
Choosing an Endometriosis Surgeon in Los Angeles
A patient framework for evaluating surgeon training tiers, excision expertise, and whole‑person care in Los Angeles.

Defining What “Best” Means in Endometriosis Surgery
Many patients begin their search for care by typing phrases like “best endometriosis doctor”, “best endometriosis surgeon in Los Angeles”, or “endometriosis specialist near me” into search engines. While these queries are understandable, they tend to produce a mix of clinicians with widely varying levels of training and surgical capability. The term “best” becomes difficult to interpret without a clear understanding of what differentiates one surgeon from another.
This article aims to clarify what “best” actually means in the context of endometriosis care by explaining the major differences in surgical training pathways, operative skills, and case complexity. It provides a structured, objective framework that helps patients identify which level of expertise aligns with their medical needs. In doing so, it moves beyond generic search results and toward a concrete, evidence-based understanding of surgical quality. Selecting the right surgeon for endometriosis is one of the most consequential decisions a patient will make. Endometriosis is a complex disease, and cases vary widely—from superficial peritoneal implants to deep infiltrating endometriosis involving the bowel, bladder, ureters, nerves, and diaphragm. These variations directly influence which type of surgeon is most appropriate. Unfortunately, many patients are not aware that "endometriosis surgeon" can describe clinicians with dramatically different levels of training, experience, and operative capability.
This article outlines the three main categories of surgeons who treat endometriosis, explains the differences in their training, and clarifies what each category is equipped to manage. This framework allows patients to make informed decisions and understand why surgeons with advanced subspecialty backgrounds—particularly those trained in gynecologic oncology—bring a distinct level of surgical expertise for complex cases.
The Role of Surgical Training in Endometriosis Care
Endometriosis often affects anatomical structures well beyond the reproductive organs (Becker et al., 2022; ESGE/ESHRE/WES, 2020). Deep infiltrating endometriosis may involve the bowel, bladder, ureters, and pelvic nerves (Becker et al., 2022; ESGE/ESHRE/WES, 2020; Leborne et al., 2022). Treating these forms of the disease requires precise knowledge of pelvic anatomy and the ability to safely dissect in areas of dense scarring or altered anatomy.
The surgeon's training pathway determines the extent of their operative capabilities. While many surgeons perform laparoscopy or laparoscopic excision, only a small subset have formal subspecialty training in multi-organ pelvic surgery.
Tier 1: General Obstetrician–Gynecologists
General OB-GYNs complete a four-year residency that includes training in a broad range of women’s health concerns. They perform routine laparoscopic procedures and can usually treat mild or superficial endometriosis. However, their residency training does not include advanced retroperitoneal dissection, ureteric surgery, bladder reconstruction, or bowel surgery. As a result, general OB-GYNs typically:
- Treat mild to moderate disease.
- Avoid operating on bowel, bladder, or ureteric endometriosis.
- Rely on ablation or partial excision.
- Refer complex cases or work with co-surgeons.
They serve an important role but are not equipped for advanced disease.
Tier 2: Minimally Invasive Gynecologic Surgeons and High-Volume Excision Surgeons
Some OB-GYNs pursue additional minimally invasive gynecologic surgery (MIGS) training or build high-volume laparoscopic experience. MIGS fellowships focus on advanced laparoscopy, including excision of endometriosis (Cho et al., 2023).
These surgeons generally:
- Perform high-quality laparoscopic or robotic excision.
- Manage superficial to moderately deep infiltrating endometriosis.
- Are much better at fertility-preserving approaches.
- Collaborate with colorectal or urologic surgeons for bowel or ureteric disease and gynecologic oncologists for general pelvic distorted anatomy such as "frozen pelvis."
This group includes many excellent, well-known clinicians; however, fellowship training in MIGS does not encompass the full spectrum of multi-organ pelvic surgery required for the most complex cases. Few have a background and training focused on endometriosis only. Most have broad training which including management of multiple benign gynecologic diseases.
Tier 3: Gynecologic Oncologists Specializing in Endometriosis Excision
Gynecologic oncology is the most surgically intensive fellowship within pelvic medicine (Becker et al., 2022; ESGE/ESHRE/WES, 2020). This training includes extensive experience in:
- Retroperitoneal dissection.
