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Dr. George B Semeniuk III Is this you?

About Dr. George B Semeniuk III

Dr. George B Semeniuk III, MD is a Doctor primarily located in Newport Beach, CA. His specialties include Medical Oncology, Hematology, Hematology & Oncology and Internal Medicine. Dr. Semeniuk has received 2 awards. He speaks English.

Rating Overview

18 Ratings with 6 Comments

The overall average patient rating of Dr. George B Semeniuk III is Excellent. Dr. George B Semeniuk III has been rated by 18 patients. From those 18 patients 6 of those left a comment along with their rating. The overall rating for Dr. George B Semeniuk III is 4.6 of 5.0 stars.

Mapbox Map of Dr. George B Semeniuk III

Primary Address

Orange Coast Oncology Hematology

520 Superior Ave Ste 300
Newport Beach, CA 92663
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Dr. George B Semeniuk III has the following 4 specialties

  • Medical Oncology

    Think of an oncologist as your main physician for cancer care. After being diagnosed, you’ll meet regularly with an oncologist to explore and manage your treatment options, as well as monitor your condition throughout the process. Medical oncologists are extremely knowledgeable in various types of cancer treatment and can recommend the right method for the type and stage of cancer you’re facing.
    They may also refer you to additional specialists throughout your care, but they will always be your home base for questions and support. It’s also worth mentioning that medical oncologists deal mostly with solid tumors while hematologists specialize in cancers that involve blood disorders, such as leukemia.

  • Hematology

    A hematology specialist is an expert in disorders of the blood, the blood forming organs and bone marrow. These doctors diagnose, treat and work to prevent diseases that affect the production of blood and its components, as well as the ability of the blood to perform its many functions, such as coagulation and carrying oxygen to the lungs and tissue.
    Hematologists diagnose and treat blood disorders, such as anemia, hemophilia, leukemia, sickle cell anemia, deep vein thrombosis and pulmonary embolism.
    Depending on the condition, hematology specialists may treat a patient with a blood transfusion, stem cell transplantation, bone marrow transplant, radiotherapy, anticoagulation therapy or medication.

  • Hematology & Oncology
  • Internal Medicine

    An internist is a physician who focuses on the diagnosis and treatment of conditions that affect the adult population—both acute and chronic.
    These doctors are often who adults see as their primary physicians because they treat a broad range of illnesses that do not require surgical or specialist interventions. They also work to help a patient maintain optimal health in order to prevent the onset of disease.
    In addition to treating the common cold and flu, internists also treat chronic diseases like diabetes and heart disease.

  • Expertise

    11 Expertise

  • Myeloma
  • Chronic Myeloid Leukemia
  • Chemotherapy
  • Deep Vein Thrombosis
  • Hepatitis C
  • Lymphoma
  • Cancer
  • Bone Marrow Transplant
  • Leukemia
  • Acute Myeloid Leukemia
  • Myelofibrosis

Board Certifications

See the board certifications this doctor has received. Board certifications provide confidence that this doctor meets the nationally recognized standards for education, knowledge and experience.


Showing 5 of 18

Five Stars

I had an acute form of Idiopathic Thrombocytopenic Purpura (ITP) and was being treated by another Hemotologist who was basically clueless in how to treat my case. I was a heartbeat away from having my spleen removed. Dr. George review my case and medication dosage and restore me to a normalized health....With no medications....He 's a great guy, easy to talk to and is on top of the latest technological developments.....Can't recommend him strongly enough....

Wait time
10 minutes
Easy Appointment
Friendly Staff
Accurate Diagnosis
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Spends Time with Me
Appropriate Follow-up
Full Review Rating Breakdown
A great healer , a great person

Cancer stinks. It just stinks. If you have to have it, you want a Dr like Dr Semeniuk to help you through it. I'm old, over the years I've had too many friends with Cancer, been with them to their doctors. I've never met a doctor who communicates as directly and empatheticaly as Dr Semeniuk. He's sharp. He and his clinic are among the top in treating cancer in the country. They have patients come to them from all over the world, and yet, I always feel like he's completely focused on ME when he talks to me.

Wait time
15 minutes
Easy Appointment
Friendly Staff
Accurate Diagnosis
Bedside Manner
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Full Review Rating Breakdown
Excellent and Phenomenal Doctor!!!!! A++++

Excellent Doctor! phenomenal Oncologist. Dr. Semeniuk saved my life. I had seen several different doctors before seeing Dr. Semeniuk which he was the only one to find my cancer. He was relentless in finding an answer for me. He spent so much time with my husband and I explaining the type of cancer and the treatment options available. I am 10 years out of my cancer diagnosis and I couldn't be happier and living a very active lifestyle my quality of life improved when Dr. Semeniuk came into my life. Not to mention the friendly staff and Dr. Semeniuk's kind and compassionate bedside manner. He makes you feel comfortable in even the most difficult time your life. His staff was great and very knowledgeable and the abundance of RN staff available at your fingertips. Hands down the best Doctor and oncologist. Kudos Dr. Semeniuk and thank you for giving me my life back.

