Our first priority is the health, wellness and safety of everyone who walks through our doors.

Bryn Mawr Medical Specialists Association is open for medically necessary office visits and procedures only. BMMSA as a corporation is taking all necessary precautions and following public health safety guidelines in regards to the COVID-19 pandemic.

TeleMedicine appointments are now available. Please contact your physicians office for eligibility, additional information, and with any concerns or questions.

If you are scheduled for an appointment with one of our doctors, we request that you call our office to reschedule your appointment if the answer is yes to any of the following questions:

  • Do you have a cough?
  • Do you have a fever?
  • Do you have any flu-like symptoms?
  • Do you have diarrhea?
  • Have you have traveled internationally in the past 14 days?
  • Have you had close contact with anyone who has traveled internationally in the past 14 days?

We encourage all of our patients to visit the CDC website and Main Line Health COVID-19 Response website to read more about everyday preventative measures and for the most up to date guidance regarding the Coronavirus (COVID-19). If you are concerned that you may have the Coronavirus (COVID-19), please contact your local Health Departments.

If you have any questions regarding our policy and your appointment, please call your doctor’s office.

Jack A. Collazzo, M.D.



  • Gastroenterology

    Board Certified in 1998


Bryn Mawr Medical Arts Pavilion
825 Old Lancaster Road
Suite 340
Bryn Mawr, PA 19010

Phone: (610) 525-9570
Fax: (610) 527-8805

Special Areas of Interest

  • Inflammatory Bowel Disease
  • Liver Diseases
  • Esophageal Disorders

Education & Training

Medical School

Medical College of Pennsylvania


University of Maryland Medical School


University of Maryland Medical School


Graduate Hospital of the University of Pennsylvania


  • Bryn Mawr Hospital – On staff since 2000
  • Lankenau Hospital – On staff since 2000
  • Paoli Hospital – On staff since 2000
  • BMMSA Endoscopy Center – On Staff since 2003

Clinical/Dept Titles

Attending Physician

Recent Clinical Studies Published

  • Collazzo J., Siddigui M., Deren J.: “A Case Report; Concomitant New Onset Ulcerative Colitis and Autoimmune Hemolytic Anemia in an 83 year old Female.” Am J of Gastro, Oct., 1996: 2236-37.
  • Collazzo J.: “The High Cost of Prostate Cancer.” Cortlandt Forum, Oct. 25, 1995: 76.

Current Memberships and Activities

  • American Gastroenterological Association
  • Pennsylvania Society of Gastroenterology
  • American College of Gastroenterology
  • American College of Physicians
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