Dr. Siamak Milanchi, MD

Colorectal SurgeryMaleAge 52

Colorectal Surgery

Dr. Siamak Milanchi, MD is a Colorectal Surgery Specialist in Irvine, CA and has over 26 years of experience in the medical field. He graduated from Tehran University Of Medical Sciences, Faculty Of Medicine in 1996. He is affiliated with medical facilities Hoag Hospital Newport Beach and Orange Coast Medical Center. His office accepts new patients.

Dr. Siamak Milanchi, MD

Irvine Colorectal Surgery

16300 Sand Canyon Ave Ste 604 Irvine, CA 92618
Accepting new patients

Make an Appointment

(949) 429-0268

Accepting new patients

At a Glance

  • Explains Conditions Well
    Patients said this doctor explains conditions well. See reviews
  • Practices at Top Hospital
    America's 250 Best Hospitals Award™ See hospitals
  • Recent Reviews
    Reviews made in the last 30 days. See reviews
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Experience and Background Checks

Experience
Background

Background Check

No malpractice claims found for California
No disciplinary actions found for the years we collect data
No board actions found for the years we collect data
Learn more about background checks

Experience Check

Check Dr. Milanchi's experience treating your condition or procedure

Dr. Milanchi's Top Procedures and Conditions

Treatment Frequency
Anal Fissure
very high
very high

Treatment Frequency

Dr. Milanchi treats Anal Fissure more than 100% of his peers

Dr. Milanchi treats this condition more than 100% of his peers

Hemorrhoids
high
high

Treatment Frequency

Dr. Milanchi treats Hemorrhoids more than 90% of his peers

Dr. Milanchi treats this condition more than 90% of his peers

Anal Fistula
normal
normal

Treatment Frequency

Dr. Milanchi treats Anal Fistula more than 89% of his peers

Dr. Milanchi treats this condition more than 89% of his peers

Dr. Milanchi's conditions and procedures:

  • Abdominal Pain
  • Anal Cancer
  • Anal Fissure
  • Anal Fistula
  • Anal or Rectal Pain
  • Anorectal Abscess
  • Barrett's Esophagus
  • Benign Neoplasm of the Digestive System
  • Cholecystitis and Gallstones
  • Colon Cancer
  • Colon Polyp
  • Colonic Diverticulosis
  • Constipation
  • Diaphragmatic and-or Hiatal Hernia
  • Gallstones
  • Hemorrhoid Banding
  • Hemorrhoids
  • Hiatal Hernia
  • Ileus
  • Incisional Hernia
  • Inflammatory Bowel Disease
  • Inguinal Hernia
  • Lipomas
  • Non-Surgical Treatment of Hemorrhoids
  • Partial Lung Collapse
  • Peripheral Vascular Disease (PAD, PVD)
  • Port Placements or Replacements
  • Rectal Bleeding
  • Rectal Cancer
  • Rectal Prolapse
  • Ruptured Aortic Aneurysm
  • Ulcerative Colitis
  • Umbilical Hernia
  • Ventral Hernia

Insurance Check

Search for your insurance provider

Dr. Milanchi accepts

Accepted insurance can change. Please double-check when making an appointment.

(949) 429-0268

Dr. Milanchi accepts the following insurance:

