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- 509 N Elam Ave Fl 2, Greensboro, NC 27403
About Dr. Wrenn
John J. Wrenn, MD is a healthcare provider in Greensboro, NC specializing in urology. John trained at University of Tennessee, Hsc, College of Medicine, graduating in 1985. Medicare claims data shows John provided 6,052 services to 1,628 patients. The services billed most often include low osmolar contrast material, 300-399 mg/ml iodine concentration, per ml, bcg live intravesical instillation, 1 mg, and established patient office or other outpatient visit with moderate level of decision making, if using time, 30 minutes or more. This provider record is associated with NPI 1659372019.
Factual summary compiled by Guide.md from public records; not written by this provider.
Education & Training
Specialty
Credentials & Licensing
Medicare information
Exactly as CMS reports it (National Downloadable File, Opt-Out Affidavits, Order & Referring). Not an insurance directory; confirm coverage with the office.
Contact Information
- (336) 274-1114
- Email not available
Practice Locations
509 N ELAM AVE FL 2
Greensboro, NC 27403
Conditions Commonly Evaluated or Treated
Within Urology generally. Availability varies by clinician, training and location — this profile has not been claimed, so nothing here is a personal claim by the provider.
Conditions
Pediatric urology
Reconstructive and complex
- Urethral injury
- Urinary diversion complications
- Urinary tract fistula
- Urologic complications of kidney transplant
Most searched conditions
- Erectile dysfunction
- Kidney stones
- Overactive bladder
- Prostate cancer
- Urinary incontinence in women
- UTI
Bladder and urethra
Kidney and ureter
Male reproductive and sexual health
- Hydrocele
- Male infertility
- Peyronie's disease
- Testicular and scrotal pain
- Testicular cancer
- Testicular torsion
- Testosterone deficiency
- Varicocele
Prostate
Urinary symptoms and infection
- Blood in the urine
- Kidney infection
- Painful urination
- Recurrent urinary tract infections
- Urinary retention
Bladder & Urination
Kidney health
Men's health
Urinary symptoms
Procedures & services
Bladder & bowel
Bladder and urinary
Bladder procedures
- Artificial Urinary Sphincter Implant
- Artificial urinary sphincter implantation
- Bladder Botox Injection
- Bladder instillation therapy
- Botulinum toxin injection into the bladder
- Percutaneous tibial nerve stimulation
- Radical bladder removal
- Sacral neuromodulation
- Sling surgery for stress incontinence
- Transurethral resection of bladder tumor
- Urinary diversion
Diagnostic imaging
Kidney & ureter procedures
Kidney and ureter surgery
- Kidney and ureter removal
- Partial kidney removal
- Pyeloplasty
- Radical kidney removal
- Ureteral reconstruction
- Ureteral reimplantation
Male reproductive
- Hydrocele repair
- Penile implant surgery
- Surgical correction of penile curvature
- Testicle removal
- Varicocele repair
- Vasectomy reversal
Office diagnosis
- MRI-targeted fusion prostate biopsy
- Prostate biopsy
- Transrectal ultrasound of the prostate
- Urinary flow testing
- Urodynamic testing
- Urologic consultation
Prostate
Prostate procedures
- HoLEP Laser Prostate Surgery
- Laser enucleation of the prostate
- Laser vaporization of the prostate
- Prostatic urethral lift
- Rezum Water Vapor Therapy
- Robotic simple prostatectomy
- Transurethral resection of the prostate
- Water-vapor treatment for enlarged prostate
Reconstructive and pediatric
Stone procedures
- Laser treatment of urinary stones
- Nephrostomy tube management
- Percutaneous kidney-stone removal
- Shock-wave treatment of kidney stones
- Ureteral stent placement
- Ureteroscopy
Most searched procedures
Procedures Most Often Billed to Medicare
6,052 services · 1,628 patients · 25 distinct codes
| Procedure | Type | Code | Services | Compared with peers |
|---|---|---|---|---|
| Ultrasound measurement of bladder capacity after voiding | Procedure | 51798 |
117 | As often as other peers in Urology |
| Diagnostic exam of bladder and urethra using an endoscope | Procedure | 52000 |
69 | As often as other peers in Urology |
