Locations
Office
Morris, IL
My office hours
Thursday: 8:00am - 4:00pm
Show morePhone
Insurances accepted
Blue Cross Blue Shield of Illinois
About
Bio
I was raised in River Forest, Illinois. Attended Oak Park and River Forest High School 1966-1970, Purdue University 1970-1974, and Loyola Stritch School of Medicine 1974-1977. I did my Urology residency at Loyola Medical Center and Hines V.A. Medical Center including 6 months at Children's Memorial Hospital in Chicago, IL. 1977-1982. After completing my residency, entered private Urology practice in Joliet, IL in 1982 where I have been for the past 36 years and one of the original founders of Advanced Urology Associates (www.advuro.com). I am a Board-certified Urologist and an active staff member at PSJMC (Joliet), SCH (New Lenox), and Morris Hospital (Morris). I am married and have two wonderful sons. I enjoy golf, road biking, and am a certified Star Level 3 Spinning instructor.
SpecialtiesDoctors may have more than one area of specialty interest. Board certification in a specialty area means the doctor has completed formal training and has practice experience in that specialty, and has passed the certification examination from the corresponding accredited medical specialty board.
Doctors may have more than one area of specialty interest. Board certification in a specialty area means the doctor has completed formal training and has practice experience in that specialty, and has passed the certification examination from the corresponding accredited medical specialty board.
Urology
Licenses
United States: Illinois
Doctor Q&A
1.2K Answers
29 Agrees
The number of answers this doctor has agreed with.
A 34-year-old member asked:
Dr. Gregory Lewisanswered
Urology 46 years experience
See below: 20 to 30 percent of men experience premature ejaculation. Specific behavioral and physical techniques include: “stop-start” technique; “pause and sque... Read More
Created for people with ongoing healthcare needs but benefits everyone.
246 viewsAnswered >2 years ago
A 54-year-old member asked:
Dr. Gregory Lewisanswered
Urology 46 years experience
No: Most common cause of a so-called “third testicle” is a “spermatocele” which is a cyst containing sperm fluid arising from the epididymis adjacent to t... Read More
Created for people with ongoing healthcare needs but benefits everyone.
232 viewsReviewed >2 years ago
A 38-year-old member asked:
Dr. Gregory Lewisanswered
Urology 46 years experience
See below: There is no “one” symptom diagnostic of “prostatitis”. It is a clinical diagnosis based on history, physical exam, and lab studies. Cause may be non-b... Read More
Created for people with ongoing healthcare needs but benefits everyone.
238 viewsAnswered >2 years ago
A 34-year-old member asked:
Dr. Gregory Lewisanswered
Urology 46 years experience
Penicillin shot: If caught early, syphilis may be cured with antibiotics. A single dose of penicillin injected into the muscle is extremely effective in treating the e... Read More
Created for people with ongoing healthcare needs but benefits everyone.
4.9k viewsReviewed >2 years agoMerged
A 21-year-old male asked:
Dr. Gregory Lewisanswered
Urology 46 years experience
See below : Recommend evaluation by a physician (urologist preferred) to determine the cause of your symptoms and to rule out hernia, infection, or any other pote... Read More
Created for people with ongoing healthcare needs but benefits everyone.
316 viewsReviewed >2 years ago
A 32-year-old female asked:
Dr. Gregory Lewisanswered
Urology 46 years experience
See answer : An orthopedic doctor would be the best type of doctor to see for proper diagnosis and treatment. Treatment depends on the exact nature of the injury; ... Read More
Created for people with ongoing healthcare needs but benefits everyone.
402 viewsAnswered >2 years ago
A 30-year-old female asked:
Dr. Gregory Lewisanswered
Urology 46 years experience
See below. : Most cases of vomiting in young children are due to a viral gastroenteritis or flu and will stop without specific medical treatment. Most important to... Read More
Created for people with ongoing healthcare needs but benefits everyone.
402 viewsReviewed >2 years ago
A female asked:
Dr. Gregory Lewisanswered
Urology 46 years experience
See below : Without more information, unable to accurately diagnose. Your symptom of urinary urgency most often is related to either an infection (e.g. UTI); infl... Read More
Created for people with ongoing healthcare needs but benefits everyone.