Wait time
2 minutes
Easy Appointment
Friendly Staff
Accurate Diagnosis
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Spends Time with Me
Appropriate Follow-up
Full Review Rating Breakdown
Worst Oncologist Ever

Where do I start? I am a two time cancer survivor, and Dr. Semeniuk was my oncologist. I had a cancerous tumor in my throat that he ignored for TWO years. During that time, they had an ultrasound report from Hoag that he disregarded. I finally read the ultrasound report that said "suspicious for cancer, highly recommend follow-up." Dr. Semeniuk still said it was nothing. I had to take matters into my own hands and I went to UCLA, where it came out one week later, and surprise, surprise cancer! Then in a follow up scan, it was obvious to me that the radiologist had made a mistake. I requested a re-read, and Dr. Semeniuk refused. I finally had to pull the "I'm a lawyer, now re-read it" card, and yes, not only had the radiologist missed several masses in my lungs, he had read it backwards (i.e. left was right; right was left) which, if not corrected, would have made comparison with the next scan impossible.... Dr. Semeniuk never apologized, never mentioned it. The last straw was when (after being his patient for nine years), I went on cobra and I had a few days where it had not kicked in yet. Despite the fact that my cobra insurance would have been retroactive to the beginning of the month, Dr. Semeniuk refused to see me until it kicked in. This happened right in the middle of tests from Hoag. He also refused to give me copies of the tests until after I saw him (which had to be after my cobra forms were processes.) So I had to go to Hoag to get them. Its bad enough when all the doctor cares about is the money. Its horrifying when he continuously misdiagnoses you, refuses to treat you, and cares nothing about your health. Hello UCLA!

Wait time
60.0 minutes
Easy Appointment
Friendly Staff
Accurate Diagnosis
Bedside Manner
Spends Time with Me
Appropriate Follow-up
Full Review Rating Breakdown
Five Stars

I couldn't be more pleased with Dr. Semeniuk's care. He's gotten me through some very difficult health challenges over several years, and despite the seriousness of my rare illness, I've always felt secure and positive as his patient.

Wait time
10.0 minutes
Easy Appointment
Friendly Staff
Accurate Diagnosis
Bedside Manner
Spends Time with Me
Appropriate Follow-up
Full Review Rating Breakdown
  • Awards

    2 Awards

  • Compassionate Doctor Recognition

    Compassionate Doctor Recognition (2015, 2012, 2011, 2013, 2010, 2014)

    Compassionate Doctor certification is granted to physicians who treat their patients with the utmost kindness. The honor is granted based on a physician's overall and bedside manner scores.

  • Patients' Choice Award

    Patients' Choice Award (2008, 2013, 2012, 2009, 2015, 2016, 2010)

    Patients' Choice recognition reflects the difference a particular physician has made in the lives of his/her patients. The honor is bestowed to physicians who have received near perfect scores, as voted by patients.

  • Education

  • George Washington University School Of Medicine And Health Sciences
  • University Of Texas Health System


  • Accepted Insurance

    Dr. George B Semeniuk III accepts the following insurance providers.

  • Aetna
    • Aetna Choice POS II
    • Aetna HMO
    • Aetna Managed Choice POS Open Access
    • Aetna Savings Plus of CA
  • BCBS Blue Card
    • BCBS Blue Card PPO
  • Blue Shield California
    • BS CA Platinum 90 PPO
    • Blue Shield CA Bronze 60 PPO SHOP
    • Blue Shield CA Bronze Full PPO 4500
    • Blue Shield CA PPO
    • Blue Shield CA Silver 70 PPO
  • Cigna
    • CIGNA Open Access Plus
    • Cigna Southern CA Select
  • First Health
    • First Health PPO
  • Health Net
    • Health Net CA HMO Employer Group
    • Health Net CA Individual and Family PPO
    • Health Net CA PPO
    • Health Net EPO - PureCare One Small Business
    • Health Net PureCare HSP Individual and Family Plans
  • Multiplan
    • Multiplan PPO
  • UHC West
    • UHC SignatureValue Flex3
    • UHC West SignatureValue HMO
  • View by Location

Locations & Directions

Orange Coast Oncology Hematology, 520 Superior Ave Ste 300, Newport Beach, CA


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