Oklahoma Cancer and Blood Specialists

Oklahoma City · Tulsa · Enid · Weatherford

Delivering Precision Care for Cancer and Blood Disorders

Proudly serving Oklahoman communities with comprehensive oncology and hematology care. We tailor every treatment plan to the unique needs of each patient. From diagnosis through recovery, we deliver clarity, coordination, and confidence.

We schedule by phone — call the location nearest you to book.

Oncologists reviewing a patient chart

4

Oklahoma Locations

9

Dedicated Providers

20+

Years Serving Oklahoma

3

Board-Certified Physicians

What We Offer

Our Services

We provide comprehensive cancer and blood care through personalized treatment plans, advanced therapies, and coordinated support services. From diagnosis to recovery, our focus is on delivering effective care with clarity and compassion.

Medical Oncology

Our medical oncology services focus on diagnosing and treating cancer using advanced therapies, including chemotherapy, immunotherapy, and targeted treatments, tailored to each patient’s condition and care plan.

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Hematology

Our hematology services focus on diagnosing and managing a wide range of blood disorders, including anemia, clotting conditions, and blood cancers, with personalized care plans tailored to each patient’s needs.

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Infusion Therapy

Our infusion therapy services provide safe, on-site administration of treatments such as chemotherapy, immunotherapy, and supportive infusions in a controlled and patient-focused environment.

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Diagnostic & Laboratory Services

Our diagnostic and laboratory services enable timely, accurate diagnosis through blood work, biopsies, and coordinated imaging and molecular testing.

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On-Site Chemotherapy

Chemotherapy is administered on site at all four of our Oklahoma locations by oncology-certified nurses under the direct supervision of your treating physician.

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Medically-Integrated Dispensing

Our Oklahoma City clinic offers Medically-Integrated Dispensing with a full-time pharmacist on site, operating under our physicians' medical license to serve patients already in our care.

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Find Us

Our Clinics

Our clinic locations ensure accessible, specialized care across Oklahoma. Choose a clinic below to get started.

Our People

Our Team of Experts

Our physicians and advanced practice providers bring extensive experience and a patient-centered approach to delivering high-quality oncology and hematology care.

Sanjaykumar Hapani, M.D.

Sanjaykumar Hapani, M.D.

Hematologist & Medical Oncologist

Oklahoma CityEnid
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Hassan Kaleem, M.D.

Hassan Kaleem, M.D.

Hematologist & Medical Oncologist

Tulsa
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Robert E. Reynolds, M.D.

Robert E. Reynolds, M.D.

Medical Oncologist & Hematologist

Oklahoma CityWeatherford
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Andrea L. Putthoff, DNP

Andrea L. Putthoff, DNP, APRN-CNP, FNP

Doctor of Nursing Practice / Family Nurse Practitioner

Oklahoma City
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Michelle Tull, APRN-CNS

Michelle Tull, APRN-CNS, OCN

Adult-Gerontology Clinical Nurse Specialist, Oncology

Oklahoma CityWeatherford
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Agnes Tonkumoh, MSN

Agnes Tonkumoh, MSN, APRN, FNP

Family Nurse Practitioner

Oklahoma City
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Meet the Full Team

Getting Started

How It Works

From your first call to your treatment plan, our team is with you at every step.

1

Registration

Our team gathers your medical history, insurance details, and referring physician records to prepare for your first visit.

2

Diagnostic Evaluation

We coordinate lab work, imaging, and any additional testing needed to confirm your diagnosis and fully understand your condition.

3

Personalized Treatment

Your physician builds a treatment plan tailored to your diagnosis and goals, with your care team supporting you at every step.

Care team consulting with a patient

Why Choose Us

Compassionate expertise, close to home

From diagnosis through survivorship, our team combines academic-level expertise with the accessibility and warmth of a community practice.

Board-certified specialists

Physicians and advanced practice providers trained at leading academic institutions.

Four Oklahoma locations

Convenient access to care in Oklahoma City, Tulsa, Enid, and Weatherford.

On-site infusion & diagnostics

Treatment and testing administered close to home in a comfortable setting.

Whole-person supportive care

Symptom management, education, and survivorship support at every stage.

Patient and provider

Ready to take the next step?

Our team is ready to help you get answers and build a treatment plan tailored to you. Give the location nearest you a call to get started.

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