DepartmentOur Team Close [Back to Overview](/departments/cardiovascular-center/cardiac-surgery)## Explore department Request an Appointment ## Request an Appointment Request an Appointment ##### By Phone For general scheduling or help finding the right provider, call to speak to a member of our care team. ##### Schedule Online If you’ve already seen a provider in this department, you can request a follow-up with them in MyChart. [Schedule With MyChart](https://mychart.bmc.org/) Close Dialog Refer a Patient ## Refer a Patient Refer a Patient Hours of Operation: Monday–Friday 8 a.m. to 4:30 p.m. Phone: [617.638.7350](tel:617.638.7350) Close Dialog ## Cardiac Surgery # Our Team Explore Cardiac Surgery ### George Tolis, Jr., MD ![](https://assets.bmc.org/transform/bad2a617-a00d-46fe-b605-a4b3ea571f1b/George-Tolis-Headshot?io=transform:fill,width:333,height:500&format=jpg) System Chief of Cardiac Surgery, BMC Health System ### Main Location BMC, Preston Family Building [732 Harrison Ave. 3rd Floor, 3 West Boston, MA 02118](https://www.google.com/maps/search/?q=732+Harrison+Ave.%2C+Boston%2C+MA+02118) BMC Health (Brighton/Nevins) [11 Nevins St Suite 306 Brighton, MA 02135](https://www.google.com/maps/search/?q=11+Nevins+St%2C+Brighton%2C+MA+02135) Methuen [60 East St. Suite 1400 Methuen, MA 01844](https://www.google.com/maps/search/?q=60+East+St.%2C+Methuen%2C+MA+01844) ### Contact [617.638.7350](tel:617.638.7350) Request an Appointment ## Request an Appointment Request an Appointment ### Existing Patients Online: [Schedule With MyChart](https://mychart.bmc.org/)By phone: [Call 617.638.7350](tel:617.638.7350) ### New Patients By phone: [Call 617.638.7350](tel:617.638.7350) Close Dialog Refer a Patient ## Refer a Patient Refer a Patient Fax: 617.638.7382 Phone: [617.638.7350](tel:617.638.7350) Close Dialog [See Full Bio](/about-us/directory/doctor/george-tolis-jr-md) ### Alexandros Karavas, MD ![](https://assets.bmc.org/transform/16b5d61c-f9f3-45c1-847f-4d5385df8a6d/Alexandros-Karavas?io=transform:fill,width:333,height:500&format=jpg) Chief of Cardiac Surgery ### Main Location [732 Harrison Ave. Boston, MA 02118](https://www.google.com/maps/search/?q=732+Harrison+Ave.+Boston%2C+MA+02118) ### Contact [617.638.7350](tel:617.638.7350) Request an Appointment ## Request an Appointment Request an Appointment ### Existing Patients Online: [Schedule With MyChart](https://mychart.bmc.org/)By phone: [Call 617.638.7350](tel:617.638.7350) ### New Patients By phone: [Call 617.638.7350](tel:617.638.7350) Close Dialog Refer a Patient ## Refer a Patient Refer a Patient Phone: [617.638.7350](tel:617.638.7350) Close Dialog [See Full Bio](/about-us/directory/doctor/alexandros-karavas-md) ### Morgan T. Harloff, MD ![](https://assets.bmc.org/transform/09286a14-6f0f-478b-9c80-4dcffd56dc34/Morgan-Harloff_264_2x3?io=transform:fill,width:333,height:500&format=jpg) Cardiothoracic Surgeon ### Main Location [732 Harrison Avenue Boston, MA 02118](https://www.google.com/maps/search/?q=732+Harrison+Avenue+Boston%2C+MA+02118) ### Contact [617.638.5600](tel:617.638.5600) Request an Appointment ## Request an Appointment Request an Appointment ### Existing Patients Online: [Schedule With MyChart](https://mychart.bmc.org/)By phone: [Call 617.638.5600](tel:617.638.5600) ### New Patients By phone: [Call 617.638.5600](tel:617.638.5600) Close Dialog Refer a Patient ## Refer a Patient Refer a Patient Phone: [617.638.5600](tel:617.638.5600) Close Dialog [See Full Bio](/about-us/directory/doctor/morgan-t-harloff-md) ### Advanced Practice Providers (Inpatient) ### Ruby K. Yagnik, FNP-C, CCRN ![Placeholder image for doctor](/themes/custom/bmc_base_theme/assets/images/placeholders/headshoticon-v2.svg) Certified Family Nurse Practitioner ### Main Location [732 Harrison Avenue Preston Family Building 3rd Floor Boston, MA 02118](https://www.google.com/maps/search/?q=732+Harrison+Avenue+%3Cbr%2F%3E+Preston+Family+Building+3rd+Floor+%3Cbr%2F%3E+Boston%2C+MA+02118) Request an Appointment ## Request an Appointment Request an Appointment ### Existing Patients Online: [Schedule With MyChart](https://mychart.bmc.org/) Close Dialog Refer a Patient ## Refer a Patient Refer a Patient Close Dialog [See Full Bio](/about-us/directory/doctor/ruby-k-yagnik-fnp-c-ccrn) ### Adrienne Berkowitz, PA-C ![](https://assets.bmc.org/transform/f1a9a5f7-9c94-470b-af30-c7cac72a3436/Berkowitz-Adrienne-jpg?io=transform:fill,width:333,height:500&format=jpg) ### Main Location 1 Boston Medical Center Pl Boston, MA 02118 ### Contact [617.638.8000](tel:617.638.8000) Request an