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Advanced Multidisciplinary Care for Endometriosis at Every Stage

Our surgeons have operated together for years and have many years of experience in treating endometriosis – preserving function, minimizing recurrence, and restoring quality of life.
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Your Path to Relief And a Life You Love Starts Here

Endometriosis is when tissue similar to the uterine lining grows outside the uterus, often on the ovaries, pelvic lining, bowel, bladder, or diaphragm. It can cause pelvic pain, painful sex, GI and urinary symptoms, fatigue, and fertility challenges. Many patients spend years searching for answers. We see you.

At the Comprehensive Endometriosis Institute, we listen first and build a plan that protects what matters to you. Our surgeons have operated together for years. We specialize in meticulous excision (removing disease, not just burning it), aim to preserve function whenever safely possible, and work to minimize recurrence so you can get your life back.

Hear from our team on how our surgeons plan together, operate together and shape one approach around each patient.

— TREATMENTS & APPROACHES —

Surgical Specialties

Laparoscopic excision surgery

Laparoscopic excision surgery

Complete removal (not burning) of endometriosis with keyhole incisions and high-definition visualization. The goal: thorough disease clearance while protecting healthy tissue.
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Robotic-assisted laparoscopic surgery

Robotic-assisted laparoscopic surgery

For difficult anatomy or deep disease, robotic instruments provide enhanced dexterity and 3D vision—useful in tight spaces and multi-organ involvement.
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Excision of bowel endometriosis

Excision of bowel endometriosis

Shaving, discoid, or segmental resection as indicated, performed jointly with colorectal surgery to relieve pain, restore function, and address strictures or obstruction.
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Excision of diaphragmatic endometriosis

Excision of diaphragmatic endometriosis

Targeted removal of lesions on the diaphragm—often the source of cyclical shoulder or chest pain—with thoracic collaboration when full-thickness repair is needed.
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Adhesiolysis (scar-tissue release)

Adhesiolysis (scar-tissue release)

Meticulous lysis of pelvic adhesions to free organs, reduce pain, and improve mobility—often paired with excision for optimal results.
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Hysterectomy (with or without oophorectomy)

Hysterectomy (with or without oophorectomy)

Reserved for select, refractory cases or coexisting adenomyosis. Always discussed in context of goals, fertility, and comprehensive excision of extra-uterine disease.
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—Trusted Experts —

Meet the doctors

Three surgeons, one rhythm. You’ll feel it in clinic and in the OR—care that’s coordinated, unhurried, and centered on you.
Fellowship-trained at Cedars-Sinai. Focused on precise excision of deeply infiltrating disease, complex hysterectomy, fertility-sparing myomectomy, and advanced hysteroscopy. Patients value his clear explanations and steady, function-preserving approach.

Raanan Meyer, MD

Available for virtual consults

Director, Comprehensive Endometriosis Center; Minimally Invasive Gynecologic Surgery
Board-certified in general and colorectal surgery, trained at Cedars-Sinai and Stony Brook. Focused on bowel endometriosis, from shaving to discoid and segmental resection, plus minimally invasive and robotic colorectal surgery. Patients value his work to restore bowel function and preserve continence.

Moshe Barnajian, MD

Available for virtual consults

Double Board-Certified General & Colorectal Surgeon; Leader in Robotic Surgery
Associate Professor of Surgery at Cedars-Sinai who trains surgeons internationally in robotic technique. Focused on robotic and minimally invasive resection of bowel endometriosis, and on complex pelvic surgery with nerve-sparing approach. Patients value the least invasive route to a complete operation.

Yosef Nasseri, MD, FACS, FASCRS

Available for virtual consults

Double Board-Certified General & Colorectal Surgeon; Leader in Robotic Surgery

— Our Process

Multidisciplinary Surgical Approach for Endometriosis in Los Angeles

Endometriosis rarely affects just one structure. When bowel, bladder, ureter, or diaphragm are involved, our gynecologic, colorectal, and (when needed) urologic/thoracic surgeons plan together and operate together. That means fewer staged procedures and faster, more predictable recovery.

How we do it:

01

Integrated pre-op workup

Targeted ultrasound/MRI protocols, stool/urinary symptom screening, and fertility goals inform a single surgical map.

02

Joint case conference

Surgeons review imaging side-by-side to agree on access, extent of excision, nerve-sparing opportunities, and contingency plans.

03

Definitive excision

Laparoscopic or robotic removal of all visible disease, plus adhesiolysis and organ repair (discoid/segmental bowel resection, ureterolysis, partial diaphragmatic resection) as indicated.

04

Function First

We prioritize organ preservation and nerve-sparing techniques whenever safely possible.

05

Recurrence reduction

Thorough excision, meticulous hemostasis, and tailored post-op strategies (e.g., pelvic PT, cycle suppression when appropriate) aim to minimize recurrence.

— THE JOURNEY —

Endometriosis Diagnosis Journey

We make the path clear and kind.

Your story comes first

We map symptoms across your cycle, work, intimacy, and daily life.

Thoughtful evaluation

Expert ultrasound/MRI when deep disease is suspected; we explain results in plain language.

Shared decisions

We discuss meds, pelvic PT, and when surgery is (or isn’t) the right next step.

One plan

If bowel or urinary tract are involved, our surgeons plan together so you aren’t juggling opinions.

Definitive care

Excision provides diagnosis (biopsy) and treatment in the same setting.

Recovery with a roadmap

Simple timelines, red-flag guidance, and direct access back to the team.

— Schedule a Consultation —

Don’t Wait for Relief. Take the First Step Today.

Book your in-person or virtual consultation today
— Our Blogs—

Recent Articles

— Faqs —

Frequently Asked Questions

01. What is endometriosis?
Endometriosis is a chronic condition where tissue similar to the uterine lining grows outside the uterus, often causing pelvic pain, heavy periods, and fertility challenges. It is common but frequently underdiagnosed, which is why specialized care is essential.
The most common symptoms include severe menstrual cramps, pelvic pain outside of periods, pain during sex, digestive discomfort, and difficulty getting pregnant. If these symptoms affect your daily life, we recommend scheduling an evaluation.
Our approach includes medical therapy, minimally invasive surgery, pain management, fertility support, and holistic care such as nutrition and lifestyle guidance. We create a treatment plan that’s tailored specifically to your needs.
Not always. While laparoscopic surgery is often the most accurate way to diagnose and treat endometriosis, many patients benefit from medication, non-surgical therapies, and lifestyle adjustments. Surgery is recommended only when it is the best option for long-term relief.
Simply book a consultation through our website or call our office. Our specialists will listen to your story, review your history, and guide you toward the right next steps.
Yes. Virtual consultations are available for patients who prefer a remote visit or are traveling from outside the Los Angeles area. During a virtual consult, our team can review your symptoms, history, imaging, and goals, then recommend next steps and whether an in-person evaluation or surgical planning visit is appropriate.

We are always welcome to patients

  • (310) 388-1955
  • 8635 W 3rd St Suite 880 w, Los Angeles, CA 90048
  • Monday - Friday: 9 AM – 5 PM,
    Saturday & Sunday: Closed