Dr. Katherine R. Exten
- Gender: Female
- Experience: 10 years
- Graduated from: Ohio State University College Of Medicine
- Graduation year: 2011
- Sole propriator: No
- NPI: 1982996237
Dr. Katherine R. Exten M.D.
Hematologist
She is located at 335 Glessner Avenue in Mansfield, OH 44903. Can help patients with the following: Bone Cancer, Deep Vein Thrombosis (DVT), Melanoma, Migraine, Nasopharyngeal Cancer, Prostate Cancer. Her National Provider Identifier (NPI) number is 1982996237. Appointment can be made via the phone number (419) 756-2003. She also has a website where you can get more information. The website can be found at https://www.ohiohealth.com/find-a-doctor/profile/4158/Katherine-R-Exten-MD. She is affiliated with 2 practices and 3 hospitals.
Conditions treated
Dr. Katherine Rebecca Exten, being an hematologist, treats the following conditions. Please be advised that this list may not be complete. For the full list of conditions treated, consult directly with Dr. Katherine R. Exten.
- Abdominal Pain
- Acute Pain
- Anal Cancer
- Anemia
- Arthritis
- Asthma
- Atherosclerosis
- Basal Cell Carcinoma
- Beta Thalassemia
- Bile Duct Cancer
- Bladder Cancer
- Bladder Control
- Blood Clots
- Bone Cancer
- Brain Cancer
- Breast Cancer
- Cancer
- Carcinoid Tumor
- Carcinoma
- Cervical Cancer
- Chest Pain
- Cholecystitis
- Chronic Obstructive Pulmonary Disease (COPD)
- Colon Cancer
- Common Cold
- Constipation
- Cystitis
- Deep Vein Thrombosis (DVT)
- Diarrhea
- Edema
- Esophageal Cancer
- Fever
- Gallbladder Cancer
- Gastroesophageal Reflux Disease (GERD)
- General Care
- Glioma
- Head and Neck Cancer
- Headache
- Heart Disease
- Hemophilia
- Hiatal Hernia
- High Blood Pressure
- Hodgkin's Disease
- Hot Flashes
- Hyperlipidemia
- Hyponatremia
- Idiopathic Thrombocytopenic Purpura (ITP)
- Influenza
- Inguinal Hernia
- Kidney Cancer
- Larynx Cancer
- Leukemia
- Liver Cancer
- Lung Cancer
- Melanoma
- Mesothelioma
- Migraine
- Multiple Myeloma
- Nasopharyngeal Cancer
- Nausea and Vomiting
- Neoplasm
- Neuroblastoma
- Neutropenia
- Non-Hodgkin's Lymphoma (NHL)
- Obesity
- Oral Cancer
- Osteoporosis
- Ovarian Cancer
- Pancreatic Cancer
- Penis Cancer
- Peptic Ulcer
- Pernicious Anemia
- Pheochromocytoma (PCC)
- Polycythemia
- Prescription Refill
- Prostate Cancer
- Pulmonary Embolism (PE)
- Retinoblastoma
- Salivary Gland Cancer
- Sarcoma
- Sickle Cell Anemia
- Skin Cancer
- Stomach Cancer
- Testicular Cancer
- Thalassemia
- Thrombocytopenia
- Thymoma
- Thyroid Cancer
- Urethral Cancer
- Urethritis
- Urinary Tract Infection (UTI)
- Uterine Cancer
- Vaginal Cancer
ACA Marketplace (Obamacare/HealthCare.gov) plan networks
Insurers selling ACA Marketplace (HealthCare.gov) plans list Dr. Katherine R. Exten as in-network for the following 2026 plans.
Health plans
Anthem Blue Cross and Blue Shield
Network data as of Sep 10, 2026, as reported by the insurer.
