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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. 

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.

MedInfo Health specializes in weight loss management/medications provided by experienced medical professionals in CO, AZ, MN, KY. Physician provider with over 20 years of medical practice and specializing in weight loss management. We are dedicated to your weight loss journey and will be there every step of the way.

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"

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. 

Education

Medical School: Tufts University School of Medicine – Boston, MA

Internship

Internal Medicine: Newton Wellesley Hospital – Boston, MA

Residency

Diagnostic Radiology: Virginia Mason Franciscan Health – Seattle, WA

Fellowship

Abdominal Imaging & Intervention: Brigham & Women’s Hospital – Boston, MA

Board Certification

American Board of Radiology 2016

 

Education

Medical School: University of Texas Medical School at Houston, Houston,TX

Internship

Internal Medicine: Texas A&M University Health Science Center – Scott & White Hospital, Temple, TX

Residency

Diagnostic Radiology: University of Texas Health Science Center at Houston, Houston, TX

Fellowship

Cardiothoracic Radiology: National Jewish Health/University of Colorado, Denver, CO

Board Certifications

American Board of Radiology 2015

 

Education 

Medical School: Midwestern University, Chicago College of Osteopathic Medicine – Downers Grove, IL

Internship

Internal Medicine: Rush University Medical Center – Chicago, IL

Residency

Diagnostic Radiology: University Hospitals Cleveland Medical Center – Cleveland, OH

Fellowship

Neuroradiology: Barrow Neurological Institute – Phoenix, AZ

Board Certification

American Board of Radiology 2021