Dr. Johnny Yi

Synopsis

A urogynecologist with deep excision training, embedded in one of the most multidisciplinary endo teams in the country

Dr. Yi performs robotic excision surgery for endometriosis, trained under Dr. Javier Magrina at Mayo Clinic Arizona and operates as part of a dedicated endo and pelvic pain team. His primary specialty is urogynecology, with a heavy focus on endometriosis. Dr. Yi practices inside the Mayo Clinic system, where the gynecology team works closely together and patients are assigned based on their specific clinical picture rather than choosing a surgeon independently. For patients whose endo involves bladder or pelvic floor complexity, being paired with a urogynecologist who also performs excision and collaborates with colorectal and GYN oncology may be exactly the right fit.

Endometriosis Focus

Urogynecologist with a documented passion for endo and pelvic pain; excision-trained under Magrina

Dr. Yi's primary specialty is urogynecology and reconstructive pelvic surgery, practiced within the Department of Medical and Surgical Gynecology at Mayo Clinic Arizona. Endometriosis is a significant and documented part of the practice, not the sole or publicly stated primary focus. In a 2019 statement posted to Nancy's Nook, Dr. Yi wrote directly: "I am currently a practicing urogynecologist here and also did 2 of my 3 years of fellowship at Mayo Arizona under the guidance of Dr. Magrina. I also have a passion for treating patients with chronic pelvic pain and endometriosis. I perform robotic surgery for excision of endometriosis and tackle multi-systemic bowel and bladder disease in coordination with my GYN Oncologists or Colorectal surgeons."

Healthgrades treatment frequency data lists endometriosis as very high, meaning Dr. Yi treats it much more often than similar providers. Patient accounts across Nancy's Nook and Healthgrades confirm complex Stage IV cases, including hysterectomy, salpingectomy, cystectomy, partial bowel resection, and excision of vaginal endometriosis, performed as part of the Mayo team.

Multidisciplinary Approach

Operates within a coordinated Mayo team; colorectal, GYN oncology, and pelvic floor PT all documented

In his own words, Dr. Yi coordinates complex bowel and bladder disease with GYN oncologists and colorectal surgeons within the Mayo Clinic team. Patient accounts document this in practice: one Nancy's Nook account describes Stage IV excision, hysterectomy, salpingectomy, cystectomy, and partial bowel resection performed with Dr. Yi's fellow Dr. Mansour and an assist from Dr. Magtibay in a single surgery. A 2021 Endo Summit presentation co-presented with Dr. Dana McKee addresses trigger point and myofascial pain in endo patients and covers physical therapy, trigger point injections, and Botox as part of a multidisciplinary pain treatment framework, indicating active integration of pelvic floor and pain management approaches.

A 2020 Nancy's Nook account describes Dr. Yi referring a patient for a deep intravenous ultrasound that identified deep infiltrating endometriosis throughout the bowel, demonstrating active diagnostic coordination before surgery. Multiple patient accounts describe being referred for pelvic floor physical therapy as part of their care.

Diagnosis Methods

Deep endovaginal ultrasound protocol; published research on improving ultrasound sensitivity for endo

Dr. Yi is a co-author on a published protocol for sonographer-acquired endovaginal imaging designed to improve detection of endometriosis beyond ovarian endometrioma, published in Abdominal Radiology in 2020. The protocol addresses a recognized gap in standard US imaging practices and specifically targets structures including the rectosigmoid colon and uterosacral ligaments. A 2020 patient account in Nancy's Nook describes Dr. Yi referring her for a deep intravenous ultrasound, a 45-minute transvaginal study, which identified deep infiltrating endometriosis throughout the bowel that had been missed in prior surgical evaluation. A separate publication co-authored with Dr. Megan Wasson documents cystoscopy catching bladder endometriosis missed on laparoscopic view, arguing for cystoscopy as a complementary diagnostic tool in patients with chronic pelvic pain and urinary symptoms.

Educational Presence

Published researcher, AAGL repeat presenter, Endo Summit speaker; active within the Mayo educational ecosystem

Dr. Yi has four endo-related publications confirmed in peer-reviewed journals. These cover a sonographer-acquired ultrasound protocol for deep endometriosis; cystoscopy as a diagnostic tool for bladder endometriosis; a case report of tubal remnant with rectosigmoid stricture in the background of endometriosis; and a systematic review and meta-analysis of pregnancy rates after surgical resection of deep infiltrating endometriosis. The pregnancy rates paper was co-authored with Dr. Javier Magrina.

Dr. Yi presented at Endo Summit Live 2021, a dedicated endometriosis education event, alongside Dr. Dana McKee of Mayo Clinic. The session covers trigger point and myofascial pain in endo patients in detail, including physical therapy, oral medications, trigger point injections, and Botox, and includes cadaver pelvic floor video. This is surgeon-participated endo-specific educational content, not institution marketing.

AAGL presence is extensive: Dr. Yi has served as abstract and video review grader at the Annual Global Congress on Minimally Invasive Gynecology across multiple years from 2014 through 2025, received the 2018 Best Abstract Award on Robotic Technology, and held leadership roles including Chair of the Urogynecology Special Interest Group (2018) and Chair of the Professional Development CME Committee (2016-2017). He is also a contributor to a BackTable OBGYN podcast episode on single port robotics in minimally invasive GYN surgery (2024).

Institution-produced content includes a Mayo Clinic Connect Facebook Live Q&A on pelvic floor disorders. No personal social media accounts found for Dr. Yi.

Professional memberships include Fellow of the American College of Obstetricians and Gynecologists, Member of the American Association of Gynecologic Laparoscopists, Member of the American Urogynecologic Society, and AAGL Practice Committee member (2019 to present).

Patient Feedback

Patterns Across Patient Feedback

Post-Surgical Care

No public information found

No public information found on post-surgical follow-up structure, who conducts follow-up appointments, how soon after surgery the first follow-up occurs, or the duration of post-surgical monitoring. No public statement found on approach to hormonal treatment after surgery.

Philosophy and Fit

Multidisciplinary, whole-patient approach; best fit for complex or multi-system cases

In his own 2019 statement, Dr. Yi describes his practice philosophy directly: "As a whole, we have an active practice in treating patients with chronic pelvic pain and have a dedicated multi-disciplinary effort to treat the whole patient and all of her sources of pelvic pain." Patient accounts reinforce this framing. A 2024 Healthgrades reviewer describes Dr. Yi as "a multi-dimensional thinker, keen to problem solve using all of the tools in the toolbox even when that means personally reaching outside his expertise on a patient's behalf."

Because Dr. Yi's primary specialty is urogynecology, patients whose endo presentation involves significant bladder, urinary, or pelvic floor complexity may be a particularly strong clinical match. Patients seeking a surgeon whose sole focus is endometriosis should weigh that context against the documented excision training and multidisciplinary Mayo team practice.