Show all 11 plans from Anthem Blue Cross and Blue Shield
| Plan | Plan type | Network tier | New patients |
|---|---|---|---|
| Anthem Bronze Pathway 10600 ($0 Virtual PCP + $0 Select Drugs) | HMO · Bronze | Participating | Accepting new patients |
| Anthem Bronze Pathway 10600 Adult Dental/Vision ($0 Virtual PCP + $0 Select Drugs) | HMO · Bronze | Participating | Accepting new patients |
| Anthem Bronze Pathway 7500 Standard ($0 Virtual PCP + $0 Select Drugs) | HMO · Expanded Bronze | Participating | Accepting new patients |
| Anthem Bronze Pathway 8500 for HSA | HMO · Expanded Bronze | Participating | Accepting new patients |
| Anthem Gold Pathway 2000 Standard ($0 Virtual PCP + $0 Select Drugs) | HMO · Gold | Participating | Accepting new patients |
| Anthem Heart Healthy Bronze Pathway 6000 ($0 Virtual PCP + $0 Select Drugs) | HMO · Expanded Bronze | Participating | Accepting new patients |
| Anthem Heart Healthy Silver Pathway 5000 ($0 Virtual PCP + $0 Select Drugs) | HMO · Silver | Participating | Accepting new patients |
| Anthem Silver Pathway 4000 ($0 Virtual PCP + $0 Select Drugs) | HMO · Silver | Participating | Accepting new patients |
| Anthem Silver Pathway 4000 Adult Dental/Vision ($0 Virtual PCP + $0 Select Drugs) | HMO · Silver | Participating | Accepting new patients |
| Anthem Silver Pathway 5500 for HSA | HMO · Silver | Participating | Accepting new patients |
| Anthem Silver Pathway 6000 Standard ($0 Virtual PCP + $0 Select Drugs) | HMO · Silver | Participating | Accepting new patients |
Antidote Health Plan of Ohio, Inc.
Network data as of Nov 9, 2025, as reported by the insurer.
Show all 15 plans from Antidote Health Plan of Ohio, Inc.
| Plan | Plan type | Network tier | New patients |
|---|---|---|---|
| Bronze Complete 4 $0 Tier-1 PCP Visits, $0 Antidote 24/7 Virtual PCP/Urg/Chronic Care, $0 Core Rx | HMO · Expanded Bronze | Tierone | Not accepting new patients |
| Bronze Complete+Dental 4 $0 Tier-1 PCP Visits, $0 Antidote 24/7 Virtual PCP/Urg/Chronic Care, $0 Core Rx | HMO · Expanded Bronze | Tierone | Not accepting new patients |
| Bronze Elite 4 $0 Tier-1 PCP Visits, $0 Antidote 24/7 Virtual PCP/Urg/Chronic Care/Referred Labs, $0 Advanced Rx | HMO · Expanded Bronze | Tierone | Not accepting new patients |
| Bronze Elite+Dental 4 $0 Tier-1 PCP Visits, $0 Antidote 24/7 Virtual PCP/Urg/Chronic Care/Referred Labs, $0 Advanced Rx | HMO · Expanded Bronze | Tierone | Not accepting new patients |
| Bronze Standard | HMO · Expanded Bronze | Tierone | Not accepting new patients |
| Gold Complete 4 $0 Tier-1 PCP Visits, $0 Antidote 24/7 Virtual PCP/Urg/Chronic Care, $0 Core Rx | HMO · Gold | Tierone | Not accepting new patients |
| Gold Complete+Dental 4 $0 Tier-1 PCP Visits, $0 Antidote 24/7 Virtual PCP/Urg/Chronic Care, $0 Core Rx | HMO · Gold | Tierone | Not accepting new patients |
| Gold Elite 4 $0 Tier-1 PCP Visits, $0 Antidote 24/7 Virtual PCP/Urg/Chronic Care/Referred Labs, $0 Advanced Rx | HMO · Gold | Tierone | Not accepting new patients |
| Gold Elite+Dental 4 $0 Tier-1 PCP Visits, $0 Antidote 24/7 Virtual PCP/Urg/Chronic Care/Referred Labs, $0 Advanced Rx | HMO · Gold | Tierone | Not accepting new patients |
| Gold Standard | HMO · Gold | Tierone | Not accepting new patients |
| Silver Complete 4 $0 Tier-1 PCP Visits, $0 Antidote 24/7 Virtual PCP/Urg/Chronic Care, $0 Core Rx | HMO · Silver | Tierone | Not accepting new patients |
| Silver Complete+Dental 4 $0 Tier-1 PCP Visits, $0 Antidote 24/7 Virtual PCP/Urg/Chronic Care, $0 Core Rx | HMO · Silver | Tierone | Not accepting new patients |
| Silver Elite 4 $0 Tier-1 PCP Visits, $0 Antidote 24/7 Virtual PCP/Urg/Chronic Care/Referred Labs, $0 Advanced Rx | HMO · Silver | Tierone | Not accepting new patients |
| Silver Elite+Dental 4 $0 Tier-1 PCP Visits, $0 Antidote 24/7 Virtual PCP/Urg/Chronic Care/Referred Labs, $0 Advanced Rx | HMO · Silver | Tierone | Not accepting new patients |
| Silver Standard | HMO · Silver | Tierone | Not accepting new patients |
Oscar Health Insurance
Network data as of Sep 15, 2026, as reported by the insurer.
