Desi Penington, MD
Internist
7160 Irving Street
Westminster, CO 80030
LOCAL HEALTHCARE PROVIDERS
Tebra only allows patients to write reviews following their scheduled appointment with the provider or practice.
Tebra verifies providers before they can appear in Tebra search. Find a top-rated provider and book an appointment instantly.
70 providers
Availability last updated 06/14/2025
Desi Penington, MD
Internist
7160 Irving Street
Westminster, CO 80030
With 24 years of experience, Dr. Igor Borisov is a board-certified internal medicine specialist at Ninth Avenue Internal Medicine in Denver. Dr. Borisov earned his medical degree from Vilnius University Medical School and completed his residency in internal medicine at Good Samaritan Hospital in Cincinnati.
As an internal medicine physician, Dr. Borisov treats patients with a variety of acute and chronic health conditions, such as hypertension, asthma, diabetes, depression and more. Dr. Borisov gives each patient the time and premium care they deserve, catching and treating diseases early before they become serious. He also works with patients to find up-to-date treatment plans that they’re comfortable with and that address their unique needs.
Dr. Borisov combines top-notch education with years of experience to make each patient visit unforgettable. He also speaks fluent Lithuanian, and he’s currently accepting new patients.
Dr. Igor Borisov, MD
Internist
4500 East 9th Avenue
Suite 140
Denver, CO 80220
Daniel Witten, MD, FACP is a board-certified internal medicine physician at Ninth Avenue Internal Medicine in Denver, with over 23 years of professional experience. Dr. Witten graduated cum laude from Vilnius University Medical School and completed his internal medicine internship at the State University of New York and internal medicine and primary care residency at the University of Colorado Health Science Center in Denver. He practiced at Rose Medical Center and founded the Ninth Avenue Internal Medicine Practice in 2003.
For the compassionate, premium care Dr. Witten provides to every patient, Denver Magazine has awarded him a “Five Star Doctor” rating. He has also received the Vitals.com Patients' Choice Award and has worked as an NBA physician for the Denver Nuggets. Dr. Witten has actively participated with the local medical charity Operation Walk Denver and traveled with the medical charities to Nicaragua, Panama, Peru, Guatemala, Honduras and across Latin and Central America. American College of Physicians awarded Dr. Witten with the Fellows rank, one of their highest academic recognition. Dr. Witten serves on the Board of Denver Medical Society and to Rose Medical Hospital Pharmaceuticals and Nutrition Committee.
Diabetes, hypertension, migraines, thyroid disorders, high cholesterol, heart disease, various digestive disorders, attention deficit disorder, depression, anxiety and neurological conditions are just some of the health conditions Dr. Witten is uniquely qualified to treat. He always recommends the least invasive, most innovative treatment first, uses cost saving technology and medications and catches disease symptoms early before serious health problems arise. Patients enjoy his humor and friendly bedside approach.
In his free time, Dr. Witten enjoys the Argentine tango, skiing, traveling and spending time with his son. He is also fluent in Lithuanian and is currently accepting new patients.
Dr. Daniel Witten, MD
Internist
4500 East 9th Avenue
Suite 140
Denver, CO 80220
Samantha “Sammy” Pushchak, PA, is a board-certified physician assistant serving patients at Summit Primary Care in Denver, Colorado.
Born and raised in Colorado, Sammy is a graduate of Colorado State University in Fort Collins and obtained her Master of Health Science and Physician Assistant Certificate at Lock Haven University in Pennsylvania.
At Summit Primary Care, Sammy feels very passionately that her patients should have a say in their health care plan and be as involved as possible in the decision-making process. She is extremely bubbly and energetic, and she truly loves her job. Sammy believes the best provider-patient relationship revolves around trust and honesty, and she prioritizes creating a strong bond with her patients.
Outside of her medical practice, Sammy enjoys spending time with her family and friends, being outdoors, traveling, cooking, reading, and watching TV shows and movies. She recently got married and has a dog and cat at home.
Mrs. Samantha Pushchak, PA-C
Physician Assistant
300 East Hampden Ave
Ste. 201
Englewood, CO 80113
Scott Horton, AGACNP
Internist
700 Ken Pratt Boulevard Ste 106
Longmont, CO 80501
Floyd Russak, MD, is a double board-certified internist (1984) and holistic medicine (1999) specialist. He specializes in internal medicine, pediatrics, and geriatric care at Russak Personalized Medicine in Greenwood Village, Colorado.
Dr. Russak grew up in Denver and graduated from Cherry Creek High School in 1973. He earned his bachelor’s degree at Northwestern University in Chicago, studying music and biology. He then went on to receive his doctorate of medicine at George Washington University in Washington, where he served on the team that treated President Ronald Reagan in 1981.
Dr. Russak completed his internship and residency training in internal medicine and pediatrics at Harvard Medical School in Boston, where he served on the faculty for 12 years. He was the founder of Somerville Family Health, a 10-physician, four-office multispecialty in Boston, which he sold to Harvard in 1996. He had numerous television appearances on CBS while in Boston.
Dr. Russak owned East-West Health Centers from 1999 to 2017 and successfully sold that practice to On Point Medical Group. He has been practicing only personalized concierge medicine since that time
Dr. Russak’s special interests include managing high cholesterol, high blood pressure, diabetics, cardiac/lung problems, and weight loss. In addition to routine medical care, he is trained to perform minor office surgical and orthopedic procedures such as wart removal, biopsies, and simple fractures.