Aetna
Basic HMO
Anthem
Advantage-CA HMO
Advantage-CA PPO
Blue Cross (CACare) - Individual-CA HMO
Blue Cross (CACare) - Large Group-CA HMO
Blue Cross (CACare) - Small Group-CA HMO
Blue Cross (Prudent Buyer) - Individual-CA PPO
Blue Cross (Prudent Buyer) - Large Group-CA PPO
Blue Cross (Prudent Buyer) - Small Group-CA PPO
Blue Cross (Prudent Buyer) - Student Health-CA PPO
Blue Cross-CA HMO-POS
Bronze EPO (Prudent Buyer / Small Grp)-CA PPO
Bronze EPO (Prudent Buyer EPO/ Small Grp)-CA
Bronze w/ H.S.A (Prudent Buyer PPO/Small Grp)-CA PPO
Dignity Health Custom Advantage-CA HMO
Dignity Health EPO / PPO-CA
Dignity Health Ventura EPO/PPO-CA
EPO-CA
Gold (CaliforniaCare HMO/ Small Grp) HMO
Gold (Prudent Buyer PPO/ Small Grp)-CA PPO
Gold Advantage-CA PPO
Gold EPO (Prudent Buyer / Small Grp)-CA PPO
Gold EPO (Prudent Buyer EPO/ Small Grp)-CA
Gold Select (Select / Small Grp)-CA HMO
Lumenos Plans-CA PPO
Major Risk Medical Insurance Program (MRMIP) - Prudent Buyer-CA PPO
MemorialCare Custom-CA PPO
National (BlueCard Basic) PPO
National (BlueCard) PPO
PERS Traditional-CA HMO
Platinum (CaliforniaCare HMO/ Small Grp) HMO
Platinum (Prudent Buyer PPO/ Small Grp)-CA PPO
Platinum Select (Select / Small Grp)-CA HMO
Priority Select-CA HMO
Select Plus-CA HMO
Select-CA HMO
Silver (CaliforniaCare HMO/ Small Grp) HMO
Silver Advantage-CA PPO
Silver EPO (Prudent Buyer EPO/ Small Grp)-CA
Silver EPO w/ H.S.A (Prudent Buyer/Small Grp)-CA PPO
Silver Select (Select / Small Grp)-CA HMO
Silver w/ H.S.A (Prudent Buyer PPO/Small Grp)-CA PPO
Tenet Network-CA PPO
Traditional
Traditional PPO
UC Care-CA PPO
UC CORE-CA PPO
UC Health Savings Plan-CA
UC High Option Supplement to Medicare-CA
UC Medicare with Prescription Drugs-CA PPO
UC Medicare without Prescription Drugs-CA PPO
UC Resident and Fellows-CA PPO
UCSHIP-CA PPO
USC Plan (Two Tiered Network)-CA HMO
Anthem Blue Cross
Blue Cross Blue Shield of California
Advantage Preferred DirectAccess Plus PPO
Priority Select HMO
Select Plus HMO
Blue Shield of California
Access Plus Savenet
CalOptima
CareFirst Blue Cross Blue Shield
HealthyBlue 2.0
HealthyBlue Advantage
Cigna
LocalPlus
Open Access Plus
Health Net
HealthCare Partners
Humana
Monarch Healthcare
MultiPlan
UnitedHealthCare
United Healthcare

Dr. Milanchi's Reviews

Likelihood to recommend Dr. Milanchi

4.7

Based on 138 ratings

5 Star
91%
91%
4 Star
2%
2%
3 Star
1%
1%
2 Star
0%
0%
1 Star
6%
6%
What went well
No reviews yet
What could be improved
No reviews yet