442 viewsAnswered >2 years ago
A 18-year-old male asked:
Dr. Gregory Lewisanswered
Urology 46 years experience
See below: Your history is consistent with an unusual form of "premature ejaculation". I recommend evaluation by a urologist for a more in-depth history and phys... Read More
Created for people with ongoing healthcare needs but benefits everyone.
933 viewsReviewed >2 years ago
A 34-year-old female asked:
Dr. Gregory Lewisanswered
Urology 46 years experience
See below : In general, at 4 week’s post-TVT you should be healed enough such that non-rigorous intercourse would not cause any damage to your sling or alter the ... Read More
Created for people with ongoing healthcare needs but benefits everyone.
438 viewsAnswered >2 years ago
A 50-year-old female asked:
Dr. Gregory Lewisanswered
Urology 46 years experience
See below : The best suggestion would be to contact your orthopedic surgeon who performed the surgery for recommendations.
Created for people with ongoing healthcare needs but benefits everyone.
562 viewsReviewed >2 years ago
A male asked:
Dr. Gregory Lewisanswered
Urology 46 years experience
See below: Causes of generalized itching (aka “pruritis”) are too many to list. Pruritus can be a symptom of 1) a dermatologic condition such as an allergic resp... Read More
Created for people with ongoing healthcare needs but benefits everyone.
348 viewsAnswered >2 years ago
A 31-year-old female asked:
Dr. Gregory Lewisanswered
Urology 46 years experience
See below: Low hemoglobin (anemia) is not by itself a cause of urinary pain and likely 2 separate issues that require and deserve separate evaluations. Important... Read More
Created for people with ongoing healthcare needs but benefits everyone.
422 viewsReviewed >2 years ago
A male asked:
Dr. Gregory Lewisanswered
Urology 46 years experience
Yes: Assuming there are no other obvious reasons to explain your abnormal PSA values (total PSA 4-10 ng/ml; free PSA <10%), such as recent symptomatic U... Read More
Created for people with ongoing healthcare needs but benefits everyone.
386 viewsAnswered >2 years ago
A 29-year-old male asked:
Dr. Gregory Lewisanswered
Urology 46 years experience
See below: Good question. Cure of CBP based on both the resolution of prostatitis-related symptoms AND on microbiological cure as documented by "repeated" negati... Read More
Created for people with ongoing healthcare needs but benefits everyone.
564 viewsAnswered >2 years ago
A 39-year-old male asked:
Dr. Gregory Lewisanswered
Urology 46 years experience
See below: Though precum can contain viable sperm, in the absence of both vaginal penetration and ejaculation, pregnancy highly unlikely.
Created for people with ongoing healthcare needs but benefits everyone.
269 viewsAnswered >2 years ago
A 17-year-old member asked:
Dr. Gregory Lewisanswered
Urology 46 years experience
See below: There are a number of causes of “lumps” in the scrotum and all scrotal masses need to be examined by a doctor, even if not associated with pain or oth... Read More
Created for people with ongoing healthcare needs but benefits everyone.
238 viewsAnswered >2 years ago
A 54-year-old female asked:
Dr. Gregory Lewisanswered
Urology 46 years experience
Yes: May be nothing serious but the concern would be whether you perforated your eardrum. Even if such is the case, not an emergency and most small perfora... Read More
Created for people with ongoing healthcare needs but benefits everyone.
1.2k viewsAnswered >2 years ago
A male asked:
Dr. Gregory Lewisanswered
Urology 46 years experience
See below : You may have what is not uncommon and known as constitutional delayed puberty: a delay in the onset or physical maturation process that occurs during ... Read More
Created for people with ongoing healthcare needs but benefits everyone.
1.2k viewsReviewed >2 years ago
A 31-year-old female asked:
Dr. Gregory Lewisanswered
Urology 46 years experience
See below: Though false positive and negative Pap tests do occur, this not an uncommon finding: normal Pap and positive HPV 16. Indicates you have high-risk HPV ... Read More
Created for people with ongoing healthcare needs but benefits everyone.