- Ureterolysis and ureter reconstruction.
- Bladder dissection and repair.
- Bowel surgery.
- Management of severe adhesions and altered anatomy.
- Complex multi-organ operations.
Surgeons with this background perform procedures that many other specialists are neither trained nor credentialed to undertake. When these skills are applied to endometriosis, they offer a level of surgical capability that is particularly valuable for:
- Deep infiltrating endometriosis (DIE).
- Multi-organ involvement, including upper abdomen and diaphragm
- Recurrent or failed prior surgeries.
- Cases with extreme adhesions.
- Situations where anatomy is significantly distorted.
Because they can manage bowel, bladder, ureter, and nerve involvement independently, gynecologic oncologists provide a comprehensive surgical solution rather than a multi-surgeon patchwork.
Recent published studies show that gynecologic oncologists are performing benign surgery at a higher rate, in addition to cancer surgery. This means up to 50% or more of their practice is not cancer. However, only a few focus on endometriosis other than serving as intra-operative consultants.
The handful of gynecologic oncologists that do focus on endo internationally excel in this area not just because they are capable of the highest level of pelvic and abdominal surgery but also because they deeply understand the management of this very complex condition. This includes both management of benign endometriosis and the uncommon associated cancers that become more common in older patients or in those with genetic anomalies or strong family history of certain cancers.
Dr. Steven Vasilev is one of the few that focus on endometriosis within this elite category of highest surgical training and expertise. This means any degree of disease can be handled while also applying appropriate organ and fertility sparing approaches because of a deep understanding of endo.
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Schedule ConsultationHow This Framework Helps Patients
The purpose of defining these tiers is not to diminish the skill of surgeons in Tiers 1 or 2. Each tier serves patients with different needs. Mild disease does not require the same level of surgical specialization as deep or recurrent disease, other than to mention that correctly identifying endometriosis during surgery is not always obvious to the untrained surgical eye.
However, patients with complex presentations often benefit substantially from surgeons trained in Tier 3, where multi-organ pelvic surgery is routine rather than exceptional. Understanding these distinctions allows patients to seek care from surgeons whose training aligns with the severity of their disease.
The problem is that, even with imaging of the highest quality, the degree of disease is often not predictable. Thus, it may be prudent to have surgery with the best trained surgeon you can find whose plan resonates with your needs and preferences regarding management of pain and fertility options.
Why Patients Should Consider Subspecialty Expertise for Complex Disease
In advanced endometriosis, the quality and completeness of initial excision strongly influence long-term outcomes (Leborne et al., 2022; Roman et al., 2018). Inadequate removal of disease can result in persistent pain, recurrent symptoms, complications from repeated surgeries, and progressive organ involvement. Training in gynecologic oncology brings anatomical expertise, surgical precision, and extensive operative experience that are well-matched to the highest-complexity cases, especially when multiple organ systems are involved.
The Value of Integrative and Holistic Approaches
Endometriosis is a systemic condition but often triggered at the core by disease that can be surgically addressed. Patients frequently experience gastrointestinal dysfunction, chronic pelvic floor hypertonicity, widespread inflammation, immunomodulation disorders and hormonal imbalance. As such, comprehensive care often extends beyond surgery. Training in integrative and holistic medicine allows a surgeon to incorporate evidence-based strategies that support overall recovery, address systemic contributors to pain, and promote long-term stability.
This combination—advanced surgical capability plus integrative management—is uncommon and highly valuable.
Why Lotus Endometriosis Institute Offers a Distinct Level of Care
For patients seeking the highest level of expertise and comprehensive support, the Lotus Endometriosis Institute provides a uniquely qualified center. The Institute integrates advanced surgical capability, integrative medicine, and a patient-centered philosophy designed for complex endometriosis.
What Sets Lotus Apart
- Single-surgeon mastery: All advanced surgical care is performed by Dr. Steven A. Vasilev, whose training and experience align directly with Tier 3 requirements described above.
- Complete excision capability: Deep infiltrating disease involving bowel, bladder, ureter, or diaphragm can be managed in one setting by a surgeon fully trained in multi-organ pelvic surgery.
- Advanced minimally invasive and robotic command: Oncology-grade precision is applied to endometriosis excision, improving visualization, accuracy, and safety.
