
At Urology Associates, our mission has always been to provide exceptional urologic care with expertise, compassion, and innovation. That commitment is reflected in the physicians who care for our patients every day—and recently, it was recognized in a meaningful way.
We are proud to congratulate Brad E. Bell, MD, FACS, and Daniel J. Mazur, MD, on being named to the 5280 Top Doctors list in Denver. This prestigious recognition highlights their clinical excellence, advanced training, and ongoing commitment to delivering high-quality, patient-centered urologic care throughout the Denver metro area.
Each year, 5280 Magazine publishes its respected Top Doctors list, honoring physicians across Colorado who are nominated by their peers for outstanding clinical skill, leadership, and trust within the medical community. Being selected is one of the most meaningful distinctions in Denver medicine and reflects consistent excellence in patient care.
Dr. Bell and Dr. Mazur’s inclusion underscores their reputations as leading urologists in Denver, Colorado.
What Is the 5280 Top Doctors Award?
The 5280 Top Doctors list is a peer-nominated recognition program highlighting physicians who are highly regarded by other doctors in the Denver medical community.
Physicians are selected based on:
- Clinical expertise and outcomes
- Professional reputation among peers
- Leadership in the medical community
- Commitment to patient care
- Training and experience
Being named a 5280 Top Doctor in Denver represents recognition among the region’s most respected physicians.
A Commitment to Patient-Focused Care
At Urology Associates, our doctors and staff work as a team so patients receive consistent care with dedicated providers who personally know them and their condition—and are devoted to getting them back to life and health.
We believe exceptional care comes from understanding the whole patient, including open communication about medical options, concerns, and goals. Dr. Bell and Dr. Mazur exemplify this approach in every aspect of their practice.
Excellence in Urologic Care
Dr. Brad E. Bell provides comprehensive care for a wide range of urologic conditions, including:
- Non-scalpel vasectomy procedures
- Urologic oncology
- Benign prostatic hyperplasia (BPH)
- Kidney stone disease
- Urinary incontinence and voiding dysfunction
- Neurourology and complex conditions
His approach focuses on individualized treatment plans, clear communication, and evidence-based care.
Dr. Daniel J. Mazur is a fellowship-trained specialist in male fertility and men’s health, with expertise in:
- Male infertility evaluation and treatment
- Vasectomy reversal
- Testosterone therapy
- Erectile dysfunction
- Peyronie’s disease
- Microscopic sperm retrieval procedures
His advanced training in male reproductive medicine and microsurgery allows him to provide highly specialized care for complex fertility and sexual health conditions.
Recognized by Peers, Trusted by Patients
The 5280 Top Doctors recognition is especially meaningful because it is based on nominations from fellow physicians who understand the demands of delivering exceptional care.
Dr. Bell and Dr. Mazur’s inclusion reflects the respect they have earned throughout their careers in the Denver medical community.
At Urology Associates, patients value both physicians for their thoughtful communication, clinical expertise, and commitment to helping them make informed decisions about their care.
A Well-Deserved Honor
We extend our sincere congratulations to Brad E. Bell, MD, FACS, and Daniel J. Mazur, MD, on this outstanding achievement. Their recognition as 5280 Top Doctors reflects years of dedication, advanced training, and a shared commitment to patient-centered care.
We are proud to celebrate Dr. Bell and Dr. Mazur and grateful for the exceptional care they provide to patients across the Denver metro area.
Congratulations again to both physicians on being named 5280 Top Doctors in Denver.

