Expert Surgical Care.
Personalized for You.

A team of experienced, board-certified surgeons treating a full range of conditions with compassion and expertise.

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Trusted by Thousands.
Backed by Experience.

Surgery Group LA is a team of highly specialized surgeons, based at Cedars-Sinai, who pioneer and adopt advanced surgical techniques and technologies – including robotic surgery, which is clearly shown to provide better surgical outcomes, far fewer complications and faster recovery times.

20
+
Years in Practice
15
K+
Successful Procedures
8
Expert Surgeons
7
Specialized Fields

Specialized Surgical Services

We provide a wide range of surgical services using the latest techniques and technologies to ensure the best possible outcomes for our patients.

General Surgery

Comprehensive surgical care for abdominal organs, including the stomach, intestines, and gallbladder.

Hidradenitis Suppurativa
Hernia Repair
Gallbladder Removal
Appendicitis
Biliary
View All General Surgery
general surgery center Los Angeles

Colorectal Surgery

Specialized care for conditions affecting the colon, rectum, and anus.

Hemorrhoid Treatment & Removal
Colonoscopy
Pilonidal Cyst Specialists
Colorectal Cancer
View All Colorectal Surgery
Colorectal surgery at Surgery Group LA

Thyroid Surgery

Comprehensive surgical care for abdominal organs, including the stomach, intestines, and gallbladder.

Multiple Endocrine Neoplasia
Parathyroid
Thyroid
Thyroid Nodules
Thyroidectomy
View All Thyroid Surgery
thyroid surgery specialist Los Angeles

Foot & Ankle Surgery

Comprehensive surgical care for abdominal organs, including the stomach, intestines, and gallbladder.

Bunion Surgery
Foot & Ankle Surgery
Neuroma Treatment
View All Foot & Ankle Surgery
Foot and ankle surgery at Surgery Group LA

Stomach & Gastric Surgical Oncology

Specialized surgical treatment for complex cancers such as Breast, pancreatic, liver, and gastrointestinal tumors. Our team delivers precise and aggressive intervention with coordinated care.

Gastric Cancer
Gastrointestinal Stromal Tumor (GIST)
Small Bowel Cancer
Pancreatic Cancer
Abdominal or Retroperitoneal Sarcoma
View All Surgical Oncology
Surgical oncology at Surgery Group LA

Our Specialty Centers

The Pilonidal Institute logo
The Hidradenitis Institute logo
The Thyroid Institute logo
The Feet Institute logo
GIST specialist Los Angeles surgery
The Hernia Institute LA logo
The Thyroid Institute logo
The Hidradenitis Institute logo
The Pilonidal Institute logo
The Hidradenitis Institute logo
The Thyroid Institute logo
The Feet Institute logo
GIST specialist Los Angeles surgery
The Hernia Institute LA logo

Experience matters. Our surgeons have achieved the highest standard of recognition for their expertise and skill.

36,782

+

Successful Surgeries

126

Years of Combined Experience

More importantly, our team of world-renowned surgeons have saved countless lives, and have enabled countless more to live healthy, happy lives.

Need a Second Opinion?

We understand that choosing surgery is a big decision. Let our experts provide clarity with a professional second opinion. Our experienced surgeons will review your case thoroughly and provide an objective assessment.
Whether you're looking for confirmation of a diagnosis or exploring alternative treatment options, our second opinion service gives you the confidence to make informed decisions about your health.
Request Second Opinion

What Our Patients Say

Real experiences from patients who've trusted us with their care.

I was very pleased with the office staff, they were always very pleasant and helpful. I was very impressed with Dr. Ellenhorn as well. He was very friendly and addressed all my concerns regarding my surgery and aftercare and follow up.

Terry J.
Colorectal Surgery

Surgery Group’s expertise and compassion made a difficult situation so much easier. The minimally invasive approach meant I recovered much faster than expected."