1.2k viewsAnswered >2 years ago
A 37-year-old female asked:
Dr. Gregory Lewisanswered
Urology 46 years experience
See below : Stevens-Johnson syndrome is a "rare" and "unpredictable" reaction. An adverse drug reaction is often the cause, with antibiotics, especially sulfa dru... Read More
Created for people with ongoing healthcare needs but benefits everyone.
1.2k viewsAnswered >2 years ago
A 24-year-old female asked:
Dr. Gregory Lewisanswered
Urology 46 years experience
See below: Classical symptoms for a bladder infection (cystitis): burning with urination, bladder discomfort, urinary urgency and frequency. Blood in urine, inco... Read More
Created for people with ongoing healthcare needs but benefits everyone.
1.2k viewsAnswered >2 years ago
A 46-year-old male asked:
Dr. Gregory Lewisanswered
Urology 46 years experience
See below: The process of achieving and maintaining an adequate erection is a complex interplay between psychological (brain) and physical factors (vascular, ner... Read More
Created for people with ongoing healthcare needs but benefits everyone.
1.2k viewsAnswered >2 years ago
A 20-year-old male asked:
Dr. Gregory Lewisanswered
Urology 46 years experience
See below: Most common risk factors for erectile dysfunction include: aging, diabetes, HTN, high cholesterol, obesity, tobacco use, medications, recreational dru... Read More
Created for people with ongoing healthcare needs but benefits everyone.
1.2k viewsReviewed >2 years ago
A 36-year-old male asked:
Dr. Gregory Lewisanswered
Urology 46 years experience
See below: Clotrimazole (antifungal) most commonly used to treat a yeast (Candida) infection involving the head (glans) of the penis and/or foreskin. Most common... Read More
Created for people with ongoing healthcare needs but benefits everyone.
1.2k viewsReviewed >2 years ago
A 23-year-old male asked:
Dr. Gregory Lewisanswered
Urology 46 years experience
See below: Many causes of urinary frequency. In your age group, UTI most common cause (in females) though your absence of other urinary symptoms do not suggest t... Read More
Created for people with ongoing healthcare needs but benefits everyone.
1.2k viewsAnswered >2 years ago
A 21-year-old male asked:
Dr. Gregory Lewisanswered
Urology 46 years experience
Blackhead (comedo): Your description fits that of a "blackhead" which forms when a hair follicle (pore) in your skin becomes clogged/plugged. Each follicle contains one h... Read More
Created for people with ongoing healthcare needs but benefits everyone.
1.2k viewsAnswered >2 years ago
A male asked:
Dr. Gregory Lewisanswered
Urology 46 years experience
See below : If the "lumps" you feel are separate from the testicle itself as I suspect, then most likely they are "epididymal cysts" (aka spermatocele) which are ... Read More
Created for people with ongoing healthcare needs but benefits everyone.
1.2k viewsAnswered >2 years ago
A 19-year-old female asked:
Dr. Gregory Lewisanswered
Urology 46 years experience
See below: Vaginal discharge is suggestive of a vaginitis with yeast infection being most common cause of a white discharge. There are other causes of vaginitis ... Read More
Created for people with ongoing healthcare needs but benefits everyone.
1.3k viewsAnswered >2 years ago
A member asked:
Dr. Gregory Lewisanswered
Urology 46 years experience
See answer: To circ or not to circ, that is the question?..And an age old debate that cannot be answered in 400 words or less. I too have done hundreds of circumc... Read More
Created for people with ongoing healthcare needs but benefits everyone.
4.8k viewsReviewed >2 years ago
A 32-year-old member asked:
Dr. Gregory Lewisanswered
Urology 46 years experience
See below: There are 3 stages of syphilis: primary (starts about three weeks after exposure, a painless sore called a chancre appears on the genitals, rectum, an... Read More
Created for people with ongoing healthcare needs but benefits everyone.
4.9k viewsAnswered >2 years ago
A 23-year-old member asked:
Dr. Gregory Lewisanswered
Urology 46 years experience
See below : Prostatorrhea is the discharge of prostate fluid from the penis. Most often asymptomatic and a normal physiological discharge occurring in younger men... Read More
Created for people with ongoing healthcare needs but benefits everyone.