| Electronic assessment of bladder emptying | Procedure | 51741 |
40 | As often as other peers in Urology |
| Simple insertion of temporary bladder tube | Procedure | 51702 |
36 | As often as other peers in Urology |
| Instillation of anti-cancer drug into bladder | Procedure | 51720 |
32 | Less often than most peers in Urology |
| Non-needle measurement and recording of electrical activity of muscles at bladder and bowel openings | Procedure | 51784 |
24 | As often as other peers in Urology |
| Biopsy of prostate gland | Procedure | 55700 |
15 | Less often than most peers in Urology |
| Insertion of device into abdomen with pressure and urine flow rate study | Procedure | 51797 |
14 | Less often than most peers in Urology |
| Complex measurement of pressure of urine flow in bladder with urethra pressure and voiding pressure studies | Procedure | 51729 |
14 | Less often than most peers in Urology |
| Injection procedure for imaging of bladder during voiding | Procedure | 51600 |
13 | Less often than most peers in Urology |
Source: CMS Medicare public data. Shows how often procedures were billed — not quality of care or patient satisfaction.
Related providers
Connections drawn from the registry and from what providers have told us. A link here is not a referral or an endorsement.
Other urologists at this location 8
Same specialty, same street address — most likely the same department or group.
Also at this address 4
Providers at the same street address. Each files their own registry entry, so a shared practice often appears under several different names.
Other urologists in Greensboro 2
Same specialty, same city.
More connections — 24 related providers in 3 groups
Trained at University of Tennessee, Hsc, College of Medicine 8
Other providers in the same specialty who trained at the same institution.
Class of 1985 at University of Tennessee, Hsc, College of Medicine 8
Providers who graduated from the same medical school in the same year.
Also performs Ultrasound measurement of bladder capacity after voiding 8
Providers in NC who bill this service to Medicare most often.
Common questions
What does Dr. Wrenn specialize in?
Dr. Wrenn is an urologist in Greensboro, NC. That is the designation recorded for this NPI in the federal registry, where it is listed as “Urology”.
NPI registry
Where is Dr. Wrenn located?
Dr. Wrenn is listed at 509 N Elam Ave Fl 2, Greensboro, NC 27403. Addresses come from the NPI registry and can lag a move, so confirm before travelling.
NPI registry
What is Dr. Wrenn's phone number?
The number on file is (336) 274-1114. Contact the office directly to confirm availability and scheduling.
NPI registry
What is the NPI for Dr. Wrenn?
Dr. Wrenn's National Provider Identifier is 1659372019. It is issued by the Centers for Medicare & Medicaid Services and is unique and permanent — it does not change if they move practice.
NPI registry
Where did Dr. Wrenn go to medical school?
Dr. Wrenn attended University of Tennessee, Hsc, College of Medicine, graduating in 1985. This comes from the CMS National Downloadable File.
CMS public data
How much experience does Dr. Wrenn have?
Dr. Wrenn has 41 years experience. Calculated from a graduation year of 1985, reported in the CMS National Downloadable File.
CMS public data
What does Dr. Wrenn do most often?
According to Medicare billing data, Dr. Wrenn performs procedures including ultrasound measurement of bladder capacity after voiding, diagnostic exam of bladder and urethra using an endoscope and electronic assessment of bladder emptying; reads or performs imaging such as x-ray of abdomen, 1 view and limited ultrasound scan behind abdominal cavity; provides treatments such as administration of hormonal anti-neoplastic chemotherapy under skin or into muscle, alongside routine visits and testing. This reflects Medicare patients only and is billing volume, not a measure of quality.
Medicare claims
Is Dr. Wrenn's profile verified?
Not yet. This profile is built from public federal data and has not been confirmed by Dr. Wrenn. If this is you, claiming it is free.
Guide.md
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