Photo of Katherine M. Dru

Katherine M. Dru

  • Denver
    999 18th Street
    Suite 3000
    Denver, CO 80202
    T: 720-687-2851
    Los Angeles
    1875 Century Park East
    Suite 1600
    Los Angeles, CA 90067
    T: 310.551.8107


Colby College, B.A., 2005, magna cum laude

The University of Chicago Law School, J.D., 2008

  • The University of Chicago Law Review

Bar Admissions

  • 2011, California
  • 2019, Colorado
  • 2008, Illinois
Presentations & Speaking Engagements

Katherine (Katie) Markowski Dru is a partner in the litigation department and medical staff practice group of Hooper, Lundy & Bookman. She also serves as co-chair of the firm’s Diversity & Inclusion Committee. Ms. Dru’s practice comprises a wide range of matters on behalf of hospitals, medical staffs, physicians, and other health care providers, with an emphasis on managed care litigation and all aspects of medical staff law. Ms. Dru has significant experience in all aspects of arbitration and litigation, and has first  and second-chaired jury trials, arbitrations, peer review hearings, and administrative hearings.

Ms. Dru’s extensive managed care experience includes arbitration and litigation alleging unfair business practices, breach of contract, fraud, false claims act violations, and ERISA violations. In 2017, Ms. Dru co-chaired a jury trial against Anthem Blue Cross concerning out-of-network reimbursement that resulted in the second-largest verdict in the state for the relevant practice area that year.

Ms. Dru’s medical staff practice includes peer review/Medical Board hearings; investigations into physician behavior; managing on-site responses to Statements of Deficiencies identified by CMS surveyors; drafting policies and advising on supervision requirements for allied health professionals; and advising hospitals on various issues relating to the use of medical residents and students, including drafting policies and conducting disciplinary hearings.

Ms. Dru received a Bachelor of Arts degree, magna cum laude with distinction in French Studies and International Studies, from Colby College. She received her J.D. from The University of Chicago Law School, where she was a member of the University of Chicago Law Review, the Mandel Legal Aid Clinic’s Irwin Askow Housing Initiative, and the Willem C. Vis International Arbitration Moot Court team.

Ms. Dru is firmly committed to pro bono service. She has met with success in a vast range of pro bono matters, including a criminal appeal before the Seventh Circuit Court of Appeals, numerous appeals of denials of unemployment insurance benefits before the California Unemployment Insurance Appeals Board, and an appeal of a denial of dental benefits for a foster child to the California Department of Social Services. 

Ms. Dru previously was an associate in the Chicago offices of Foley & Lardner, LLP and Hogan Lovells US, LLP.

Ms. Dru is fluent in written and spoken French.

Professional Affiliations

  • Vice Chair, Nursing & Allied Health Care Professionals Task Force, American Bar Association, Health Law Section
  • American Health Lawyers Association, Medical Staff, Credentialing, and Peer Review Practice Group
  • California Society for Healthcare Attorneys

Honors & Awards

  • Super Lawyers Southern California Rising Star, 2020

Presentations & Speaking Engagements

  • Advance Practice Provider Executives (“APPex”) Leadership Summit COVID-19 and Relaxed Restrictions on APRN and PA Practice: Temporary Necessity or Permanent Shift? Presented by Katherine Dru, September 18, 2020, (details of the conference here).
  • California Association of Medical Staff Services (“CAMSS”) 2020 Education Series Legal Update: #MSPsintheknow, presented by Jennifer Hansen and Katherine Dru, September 17, 2020, (details here)
  • Hooper, Lundy & Bookman's Webinar on COVID-19 and Legal Changes to AHP and Medical Resident Practice: Challenges in Redeploying Existing Healthcare Workforce During the State of Emergency and Beyond, May 19, 2020.  See HLB's COVID-19 Resource Center
  • American Health Lawyers Association Webinar: Hearing Rights for Advanced Practice Professionals, May 12, 2020
  • California Association Medical Staff Services Conference, Medical Staff Legal Update, May 23-24, 2019
  • Colorado Association of Medical Staff Services Spring Conference: National Practitioner Data Bank Reporting Guidelines, Colorado Springs, CO, May 4, 2019
  • HLB 2019 Medical Staff Update Seminar - Oakland Marriott City Center, CA; March 12, 2019 - Westin Los Angeles Airport, CA, , March 5, 2019
  • Hooper, Lundy & Bookman's 2018 Managed Care Update - Westin Los Angeles Airport, 5400 W Century Blvd, Los Angeles, CA 90045, September 6, 2018
  • Hooper, Lundy & Bookman's 2018 Managed Care Update - Berkeley Hotel Shattuck Plaza, 2086 Allston Way, Berkeley, CA, September 5, 2018
  • Hooper, Lundy & Bookman's 2017 California Managed Care Update: The Potential Impact of Health Reform, Changing Provider Contracts and Regulation on Managed Care Providers; Berkeley: August 22, 2017; Los Angeles August 24, 2017
  • CAMSS 46th Annual Educational Forum, Long Beach, CA, June 1, 2017
  • HLB 2017 Medical Staff Update: Issues and Strategies for California Hospital Medical Staffs Oakland and Los Angeles, May 2, 2017 - Oakland, May 10, 2017 - Los Angeles
  • CHA Hospital Compliance Seminar, Sacramento, Costa Mesa, February 15, 2017 and March 1, 2017
  • Patient Safety Organizations: What Compliance Officers Need to Know, California Hospital Association Hospital Compliance Seminar, February 2017
  • Responding to Payor Audits and Fighting Recoupments, HFMA Southern California Chapter Winter Educational Program, November 2016
  • Medical Staff Update, In-house CLE, June 2016
  • Managed Care Disputes, In-house CLE, December 2015
  • Privileging for New or Novel Procedures or Treatments, CAMSS Annual Education Forum, May 2015


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