Oncology & Hematology

Comprehensive and Complete Cancer Care

Oncology & Hematology Specialists

Passionate Treatment for Cancer Patients

Our oncologists are truly passionate about treating hematological and cancer disorders. They develop strong relationships with patients as they become a part of their life journey. Unfortunately, many of the diagnoses our oncologists encounter weigh heavily on families. The journey can become difficult, but our doctors are with their patients every step of the way. Not everything is preventable, but with the right touch, healing can be achieved in any manner.

Oncology is the branch of medicine that deals with the diagnosis, treatment, and prevention of cancer. Though all cancer results from the same general biochemical events, slight differences in the types of cells that eventually become cancerous greatly affect how the disease is treated.

Ways to Schedule an Appointment

Conditions and Treatments

State-of-the-Art Cancer Care

Treating cancer is one of the most complex endeavors in medical care. Modern cancer treatment is made possible due to an ability to precisely identify specific cancers that allow oncologists to tailor treatment to the specific needs of the patient and the disease. Many current approaches to cancer treatment work only when the specific cells that cause cancer, along with their unique characteristics, are known.

Perhaps the most important advancement in the treatment of cancer in recent years has been the development of immunologic therapy or immunotherapy, which recruits the body’s own immune system to help fight cancer. Immunologic therapy is custom-tailored not just to the individual cancer being treated, but to the individual patient as well. Immunotherapy uses monoclonal antibodies, oncolytic viruses, interferons, interleukins, T-cell therapy, and cancer vaccines to boost the body’s natural defenses against cancer. By specifically targeting individual cancer subtypes, immunotherapy is vastly improving the success rates of cancer therapy.

The most important principle in all cancer therapy, however, is early diagnosis. The sooner a cancer is caught, the more likely it is that it can be cured. Oncologists continue to push the limits of blood testing, imaging (x-ray, CT, MRI, etc.), and other methods of early diagnosis in order to make cancer care more effective and improve long-term survival rates. Thanks to the efforts of oncologists, once-incurable cancers like leukemia, testicular cancer, lymphoma, and sarcoma are becoming increasingly curable, sometimes even when metastatic.

Oncology & Hematology Services in These Locations


600 N. Kobayashi Rd. Ste. 310
Webster, TX 77598


Oncology & Hematology Specialists

Jocelyn Walker, NP

Jocelyn Walker, NP


Webster Clinic

John Knecht III, MD

John G. Knecht III, MD


Webster Clinic

Schedule An Appointment Today!

You can book appointments through our secure patient portal, or call our customer service center 281-724-8335.

When you choose to be cared for by CLS Health providers, you can have peace of mind knowing that all aspects of your care are coordinated. Using secure electronic medical records, your CLS Health primary care physicians and oncology and hematology specialists will have visibility into any test results or treatment plans. This seamless integration allows us to provide comprehensive, personalized care right when you need it.

Find Out If CLS Health Is In-Network With Your Insurance

CLS Health Insurance Information

At CLS Health, we serve patients with many types of insurance coverage offered by many different companies and entities. CLS and its providers accept Medicare, Medicaid, and most major health plans outlined on our insurance information page. Remember to always check with your health insurance carrier regarding specific covered services. The list grows and changes frequently. If you don’t see your insurance listed or if you have any questions, please contact us.

Oncology FAQ

What is oncology?

Oncology is a medical field that deals with the diagnosis and treatment of cancer. A physician who specializes in oncology is called an oncologist. Oncologists may use blood tests, biopsies, endoscopy, CT scans, MRI scans, and X-rays among other methods to help diagnose the cancer or tumor. Therapies may include radiotherapy, chemotherapy, or other means to manage cancer to improve and prolong the quality of life.

What is chemotherapy and how is it given?

Chemotherapy is one of the treatment modalities used to treat cancer. It kills the rapidly dividing cancer cells in various ways depending on the drug used. The common mechanisms by which these drugs kill cancer cells include causing damage to the DNA, preventing the division of cells, or disturbing cell metabolism. Chemotherapy is generally given as an intravenous injection, but may also be given in the form of a pill or by intrathecal/intraventricular injection directly into the spinal fluid. The treatment is scheduled in cycles, which means that there will be a period of rest followed by each treatment session. A chemotherapy course consists of several cycles, usually four to six cycles. Each cycle lasts for about one, two, or four weeks. There are various types of chemotherapeutic drugs available. Your oncologist will determine the one or a combination of drugs that suits you well.

How often will chemotherapy be scheduled?

Typically, chemotherapy sessions will be scheduled on a daily, weekly, or monthly basis. The actual time taken for administering the chemotherapy drugs may vary from a few minutes to several hours. The frequency of your chemotherapy session depends on your type of cancer, and the drugs that you are given. Your oncologist will determine the most effective treatment schedule that suits your condition.

Am I at a risk for anemia?

A large number of people are at an increased risk for anemia because of deficient diet, chronic disease, intestinal disorder, infection, and other conditions. The risk of anemia becomes greater as one grows older. Pregnant women are at a higher risk for this disease. People who involve themselves in vigorous sports activities such as jogging or basketball are at risk for anemia due to red blood cell destruction in their bloodstream. You may be at an increased risk for anemia if you have any of the listed chronic conditions:

  • Inflammatory Bowel Disease (Crohn’s Disease or Ulcerative Colitis)
  • Cancer
  • Thyroid Disease
  • Kidney and Liver Disease
  • Rheumatoid Arthritis or Other Autoimmune Diseases

The signs and symptoms of anemia are most commonly neglected, and in most cases, people are not aware of their anemia until it is discovered on a blood test.