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Mark Menich, MD, is an experienced physician at Denver Allergy & Asthma Associates in Boulder, Lakewood, Westminster, Denver, Littleton, and Arvada, Colorado. At the practice, he provides complete allergy and immunology consultations and management for patients of all ages. 

Dr. Menich earned his Bachelor of Arts in History and a doctoral degree from the University of Illinois in Chicago. He then completed his internal medicine residency and allergy and immunology fellowship at Walter Reed Army Medical Center in Washington, DC. 

Dr. Menich has board certifications from the American Board of Allergy and Immunology and the American Board of Internal Medicine. He is a fellow of the American Academy of Allergy, Asthma, and Immunology and the American College of Allergy, Asthma, and Immunology. Dr. Menich is also a member of the International Society of Travel Medicine and the Colorado Allergy and Asthma Society. 

At Denver Allergy & Asthma Associates, Dr. Menich offers various services to improve his patient's health and well-being. 

Mark Menich, MD, is an experienced physician at Denver Allergy & Asthma Associates in Boulder, Lakewood, Westminster, Denver, Littleton, and Arvada, Colorado. At the practice, he provides complete allergy and immunology consultations and management for patients of all ages. 

Dr. Menich earned his Bachelor of Arts in History and a doctoral degree from the University of Illinois in Chicago. He then completed his internal medicine residency and allergy and immunology fellowship at Walter Reed Army Medical Center in Washington, DC. 

Dr. Menich has board certifications from the American Board of Allergy and Immunology and the American Board of Internal Medicine. He is a fellow of the American Academy of Allergy, Asthma, and Immunology and the American College of Allergy, Asthma, and Immunology. Dr. Menich is also a member of the International Society of Travel Medicine and the Colorado Allergy and Asthma Society. 

At Denver Allergy & Asthma Associates, Dr. Menich offers various services to improve his patient's health and well-being. 

Mark Menich, MD, is an experienced physician at Denver Allergy & Asthma Associates in Boulder, Lakewood, Westminster, Denver, Littleton, and Arvada, Colorado. At the practice, he provides complete allergy and immunology consultations and management for patients of all ages. 

Dr. Menich earned his Bachelor of Arts in History and a doctoral degree from the University of Illinois in Chicago. He then completed his internal medicine residency and allergy and immunology fellowship at Walter Reed Army Medical Center in Washington, DC. 

Dr. Menich has board certifications from the American Board of Allergy and Immunology and the American Board of Internal Medicine. He is a fellow of the American Academy of Allergy, Asthma, and Immunology and the American College of Allergy, Asthma, and Immunology. Dr. Menich is also a member of the International Society of Travel Medicine and the Colorado Allergy and Asthma Society. 

At Denver Allergy & Asthma Associates, Dr. Menich offers various services to improve his patient's health and well-being. 

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.

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.

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.

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"

Ida Rastegar graduated from Yale University and earned her M.D. at Emory University in Atlanta. She completed her residency in obstetrics and gynecology and went on to join the faculty at UCLA for several years. After moving to Boulder, CO with her husband and three children, she took on the role of office manager for Rinnova. She is excited about some of the newer treatments at Rinnova such as Cellfina cellulite treatment and Halo. With her experience in OB/GYN she is thrilled to introduce patients to the newest vaginal rejuvenation treatment offered, diVa. When she is not at Rinnova, she spends time with her children and her Yorkie, Nutmeg. She loves yoga, cooking, and exploring new restaurants around town.

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.

Philosophy:

"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

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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.

Philosophy: 

"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

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