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Blue Cross Blue Shield


Empire Plan


Health Republic


Local 1199

Local 456




Medicare RailRoad

Multiplan-used by many Unions 

and Local Insurances





United Healthcare

United Medicare Complete


One or more of our physicians participates in the above insurances.  Please contact the office to verify the participation status of a specific physician in our practice.


The staff of Hudson Valley Surgical Group welcomes your inquiry. Please contact us during our office hours at 914.631.3660

When it comes to surgery, only the best treatment and care will do. From traditional surgical methods to state-of-the-art laparoscopic procedures, Hudson Valley Surgical Group defines “excellence” in surgery.

Hudson Valley Surgical Group
777 N. Broadway, Suite 204
Sleepy Hollow, NY 10591


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A board-certified surgeon, who has been part of the local community fabric for generations.

Hospital Affiliations:
  St. John's Riverside Hospital
Phelps Memorial Hospital Dobbs Ferry Pavilion
Andrus Pavilion
701 North Broadway 128 Ashford Avenue 967 North Broadway
Sleepy Hollow, NY  10591 Dobbs Ferry, NY  10522 Yonkers, NY  10701
914-366-3000 914-693-0700 914-964-4444
Westchester Anesthesia Northeastern Anesthesia 
800 Westchester Ave 118 North Bedford Road
Suite N511 #200
Rye Brook, NY  10573 Mount Kisco, NY  10549
914-428-5454 914-666-8866
Pathology Services:  (Physician Services component)
Phelps Pathology St. John’s Riverside Hospital Pathology
212-563-2627 914-964-4417
Radiology Services:  (Physician Services component)
Phelps Imaging St. John’s Riverside Hospital Imaging
845-446-1100 845-446-1100
Laboratory Services:  
Phelps Patient Accounts St. John’s Riverside Hospital Patient Accounts
914-366-3133 914-964-4417
Assistant Surgeon:   (Not all surgical procedures require an assistant surgeon)  
Robert Raniolo, MD 1518069434
Har Chi Lau, MD 1477655470
Michael Weitzen, DO 1255350054
Please note that not all scheduled surgical services will incur a charge from each of these departments


After Hours Emergencies

If you find it necessary to contact your doctor after our regular office hours, please call Hudson Valley Surgical Group at 914.631.3660. A physician is on-call 24 hours a day. After hours, your call will be answered by our answering service. Our physician will promptly return your call.

In the event of a life-threatening emergency, call 911 immediately, DO NOT WAIT! Identify yourself as a patient of Hudson Valley Surgical Group, and ask the emergency department physician to contact your doctor.

Call 914.631.3660 or click here to Request an Appointment

Hudson Valley Surgical Group
777 N. Broadway, Suite 204, Sleepy Hollow, NY 10591
©2013 Hudson Valley Surgical Group. All Rights Reserved.

Hudson Valley Surgical Group provides the latest in Minimally Invasive Surgery utilizing the most advanced laparoscopic technology available. Hudson Valley Surgical Group is the leader in patient-centered, Minimally Invasive Surgery techniques. Built on the combined strengths of three prominent board-certified surgeons: Robert Raniolo, MD, FACS and Har Chi Lau, MD, FACS -- who both have the distinction of being selected as two of Castle Connolly's Top Doctor in America; and Michael Weitzen, DO, ABOS, Hudson Valley Surgical Group specializes in their distinctive quality-of-life surgical approach that shortens recovery times and has less pain for patients.