Who's Who

Board of Directors

Catherine Matthews, RN
Summit Medical Center


Cathy Matthews has been an orthopedic nurse since she graduated from Samuel Merritt University over 45 years ago.  Always choosing to remain at the bedside caring for patients with musculoskeletal conditions, she recently opted to retire from her lifelong profession of hospital nursing.  Cathy has been an official member of the Jackson Orthopedic Foundation Board of Directors for two years, but she has volunteered with the Foundation for the past ten years.  A skilled instructor and a knowledgeable clinician, Cathy brings a wealth of experience to Jackson Orthopaedic Foundation Board meetings and events.

Kathleen A. Geier, DNP
Board Member
Nurse Practitioner
Webster Orthopedics


Dr. Kathleen Geier has over 40 years' experience as an orthopedic nurse.  She is certified as both a Family Nurse Practitioner and an Orthopaedic Nurse, with clinical experience in providing musculoskeletal care to patients of all ages and developmental stages.  Dr. Geier specializes in assessing, diagnosing, and treating chronic and stable musculoskeletal conditions and minor fractures.  She currently coordinates and co-teaches Jackson Orthopaedic Foundation's Orthopedic Primary Care course with Dr. AJ Benham, and is widely published in professional nursing literature.  She is a founding partner of Jackson Orthopedic Foundation and has served on the Board of Directors since the organization's origin in 1999.

Michael DiGiacomo, DPM
Board Member


Dr. DiGiacomo has been in clinical practice for over 35 years and in private practice in Oakland for over 20 years.  A highly respected podiatrist, Dr. DiGiacomo’s greatest sense of fulfillment comes from treating a patient and making each step a little easier. He has maintained the highest levels of certification at national and state levels and has served as a consultant for the Oakland A’s and the Golden State Warriors.  Dr. DiGiacomo has actively participated in clinical research trials during his career, and has served as an editor for medical journals.  

Jerrald Goldman, MD (retired)
Medical Director
Orthopedic Surgeon


Dr. Jerrald R. Goldman specialized in orthopedic trauma and sports medicine during his 40 year medical career.  Recently retired, he was one of the founders of The Doctors Company and served as a UCSF clinical professor of orthopedic surgery at Highland Hospital’s Orthopedic Clinic.  Dr. Goldman also served as a consultant for the Golden State Warriors and was a team physician and Orthopedic Surgeon for the Oakland Athletics baseball team for over 25 years.

Peter Slabaugh, MD
Board Member, Medical Director
Orthopedic Surgeon


Dr. Peter Slabaugh specializes in surgical and nonsurgical treatment of spinal disorders, including pediatric conditions, scoliosis, fractures, and back pain associated with arthritis and other spine conditions.  He is a clinical professor of orthopedic surgery at Highland Hospital’s Orthopedic Clinic and has extensive experience evaluating and treating fractures.   A frequently sought-after speaker, Dr. Slabaugh has also authored and published many articles in professional journals.

Staff and Collaborative Partners

Kathleen A. Geier, DNP
Research Department
Clinical Sub-Investigator
Education Department
Director: Orthopedic Nursing Education

A.J. Benham, DNP FNP-C
Education Department
Instructor, Curriculum Developer: Orthopedic Nursing Education
Assistant Professor: Department of Nursing, Holy Names University
Nurse Practitioner: San Francisco Multi-Specialty Medical Group

Rosie Huie, C.P.A.
Finance Department
NPO Accounting

Dora Yee
Finance Department
Bookkeeping Services

Jacob Geier, B.Sc.
Instructor/Intern Coordinator

Tom Wagner
Administrative Director