Dr. Russak served on the Copper Mountain Ski Patrol and was a singer with the Colorado Symphony Orchestra. He now skis Keystone and Aspen. He is married with two children, serves on the Board of Delegates of the Colorado Medical Society, is a clinical faculty member at the University of Colorado (CU) Medical School, and is currently the president of the Arapahoe, Douglas and Elbert County Medical Society.
"Patients in my personalized care programs experience 65% fewer hospitalizations than like age counterparts"
Dr. Floyd Russak, MD
Internist
5420 South Quebec Street
Suite 100
Greenwood Village, CO 80111
Dr. Chad Johnston, MD
Internist
27293 Thimbleberry Ln
Evergreen, CO 80439
Michael K. Cavanagh, MD joined Westmed Family HealthCare. He has a special interest in Sports Medicine and Wilderness Medicine. He is Board Certified. During his leisure time, Dr. Cavanagh enjoys running, cycling and snowboarding. Originally from Connecticut, he is married with two children.
"My primary goal as a physician is excellence in the care I provide. My philosophy is to treat my patients as a whole person, not just treating an illness.”
Specialty: Family Practice
In practice at WMFH: 1996
Education
Undergraduate: Drake University 1983 -1986
Medical School
University of Iowa 1990 -1993
Residency: University of Connecticut 1993 -1996
Board Certifications/Associations
American Board of Family Physicians, Board Certified 1993
American Academy of Family Physicians
Dr. Michael Cavanagh, MD
Family Physician
12201 Pecos St.
Suite 500
Westminster, CO 80234
Dr. Brewington grew up in California and completed her medical training on the east coast, but has considered Colorado her home since moving here in 2003. Following residency, she opened her own clinic in Ft. Collins and later joined a small private practice, where she cared for patients until her youngest son was born. She then stayed home to focus on raising her two boys before relocating to Boulder County, and joined Westmed in 2017. Her favorite activities outside of clinic include reading, crafts, hiking, and doing just about anything with family.
"My professional (and personal) mission is to nurture people towards wholeness of body, mind, soul, and spirit, so they can fully engage their lives. I believe in the healingpower of connection and enjoy cultivating long-term, collaborative relationships with patients in the context of their family, community, and environment. I’m committed to engaging with patients so that they are empowered with the knowledge, skills, confidence and motivation to overcome barriers and pursue their greatest potential for health and well-being.”
Education
Undergraduate: California Institute of Technology
Medical School
Dartmouth Medical School (now Geisel School of Medicine)
Residency: New Hampshire-Dartmouth Family Practice Residency
Board Certifications/Associations
American Board of Family Medicine
American Academy of Family Physicians
Alpha Omega Alpha Honor Medical Society
Dr. Flora Brewington, MD
Family Physician
12201 Pecos St.
Suite 500
Westminster, CO 80234
Pradeep Raj Rai, MD, FASAM, is a board-certified medical doctor and a Fellow of the American Society of Medicine. He is the medical director at Magnolia Medical Group, with locations in Denver and Wheat Ridge, Colorado, and he is board-certified in addiction medicine to offer the highest-quality care to every patient he sees.
Dr. Rai received his bachelor’s degree in cellular and molecular biology from Tulane University in New Orleans, Louisiana, before going on to earn his medical degree. After working for several years in the field of addiction medicine, he founded Magnolia Medical Group to provide the residents of Colorado with resources for addiction that combine behavioral health solutions alongside effective medical care.
Dr. Rai has experience in the many forms of addiction medicine and an unceasing dedication to making a positive impact on the lives of his clients and their families.
He welcomes anyone in need of help to Magnolia Medical Group, where they can expect comprehensive, nonjudgmental treatment in a safe and compassionate environment.
Pradeep Rai, MD
Surgeon
10160 W 50th Ave
Suite 4
Wheat Ridge, CO 80033
Charles Kopel, MD
Internist
1690 Meade Street
Denver, CO 80204
Andrzej Dankowski, MD
Internist
1690 Meade Street
Denver, CO 80204
Medical School: Tufts University School of Medicine – Boston, MA
Internal Medicine: Newton Wellesley Hospital – Boston, MA
Diagnostic Radiology: Virginia Mason Franciscan Health – Seattle, WA
Abdominal Imaging & Intervention: Brigham & Women’s Hospital – Boston, MA
American Board of Radiology 2016
Dr. Shane Morris
Radiologist
2055 N. High St
Suite 180, Presbyterian St. Luke's Medical Center
Denver, CO 80205
Medical School: Midwestern University, Chicago College of Osteopathic Medicine – Downers Grove, IL
Internal Medicine: Rush University Medical Center – Chicago, IL
Diagnostic Radiology: University Hospitals Cleveland Medical Center – Cleveland, OH
Neuroradiology: Barrow Neurological Institute – Phoenix, AZ
American Board of Radiology 2021
Dr. John Anderson
Radiologist
2055 N. High St
Suite 180, Presbyterian St. Luke's Medical Center
Denver, CO 80205
Medical School: University of Texas Medical School at Houston, Houston,TX
Internal Medicine: Texas A&M University Health Science Center – Scott & White Hospital, Temple, TX
Diagnostic Radiology: University of Texas Health Science Center at Houston, Houston, TX
Cardiothoracic Radiology: National Jewish Health/University of Colorado, Denver, CO
American Board of Radiology 2015
John Richards
Radiologist
2055 N. High St
Suite 180, Presbyterian St. Luke's Medical Center
Denver, CO 80205
Julie Kim, MD
Internist
9760 East 63rd Drive
Denver, CO 80238
Charles Kopel, MD
Internist
8354 Northfield Blvd
329
Denver, CO 80238