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RecentHighestLowestMost Helpful
Reply
So lucky to have found Dr. Milanchi
Dr. Milanchi and his office staff are absolutely wonderful! Very responsive to calls, emails and questions! He is thorough throughout consult, and surgery, never felt rushed and always.felt in the loop. Would DEFINITELY recommend him for anyone needing colorectal surgery. He is extremely skilled with excellent bedside manner. Thank You for taking such great care of my father in law!!
What went well
  • Appointment scheduling
  • Office environment
  • Staff friendliness
  • Wait times
  • Appointment wasn't rushed
  • Listened & answered questions
  • Explained conditions well
  • Trusted the provider's decisions
What could be improved
No results
Helpful
christi han – Nov 12, 2022
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Reply
Sigmoid Colon Resection
I had emergency colon surgery in February 2022. Mr. Milanchi was my assigned surgeron after I was discharged (8 nights at Hoag Newport). Dr. Milanchi was excellent in all respects during the 8 months the recover took until the 2nd corrective surgery. He was very clear as to what was gong on, answered all questions, and performed the 2nd surgery as well as I could have hoped. I would highly recommend him. His office staff is also great, on time, and they answer the phone when you call!
What went well
  • Appointment scheduling
  • Office environment
  • Staff friendliness
  • Wait times
  • Appointment wasn't rushed
  • Listened & answered questions
  • Explained conditions well
  • Trusted the provider's decisions
What could be improved
No results
Helpful
Michael – Oct 19, 2022
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Reply
Very happy with this doctor.
Dr. Milanchi took very good care of my husband’s surgery needs and was very responsive to our questions.
What went well
  • Appointment scheduling
  • Office environment
  • Staff friendliness
  • Wait times
  • Appointment wasn't rushed
  • Listened & answered questions
  • Explained conditions well
  • Trusted the provider's decisions
What could be improved
No results
Helpful
Sep 29, 2022
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Reply
Can there be a beeter surgeon than Dr. Milanchi?!
Absolutely the best! Such a great surgeon, so caring, knowledgeable, professional, attentive, and responsive. I knew he was good when the oncologist got excited to hear the surgeon is Dr. Milanchi! Then I knew he was excellent when all the nurses in the hospital said that they loved working with him because he returns their calls/messages within 5 minutes when other doctors are off and not to found after 7pm! I need surgery, Dr. Milanch is your BEST choice...hands down. Thank you, Dr. Milanchi, for all your hard work to make your patients feel better, both physically and emotionally.
What went well
  • Appointment scheduling
  • Office environment
  • Staff friendliness
  • Wait times
  • Appointment wasn't rushed
  • Listened & answered questions
  • Explained conditions well
  • Trusted the provider's decisions
What could be improved
No results
Helpful
Rasheed Irani – Sep 16, 2022
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Reply
Flexible sigmoidoscopy
Muy bien todo bien explicado una atención rápida y segura muy profesional, y confiable, y cuenta con interprete de español, en sus procedimientos todos cuidadosamente
What went well
  • Appointment scheduling
  • Office environment
  • Staff friendliness
  • Wait times
  • Appointment wasn't rushed
  • Listened & answered questions
  • Explained conditions well
  • Trusted the provider's decisions
What could be improved
No results
Helpful
Maria Lopez – Aug 10, 2022
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Reply
He is well experienced, well educated and a dedicated doctor. He did a great job on my colostomy take down. 100% recommend.
What went well
  • Appointment scheduling
  • Office environment
  • Staff friendliness
  • Appointment wasn't rushed
  • Listened & answered questions
  • Explained conditions well
  • Trusted the provider's decisions
What could be improved
No results
Helpful
Biroun – Jun 01, 2022
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Reply
I was diagnosed as a colon cancer and Dr. Milanchi helped me getting the right surgery. His care for patients are beyond the standard. The best surgeon you can ever meet! My family and relatives are not only impressed but also grateful for taking of me so professionally and gently.
What went well
  • Appointment scheduling
  • Office environment
  • Staff friendliness
  • Wait times
  • Appointment wasn't rushed
  • Listened & answered questions
  • Explained conditions well
  • Trusted the provider's decisions
What could be improved
No results
Helpful
Apr 27, 2022
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Reply
Great Doctor/Surgeon!
It has been a month since my surgery (colon resection/sigmoidectomy for diverticulitis), and I am doing great! Dr. Milanchi has been amazing with the entire process, explaining everything in great detail to me (risk vs benefits), and taking care and time to answer all my questions (had a lot lol!). I am so grateful that I found such a wonderful doctor and experienced, detail oriented surgeon. Even with a bit of a delay for the surgery due to Covid, the wait was well worth the outcome! In addition, his office team (Baily, Betty, and the rest) are the best I have come across; very caring, pleasant, and accommodating! I would definitely recommend any member of my Family in need of issue regarding colorectal treatment to the care of Dr. Milanchi and his wonderful team!
What went well
  • Appointment scheduling
  • Office environment
  • Staff friendliness
  • Wait times
  • Appointment wasn't rushed
  • Listened & answered questions
  • Explained conditions well
  • Trusted the provider's decisions
What could be improved
No results
Helpful
Cory D – Mar 24, 2022
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Reply
Everyone there was great, a really good Doctor. I would recommend Dr. Milanchi, to anyone.
What went well
  • Appointment scheduling
  • Office environment
  • Staff friendliness
  • Wait times
  • Appointment wasn't rushed
  • Listened & answered questions
  • Explained conditions well
  • Trusted the provider's decisions
What could be improved
No results
Helpful
Feb 27, 2022
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Reply
Exceptional Care Team
Dr. Milanchi helped me through two incredible difficult surgeries. I called in the early hours after staying up all night in incredible pain. His team helped me get in to see him as soon as possible. He rushed me to the nearby hospital for emergency surgery and provided me with excellent care. He was so helpful patient with all of my questions and always respectful and considerate of my needs and concerns. He took the time to explain everything in the healing process. He even replied to emails and voicemails over the weekends. It was because of him that I was able to fully heal with little complications. A special note on his amazing team. The people working in his office were so kind and helpful. They would always greet me with a Smile and understanding. Ever accommodating, they made our weekly visits a pleasant experience. They made my LOA work simple and hassle free. I am forever grateful for their hard work even in the crazy COVID times. Thank you Dr. Milanchi and Team.
