Western Medical Associates

Mark A. Twardowski, DO

Mark A. Twardowski, DO

Clinical Interests
  • Diabetes Care
  • Internal Medicine
  • Osteopathic Manipulation
Medical School: University of Health Sciences; College of Osteopathic Medicine, Kansas City, MO

Residency: Pontiac Osteopathic Hospital, Pontiac, MI

Board Certifications: American Osteopathic Board of Internal Medicine

Dr. Twardowski has a great love for the outdoors and if not at work, he’s out hiking or hunting in the mountains or fly fishing in one of the many trout streams in the area. He enjoys spending time with his family and his 2 labs. He also enjoys tending to his salsa garden and making his famous fiery peach salsa.

Melissa A. Schmalz, DO

Melissa A. Schmalz, DO

Clinical Interests
  • Women’s Health Care
  • Pediatrics
Medical School: Kansas City University of Medicine and Biosciences, Kansas City, MO

Residency: Center for Family Medicine, Sioux Falls, SD

Board Certifications: American Board of Family Medicine

Dr. Schmalz enjoys traveling and seeing new places. When able, she enjoys hiking and camping with her family. She loves reading whenever time permits, but most of her time is spent at her kids various activities.



Thomas A. Moore, DO

Thomas A. Moore, DO

Clinical Interests
  • Family Medicine
  • Pediatrics
  • Dermatology
  • Osteopathic Manipulation
Medical School: Chicago College of Osteopathic Medicine, Chicago, IL

Internship: Phoenix General Hospital, Phoenix, AZ

Roy O. Mears, DO

Roy O. Mears, DO

Clinical Interests
  • Family Medicine
  • Osteopathic Manipulative Medicine
Medical School: Western University College of Osteopathic Medicine of the Pacific, Pomona, CA

Residency: Michigan State University Kalamazoo Center For Medical Studies, Kalamazoo, MI

Board Certifications: American Osteopathic Board of Family Physicians (AOBFP)

Dr. Mears grew up in rural western Montana and spent his residency in southwestern Michigan. He’s drawn to the rural lifestyle and enjoys the “small-town” feel of Grand Junction and the surrounding areas.



Amanda Coltrinari, RN, MSN, FNP

Amanda Coltrinari, RN, MSN, FNP

Clinical Interests
  • Family Medicine
  • Women's Healthcare
Undergraduate: Colorado Mesa University; University of Colorado; Regis University

Masters: The George Washington University

Board Certifications: Colorado State Board of Nursing, AANP, BLS, ACLS

Amanda is a wife and mother to two small children. She loves being with her family, traveling, spending time outdoors, hiking, golfing, running, and CrossFit.

Deb Twardowski, MSN, RN, ANP-BC

Deb Twardowski, MSN, RN, ANP-BC

Clinical Interests
  • Adult and Geriatric Medicine
  • Bone Densitometry
Undergraduate: Oakland University, BSN

Masters: Post-Graduate Certificate in Adult-Geriatric Primary Care Advanced Practice; ANCC

Board Certifications: Post-Graduate Certificate in Adult-Geriatric Primary Care Advanced Practice; ANCC

Deb enjoys spending time with her husband and two young adult children in the mountains and on the beach. She is also “mom” to two very energetic Labrador Retrievers. She especially enjoys her gym time and work outs.