Show all 16 plans from Oscar Health Insurance
| Plan | Plan type | Network tier | New patients |
|---|---|---|---|
| Bronze Classic 4700 | HMO · Expanded Bronze | Preferred | Accepting new patients |
| Bronze Classic Standard | HMO · Expanded Bronze | Preferred | Accepting new patients |
| Bronze Elite + PCP Saver Plus | HMO · Expanded Bronze | Preferred | Accepting new patients |
| Bronze Simple Breathe Easy with Enhanced COPD Benefits | HMO · Expanded Bronze | Preferred | Accepting new patients |
| Bronze Simple Chronic Care CKM | HMO · Expanded Bronze | Preferred | Accepting new patients |
| Bronze Simple Diabetes | HMO · Expanded Bronze | Preferred | Accepting new patients |
| Gold Classic | HMO · Gold | Preferred | Accepting new patients |
| Gold Classic Standard | HMO · Gold | Preferred | Accepting new patients |
| Gold Elite Saver Plus | HMO · Gold | Preferred | Accepting new patients |
| Silver Classic Standard | HMO · Silver | Preferred | Accepting new patients |
| Silver Elite Saver Plus | HMO · Silver | Preferred | Accepting new patients |
| Silver Simple Breathe Easy with Enhanced COPD Benefits | HMO · Silver | Preferred | Accepting new patients |
| Silver Simple Chronic Care CKM | HMO · Silver | Preferred | Accepting new patients |
| Silver Simple Diabetes | HMO · Silver | Preferred | Accepting new patients |
| Silver Simple PCP Saver | HMO · Silver | Preferred | Accepting new patients |
| Silver Simple Women's Health with Menopause Benefits | HMO · Silver | Preferred | Accepting new patients |
This covers ACA Marketplace plans only, as reported by each insurer. It does not include employer, Medicare Advantage, or state-run exchange plans, and a plan missing from this list does not mean Dr. Katherine R. Exten is out of network. Insurer directories can be out of date, so always confirm with the insurer and the office before your visit.
Medicare Enrollment
Dr. Katherine R. Exten is enrolled to bill Medicare as a Practitioner - Medical Oncology (also registered under: Practitioner - Hematology/oncology) .
Bills through: Ohiohealth Corporation
Based on Medicare's public enrollment records as of Sep 29, 2026. This reflects Medicare fee-for-service enrollment only and says nothing about other insurance, quality, outcomes, or board certification.
Payments received
Drug payment
| Novocure | $143 |
| Celgene | $25 |
| Boehringer Ingelheim | $13 |
Other
| Food and Beverage | $183 |
Studies
OHIO STATE UNIVERSITY COLLEGE OF MEDICINE
Graduated in 2011Other ways to reach out
- Website: https://www.ohiohealth.com/find-a-doctor/profile/4158/Katherine-R-Exten-MD
Additional Specialities
- Internist
- Oncologist
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Questions & Answers
Where can you meet with Dr. Katherine Rebecca Exten?
Dr. Katherine Rebecca Exten's office is located at 335 Glessner Avenue in Mansfield, OH 44903.
Does Dr. Katherine Rebecca Exten accept insurance?
Dr. Katherine Rebecca Exten is listed in-network for 42 ACA Marketplace (Obamacare/HealthCare.gov) plans from Anthem Blue Cross and Blue Shield, Antidote Health Plan of Ohio, Inc., Oscar Health Insurance. See the Marketplace plans section for details.
Does Dr. Katherine Rebecca Exten have affiliation with practices?
Dr. Katherine Rebecca Exten is affiliated with Peter Rooney. For the full list of practices see this list.
What conditions does Dr. Katherine Rebecca Exten treat?
Dr. Katherine Rebecca Exten provides treatment for Bone Cancer, Deep Vein Thrombosis (DVT), Melanoma, Migraine, Nasopharyngeal Cancer, Prostate Cancer. For the full list see this list.
Has Dr. Katherine Rebecca Exten affiliation with hospitals?
Dr. Katherine Rebecca Exten is affiliated with OHIOHEALTH MANSFIELD HOSPITAL. For the full list of hospitals see this list.