Ambulatory Care at Riverhead
800 Old Country Road
Riverhead, New York
Call now to schedule your appointment - (631) 540-2297
Offering a range of health care options including:
- General health questions
- Chronic disease care
- Lab tests
- Physical exams
- Routine health screenings
- Immunizations & Vaccinations
Urology
Our experts treat all urologic conditions and urinary tract issues in men and women. Specialized care includes innovative treatments for urinary incontinence, kidney stones, bladder cancer and prostate cancer.
Urogynecology
We specialize in treating female pelvic floor disorders including incontinence, bladder issues, recurring urinary tract infections and pelvic organ prolapse. Our team of experts offers surgical and nonsurgical treatment options for pelvic floor conditions.
St. Francis Heart Center Cardiology
Our nationally recognized cardiologists diagnose and treat heart disease and other complex cardiac conditions. We use advanced diagnostic tests and procedures to manage cardiac conditions and provide comprehensive care.
Pain Management
Our pain management specialists offer advanced treatments to help patients find relief from chronic pain. Treatments include nerve blocks, injections, and minimally invasive procedures to relieve pain from injury and persistent conditions.
Colorectal Care
We provide expert care for rectal and lower gastrointestinal health including screenings, diagnosis and treatments for diverticulitis, inflammatory bowel disease (IBD), polyps, hemorrhoids, and colorectal cancer. We offer advanced treatments and surgeries for colorectal cancer and colon related conditions.
General and Spine Surgery
Our experienced surgeons use advanced technology and techniques to perform a broad range of surgical procedures including spine surgery to treat chronic conditions, illness and injuries. Advanced spine surgery and interventional pain management is available with Long Island Spine Specialists, P.C.
Bariatrics
Our bariatric experts offer both non-surgical and minimally invasive surgical procedures to support your weight loss journey. Bariatric surgeries include laparoscopic and endoscopic gastric sleeve, gastric band, and gastric bypass surgery.

Thomas Pappas, MD, Director of St. Francis Heart Center’s Cardiac Catheterization Lab, is right here at Catholic Health Ambulatory Care at Riverhead.
You only get one heart, and St. Francis Heart Center is the best place to care for it. Now, all our pioneering technology and experience, every award and accolade, and every ounce of our internationally-recognized reputation can be found here in Riverhead under the leadership of Dr. Pappas. So, if you need cardiovascular care, you’re lucky to live on Long Island, and in Riverhead – because Greater Lives Here, too.
To schedule an appointment with Dr. Pappas, call (516) 928-5668.
Cardiology
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Thomas Pappas, MD
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Joseph Minadeo, MD
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Joseph Wiedermann, MD
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Kaitlin Kalogeras, PA
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General and Colorectal Surgery
Primary Care
Pain Management
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Evan Chernoff, DO
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Vlada Frankenberger, DO
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Arjang Abbasi, DO
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Neal Frauwirth, MD
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Joseph Sanelli, DO
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Bariatrics
| Arif Ahmad, MD |
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Spine Surgery
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Thomas J. Dowling Jr., MD
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Thomas Joseph Dowling III, MD
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Sushil Basra, MD
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Laurence Mermelstein, MD
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Christopher Frendo, DO
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Urology and Urogynecology
Ambulatory Care at Riverhead
Hours:
Monday: 9 am - 5 pm
Tuesday: 9 am - 7 pm
Wednesday: 9 am - 5 pm
Thursday: 9 am - 7 pm
Friday: 9 am - 7 pm
Saturday: 8 am - 12 pm
Walk-ins welcome