- Integrative whole-patient care: Lifestyle medicine, nutrition, and holistic strategies support recovery, reduce chronic inflammation, and reinforce long-term symptom control.
- Dedicated endometriosis focus: For over a decade, the Institute has centered its clinical mission on the management of endometriosis and complex pelvic disease, including cancers related to endo.
Comparison Table: Endometriosis Surgeons in Los Angeles
Category | Dr. Steven A. Vasilev, MD | Typical High-Volume LA Endometriosis Specialist | General OB-GYN With Laparoscopy |
|---|---|---|---|
Board Certifications | 4 (OB-GYN, Gyn Oncology, Integrative, Holistic) | 1–2 | 1 |
Fellowship Training | Gynecologic Oncology (deepest pelvic surgery fellowship) | MIGS fellowship or none | None |
Surgical Focus (Last 10+ Years) | Full focus on endometriosis & complex pelvic disease | Endo + other benign GYN surgeries | Broad OB-GYN practice |
Case Complexity | Deep infiltrating, bowel, bladder, ureter, diaphragm | Moderate–deep; often requires co-surgeons | Mild–moderate |
Experience | 35–40+ years | 10–20 years | 5–15 years |
Academic Roles | Professor, program director, 90+ publications | Some academic involvement | Minimal |
Multi-Organ Surgical Ability | Yes (built into oncologic fellowship) | Sometimes to a limited extent | Rare |
Robotic Surgical Mastery | Oncology-level robotic excision | Advanced laparoscopy and variable robotics | Standard laparoscopy |
Redo/Recurrence Expertise | High | Moderate | Low |
Integrative Medicine | Dual board-certified | Rare and Variable | Minimal |
The Lotus Philosophy
- Advanced excision surgery
- Pelvic floor and pain-focused rehabilitation partners
- Whole-person integrative lifestyle strategies
- Long-term follow-up and individualized planning
To learn more about our surgical program, visit the Institute’s page on Surgery and Advanced Excision.
Conclusion
Patients in the Los Angeles region have access to a wide range of clinicians who treat endometriosis. Understanding distinctions between general OB-GYNs, high-volume minimally invasive specialists, and gynecologic oncologists specializing in complex pelvic surgery empowers patients to choose a surgeon whose training matches the severity of their disease. This framework offers an objective, training-based way to evaluate surgical expertise. For deep infiltrating endometriosis, recurrent disease, multi-organ involvement, or complex pelvic anatomy, selecting a surgeon with advanced subspecialty training can significantly influence long-term outcomes and quality of life.
References
Becker CM, et al. ESHRE guideline: endometriosis 2022. European Society of Human Reproduction and Embryology. This guideline emphasizes the importance of surgeon expertise and recommends referral to specialized centers for deep infiltrating endometriosis. DOI: 10.1016/j.rbmo.2024.104779
Working group of ESGE/ESHRE/WES. Recommendations for the surgical treatment of endometriosis. Part 2: Deep endometriosis. Human Reproduction Open. 2020. This consensus statement details the technical demands of deep endometriosis surgery and highlights the need for advanced surgical capability. PMC7162667
Leborne J, et al. Clinical outcomes following surgical management of deep infiltrating endometriosis. Scientific Reports. 2022. Long-term data confirming acceptable complication rates and reinforcing that complex cases are best managed in experienced centers. DOI: 10.1016/j.rbmo.2025.105178
Roman H, et al. Conservative surgery versus colorectal resection in deep endometriosis. Human Reproduction. Compares outcomes of different surgical techniques for bowel endometriosis, showing both the complexity and the nuances of advanced-stage management. DOI: 10.1093/humrep/dez217
Cho M, et al. Minimally invasive surgery for deep endometriosis. Reviews minimally invasive approaches and reiterates the need for comprehensive knowledge of pelvic anatomy and multi-organ surgical skill.
Quick Answers
How rare is endosalpingiosis?
Endosalpingiosis is generally considered uncommon, but “how rare” it is depends heavily on who’s being studied and how it’s found. Many cases are discovered incidentally on pathology—meaning tissue is identified under the microscope after surgery done for other reasons—so it’s likely underrecognized in the general population. In other settings (like surgical cohorts), it may appear more often simply because more tissue is being sampled and examined carefully.