Appointment ## Request an Appointment Request an Appointment ### Existing Patients Online: [Schedule With MyChart](https://mychart.bmc.org/)By phone: [Call 617.638.8000](tel:617.638.8000) ### New Patients By phone: [Call 617.638.8000](tel:617.638.8000) Close Dialog Refer a Patient ## Refer a Patient Refer a Patient Phone: [617.638.8000](tel:617.638.8000) Close Dialog [See Full Bio](/about-us/directory/doctor/adrienne-berkowitz-pa-c) ### Sudeshna Chaudhuri, PA-C ![Placeholder image for doctor](/themes/custom/bmc_base_theme/assets/images/placeholders/headshoticon-v2.svg) ### Main Location 1 Boston Medical Center Pl Boston, MA 02118 ### Contact [617.638.8000](tel:617.638.8000) Request an Appointment ## Request an Appointment Request an Appointment ### Existing Patients Online: [Schedule With MyChart](https://mychart.bmc.org/)By phone: [Call 617.638.8000](tel:617.638.8000) ### New Patients By phone: [Call 617.638.8000](tel:617.638.8000) Close Dialog Refer a Patient ## Refer a Patient Refer a Patient Phone: [617.638.8000](tel:617.638.8000) Close Dialog [See Full Bio](/about-us/directory/doctor/sudeshna-chaudhuri-pa-c) ### Charlene P Dearden, PA-C ![Placeholder image for doctor](/themes/custom/bmc_base_theme/assets/images/placeholders/headshoticon-v2.svg) ### Main Location 1 Boston Medical Center Pl Boston, MA 02118 ### Contact [617.638.8000](tel:617.638.8000) Request an Appointment ## Request an Appointment Request an Appointment ### Existing Patients Online: [Schedule With MyChart](https://mychart.bmc.org/)By phone: [Call 617.638.8000](tel:617.638.8000) ### New Patients By phone: [Call 617.638.8000](tel:617.638.8000) Close Dialog Refer a Patient ## Refer a Patient Refer a Patient Phone: [617.638.8000](tel:617.638.8000) Close Dialog [See Full Bio](/about-us/directory/doctor/charlene-p-dearden-pa-c) ### Jacqueline Lasley, PA-C ![](https://assets.bmc.org/transform/9d32dc37-927f-4dd6-8c9d-7f7fe8074745/Jacqueline-Lasley_rev-jpg?io=transform:fill,width:333,height:500&format=jpg) ### Main Location 1 Boston Medical Center Pl Boston, MA 02118 Boston, MA 02118 ### Contact [617.638.8000](tel:617.638.8000) Request an Appointment ## Request an Appointment Request an Appointment ### Existing Patients Online: [Schedule With MyChart](https://mychart.bmc.org/)By phone: [Call 617.638.8000](tel:617.638.8000) ### New Patients By phone: [Call 617.638.8000](tel:617.638.8000) Close Dialog Refer a Patient ## Refer a Patient Refer a Patient Phone: [617.638.8000](tel:617.638.8000) Close Dialog [See Full Bio](/about-us/directory/doctor/jacqueline-lasley-pa-c) ### J. Todd Steinwagner, PA-C ![Placeholder image for doctor](/themes/custom/bmc_base_theme/assets/images/placeholders/headshoticon-v2.svg) ### Main Location 1 Boston Medical Center Pl Boston, MA 02118 ### Contact [617.638.8000](tel:617.638.8000) Request an Appointment ## Request an Appointment Request an Appointment ### Existing Patients Online: [Schedule With MyChart](https://mychart.bmc.org/)By phone: [Call 617.638.8000](tel:617.638.8000) ### New Patients By phone: [Call 617.638.8000](tel:617.638.8000) Close Dialog Refer a Patient ## Refer a Patient Refer a Patient Phone: [617.638.8000](tel:617.638.8000) Close Dialog [See Full Bio](/about-us/directory/doctor/j-todd-steinwagner-pa-c) ### Eric White, PA-C ![Placeholder image for doctor](/themes/custom/bmc_base_theme/assets/images/placeholders/headshoticon-v2.svg) ### Main Location 840 Harrison Avenue Boston, MA 02118 ### Contact [617.638.7350](tel:617.638.7350) Request an Appointment ## Request an Appointment Request an Appointment ### Existing Patients Online: [Schedule With MyChart](https://mychart.bmc.org/)By phone: [Call 617.638.7350](tel:617.638.7350) ### New Patients By phone: [Call 617.638.7350](tel:617.638.7350) Close Dialog Refer a Patient ## Refer a Patient Refer a Patient Phone: [617.638.7350](tel:617.638.7350) Close Dialog [See Full Bio](/about-us/directory/doctor/eric-white-pa-c) #### Additional Team Members - Elizabeth Marks, PA ### Advanced Practice Providers (Outpatient) ### Oluwakemi (Kemi) Olotu, NP ![](https://assets.bmc.org/transform/4bff7b8b-ae79-494d-8639-b24336645297/Oluwakemi_Olutu_131-jpg?io=transform:fill,width:333,height:500&format=jpg) ### Main Location Request an Appointment ## Request an Appointment Request an Appointment ### Existing Patients Online: [Schedule With MyChart](https://mychart.bmc.org/) Close Dialog Refer a Patient ## Refer a Patient Refer a Patient Close Dialog [See Full Bio](/about-us/directory/doctor/oluwakemi-kemi-olotu-np) #### Additional Team Members - Marlene Putnam, NP