246 viewsAnswered >2 years ago
A 27-year-old member asked:
Dr. Gregory Lewisanswered
Urology 46 years experience
See below : Among the many factors that have an impact on prostate inflammation and can exacerbate prostatitis symptoms is stress and one’s choice of foods and be... Read More
Created for people with ongoing healthcare needs but benefits everyone.
246 viewsAnswered >2 years ago
A 42-year-old member asked:
Dr. Gregory Lewisanswered
Urology 46 years experience
See below: The prevalence of ED is increases with age. One notable study showed that ~40% of men are affected at age 40 and ~70% of men are affected at age 70. A... Read More
Created for people with ongoing healthcare needs but benefits everyone.
246 viewsAnswered >2 years ago
A 24-year-old member asked:
Dr. Gregory Lewisanswered
Urology 46 years experience
See below : The great majority of women can not delineate any difference between a natural erection vs that of a prosthesis with vaginal penetration. Regarding th... Read More
Created for people with ongoing healthcare needs but benefits everyone.
246 viewsReviewed >2 years ago
A 21-year-old member asked:
Dr. Gregory Lewisanswered
Urology 46 years experience
Enter an ansDwer sum: ~31 million american adults are living with chronic kidney disease (ckd). The prevalence of chronic kidney disease is increasing: about 25% of the p... Read More
Created for people with ongoing healthcare needs but benefits everyone.
4.9k viewsReviewed >2 years ago
A 23-year-old member asked:
Dr. Gregory Lewisanswered
Urology 46 years experience
See below : A neobladder is an internal urinary diversion in which a segment of the small and/or large intestine is used to form a new (neo) reservoir for urine. ... Read More
Created for people with ongoing healthcare needs but benefits everyone.
238 viewsAnswered >2 years ago
A 31-year-old male asked:
Dr. Gregory Lewisanswered
Urology 46 years experience
No: Finasteride is a 5-alpha reductase inhibitor and at a 1 mg dose is primarily used in the medical management of male pattern hair loss (androgenic alop... Read More
Created for people with ongoing healthcare needs but benefits everyone.
721 viewsReviewed >2 years ago
A 16-year-old female asked:
Dr. Gregory Lewisanswered
Urology 46 years experience
No: Usually requires a fairly significant blunt force to the flank or mid back region to cause an injury to the kidney such as might occur during a severe... Read More
Created for people with ongoing healthcare needs but benefits everyone.
789 viewsReviewed >2 years ago
A 22-year-old male asked:
What happens when a testicle swells up really big & a month later it's flat an small like it's gone?
Dr. Gregory Lewisanswered
Urology 46 years experience
See below: If the swelling was associated with significant pain and discomfort, you likely had an acute “testicular torsion” which cut off the blood supply to th... Read More
Created for people with ongoing healthcare needs but benefits everyone.
232 viewsReviewed >2 years ago
A female asked:
Dr. Gregory Lewisanswered
Urology 46 years experience
May not be needed: Asymptomatic bacteriuria (colonization of urine with bacteria unassociated with signs/symptoms of infection/uti) occurs in small number of healthy ind... Read More
Created for people with ongoing healthcare needs but benefits everyone.
4.6k viewsAnswered >2 years ago
A 20-year-old male asked:
Dr. Gregory Lewisanswered
Urology 46 years experience
See below : Masturbation is a very common and healthy normal behavior, even among people who have a sex partner. It is not physically harmful, though excessive, c... Read More
Created for people with ongoing healthcare needs but benefits everyone.
1.3k viewsReviewed >2 years ago
A 20-year-old female asked:
Dr. Gregory Lewisanswered
Urology 46 years experience
See answer: The appearance of the urethral opening (meatus) does vary amongst individuals. If irritated or inflamed for any reason such as from infection (bacteri... Read More
Created for people with ongoing healthcare needs but benefits everyone.
4.5k viewsAnswered >2 years ago
A 50-year-old female asked:
Dr. Gregory Lewisanswered
Urology 46 years experience
Let your MD know: It appears that most, if not all, of the bowel preps that contain "sodium phosphate" as the primary active ingredient carry this warning but I am una... Read More
Created for people with ongoing healthcare needs but benefits everyone.
