From Pharmacy Training to Oncology Leadership

“Unlike many pharmacy programs that offer only one year of clinical rotations, Touro required one and a half,” says Berezin, who graduated summa cum laude, was inducted into the National Rho Chi Pharmacy Honor Society, and holds licensure in multiple states along with certifications in pharmacist-based immunization delivery and basic life support. “We trained in pharmacies, hospitals, clinics, community health centers and labs. That breadth of real-world experience exposed me to the full range of what a pharmacy career can be.”

That foundation shaped her desire for breadth, depth and impact in her future career.

Berezin began her professional journey at The Mount Sinai Hospital in New York, where she supported oncology, sterile compounding, pediatrics and inpatient services. She later joined Greater Baltimore Medical Center, contributing to the launch of its specialty pharmacy while providing anticoagulation management and inpatient clinical support.

Each role reinforced her growing interest in oncology, and in the critical role pharmaceuticals play in improving outcomes for patients with cancer.

Most recently, Berezin supported AstraZeneca Oncology in lung cancer as a senior scientific communications specialist, where she partnered cross-functionally on multiple product launches, developed strategic medical content, and served as a communications lead for National Comprehensive Cancer Network guideline updates. The work deepened her commitment to ensuring that clinicians have timely access to accurate, evidence-based information.

“I’m deeply passionate about oncology and about helping patients receive the most appropriate treatments,” says Berezin, a married mother of two young children. “I’ve built that passion into my career by working across the spectrum of care: from hospital-based clinical practice to pharmaceutical medical information, and now as a medical science liaison. Each step has allowed me to support better decision-making and ultimately improve patient outcomes.”

Berezin then began what she calls her dream job. She is a field medical director (medical science liaison) at Pfizer.

In this role, Berezin meets with clinical oncologists, researchers, healthcare providers and key opinion leaders across multiple states. Her team focuses on solid tumors, including colorectal, gynecologic and melanoma cancers. She regularly attends national and regional medical conferences and serves as a trusted scientific partner to clinicians.

“It’s important to understand that this role is not about sales,” Berezin emphasizes. “My responsibility is to be a scientific expert: to share unbiased, evidence-based information, engage in meaningful scientific exchange, and bring real-world clinical insights back to the company to help inform research and strategy.”

Her work is especially critical in today’s rapidly evolving oncology landscape, where many therapies are now targeted treatments that require biomarker testing to determine patient eligibility.

“Educating clinicians about testing and having those scientific discussions can make a real difference,” she explains. “Those conversations can help ensure patients receive the most appropriate therapy for their specific disease.”

For Berezin, the urgency of oncology is what makes the work so meaningful.

“Oncology is an incredibly fast-paced and time-sensitive field,” she says. “Patients are facing serious, often life-threatening illnesses, and timely access to the right therapy can directly impact outcomes. In my role, I’m able to support clinicians with high-quality scientific information at scale, helping ensure more patients receive the right treatment at the right time. That’s how I know I’m contributing to better outcomes and, ultimately, saving lives.”