About the ASC

The surgeons, nurses and anesthesia team who care for you at the ASC are all members of the Mass General staff. At the ASC, you will receive the same excellent care as you would on Mass General's Boston campus, with the added convenience of free parking and easy access to many of the major routes surrounding Boston.

Before your surgery at the Ambulatory Surgery Center at Mass General West

Before Surgery

  • Presurgical videos
  • Making arrangements
  • Diet before surgery
Day of Surgery at the Ambulatory Surgery Center at Mass General West

Day of Surgery

  • Medications
  • Getting dressed
  • Arriving at the ASC
  • PACU
After your surgery at the Ambulatory Surgery Center at Mass General West

After Surgery

  • Leaving the ASC
  • For your pain
  • Getting home

Before your Surgery

watch these instructional videos BEFORE your surgery at the ASC
In the instructional videos, a nurse explains things like using crutches after surgery

Watch these videos before your surgery

Your surgeon wants you to watch these instructional videos before your surgery at the ASC in Waltham. These videos contain important information about recovering from your surgery and any equipment you will need to use at home.

Select the type of procedure to see the appropriate videos to watch.

Pre-Surgery Preparation

Pre-surgery preparation begins at your surgeon's office. If you need labs & an EKG before surgery, your surgeon will arrange these for you.

A registered nurse will call you two to seven days before your surgery for a phone interview. During this telephone interview, the nurse will review your medical history with you and tell you what you can expect at the ASC. An anesthesiologist will review your record & contact you if needed.

If you are scheduled to have your surgery done under Local Anesthesia (with a numbing medication injected at the surgical site and no medications for sedation), your medical history will be reviewed. You will only be contacted if we have any questions.

Making arrangements

  • Arrange for a ride home. You are going home the same day of your surgery, and you must have a reliable adult take you home. We prefer that your ride remain at the ASC during your surgery. S/he can fill your prescriptions and listen to your post-operative instructions. Please be sure that your ride is 100% available to you for the day of surgery as surgical schedules change, and we may need that person to arrive sooner than planned.
  • Arrange for someone to stay with you for the first 24 hours.
  • Prepare your home for your return after surgery. Have shopping and laundry done. Prepare some meals ahead of time. Plan for car rides, as you may not be able to drive for a while.
  • If you have small children, dependent adults or animals that you care for, arrange to have someone help you watch them during the first few days after surgery.

Business day before your surgery

  • If you do not have a confirmed time for your surgery, please contact your surgeon's office in the afternoon on the day prior to surgery.

Evening before your surgery

  • It is very important that you are rested before your surgery, try to sleep.
  • Write down the name and contact number of the person taking you home from the ASC. You will be asked for this information when you get to the ASC.
  • If you plan to have your prescriptions filled at the Mass General West Pharmacy, you will need your drivers license, money or credit card, and your health insurance card.

Diet instructions

  • Do not eat or drink after midnight unless otherwise instructed. This includes food, all liquids, hard candy, gum or mints.
  • Some people are given instructions that allow them to drink clear liquids up until four hours before their scheduled surgery. If you were given these instructions, you may have the following clear liquids: water, apple juice, cranberry juice, black coffee, black tea, carbonated beverages and jello.
  • Please follow your instructions about eating and drinking. Otherwise, your surgery may be cancelled.

Day of your Surgery

Remember, do not eat or drink anything unless you were given different instructions.

arriving at the ASC in Waltham at MG West
Free parking in the garage at 40 2nd Avenue.
the cafeteria at the ASC in Waltham at MG West
Cafeteria where family and friends can wait while a patient is in surgery.


  • If you have been instructed to take any medication take it with a small sip of water.
  • If you were told to bring medication to the ASC, bring it with you.

Getting dressed

  • Wear loose comfortable clothing.
  • Do not wear any jewelry. This includes wedding rings, earrings and other body piercing. All jewelry must be removed prior to surgery.
  • Do not wear nail polish, hair spray, body lotion, perfume or make up.

Getting ready

  • Do not bring valuables to the ASC.
  • Bring your glasses and a case for storing them. You will not be able to wear contact lenses during surgery.
  • Bring your dentures or hearing aides and cases for storing them.
  • You may bring a book or magazine to read before your go into surgery.
  • Plan to arrive at the ASC at the time your surgeon's office instructed you to.

