Nicole Rowe, MD
Family Physician
28267 Highway 74
Evergreen, CO 80439
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66 providers
Availability last updated 12/16/2025
Nicole Rowe, MD
Family Physician
28267 Highway 74
Evergreen, CO 80439
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Nationally Board Certified
Physician Assistant
Heather Whiting is a native of Colorado and has been fortunate to serve the community as a physician assistant and patient care advocate since 2003.
She began her pursuit of a career in medicine at the University of Northern Colorado where she earned a Bachelors and a Masters degree in Human Biology. Upon graduation, Heather worked at the University of Colorado Hospital as a Rehab Therapy Technician. She later graduated from the Physician Assistant program at Red Rocks Community College in Lakewood, Colorado with honors and earned a second Master’s degree, a Masters of Medical Science from Saint Francis University.
Heather is very passionate about medicine and believes in caring for the whole patient. She enjoys working side by side with patients striving to achieve optimal physical and emotional health. She is experienced in treating patients across a wide spectrum of disease states and ages, from adolescence to geriatrics. She has special interest in disease prevention and health promotion.
Heather loves spending time with her husband and two sons. They enjoy the beautiful Rocky Mountains, camping, hiking, biking, and snowboarding.
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Heather Whiting, PAC
Family Physician
5420 South Quebec Street
Suite 100
Greenwood Village, CO 80111
Medical School: Loyola University Stritch School of Medicine – Chicago, IL
Internal Medicine: Exempla St. Joseph Hospital – Denver, CO
Diagnostic Radiology: University of Colorado – Aurora, CO
Interventional Radiology: Medical College of Wisconsin – Milwaukee, WI
American Board of Radiology 2016
Tony Brown, MD, is the Medical Director and a board-certified vascular and interventional radiologist specializing in pelvic stabilization and kyphoplasty at RIA Endovascular. Dr. Brown sees patients at the practice's location in Greenwood Village, Colorado.
He pursued medical school at Loyola University Stritch School of Medicine in Chicago, Illinois, followed by an internship in Internal Medicine at Exempla St. Joseph Hospital in Denver, Colorado, and a residency in Diagnostic Radiology at the University of Colorado in Aurora.
Dr. Brown completed his fellowship in Interventional Radiology at the Medical College of Wisconsin in Milwaukee.
He has contributed to a number of publications and presentations, such as:
In 2016, Dr. Brown obtained board certification from the American Board of Radiology (ABR).
He is committed to caring for patients at RIA Endovascular and truly provides exceptional care.
Dr. Anthony Brown, MD
Radiologist
8200 E Belleview Ave
Suite 600E, East Tower
Greenwood Village, CO 80111
Evelyn Clark, MSN, ANP, NP-C
Family Physician
1974 Blue Mesa Ct
Loveland, CO 80538
Tamara Johnson, MD
Family Physician
6825 S. Galena St
Centennial, CO 80112
As a first-generation American raised in Colorado by immigrant parents from Guyana and Poland—both of whom proudly served in the U.S. military—Oswaldo Grenardo, MD, MBA, MSHA, FAAFP, grew up with a deep respect for accountability, service, and cultural diversity. These early influences, coupled with a desire to improve the healthcare experience for underserved individuals, led him to start his own private practice, OG Health, in Greenwood Village, Colorado.
With over 30 years of experience in family medicine and healthcare leadership, Dr. Grenardo brings a unique blend of compassionate, personalized care and executive-level insight to his patients at OG Health, the practice he founded to reflect his vision of whole-person care. He believes great care begins with a genuine relationship—where patients feel seen, heard, and truly known by their physician.
Dr. Grenardo has held numerous high-impact roles throughout his career, including Chief Medical Officer and Chief Diversity and Inclusion Officer at Centura Health/CommonSpirit Health, Medical Director of its Clinically Integrated Network, and Dean of Admissions at the University of Colorado School of Medicine. His leadership has touched every level of the healthcare system, from clinical integration to medical education and health equity.
A Stanford University graduate with a degree in Human Biology, Dr. Grenardo later earned dual master’s degrees in Business Administration and Health Administration before completing his MD at the University of Colorado School of Medicine. He completed his Family Medicine residency at Rose Medical Center in Denver.
Outside of medicine, Dr. Grenardo is a proud father, sports enthusiast, former Stanford football player, bonsai hobbyist, and certified barbecue judge. He remains active in the community, serving on multiple nonprofit boards, including the American Heart Association Colorado, the Colorado Health Foundation, and the Boys & Girls Clubs of Metro Denver—working to improve health and opportunity across Colorado.
Dr. Oswaldo Grenardo, MD, MBA, MS
Family Physician
385 Inverness Pkwy
Ste 130
Greenwood Village, CO 80112
Jodie Gahn-Stahley began her health-care career in 1990 as a US Fleet Marine Force Corpsman where she treated Navy and Marine Corps personnel and their families at Camp Pendleton, CA and Naval Medical Center San Diego, CA. After four years, she separated from active duty and continued her military career in the US Naval Reserves supporting Fleet Hospital 23, Field Medical Unit as a combat medical technician.
Jodie grew up in southeastern Wisconsin and attended the University of Wisconsin- Madison for undergraduate training in 1995. While pursuing her degree, she worked as a multi-specialty medical assistant at Dean Medical Center in Madison, Wisconsin. Her physician assistant training was completed at College of Osteopathic Medicine - Des Moines University. Since then, she has been dedicated to providing quality and cost- effective health care in the South Denver Metro area. Her outpatient medical practice spans the pediatric through geriatric
population with a focus on preventative medicine, disease management and urgent care.
In her personal time, she and her husband, John, enjoy a multitude of outdoor adventures whether hiking in the forest or boating and fishing in Colorado's mountain lakes and streams with their two dogs Max and Elke. An aspiring home chef and foodie, Jodie is known to whip up a tasty meal for her family and friends.
Jodie Gahn-Stahley, PA
Family Physician
1189 S. Perry St.
Suite 230
Castle Rock, CO 80104
Douglas Hallmark, MD, is an experienced and highly respected family medicine practitioner at Douglas Family Medicine who is delighted to be serving the population of Castle Rock, Colorado, and the surrounding areas.
Dr. Hallmark grew up in Colorado, graduating from Arapahoe High School in Centennial in 1970. He graduated magna cum laude with a degree in Chemistry from Baylor University in Waco, Texas, then pursued his medical degree at the University of Texas Medical Branch (UTMB) in Galveston. Dr. Hallmark graduated from UTMB in 1979 and practiced in East Texas for the next 10 years.
Dr. Hallmark’s life-long desire was to be a small-town family doctor who not only served his patients but developed close relationships with them. He has achieved this goal in his practice of medicine in Castle Rock for the past 20 years, providing exceptional medical care that recognizes the importance of treating every patient as a unique individual. By combining his considerable experience of primary care with the latest advancements in medicine, Dr. Hallmark is able to offer residents of Castle Rock the most up-to-date treatments available with the personal touch of hometown care.
Dr. Hallmark and his wife, Marie, have been married for over 30 years and have six children and one grandson.
Dr. Belton Hallmark, MD
Family Physician
1189 S. Perry St.
Suite 230
Castle Rock, CO 80104