Welcome to Mountain View Surgical Associates

Serving the Parker, Castle Rock, Lone Tree, Centennial, and Frisco communities in Colorado.

Our goal is to provide the best possible care to our patients while providing the flexibility they need. At MVSA we believe that you are not your condition, but a person. We strive to treat you with professional and compassionate care during each step of your treatment.

What You Can Expect from Our Practice

A Caring Environment

We treat our patients with compassion and care in order to provide them with a comfortable experience. In most cases, we are able to see new patients within 24-48 hours.

Devoted Staff

Our staff of committed and knowledgeable health care professionals does an exceptional job of coordinating care, scheduling, and providing insurance and financial information. They welcome the opportunity to answer your questions.

Exceptional Surgeons

Our physicians have a well-earned reputation of being proficient and compassionate surgeons. Our surgeons partner with you to plan the best surgical care possible.

Advanced Care

Our board-certified physicians have extensive experience in all aspects of general surgery: trauma, robotic, laparoscopic, thoracic, vascular, and surgery of the breast. They use the most recent surgical techniques to treat a wide variety of conditions

What’s New at MVSA

Dr. Chris Winter at MVSA

Robotic-Assisted Surgery

Dr. Chris Winter at MVSA

Robotic-Assisted Surgery

Our Surgeons & Providers

Chris B. Winter, M.D., F.A.C.S.

Chris Winter, MD, FACS

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Michael E. Bertocchi, M.D., F.A.C.S.

Michael Bertocchi, MD, FACS

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Christine D. Rogness, M.D., F.A.C.S.

Christine Rogness, MD, FACS

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John James, M.D., F.A.C.S.

John James, MD, FACS

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Jeffrey Harr, M.D., M.P.H., F.A.C.S.

Jeffrey Harr, MD, FACS

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Dr. Tyler Chan

Tyler Chan, MD, FACS

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Dr. Robert Weir

Robert Weir, MD

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Eliza "Shevie" Kassai, MD

Eliza “Shevie” Kassai, MD

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Debra Lopez, NP-C, BSN, CRNFA, CNOR

Debra Lopez, NP-C

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Lauren Whitsitt

Lauren Whitsitt, PA-C

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Charles Willett

Charles Willett, PA-C

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Specialties and Conditions

Trauma & General Surgery

Including Abdominal Wall Reconstruction (Hernia Repair), Appendectomy

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Comprehensive Breast Care

Including Benign, Breast Pain, Cancer

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Thoracic & Vascular Surgery

Including Benign Lung Disease, Lung Cancer, Rib Fracture Fixation, Peripheral Vascular Disease and Spontaneous Pneumothorax

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Surgical Oncology (Cancer)

Including Breast, Colon, Rectum, Esophagus, Lung

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Laparoscopic/Minimally Invasive Surgery

Including Adrenal, Colon, Gallbladder, Hernia

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Robotic Surgery

Including Fundoplication, Gallbladder, Hernia

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Endocrine Surgery

Including Thyroid Surgery, Parathyroid Surgery, Adrenal Surgery

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Including Hemorrhoidectomy, Lipoma removal, Muscle biopsy, Nerve biopsy

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Offices in Parker, Castle Rock, Centennial, Sky Ridge and Frisco Colorado

Parker, Colorado

Sierra Building, 9399 Crown Crest Blvd #220,
Parker CO 80138

Telephone: 303-805-1855
Fax: 303-805-4421

Office Hours
Monday-Friday 8:30 am-5:00 pm

Castle Rock, Colorado

Alexander Building, 2352 Meadows Blvd #250
Castle Rock, CO 80109

Telephone: 720-379-6774
Fax: 720-379-6792

Office Hours
Monday-Friday 8:30 am-5:00 pm

Centennial, Colorado

14000 East Arapahoe Road, Suite 210
Centennial, CO 80112

Telephone: 720-738-3035
Fax: 720-242-7943

Office Hours
Monday-Friday 8:30 am-5:00 pm

Sky Ridge-Lone Tree, Colorado

Aspen Building, 10103 Ridgegate Pkwy. Suite 213
Lone Tree, CO 80124

Telephone: 720-738-3033
Fax: 720-738-3034

Office Hours
Monday-Friday 8:30 am-5:00 pm

Frisco, Colorado

360 Peak One Drive Suite #390
Frisco, CO 80443

Telephone: 970-668-4506
Fax: 720-738-3015

Office Hours
Monday-Friday 8:30 am-5:00 pm

If you need to reach our physician on-call outside of normal business hours, please call the number for the office location you were seen at and follow the prompts to be connected.