What matters most for patients is that endosalpingiosis can be confused with endometriosis on imaging or even at surgery, yet it doesn’t always behave the same way clinically. If you’ve been told you have endosalpingiosis and you also have pelvic pain, bowel/bladder symptoms, or fertility concerns, our team can help interpret what that finding means in the context of your symptoms and operative/pathology reports. You’re welcome to explore our educational content on related endometriosis and uterine conditions, and reach out to schedule a consultation if you want a personalized plan.
What is pelvic dissection in endometriosis surgery?
Pelvic dissection in endometriosis surgery means carefully separating and opening tissue planes in the pelvis so we can clearly see normal anatomy and remove disease safely. Endometriosis can cause inflammation and scarring that “glues” organs together (sometimes called a frozen pelvis), so dissection is often the step where we free adhesions and restore normal relationships between the uterus, ovaries, bowel, bladder, and pelvic sidewalls.
In practical terms, pelvic dissection may include identifying and protecting critical structures like the ureters, bladder, bowel, blood vessels, and pelvic nerves before excising endometriosis at its roots. This is where surgical precision matters: the goal is to fully address disease while minimizing injury to healthy tissue, especially in complex or re-operative cases. If you’re seeing this term on an op note or surgical plan, it usually reflects the complexity of the anatomy and the deliberate work needed to make excision both complete and safe—our team can walk you through exactly what was dissected and why in your specific case.
How does estrogen affect the endometrium?
Estrogen is one of the main hormones that drives endometrial growth. In the first half of the menstrual cycle, rising estrogen signals the endometrium to thicken and rebuild after a period, preparing the uterus for a possible pregnancy. It also influences the local immune and inflammatory environment in the uterus, which is part of why hormonal shifts can change bleeding patterns and pain.
When estrogen’s growth signals are strong—and progesterone’s “calming” effect is weaker than expected (often described as progesterone resistance)—the endometrium can behave in a more persistently inflamed, reactive way. This hormone–inflammation pattern is especially relevant in estrogen-dependent conditions like adenomyosis and endometriosis, where tissue similar to the endometrium can contribute to ongoing symptoms. If you’re trying to make sense of heavy bleeding, severe cramping, or cycle-linked pelvic pain, our team can help you connect the hormonal biology to what you’re feeling and review next steps for diagnosis and treatment.
What does a frozen uterus mean with endometriosis?
A “frozen uterus” isn’t a separate diagnosis—it’s a descriptive term surgeons use when the uterus is essentially stuck in place because endometriosis-related inflammation has caused dense scarring (adhesions). Instead of the uterus moving freely, it may be tethered to nearby structures like the bowel, bladder, ovaries, or pelvic sidewall, sometimes pulling the uterus into an abnormal position and making pelvic anatomy hard to distinguish.
This finding often suggests more advanced disease, such as deep infiltrating endometriosis and/or significant adhesions from prior inflammation or surgery, and it can help explain symptoms like deep pelvic pain, painful sex, bowel or bladder symptoms, or pain that doesn’t match what a routine exam shows. In these cases, surgery is less about “burning spots” and more about carefully restoring normal anatomy—freeing organs, protecting ureters and bowel, and removing endometriosis at its roots. If you’ve been told your uterus is “frozen,” our team can help you understand what that implies for imaging, surgical planning, and which adjacent organs may need to be evaluated as part of a complete excision strategy.
What are peritoneal pockets in endometriosis?
Peritoneal pockets are small “indentations” or fold-like defects in the peritoneum—the thin lining that covers the pelvic organs and inner abdominal wall. In endometriosis surgery, we may see these pockets as tucked-in areas or little pits in the peritoneal surface, and they can be associated with superficial peritoneal endometriosis or early/developing disease patterns.
These pockets matter because endometriosis doesn’t always look like obvious black or red implants; it can hide within subtle anatomic changes, scarring, or altered peritoneal contours. In the operating room, careful inspection and technique are important so that disease within or around a peritoneal pocket isn’t missed or only treated on the surface. If you’ve been told you have “peritoneal pockets,” our team can help you understand what that finding may mean in your case—based on your symptoms, imaging, and whether deeper structures (like bowel, bladder, or ureters) could also be involved.

