In 2009, the late Sandra Day O’Connor personally presented Mark Kille with Yavapai County’s Pro Bono Attorney of the Year award. Fifteen years and one firm rebrand later, clients and colleagues in Arizona’s mountain towns still call him “The Mountain Lawyer” — a nickname the firm has built its entire regional identity around.
AN AWESOME ATTORNEYS EDITORIAL PROFILE
ATTORNEY ADVERTISING NOTICE. This profile was researched and written independently by Awesome Attorneys’ editorial team. It was not paid for, commissioned, or reviewed prior to publication by the firm profiled. All case results, recoveries, and recognitions described below are attributed to their sources. Past results do not guarantee or predict a similar outcome in any future matter. This article is for general information only and is not legal advice; reading it does not create an attorney–client relationship.
MINGUS MOUNTAIN LAW GROUP, PLLC — At a Glance
| FOUNDED BY | Mark A. Kille, dedicated to injury victim representation since 2002; operated as Moceri & Kille, PLLC with partner Nicholas A. Moceri from 2012–2015 before Kille founded the current firm |
| OFFICES | Prescott, Prescott Valley, and Flagstaff, serving Northern Arizona mountain communities including Cottonwood, Sedona, Payson, and Yarnell |
| PRACTICE MODEL | Injury law only — the firm states it “limits our practice to only injury law”: personal injury, dog attacks, nursing home abuse, wrongful death, vehicle accidents, premises liability, and slip and fall |
| NOTABLE AWARD | 2008–2009 Yavapai County Pro Bono Attorney of the Year, presented to Kille by the late Justice Sandra Day O’Connor |
| COMMUNITY ROLES | Board service, Arizona Community Foundation of Yavapai County; board service, MATFORCE (a Yavapai County substance-abuse-prevention coalition); 2024 “Men of Vision,” Prescott Living Magazine |
| SCHOLARSHIP PROGRAM | The firm awards an annual Mingus Mountain Law Group Scholarship to two graduating high school seniors who demonstrate a commitment to community service |
| FEE MODEL | Contingency — the firm states it does not get paid until the client is paid |
Sources: northernarizonainjurylaw.com (firm website), Yelp, AllUsInjuryLawyers.com, Facebook. Compiled July 2026.
“The Mountain Lawyer” and an Award Presented by Sandra Day O’Connor
Mark Kille has represented injury victims since 2002. In 2012, he partnered with fellow injury attorney Nicholas A. Moceri to form Moceri & Kille, PLLC, a partnership that continued until 2015, after which Kille went on to found and run Mingus Mountain Law Group, PLLC, continuing his practice of exclusively representing injury victims. Along the way, in the 2008–2009 bar year, Kille received the Yavapai County Pro Bono Attorney of the Year award — presented in person by then-retired U.S. Supreme Court Justice Sandra Day O’Connor, a genuinely distinctive, independently notable credential this profile could not find matched by any other firm in this series to date.
The firm’s branding leans directly into Kille’s own biography: raised in a large family and having built his practice representing clients in Arizona mountain towns — Prescott, Flagstaff, Yarnell, and Payson among them — Kille has earned the “Mountain Lawyer” nickname the firm now uses as its public identity, reinforced by his own stated enjoyment of hiking, biking, and snowboarding the same mountains, including Mingus Mountain itself, that give the firm its name.
A Single-Practice Firm Across Three Northern Arizona Offices
Mingus Mountain Law Group operates from offices in Prescott, Prescott Valley, and Flagstaff, giving it a genuinely tri-city presence across Yavapai and Coconino counties rather than a single home base with satellite marketing pages. The firm’s practice is exclusively injury law — personal injury, dog attacks, nursing home abuse, wrongful death, vehicle accidents, premises liability, and slip and fall — and its own materials specifically emphasize working to reduce clients’ medical bill liens so that more of a settlement reaches the client directly, alongside a claimed 99% success rate.
The Results Board
Mingus Mountain Law Group’s public materials do not publish an itemized settlement-and-verdict table, and Awesome Attorneys did not locate one through independent research. The firm’s 99% success rate claim, cited on its Yelp listing, is reported here as the firm’s own figure rather than an independently audited statistic. This profile does not supply case-result dollar figures the firm has not published.
Past results do not guarantee or predict a similar outcome in any future matter.
What Clients Report
Reviews across most third-party platforms are strongly positive and consistently name Kille directly rather than offering generic praise for the firm.
“Mark Kille is a fantastic personal injury attorney who cares about his clients to the utmost degree, and knows personal injury law like the back of his hand.”
— Client review, published via AllUsInjuryLawyers.com
A separate reviewer specifically praised Kille’s handling of cases that involved a parallel workers’ compensation claim alongside a personal injury matter, calling him someone who “cares about his clients to the utmost degree.” In the interest of a complete picture, this profile also notes that one directory aggregator’s Flagstaff-specific listing shows a single one-star rating with no accompanying review text; Awesome Attorneys could not determine the basis for that rating and treats it as an outlier against the otherwise consistent, specific, positive record described above.