What went well
  • Appointment scheduling
  • Office environment
  • Staff friendliness
  • Wait times
  • Appointment wasn't rushed
  • Listened & answered questions
  • Explained conditions well
  • Trusted the provider's decisions
What could be improved
No results
Helpful
Melissa M – Feb 01, 2022
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Reply
Dr. Milanchi is fantastic!!!!!! He prescribed Metamucil to add fiber to bulk up the waste in my bowels and it worked! No more problems! He said to avoid surgery as it wouldn’t be the answer for my condition. I have had the best results from him and my three other Iranian Doctors! They all know what they are talking about! I highly recommend Dr. Milanchi !!!!!
What went well
  • Appointment scheduling
  • Office environment
  • Staff friendliness
  • Wait times
  • Appointment wasn't rushed
  • Listened & answered questions
  • Explained conditions well
  • Trusted the provider's decisions
What could be improved
No results
Helpful
Lynnita Leonard – Jan 21, 2022
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Reply
Having colon cancer is not a happy time. Dr. Milanchi pulled no punches, he told me what to expect, what the procedure would be and repeatedly ask me if i had anymore questions. He wanted to make sure that i knew what the surgery was all about. I really appreciated his total transparency. Thank you Dr.Milanchi
Helpful
stephen olson – Dec 31, 2021
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Reply
Dr Milanchi was very proffesional, gentle and kind with me. He answered all my questions. I was scared of surgery, but I am now so happy he was my surgeon. I feel great and I am thankful for his dedication and expertise in what he does.
Helpful
Ana Moreno – Dec 06, 2021
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Reply
Dr. Milanchi is the best surgeon, very professional and caring. And his staff are very helpful and friendly too. The most positive experience, highly recommend him.
What went well
  • Appointment scheduling
  • Office environment
  • Staff friendliness
  • Wait times
  • Appointment wasn't rushed
  • Listened & answered questions
  • Explained conditions well
  • Trusted the provider's decisions
What could be improved
No results
Helpful
Linda L. – Oct 19, 2021
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Reply
Dr. Milanchi gave me my life back and I cannot thank him enough. His office staff is very professional and personable.
What went well
  • Appointment scheduling
  • Office environment
  • Staff friendliness
  • Wait times
  • Appointment wasn't rushed
  • Listened & answered questions
  • Explained conditions well
  • Trusted the provider's decisions
What could be improved
No results
Helpful
Carrie Ojeda – Aug 26, 2021
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Reply
Dr. Milanchi and his staff were amazing and definitely a big help in dealing with my fistula issues. The doctor took his time each and every visit to discuss my treatment plus answered all of my questions. The surgery at Hoag Irvine was also a great experience overall, as everyone from the nurses to the anesthesiologist and Dr. Milanchi himself were super kind and helpful. All of Dr. Milanchi's staff were so kind, but Bailey especially was a great help and always super friendly, no matter how many times I called with questions for the doctor. I am so thankful to him and his staff, and would definitely recommend him as a CRS to anyone dealing with fistula issues.
What went well
  • Appointment scheduling
  • Office environment
  • Staff friendliness
  • Wait times
  • Appointment wasn't rushed
  • Listened & answered questions
  • Explained conditions well
  • Trusted the provider's decisions
What could be improved
No results
Helpful
Aug 13, 2021
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Reply
Dr Milanchi performed a Robotic Lower Anterior Resection on me on 06-04-2021. I can not thank him enough for the whole process from beginning to end. Dr Milanchi prepared me for everything from our first office visit to the pre surgery visit one week before surgery. After our first visit Dr Milanchi scheduled a sigmoidoscopy to confirm scope of my procedure to follow 6 weeks later. Thanks to he and his staff I was 100 percent prepared. He also recommended Genetic Counseling which was very important for my wife to hear and be educated on my condition. During these 6 weeks leading up to my surgery we were able to rule out Lynch Syndrome and stick to the original scope. Today I left his office and my surgery was 100 percent successful. Thank you Dr. Milanchi for giving me a new lease on life!!! You and your staff are A++++ I can not recommend Dr Milanchi enough. What could of been an awful 6-8 weeks, Dr Milanchi prepared me physically and mentally.
What went well
  • Appointment scheduling
  • Office environment
  • Staff friendliness
  • Wait times
  • Appointment wasn't rushed
  • Listened & answered questions
  • Explained conditions well
  • Trusted the provider's decisions
What could be improved
No results
Helpful
Neil Moffatt – Jun 15, 2021
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Reply
Dr Milanchi was very consistent with his messaging and provided a clear plan of treatment which was followed. The office support team were professional and supportive. Sometimes a Dr of few words but during the 4 month treatment plan he was responsive to my questions and explained the benefits of allowing the area to heal slowly in order to avoid more surgery. Satisfied with the outcome and have had no issues since.
What went well
  • Appointment scheduling
  • Staff friendliness
  • Listened & answered questions
  • Trusted the provider's decisions
What could be improved
  • Office environment
Helpful
Jun 11, 2021
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Reply
Dr. Milanchi is an excellent surgeon. We would definitely recommend Dr. Milanchi and his staff to our family and friends.
What went well
  • Appointment scheduling
  • Office environment
  • Staff friendliness
  • Wait times
  • Appointment wasn't rushed
  • Listened & answered questions
  • Explained conditions well
  • Trusted the provider's decisions
What could be improved
No results
Helpful
May 06, 2021
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Reply
Dr Milanchi is a very kind gentle Dr M explains everything about your procedure and is on it thorough and transparent staff is always kind and helpful friendly thank you for all you do I appreciate your help
What went well
  • Appointment scheduling
  • Office environment
  • Staff friendliness
  • Wait times
  • Appointment wasn't rushed
  • Listened & answered questions
  • Explained conditions well
  • Trusted the provider's decisions
What could be improved
No results
Helpful
Rachel Romero – Apr 30, 2021
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About Me