When you arrive at the ASC (40 Second Avenue, Waltham)

  • Go to the 2nd floor and turn right after getting off the elevator. This is the ASC. The phone number is 781-487-2900.
  • You will be registered as a patient and escorted to the preoperative teaching room or pre-operative prep area. If time allows, you will receive your post operative instructions prior to entering the preoperative area. If time does not allow, we will review instructions with your family member. A member of the peri-operative nursing staff will admit you. 

During your surgery: Waiting area for your family member or friend

  • Once you have gone to the operating room, your escort, family member or friend may wait for you in our waiting room.
  • A cafetaria is located next door at 52 Second Ave.
  • Our staff will let your escort, family member or friend know how you are doing and when you will be ready to go home.

At the peri-operative area

  • You will be asked to change into a gown or appropriate dress for your surgical procedure.
  • The nursing staff will start an intravenous (IV) line in a vein.
  • You will be asked several questions in preparation for your surgery. They will ask you:
    • when you last ate or drank
    • if you took any medications that day
    • if you have any allergies to medications, foods, or latex
    • what the proposed surgery is to be
    • the side it is on
    • along with other administrative questions

Your Anesthesia Care Team (ACT)

  • You will meet with an Anesthesiologist, Certified Registered Nurse Anesthetist (CRNA) and possibly a senior anesthesia resident from Mass General.
  • The Anesthesiologist and/or the resident will review your medical history, and discuss the available options for your proposed surgical procedure if they have not previously been discussed in a pre-op phone call.
  • You may also have already discussed these options with your surgeon during your pre-operative office visit. Together we will formulate an anesthetic plan.
  • We will also discuss the possible side effects, risks and benefits of each type of anesthesia. If you have any questions, they will be answered, and you will be asked sign an anesthesia consent form.

Your surgical procedure

  • Your surgeon or a representative for your surgeon will meet you in the prep area and review the planned surgical procedure.
  • The surgical site will be marked and any other questions you have will be answered.
  • If general or MAC anesthesia have been decided on, you will receive IV sedation and proceed directly to the operating room (OR) from this area.
  • However if it is decided that you will receive a regional anesthetic technique, also called a nerve block, you will be sedated in your pre-op slot, and the nerve block will be performed there. After the nerve block is complete and the OR team is ready, you will then proceed to the OR.
  • While in the OR, you will be under the care of the ACT. You will be given medications to make sure that you are comfortable during your surgery. Your blood pressure, heart rate, blood oxygen level, breathing and temperature will be monitored throughout your surgery.

Immediately after your surgery

  • After your surgery, you will be transferred to the post-anesthesia care unit (PACU), also called the recovery room where you will be monitored by a team of PACU nurses under the supervision of the anesthesiologist. These nurses are specially trained in post-anesthetic and critical care.
  • They will monitor your vital signs, help resolve any side effects from the surgery or anesthesia (like nausea or vomiting) and assist in your pain management.
  • Once you are stable, comfortable and meet the discharge criteria, your IV will be removed and you can get dressed.
  • The PACU nurse will then review your post-operative instructions with you and your responsible adult companion, review the instructions for your pain medication prescriptions (which can be filled here at our on-site pharmacy or on your way home), and then escort you to your vehicle.

After your Surgery

Leaving the ASC to go home

  • Your nurse will give you instructions before you go home. You may also have instructions from your surgeon.
  • Your nurse will review the instructions with you and your escort, family member or friend and give you a written copy.
  • You must have a reliable adult drive you home. Arrange for someone to stay with you for the first 24 hours after surgery. You may need help around the house or with getting your prescriptions filled. Do not drive for 24 hours after anesthesia. A nurse will call you the next business day to check on you.

For your pain

  • You may get a prescription for pain medication from your surgeon. Do not drive while taking prescription pain medication. Do not drink alcohol while taking prescription pain medication.

In case of emergency weather conditions

  • The ASC will contact you if your time of your surgery has changed or your surgery will be canceled.


The Mass General Orthopaedic ASC Anesthesia Department is made-up of Anesthesiologists, Certified Registered Nurse Anesthetists and a rotating senior MGH anesthesia resident. Our goal at the ASC is to make your anesthetic and surgical experience the safest it can be and to discharge you home in the most comfortable manner possible.

During your pre-operative visit with your surgeon, you may discuss the different anesthetic options for your surgery, and you will be instructed to fill out Patient Gateway questionnaire online. This needs to be done prior to your pre-op nursing and anesthesia evaluations. Once Patient Gateway is completed and your surgery is scheduled, you will receive a phone call from a nurse. If regional anesthesia, also known as a nerve block, is an option for your surgery, you will receive a call from an anesthesiologist.

