one case, physical abuse that Wegman experienced in the workplace.
{¶ 9} The board arranged for Wegman to be examined by W. Kent Soderstrum, M.D., who assessed a 10 percent impairment for the heart condition, 9 percent for the right shoulder, 5 percent for the low back, and 10 percent for the left knee. Relying on the AMA Guides, Dr. Soderstrum estimated that Wegman had a Whole Person Impairment of 31 percent. Thomas M. Evans, Ph.D., provided the board a psychological assessment, estimating a 10 percent Whole Person Impairment caused by Wegmans dysthymic disorder and anxiety disorder, which each had a 10 percent impairment score according to the AMA Guides. Breslin, the vocational expert who had previously evaluated Wegman, reviewed the new evidence and provided an addendum report maintaining his opinion that Wegmans abilities would restrict him to sedentary and light, unskilled occupations. Bruce S. Growick, Ph.D., also submitted a vocational recommendation indicating that Wegman had sustained moderate wage loss from his disabilities.
{¶ 10} Gregory Jewell, M.D., the boards medical advisor, issued a recommendation based on his review of the records. Dr. Jewells report contains a column for Diagnosis and a column for Impairment %, as well as four lines designated by the letters (a), (b), (c), and (d). In the Diagnosis column, Dr. Jewell wrote Left-Knee-Quadriceps Rupture, Cardiac Arrhythmia, Right Shoulder, and what appears to be the Greek letter ? or psi, which can be shorthand for psychology, psychiatry, or psychological. See Andrew Colman, What is Psychology? 45 (3d Ed.2016). Dr. Jewell assessed a 6 percent left-knee impairment, a 9 percent impairment due to cardiac arrhythmia, a 9 percent impairment for the right shoulder, and 0 percent impairment for the psychological conditions. He concluded that only the knee condition was disabling, and he estimated Wegmans Whole Person Impairment to be 6 percent.
{¶ 11} Following a hearing and after stating that it had reviewed the evidence, the board awarded an off-duty disability benefit of 12 percent of Wegmans average annual salary based on Dr. Jewells medical recommendation and Dr. Growicks vocational recommendation.
{¶ 12} Wegman filed a complaint for a writ of mandamus in the Tenth District Court of Appeals. He challenged the boards decision not to award on-duty disability benefits for his right shoulder and his psychological conditions. The court of appeals referred the matter to a magistrate, who recommended denying the writ of mandamus. Wegman filed timely objections, but the court of appeals overruled the objections and adopted the magistrates decision.
{¶ 13} Wegman appealed to this court as of right.
Law and Analysis
{¶ 14} To be entitled to a writ of mandamus, a party must establish, by clear and convincing evidence, (1) a clear legal right to the requested relief, (2) a clear legal duty on the part of the respondent to provide it, and (3) the lack of an adequate remedy in the ordinary course of the law. State ex rel. Love v. ODonnell , 150 Ohio St.3d 378, 2017-Ohio-5659, 81 N.E.3d 1250, ¶ 3.
{¶ 15} Because the final board decision is not appealable, mandamus is available to correct an abuse of discretion by the board in denying disability-retirement benefits. State ex rel. Worrell v. Ohio Police & Fire Pension Fund , 112 Ohio St.3d 116, 2006-Ohio-6513, 858 N.E.2d 380, ¶ 10. An abuse of discretion occurs when a decision is unreasonable, arbitrary, or unconscionable. Id. We have recognized that the board abuses its discretion when it enter[s] an order which is not supported by some evidence. Kinsey v. Police & Firemens Disability & Pension Fund Bd. of Trustees , 49 Ohio St.3d 224, 225, 551 N.E.2d 989 (1990). Only if the boards decision is not supported by any evidence will mandamus lie. (Emphasis sic.) State ex rel. Woodman v. Ohio Pub. Emps. Retirement Sys. , 144 Ohio St.3d 367, 2015-Ohio-3807, 43 N.E.3d 426, ¶ 17.
{¶ 16} Pursuant to R.C. 742.38 and Ohio Adm.Code 742-3-05, the board is vested with the exclusive authority to evaluate the weight and credibility of the medical evidence in determining a members entitlement to disability-retirement benefits. State ex rel. Kolcinko v. Ohio Police & Fire Pension Fund , 131 Ohio St.3d 111, 2012-Ohio-46, 961 N.E.2d 178, ¶ 7. And because we are reviewing the boards decision for some evidence supporting it, the presence of contrary evidence is immaterial if there is evidence in support of the boards findings of fact. Id. at ¶ 9. In conducting this review, we are mindful that the board is permitted to accept the findings presented in the medical reports yet still reject their ultimate conclusions, id. , and it is not required to explain its decision or even cite the evidence upon which it has relied, State ex rel. Tindira v. Ohio Police & Fire Pension Fund , 130 Ohio St.3d 62, 2011-Ohio-4677, 955 N.E.2d 963, ¶ 30.
