John Matthew Castor, MD
Gastroenterology Internal Medicine
John Matthew Castor is a Gastroenterology Internal Medicine specialist based in Columbus, OH with over 21 years of clinical experience. Offers virtual telehealth visits.
Patients across OH can see John Matthew Castor, MD in person in Columbus or via virtual visit — no travel required. Trained at Clvlnd Clinic Lerner College of Med of Case Wstn Rsv University (class of 2005), he has been practicing for over 21 years. Among his Medicare patients, common conditions include high cholesterol, hypertension, and arthritis (per CMS data).
Older · 934dNPPES updated 2023-11-02 · verify NPI on CMS · Verify license at State Medical Board of Ohio
Contact & Location
Practice Location
3400 Olentangy River Rd, Columbus, OH 43202-1523
What This Doctor Treats Most
Based on Medicare claims data — here's what patients commonly see this doctor for
Based on Medicare data, this doctor primarily manages High Cholesterol, Hypertension, and Arthritis.
Elevated cholesterol or triglycerides that increase heart disease risk
High blood pressure — a leading risk factor for heart disease and stroke
Joint inflammation causing pain, swelling, and stiffness
A condition where the body cannot properly regulate blood sugar levels
Reduced blood flow to the heart muscle, commonly known as coronary artery disease
Conditions affecting emotional state, including depression and bipolar disorder
A mood disorder causing persistent sadness and loss of interest in activities
Gradual loss of kidney function over time, often linked to diabetes or hypertension
Percentage of this provider's Medicare patients diagnosed with each condition. Source: CMS Utilization Data.
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Background & Specialty
Education, training, and specialty classification from CMS NPPES and Medicare records.
Graduated medical school · 2005
Clvlnd Clinic Lerner College of Med of Case Wstn Rsv University
Board certified · Nov 1, 2023
Self-reported via NPPES
21 years in practice
Experienced
Gastroenterologists diagnose and treat digestive system disorders including GERD, irritable bowel syndrome (IBS), inflammatory bowel disease (Crohn's, ulcerative colitis), liver disease, pancreatitis, and colon polyps. They perform endoscopies and colonoscopies.
Taxonomy: 207RG0100X
Education & Training
Clvlnd Clinic Lerner College of Med of Case Wstn Rsv University (Class of 2005)
Virtual Internal Medicine Care With John Matthew Castor
NPPES records indicate this provider offers telehealth services. Contact the office to confirm availability and scheduling.
Schedule a virtual visit with John Matthew Castor for cholesterol management, blood pressure monitoring, arthritis follow-ups — no travel to Columbus required. The office sends a secure video link before your appointment. Most visits take 15–30 minutes.
Frequently Asked Questions
Common questions about John Matthew Castor
Dr. Castor is listed as active in the NPI registry with telehealth listed in Columbus, OH. NPI status alone doesn't confirm open availability — call the office to confirm. Phone: (614) 754-5500.
Sourced from CMS NPPES · OIG LEIE · CMS Physician Comparator. See Data Methodology.
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Medical Disclaimer: NPI Telehealth is a provider directory for informational purposes only. This page does not constitute medical advice, diagnosis, or treatment recommendations. Provider data is sourced from the CMS NPPES federal registry and public Medicare datasets. NPI Telehealth does not verify clinical qualifications beyond federal records. Data may not reflect real-time availability — always contact the provider's office directly to confirm details before seeking care.
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