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11 Wilbraham Road
Springfield MA, 01109


413-794-3710 (General Information)

413-794-9649 (HIV Program)

413-794-8723 (HIV/AIDS Counseling and Testing)



413-794-1428 (HIV/AIDS Counseling and Testing)

Office Hours:

Monday - Friday  8:00 a.m. - 5:00 p.m.

Evening available by appointment

HIV/AIDS Counseling and Testing: Monday - Friday - 8:30 a.m. to 4:30 p.m.

Physicians & Staff:

Elizabeth E. Boyle, M.D., Medical Director

Nikolaus Kashey, M.D., M.P.H., Associate Medical Director

Gregory Delozier, R.N., Nurse Manager

Andrew H. Balder, M.D.

Samuel H. Borden, M.D.

Jonna I. Gaberman, M.D.

Pixie J. Plummer, M.D.

Yekatherine (Kathy) Rasmussen, M.D.

Biljana Simikic, D.O.

Ingrid E. Statz, M.D.

Sharon Wretzel, MD

Julius M. Larioza, M.D.


Learn more about our physicians at Find a Doctor


Jason Luszcz, PA-C

Mark Mozzi, PA-C

Marie Meckel, PA-C

Eduardo Rosadio, DNP

Ines Nkwenti, NP

Jamilah Alexander, PA, M.P.H. HIV Clinical Coordinator

Lisa Clinton, Program Supervisor HIV/Aids Prevention & Screening

Rebecca Reed, NP, HIV/Aids Prevention & Screening

Jane Bixby, LPN, HIV/Aids Prevention & Screening


Services Include:

The Baystate Mason Square Neighborhood Health Center, a service of Baystate Medical Center, offers a wide variety of primary care and specialty care services for people of all ages, from birth to adulthood.  Programs include:

  -  HIV Program - HIV counseling, management, confidential testing, medical care and case management

  -  HIV/AIDS Counseling and Testing - for high risk populations (intravenous drug users and their partners, as well as partners of HIV positive individuals).

  -  Hepatitis Assessment - Screening and testing during regular hours, Monday - Friday, 8:30 a.m. - 4:30 p.m.  Results and Vaccinations for uninsured/high risk individuals - Wednesdays 8:00 a.m. to 3:30 p.m.

  -  STD Clinic - diagnosis and treatment of sexually transmitted diseases (STD).  No appointment needed. Tuesday 8:30am-4:30pm & Friday 1:00pm - 4:30pm

About Our Practice: Baystate Mason Square Neighborhood Health Center (BMSNHC) is a full service health center affiliated with Baystate Medical Center, staffed by more than 40 doctors, nurse practitioners, nurse-midwives and many other health care professionals.  Our goal is to provide our patients with the best available healthcare in a team environment using evidence-based medicine for treatment of chronic conditions such as diabetes, asthma, hypertension and cardiovascular diseases.  
MHQP Rating: See how the Massachusetts Health Quality Partners rated BMP primary care practices overall for clinical quality. 

We participate in most insurance programs offered in our area. If you have any questions about whether your specific health plan covers our services, please call the toll-free number on the back of your insurance member ID card.


If you have commercial insurance coverage, primary or secondary, we will submit a claim to your insurance carrier. You are responsible for all balances due after your insurance company pays its portion, as well as for any co-payments required by your insurance company at the time of the visit.


If you are concerned about billing or have a question about acceptable insurance, please call one of the following numbers.


  •  For Physician Billing – (413) 794-5700


  •  For Hospital Billing – (413) 794-9999



Patient-Centered Medical Home

We are a Patient-Centered Medical Home practice - where you will have a direct relationship with your doctor who coordinates a team of healthcare professionals to manage your care. Learn more by clicking here.