A Scholarship, a Rescue Board Seat, and Snowboarding the Same Mountain
Kille’s community involvement is unusually well documented for a firm of this size. Beyond the O’Connor-presented pro bono award, he has served on the board of the Arizona Community Foundation of Yavapai County and MATFORCE, a Yavapai County coalition focused on substance-abuse prevention. In 2024, Prescott Living Magazine selected him as one of its “Men of Vision.” The firm personally awards an annual scholarship — the Mingus Mountain Law Group Scholarship — to two graduating high school seniors who demonstrate a passion for community giving, with Kille himself handing over the award each year.
Peer Standing
Awesome Attorneys did not locate Super Lawyers, Best Lawyers, or State Bar Board of Legal Specialization recognition for Mark Kille, and this profile does not use the word “specialist” to describe him on that basis. His clearest independently notable recognition remains the Yavapai County Pro Bono Attorney of the Year award, made distinctive by the identity of the justice who presented it.
The Arizona Backdrop, in Plain English
Readers weighing a Northern Arizona injury claim should understand a few baseline Arizona rules. What follows is general information, not legal advice.
The two-year clock. Arizona’s statute of limitations for personal injury and wrongful death claims is generally two years (A.R.S. § 12-542).
Fault is shared, not all-or-nothing. Arizona follows pure comparative negligence (A.R.S. § 12-2505): a claimant’s recovery is reduced by their share of fault but not eliminated entirely.
Medical liens get negotiated, not just paid. Arizona law allows hospitals and medical providers to place liens on an injury settlement, but those liens are frequently negotiable — directly relevant to the firm’s stated practice of working to reduce clients’ medical bill liens before disbursement.
Suing the government is faster and stricter. Claims against a public entity require a formal notice of claim within 180 days (A.R.S. § 12-821.01) and suit within one year (A.R.S. § 12-821) — relevant given the firm’s rural, multi-county caseload where government-maintained roads are a frequent factor.
The Awesome Attorneys Assessment
Mingus Mountain Law Group’s strongest asset is a combination this series rarely sees together: genuine, decades-long regional roots across three Northern Arizona offices, an exclusively injury-focused practice, and a founder whose community involvement — a pro bono award presented by Sandra Day O’Connor, board seats on a community foundation and a substance-abuse coalition, and a personally funded scholarship — goes well beyond the standard “we support local charities” language most firms in this series offer.
The honest gap is the same one facing most small regional firms here: no published settlement table to check the claimed 99% success rate against, and a review record that, while overwhelmingly positive, includes at least one unexplained low rating this profile could not investigate further. For a client anywhere in Arizona’s mountain communities — Prescott, Prescott Valley, Flagstaff, Sedona, Cottonwood, Payson, or Yarnell — who wants a lawyer with genuine local roots and an unusually documented community record, Mingus Mountain Law Group is a strong, well-supported choice.
Methodology & Sourcing
This profile was researched and written independently by Awesome Attorneys’ editorial team in July 2026. Primary source: the firm’s current website, northernarizonainjurylaw.com, including Mark Kille’s individual attorney biography page, which provided founding, award, and community-service detail. Secondary sources: Yelp (multiple location listings), AllUsInjuryLawyers.com (client reviews across Flagstaff and Prescott listings), and Facebook. Awesome Attorneys did not independently verify the 99% success rate or the specific circumstances of the Pro Bono Attorney of the Year award beyond the firm’s own published account, which is corroborated by its consistent repetition across the firm’s own materials over multiple years. Mingus Mountain Law Group did not commission, pay for, or pre-approve this article. All figures are attributed to their sources; past results do not guarantee or predict future outcomes. This article is general information, not legal advice.
© 2026 Awesome Attorneys. Independent editorial. Sponsored placements on Awesome Attorneys are always clearly labeled; this is not one.
Publisher Disclosure & Independence Notice
This profile is an independent editorial article published by Awesome Attorneys. Awesome Attorneys does not endorse, recommend, or warrant any lawyer or law firm profiled on this site, and inclusion in this series is not paid placement. “Awesome Attorneys” is a brand name only; it is not a rating, ranking, or claim that any profiled firm is superior in any legal category.
Awesome Attorneys maintains a separate attorney directory. Only listings there marked “Sponsored” or “Ad” reflect a paid or sponsored relationship with Awesome Attorneys; this editorial profile is not such a listing.
Facts, figures, and claims in this profile were independently researched from public sources as described in the Methodology & Sourcing section above and are current only as of the research date; they are subject to change without notice, and readers should confirm any detail directly with the firm before relying on it. This notice supplements, and does not replace, the Attorney Advertising Notice at the top of this profile.