Dr. John James Kowalczyk, DO

Dr. Kowalczyk practices at Wilshire Center for Ambulatory Surgery, Inc. in Los Angeles, California.

Dr. Kowalczyk's NPI, 1548254089, was assigned on September 9, 2005. Dr. Kowalczyk graduated from Chicago College of Osteopathic Medicine at Midwestern University in 1989. Dr. Kowalczyk holds California license 20A6818.

Dr. Kowalczyk's primary practice is Wilshire Center for Ambulatory Surgery, Inc., at 1127 W Wilshire Blvd, Los Angeles, CA 90017 in Los Angeles County. The practice phone is (213) 250-7243.

Dr. Kowalczyk's primary practice is Wilshire Center for Ambulatory Surgery, Inc. in Los Angeles, California. Dr. Kowalczyk is also affiliated with PIH Health Good Samaritan Hospital. The medical group on file is Urology Group of Southern California. Dmand AI also links Dr. Kowalczyk to 2 more hospitals, 6 medical groups, 4 group practices and clinics and 1 physician office, each named with a free account.

Dmand AI tracks the electronic health record (EHR) system at each site where Dr. Kowalczyk practices, 8 sites in all. Vendor and product names are available with a free account.

Urology is Dr. Kowalczyk's primary specialty in the NPI Registry, under taxonomy code 208800000X. Dmand AI has Dr. Kowalczyk's licenses on file in 4 states: California, Arizona, Indiana and Illinois.

Dmand AI lists bladder disease, enlarged prostate, enlarged prostate transurethral surgery (TURP), erectile dysfunction, kidney cysts, kidney stone disease, pelvic prolapse and prostate cancer among the conditions Dr. Kowalczyk treats.

CMS data shows 2,168 Medicare services from Dr. Kowalczyk across 19 procedure codes in 2024, for 517 Medicare patients. Medicare paid $97,760 for them.

CMS counts 517 Medicare patients who saw Dr. Kowalczyk in 2024. The largest group is 65 to 74, with 269 patients. 75% of them have high blood pressure, and 75% have high cholesterol. 68% are also on Medicaid. Their average risk score is 1.55, where 1.00 is the Medicare average, so they are sicker than most Medicare patients.

Across all payers, Dmand AI patient panel data puts Dr. Kowalczyk's median patient age at 50, with 35% women.

In 2024, Dr. Kowalczyk wrote 4,704 Medicare Part D claims for 767 patients. 89% of them were for generic drugs. CMS names the drug for 4,567 of them, across 29 drugs with 11 or more claims each, at $380,553 in total drug cost. In 2023, CMS named 4,817 claims across 33 drugs.

Dr. Kowalczyk accepts Medicare assignment, so Medicare's approved amount is taken as full payment. CMS counts 11 procedures of prostate resection by Dr. Kowalczyk, more than 60% of the clinicians it reports for that procedure.

Dmand AI links 21 papers to Dr. Kowalczyk, published from 2011 to 2024. 2022 was the busiest year, with 5. The most frequent topics are Pain, Postoperative, Analgesics, Opioid and Cesarean Section. Dr. Kowalczyk has published most often in Int J Obstet Anesth. Dr. Kowalczyk's most frequent co-authors are Brendan Carvalho, MD, Amnon Asher Berger, MD, PhD and Renard Ronaldo Jerome, MD.

Dmand AI links Dr. Kowalczyk to 6 clinical trials, 4 of them phase 3 studies. 2 are still active or recruiting. Conditions studied include Non-Muscle Invasive Bladder Neoplasms, Carcinoma, Transitional Cell and Blood Loss, Surgical. GlaxoSmithKline sponsors the most, 2.

CMS Open Payments shows 762 general payments to Dr. Kowalczyk from 78 drug and device companies from 2016 to 2025. Food and beverage make up the largest share, 74% of the total. ViiV Healthcare Company paid the most, $4,145. It also lists 3 research payments totaling $340 in 2019.

Dr. Kowalczyk serves on Well Being committee.

Dr. Kowalczyk graduated from Chicago College of Osteopathic Medicine at Midwestern University in 1989.

Dr. Kowalczyk is in network with 19 carriers, including Aetna, Blue Cross Blue Shield of Michigan and United Healthcare. PPO plans come from the most carriers, 12. Check the plan with the practice before a visit.