There are several different options available for orthopaedic surgical procedures including general anesthesia, MAC (local anesthesia with IV sedation), IV regional anesthesia (Bier Block), regional anesthesia (nerve block) or a combination of the options. The type of anesthesia you will receive for your surgical procedure will be dependent on the several factors: the particular surgical procedure, the surgeon's preference for that procedure, your medical condition, the anesthesiologist's recommendation and the patient's preference.

Types of Anesthesia

Listed below are the different types of anesthesia we use at the ASC. Visit the Anesthesia Options page to read about the type of anesthesia your surgeon uses for different surgeries.

General Anesthesia

General Anesthesia is an anesthetic technique in which the patient's body is cannot feel surgical pain, and the patient is totally unconscious. It may be used as the primary anesthetic or in conjunction with a regional anesthesia based on the surgeon or the patient's preference. [Read more].


At the ASC, sedation plays an important role in making your anesthetic and surgical experience less stressful. The anesthesiologist will use IV sedation either during the performance of a regional block or in the OR during the surgical procedure. [Read more].

Regional Anesthesia

Regional Anesthesia, also known as a nerve block, is an anesthetic technique in which a part or area the patient's body is made numb (put to sleep) using a local anesthetic or numbing medicine. Because orthopedic surgeries involve the extremities, (e.g. Shoulder to hand or hip to foot) regional anesthesia can be a good anesthetic option. [Read more].

Types of Regional Anesthesia

Ankle Block

The ankle block is a regional anesthetic technique used in conjunction with sedation or a light general anesthesia for surgeries of the foot. [Read more].

Axillary Block

The axillary block is a regional anesthetic technique used in conjunction with sedation or a light general anesthesia for surgeries of the elbow, forearm, wrist and hand. [Read more].

Bier Block

The Bier Block or IV Regional is a regional anesthetic technique used for surgery of the forearm, wrist and hand. Unlike the other regional techniques the Bier block or IV regional is a short lasting regional technique and is performed in the operating room itself. [Read more].

Femoral Nerve Block

The femoral nerve block is a regional anesthetic technique used in conjunction with general anesthesia for ACL reconstruction surgery, tibial osteotomies and other more painful complex surgeries involving the knee joint. [Read more].

Infraclavicular Block

The infraclavicular block is a regional anesthetic technique used in conjunction with sedation or a light general anesthesia for surgeries of the upper arm, elbow, forearm, wrist and hand. [Read more].

Interscalene Block

The interscalene block is a regional anesthetic technique usually used in conjunction with sedation or a light general anesthesia for surgeries of the shoulder and upper arm. [Read more].

Popliteal Block

The popliteal nerve block is a regional anesthetic technique used in conjunction with sedation or a light general anesthesia for surgery of the lower leg, ankle and foot. [Read more].

Supraclavicular Block

The supraclavicular block is a regional anesthetic technique usually used in conjunction with a light general anesthesia for surgeries of the upper arm, elbow, forearm, wrist and hand. [Read more].

Adductor Canal/Saphenous Nerve Block

The adductor canal/saphenous nerve block is a regional anesthetic technique used in conjunction with general anesthesia for ACL reconstruction surgery, tibial osteotomies and other more painful complex surgeries involving the knee joint. Some surgeons prefer it over a femoral nerve block because it is purely a sensory nerve block, providing good pain relief, and there is no weakness of the muscles associated with it. [Read more].

Contact Us

40 Second Avenue, Suite 200
Waltham, MA 02451
Driving directions

Phone: 781-487-2900
Fax: 781-895-4837

For Questions Before Your Surgery For Questions the Day of your Surgery
ASC Pre-Surgery Questions 781-487-2900 ASC Main Number 781-487-2950
Insurance Questions 617-726-2294 Mass General West Pharmacy 781-487-4390
Patient Financial Services 617-726-2191 Office of Patient Advocacy 617-726-3370
Interpreter Services 617-726-6966    
TTY 617-724-0354    

Physician Directory

Plastic Surgeons

Nursing Directory

  • Claire O'Brien, RN, MBA, CNOR, NE-BC, Nurse Director
  • Arlene Coccoluto, Lead Schedule
  • Barbara MacLeod, Patient Service Coordinator II
Anesthesia Technicians
  • Cathy Daniels
Certified Registered Nurse Anesthetists
  • Robin Aronson, CRNA
  • Kimberly Bowens, CRNA
  • Lisa Chyka
  • Judith Connell, CRNA
  • Kathleen Foley, CRNA
  • Judy Graham-Garcia
  • Joseph Phelan, CRNA

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