Biography

Dr. Siamak Milanchi, MD is a Colorectal Surgery Specialist in Irvine, CA and has over 26 years of experience in the medical field. He graduated from Tehran...Read more

Specialties

  • Colorectal Surgery

Board Certifications

  • Colon & Rectal Surgery
  • General Surgery

Education

2009
University Of Southern California
Fellowship Hospital
2008
Cedars-Sinai Medical Center
Residency Hospital
2004
La County King-Drew Medical Center
Internship Hospital
2002
Bonn University Hospital
1996
Tehran University Of Medical Sciences, Faculty Of Medicine
Medical School
,

Languages

  • English
  • Persian

Awards

Frequently Asked Questions

Is Dr. Siamak Milanchi, MD accepting new patients?

Dr. Siamak Milanchi, MD generally accepts new patients on Healthgrades. You can see Dr. Milanchi's profile to make an appointment.

Does Dr. Siamak Milanchi, MD accept my insurance?

Use the Healthgrades insurance check to verify if Dr. Milanchi accepts your insurance.

What are Dr. Siamak Milanchi, MD's top areas of care?

Dr. Milanchi frequently treats Anal Fissure, Hemorrhoids, and Anal Fistula. See all procedures and conditions Dr. Milanchi treats.

Where is Dr. Siamak Milanchi, MD's office located?

Dr. Milanchi's office is located at 16300 Sand Canyon Ave Ste 604, Irvine, CA 92618. Find other locations and directions on Healthgrades.

What languages does Dr. Siamak Milanchi, MD speak?

Dr. Milanchi speaks Farsi and English. View profile to see all.

Does Dr. Siamak Milanchi, MD offer telehealth services?

Dr. Milanchi has not yet indicated whether they offer telehealth services. Please contact the office to check for availability/eligibility.

How can I make an appointment with Dr. Siamak Milanchi, MD?

Find contact information here to make an appointment.

Locations

Irvine Colorectal Surgery

Irvine Colorectal Surgery16300 Sand Canyon Ave Ste 604 Irvine, CA 92618
1
  • Call
  • Fax
  • Hours
    • Mon: 9:00am - 5:00pm
    • Mon: 9:00am - 5:00pm
    • Tue: 9:00am - 5:00pm
    • Tue: 9:00am - 5:00pm
    • Wed: 9:00am - 5:00pm
    • Wed: 9:00am - 5:00pm
    • Thu: 9:00am - 5:00pm
    • Thu: 9:00am - 5:00pm
    • Fri: 9:00am - 5:00pm
    • Fri: 9:00am - 5:00pm
    • Sat: closed
    • Sat: closed
    • Sun: closed
    • Sun: closed
  • Directions

Affiliated Hospitals

Dr. Milanchi is affiliated with the following hospitals. Select a hospital below to learn more.

Learn more about how Healthgrades measuresHospital Quality.

Hoag Hospital Newport Beach

Newport Beach, CA

85% Patients that would definitely recommend, 15% higher than the national average

15 Awards Received

Award Highlight: Outstanding Patient Experience Award™ (2022)

Orange Coast Medical Center

Fountain Valley, CA

75% Patients that would definitely recommend, 5% higher than the national average

1 Award Received