Dr. Daniel Horowitz – Internist / Geriatrician | Newmarket, ON

Dr. Daniel Horowitz is a dedicated Internist / Geriatrician committed to providing comprehensive medical care for adults, with a focus on complex conditions and geriatric health. Practicing in Newmarket, ON, he serves the surrounding communities and adheres to the high standards set by the College of Physicians and Surgeons of Ontario (CPSO). His role involves diagnosing, managing, and coordinating care for adult patients with diverse health needs, emphasizing personalized treatment plans to improve quality of life.

He graduated with a Medical Degree from All Saints University of Medicine in Aruba in 2009. Dr. Horowitz has completed extensive post-graduate medical training, including residencies and certifications in Internal Medicine and Geriatric Medicine. His clinical expertise encompasses a broad spectrum of adult health issues, with a special focus on aging-related conditions, chronic disease management, and complex medical cases.

Dr. Horowitz’s clinical philosophy centers on clear and educational communication, ensuring patients understand their health conditions and treatment options. He is committed to serving the Newmarket community with compassionate, evidence-based care. Fluent in English and Russian, he strives to create an accessible and welcoming environment for all patients seeking expert internal and geriatric medical services.

Dr. Horowitz provides expert care for adults with a wide range of medical conditions, including:

Endocrine & Metabolic Disorders

• Thyroid Disorders: Management of hypothyroidism, hyperthyroidism, thyroid nodules, and other thyroid conditions.
• Adrenal Gland Disorders: Diagnosis and management of conditions affecting the adrenal glands, such as adrenal insufficiency.
• Osteoporosis & Metabolic Bone Disease: Diagnosis, risk assessment, and treatment strategies for conditions affecting bone strength and metabolism.

Management of Chronic Diseases

• Dyslipidemia (High Cholesterol): Assessment and management of abnormal lipid levels through lifestyle advice and medication to reduce cardiovascular risk.
• Diabetes Mellitus (Type 1 & 2): Comprehensive management including glucose control strategies, complication prevention, and patient education.
• Cardiovascular Conditions: Medical management of heart failure, coronary artery disease (stable), arrhythmias (like atrial fibrillation), and valvular heart disease.

Select Infectious & Inflammatory Conditions

• Complex Infections Consultation: Providing diagnostic and management expertise for challenging infections, often in consultation with primary care.
• Fever of Unknown Origin (FUO) Workup: Systematic investigation to determine the cause of prolonged, unexplained fevers.
• Management of Select Rheumatologic Conditions: Care for common inflammatory conditions such as gout or polymyalgia rheumatica, or initial assessment for suspected autoimmune diseases.

Dr. Horowitz manages a wide range of complex adult and geriatric health conditions. This list highlights common areas of focus. If your condition is not listed, please note that internal medicine specialists address diverse and often multi-systemic diseases. Consultation is typically initiated via referral from your primary care physician.

• Management of Chronic Respiratory Conditions: Ongoing care for conditions such as COPD, asthma, and interstitial lung diseases, focusing on symptom control and exacerbation prevention.
• Management of Complex Chronic Diseases: Ongoing care and treatment optimization for adults managing multiple chronic conditions such as diabetes, heart disease, kidney disease, hypertension, and respiratory illnesses.
• Non-Surgical Management of Cardiovascular Conditions: Medical management of conditions like stable coronary artery disease, heart failure, arrhythmias, and hypertension.
• Osteoporosis and Bone Health Management: Screening, diagnosis, and treatment of osteoporosis to prevent fractures in older adults.
• Preventative Health Risk Assessment: Evaluating individual risk factors for major chronic diseases (e.g., cardiovascular disease, osteoporosis) and developing preventative strategies.

Note: This list represents some of the key services offered by Dr. Horowitz. As a specialist in Internal Medicine and Geriatric Care, he provides comprehensive diagnostic and management services. For specific inquiries about whether your condition falls within Dr. Horowitz's scope of practice, please discuss with your referring physician or contact the clinic.

All medical services are provided in accordance with the standards of practice set by the College of Physicians and Surgeons of Ontario (CPSO).

Dr. Horowitz’s practice is situated in the central Gorham-College Manor neighbourhood of Newmarket, ON. The clinic is located within Kingston General Hospital, providing easy access for patients. The location offers convenient Highway 404 access and proximity to the Newmarket GO Station, facilitating transportation options. Patients can reach the clinic via York Region Transit (YRT) / Viva bus services. The facility is wheelchair accessible. Parking is available at the facility.

How is payment handled for appointments with Dr. Horowitz? Is it covered by Ontario Health Insurance Plan (OHIP)?

In ON, medical consultations with specialists like Dr. Horowitz are typically covered by your provincial health insurance (Ontario Health Insurance Plan (OHIP)) when you present a valid health card and have the required referral. You generally do not pay directly for the consultation service itself. Some specific procedures, forms, or administrative tasks might not be covered by Ontario Health Insurance Plan (OHIP) and may incur a separate fee according to provincial guidelines. Please inquire if you have questions about uninsured services.

Can I book an appointment directly or do I absolutely need a referral?

A referral from your family physician or another medical specialist is required to see Dr. Horowitz. As experts in Internal Medicine and Geriatric Care, Internists and Geriatricians see patients based on specific medical questions posed by the referring doctor. This ensures continuity of care and that the consultation is appropriate for your needs. Please have your doctor forward the referral information.

How long should I expect my appointment to last?

Initial consultations with Dr. Horowitz are comprehensive and typically require more time, often ranging from 45 to 75 minutes, depending on the complexity of your medical history and concerns. Follow-up appointments are usually shorter. We recommend allowing ample time for your visit, including check-in and potential waiting periods.

What is the appointment cancellation policy?

We understand that unforeseen circumstances arise. If you need to cancel or reschedule your appointment, please provide at least 24-48 hours notice so we can offer the time slot to another patient waiting for consultation. Failure to provide sufficient notice may result in a missed appointment fee (if applicable per clinic policy). Please contact the office directly to make changes.

Kingston General Hospital
596 Davis Drive, Department of Obstetrics and Gynecology
Newmarket, ON L3Y 2P9

Phone: (905) 895-4521

The facility is wheelchair accessible.

Dr. Horowitz is a licensed physician regulated by the College of Physicians and Surgeons of Ontario (CPSO) under the Medicine Act, 1991 in ON. Patients are typically seen by referral from their primary care physician.

Verify registration with the College of Physicians and Surgeons of Ontario (CPSO): https://doctors.cpso.on.ca/DoctorDetails/Horowitz-Daniel/0282268-97537