{¶ 17} The parties do not dispute that Dr. Jewell found that the 9 percent impairment to Wegmans right shoulder was not disabling and that Wegman had 0 percent impairment from his psychological conditions. At issue is whether Dr. Jewells finding is some evidence supporting the boards denial of disability benefits for these conditions. Wegman maintains that Dr. Jewells file-review report is not some evidence supporting the boards decision because he failed to consider evidence from the examining physicians and failed to explain the reasoning behind his recommendation, and further, Wegman asserts, Dr. Jewell failed to check boxes on the form showing that he actually had considered the findings presented to him. Wegman notes that the physicians who actually examined him, including the funds examining physicians, reported that the injuries were disabling. Further, Wegman argues that Dr. Jewell could not rely on Dr. Talmadges file-review report, because Dr. Talmadge was never asked to consider the new medical reports and the new MRI that Wegman presented in support of his appeal as it related to his right shoulder. Last, he maintains that Dr. Jewells file reviews cannot be considered some evidence supporting the finding that the psychological conditions were not disabling, because the only evidence presented-the reports of mental-health specialists-showed that his psychological conditions were disabling and Dr. Jewell lacked the expertise to contradict their opinions.
{¶ 18} We have held that a medical experts file review can constitute some evidence supporting the denial of disability compensation. State ex rel. Starr v. Indus. Comm. , 114 Ohio St.3d 449, 2007-Ohio-4558, 872 N.E.2d 1227, ¶ 14. Although we recognize that in Starr the experts file-review report was extensive and meticulously detailed, id. at ¶ 15, the amount of supporting detail that the expert provides in the report goes to the weight and credibility of the experts ultimate opinion, and the board, not this court, has the exclusive authority to evaluate the weight and credibility of the medical evidence, Kolcinko at ¶ 7. The medical opinion expressed, when drawn from a review of all the evidence, is itself some evidence that the board can rely on in reaching a decision.
{¶ 19} This analysis applies to Wegmans claim that Dr. Jewell did not consider reports showing impairment to the right shoulder based on Dr. Jewells failure to note which medical reports on record support his disability determination. Notably, the instructions on the medical-recommendation form for appeal hearings that Dr. Jewell completed state:
In reviewing the members records, the [Ohio Police & Fire] Medical Advisor must accept all findings of the examining physicians, but not the opinions drawn therefrom. In addition, the OP & F Medical Advisor should note all medical reports on record that may be supportive to the disability determination being made by the OP & F Medical Advisor.
(Emphasis added.) Tellingly, the form says that Dr. Jewell should note the supportive reports, not that he must do so. Nor did it require him to put a checkmark beside every document he reviewed . Accordingly, the fact that Dr. Jewell failed to note which reports support his determination that the shoulder injury was not disabling may affect the evidentiary weight of his medical opinion, but it does not mean that he failed to review all reports.
{¶ 20} Because there is no evidence that Dr. Jewell failed to consider all the evidence in the reports, his file-review report is some evidence that supports the boards determination that the right-shoulder impairment is not disabling. Dr. Jewell did not check the box that would have described Wegmans shoulder as disabling, even after he did check the box for Wegmans knee. This is an expression of a medical opinion drawn from the records and reports. Therefore, the boards decision to deny disability benefits for Wegmans shoulder was supported by some evidence.
{¶ 21} Regarding the psychological conditions, Dr. Jewell also chose not to check the box that they were disabling, again expressing a medical opinion. Further, although Dr. Glendening diagnosed Wegman with posttraumatic stress disorder, Dr. Evans concluded that Wegman did not meet the criteria for it. Dr. Evans also concluded that Wegmans Dysthymic Disorder does not render him incapable of performing his duties as a Firefighter/EMT. He did opine that Wegmans anxiety disorder was disabling, but Dr. Evans also reported that during the examination, Wegman was not observed to be anxious. According to Dr. Evans, [Wegman] was cooperative and friendly, and a rapport was easily established and maintained. * * * He maintained consistent eye contact throughout the interview. Attention and concentration were good. He was not observed to be restless or fidgety. Speech was normal for rhythm, rate and volume. Dr. Evans also pointed out that [Wegman] had some difficulties describing these symptoms [of anxiety] and noted some signs indicating that he tended to portray himself in a negative light in specific areas. As a result, there may be some distortion of the clinical picture. For example, it is possible that there is an element of exaggeration in certain complaints and problems. Although Dr. Evans did not get the impression that Wegman was exaggerating his symptoms, the results of the Personality Assessment Inventory indicate possible exaggeration of his psychological distress.
{¶ 22} Given these findings that Wegman did not suffer from posttraumatic stress disorder, that his dysthymic disorder was not disabling, that he had not displayed any observable symptoms of anxiety during the examination, and that the Personality Assessment Inventory results indicated that Wegman might have been exaggerating his symptoms, Dr. Jewell could form a medical opinion that Wegmans psychological conditions were not disabling. That opinion provides some evidence supporting the boards determination. And although Wegman claims that Dr. Jewell was not qualified to provide an opinion on the psychological conditions because he was not a mental-health specialist, Dr. Jewell could rely on Dr. Evanss report. And to the extent that Dr. Jewell reached a different conclusion from Dr. Evans regarding whether the anxiety disorder was disabling, Wegman points to no evidence in the record showing that a medical doctor such as Dr. Jewell is not competent to evaluate the severity of an anxiety disorder.
{¶ 23} Accordingly, some evidence supports the boards decision, and we affirm the judgment of the court of appeals denying Wegman the requested writ.
Judgment affirmed.
ODonnell, French, Gwin, and DeWine, JJ., concur. OConnor, C.J., and Fischer, J., dissent.
W. Scott Gwin, J., of the Fifth District Court of Appeals, sitting for ONeill, J.