James R.
Colorectal Surgery
I was very pleased with the office staff, they were always very pleasant and helpful. I was very impressed with Dr. Ellenhorn as well. He was very friendly and addressed all my concerns regarding my surgery and aftercare and follow up.
Terry J.
Colorectal Surgery
Being diagnosed with cancer was really scary. Having Dr. Arena as my surgeon was amazing. Aside from being an excellent surgeon she is compassionate, caring, and takes time to listen to all of my concerns, every visit. I feel well taken care of, and tell everyone about her. The office staff is efficient, and friendly. If you are in need of a great breast surgeon, I highly recommend you see Dr. Arena at Surgery Group of LA. Absolutely the best!
Debra D.
Colorectal Surgery
My primary care physician recommended Dr. Barnajian and his office staff were absolutely superb. The scheduling, the way they greet you when you walk in, it was as good a personalized service as I’ve had visiting a doctor... ever. Natasha in particular at the front desk was friendly, helpful... awesome.
Larry S.
Colorectal Surgery
Doctor Nasseri is wonderful, always answers our questions and always makes us leave the feeling good about everything!
Vianca C.
Colorectal Surgery
I was very pleased with the office staff, they were always very pleasant and helpful. I was very impressed with Dr. Ellenhorn as well. He was very friendly and addressed all my concerns regarding my surgery and aftercare and follow up.
Terry J.
Colorectal Surgery
Being diagnosed with cancer was really scary. Having Dr. Arena as my surgeon was amazing. Aside from being an excellent surgeon she is compassionate, caring, and takes time to listen to all of my concerns, every visit. I feel well taken care of, and tell everyone about her. The office staff is efficient, and friendly. If you are in need of a great breast surgeon, I highly recommend you see Dr. Arena at Surgery Group of LA. Absolutely the best!
Debra D.
Colorectal Surgery
My primary care physician recommended Dr. Barnajian and his office staff were absolutely superb. The scheduling, the way they greet you when you walk in, it was as good a personalized service as I’ve had visiting a doctor... ever. Natasha in particular at the front desk was friendly, helpful... awesome.
Larry S.
Colorectal Surgery
Doctor Nasseri is wonderful, always answers our questions and always makes us leave the feeling good about everything!
Vianca C.
Colorectal Surgery

Meet Our Surgical Experts

Our team of board-certified surgeons brings decades of experience and specialized expertise to provide you with exceptional surgical care.
Dr. Moshe Barnajian, colorectal surgeon in Los Angeles

Moshe Barnajian MD, FACS

Colorectal Surgeon, Robotic Surgery Specialist
Dr. Yosef Nasseri, colorectal surgeon in Los Angeles

Yosef Nasseri MD, FACS, FASCRS

Colorectal Surgeon, Robotic Surgery Specialist
Dr Jason Cohen board certified surgeon Los Angeles

Jason Cohen MD, FACS

Thyroid Surgeon, Surgical Oncologist
Dr. Elizabeth Arena, breast cancer surgeon in Los Angeles

Elizabeth Arena, MD

Breast Surgery Specialist, Surgical Oncologist
Dr. Joshua Ellenhorn, surgical oncologist in Los Angeles

Joshua Ellenhorn, MD, FACS​

General Surgeon, Surgical Oncologist
Dr. Pegah Panirian, foot and ankle surgeon in Los Angeles

Pegah Panirian, DPM

Foot and Ankle Surgeon
Dr. Raanan Meyer, gynecologic surgeon in Los Angeles

Raanan Meyer, MD

Gynaecologist, Endometriosis Specialist

Stay Informed with Expert Insights

Our surgeons regularly share valuable medical information, tips, and the latest advancements in surgical care.
August 14, 2026

Hernia Surgery Recovery: A Week-by-Week Timeline

Most patients go home the same day after minimally invasive hernia repair, return to desk work in about a week, and phase heavier activity back in over several weeks. Here is a realistic week-by-week recovery timeline and the warning signs that warrant a call.

Dr. Joshua Ellenhorn & Dr. Jason Cohen

Read More
August 14, 2026

Robotic vs. Laparoscopic Hernia Repair: How to Choose

Both robotic and laparoscopic hernia repair are minimally invasive, and in experienced hands outcomes are similar. Here is how the two approaches differ and how our Los Angeles hernia surgeons decide which one is right for each patient.

Dr. Joshua Ellenhorn & Dr. Jason Cohen

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Doctor examining a lump on a patient's upper arm during a consultation
August 13, 2026

When Should You Get a Lipoma Removed?

Most lipomas are harmless and can be left alone — but not all. This surgeon's guide explains which fatty lumps are safe to monitor, the symptoms and red flags (including how lipomas differ from liposarcoma) that warrant evaluation, how diagnosis works, and what removal involves.

Dr. Joshua Ellenhorn & Dr. Jason Cohen

Read More
View All Articles

Advanced Surgical Care in Los Angeles

Surgery Group LA is a Los Angeles surgical practice based at the Cedars-Sinai Medical Office Towers — 8635 W 3rd St, Suite 880W, Los Angeles, CA 90048. Our board-certified, fellowship-trained surgeons provide general surgery, hernia repair, colorectal surgery, thyroid and parathyroid surgery, surgical oncology, and robotic, minimally invasive procedures for patients from Beverly Hills, West Hollywood, Santa Monica, and communities across Los Angeles. Call (310) 861-7493 to schedule a consultation.

Locations & Areas We ServeGeneral SurgeryHernia SurgeryColorectal SurgeryThyroid SurgerySurgical OncologyRobotic SurgeryContact Us

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Each Surgery Group LA surgeon is specialized and highly skilled, so you can rest assured you are being taken care of by the best.
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