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About Us

About Vida Medica

Empathy with professionalism. Respectful patient treatment. These are the core values that we at Serenity Health Services live by. Dr. Castro-Zarraga and her staff believe that each patient is unique, deserving to have an individualized chance at overcoming addiction. ​

Dr. Castro-Zarraga has been working with patients from all walks of life to help them overcome substance abuse since 2012, when she was an attending physician at Fitchburg Family Medicine of the University of Massachusetts in Fitchburg, MA.

We work with an effective network of talent to give you the best care.

Dr. Margarita Castro-Zarraga

Dr. Castro-Zarraga is board-certified in family medicine and certified in substance abuse treatment. 

New England Psychiatric Consultants

Serenity Health Services works with New England Psychiatric Consultants for counseling and psychiatric services.

Working with local counselors 

We work with psychologists and counselors to get you the counseling you need. 

About Margarita Castro-Zarraga, MD

Dr. Castro-Zarraga is a family medicine specialist and is certified in Suboxone treatment. She specializes in family medicine, substance abuse treatment, care of vulnerable populations, geriatrics and global health.

Medical School

University of the Philippines - College of Medicine

Residency Training

Cultural Medicine Training Center
Faculty Development for Family Medicine

The Brooklyn Hospital Center
Family Medicine Residency Program

Brigham & Women's Hospital
Junior Clinical Fellow in Cardiac Surgery


Brigham & Women's Hospital

Certifications | Suboxone Treatment

Call now to schedule an appointment with Dr. Castro-Zarraga.

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