4.6k viewsReviewed >2 years ago
A 21-year-old female asked:
Dr. Gregory Lewisanswered
Urology 46 years experience
Check for HPV: Ascus: acronym for atypical cells of undetermined significance and indicates mild cellular cervical changes with an unknown cause. Most common causes ... Read More
Created for people with ongoing healthcare needs but benefits everyone.
4.6k viewsReviewed >2 years ago
A 17-year-old female asked:
Dr. Gregory Lewisanswered
Urology 46 years experience
See answer: Percutaneous nephrolithotomy (pcnl) is a surgical procedure to remove stones from the kidney by a small puncture wound (up to about 1 cm) through the ... Read More
Created for people with ongoing healthcare needs but benefits everyone.
4.6k viewsReviewed >2 years ago
A 20-year-old female asked:
Dr. Gregory Lewisanswered
Urology 46 years experience
See answer : If not a yeast-related irritation, then antifungal cream will not be of any benefit. If truly a skin irritation from using scented pads (contact derma... Read More
Created for people with ongoing healthcare needs but benefits everyone.
4.5k viewsAnswered >2 years ago
A 18-year-old male asked:
Dr. Gregory Lewisanswered
Urology 46 years experience
See answer: In march 2011 a team of researchers assembled 27 male volunteers and analyzed their pre-ejaculate samples within two minutes after producing them. The... Read More
Created for people with ongoing healthcare needs but benefits everyone.
4.5k viewsReviewed >2 years ago
A 28-year-old male asked:
Dr. Gregory Lewisanswered
Urology 46 years experience
Yes: Though there are many causes of ed and many, if not most, pts with ed have a combination of physical and/or psychological factors as the basis for ed,... Read More
Created for people with ongoing healthcare needs but benefits everyone.
4.5k viewsReviewed >2 years ago
A 24-year-old male asked:
Dr. Gregory Lewisanswered
Urology 46 years experience
See answer : If the lump is separate from the testicle, it most likely is a swollen epididymis, epididymal cyst or other benign lesion. If this is the case, then ... Read More
Created for people with ongoing healthcare needs but benefits everyone.
4.6k viewsAnswered >2 years ago
TestimonialsRecommendations and Thank you notes are endorsements given from patients or other doctors.
Recommendations and Thank you notes are endorsements given from patients or other doctors.
5
Recommendations
920
Thank you notes
Dr. James Lin
May 6, 2014
Dr. Lewis' sharp vision/analysis, to-the-point statements, openhearted passion, and broad clear knowledge make him capable to deliver a timely attention to personal concern in urology field. So, I rec...Read More
Jan 21, 2014
This physician's responses are accurate, well phrased and easily understood by the patients requesting advice. He is knowledgeable, succinct and inordinately helpful. Would highly recommend him.
HealthTap member
Jan 24, 2014
Thank you very much Dr Lewis for the information.. It makes sense to me now.
HealthTap member
This was very helpful. Thanks! didnt know you couldnt take stuff like naproxen with diuretics, guess i'll have to stop the diuretics, i usually just take one naproxen a day so as not to retain so much...Read More
HealthTap member
This was very helpful. Thanks! Thank you so much for your reply. Since asking my question I have had an ultrasound scan. My urologist called yesterday to advice it was swallen tissue / skin oedema. Wi...Read More
HealthTap member
This made me feel good. Thanks! Thank you, Dr. Gregory Lewis,
It's just I wanted to be able to focus my sexual energy on more constructive things instead of just masturbating compulsively. Thanks ag...Read More
Education & Training
Medical/Graduate school
Loyola University Chicago Stritch School of Medicine, IL
Graduated 1977MD
Residency
LOYOLA UNIVERSITY MEDICAL CENTER
Awards
Alpha Omega Alpha Honor Society
Top Doctor, First Place, Joliet Region, IL - Summer
2013
Most Influential, Second Place, Joliet Region, IL - Summer
2013
Affiliations
American Urologic Association
Societe Internationale d'Urologie
American Urological Association, North Central Section
Publications
Preparation of Outpatients for Excretory Urography: Is Bowel Preparation With Laxatives and Dietary Restrictions Necessary?
Tracking Down the Source of Hematuria
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