Overview
Mark Nielsen is an Urologist in Johnstown, Pennsylvania. Dr. Nielsen is rated as an Experienced provider by MediFind in the treatment of Enlarged Prostate (BPH). His top areas of expertise are UPJ Obstruction, Obstructive Uropathy, Bilateral Hydronephrosis, Hydronephrosis, and Ureteroscopy. Dr. Nielsen is currently accepting new patients.
Insurance
Accepted insurance can change. Please verify directly with the provider.
Accepted insurance plans:
- EPO
- HMO
- POS
- PPO
- EPO
- HMO
- POS
- PPO
- HMO
- EPO
- HMO
- PPO
- EPO
- PPO
- HMO
- POS
- PPO
- HMO
- INDEMNITY
- POS
- PPO
- EPO
- HMO
- PPO
- HMO
- PPO
- EPO
- PPO
Locations
1111 Franklin St, Suite 410, Johnstown, PA 15905
4000 Miamisburg Centerville Rd, Suite 450, Miamisburg, OH 45342
G. U., Inc.
Geoffrey Bisignani is an Urologist in Greensburg, Pennsylvania. Dr. Bisignani is rated as a Distinguished provider by MediFind in the treatment of Enlarged Prostate (BPH). His top areas of expertise are UPJ Obstruction, Kidney Stones, Hydronephrosis, Ureteroscopy, and Nephrectomy.
UPMC Magee-Womens Hospital (Urology)
Gregory Halenda, MD, is certified in urology by the American Board of Urology. He is affiliated with UPMC Magee-Womens Hospital. Dr. Halenda received his medical degree from Thomas Jefferson University Medical College and completed his residency at Penn State University College of Medicine. Dr. Halenda is rated as a Distinguished provider by MediFind in the treatment of Enlarged Prostate (BPH). His top areas of expertise are Enlarged Prostate (BPH), Kidney Stones, Perirenal Abscess, Prostatectomy, and Ureteroscopy.
Suburban Urological Associates
Justin Isariyawongse is an Urologist in Monroeville, Pennsylvania. Dr. Isariyawongse is rated as a Distinguished provider by MediFind in the treatment of Enlarged Prostate (BPH). His top areas of expertise are Enlarged Prostate (BPH), Prostate Cancer, Familial Prostate Cancer, Ureteroscopy, and Prostatectomy.
Areas of Expertise
MediFind evaluates expertise by pulling from factors such as number of articles a doctor has published in medical journals, participation in clinical trials, speaking at industry conferences, prescribing and referral patterns, and strength of connections with other experts in their field.
Learn more about MediFind’s expert tiers
- Experienced
- Bilateral HydronephrosisDr. Nielsen isExperienced. Learn about Bilateral Hydronephrosis.
- Bladder Outlet ObstructionDr. Nielsen isExperienced. Learn about Bladder Outlet Obstruction.
- Bladder StonesDr. Nielsen isExperienced. Learn about Bladder Stones.
- BoilsDr. Nielsen isExperienced. Learn about Boils.
- CarbuncleDr. Nielsen isExperienced. Learn about Carbuncle.
- EmpyemaDr. Nielsen isExperienced. Learn about Empyema.

