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On-Site Medical Center at Seabrook

Personalized Senior Health Care

The best in New Jersey senior health care is right on the Seabrook campus, in our on-site medical center. You’ll receive top-quality care from a full team of doctors who specialize in the medical needs of older adults. Plus, getting to doctors’ appointments doesn’t get much easier than taking a leisurely stroll down the hall from your front door.

  • Same-day appointments. Often, your doctor can see you the same day you call for an appointment, since they see exclusively Seabrook residents.
  • Quality time and attention. You’ll spend more one-on-one time with your physician, who gets to know you as a person—not just a patient.
  • Dedicated physicians. Seabrook doctors are board-certified, and they specialize in the health needs of seniors.
  • Superior convenience. The on-site medical center is just a short, indoor walk away from your front door. Plus, Seabrook also has a pharmacy on campus, so you can fill prescriptions.

It’s handy to have the medical service right here just in case I need closer attention.
June P.

Meet the Seabrook Doctors

All of Seabrook’s physicians are dedicated to the total health and wellness of residents on campus. They strive to provide comprehensive, senior-focused health care.


Rebekah K. Adamczyk, D.O.

Rebekah K. Adamczyk, D.O.

Medical Director

Dr. Adamczyk received her bachelor’s degree from Drew University in Madison, New Jersey. She earned her medical degree at Philadelphia College of Osteopathic Medicine in Philadelphia, Pennsylvania and interned at Union Hospital in Union, New Jersey. Dr. Adamczyk completed her residency in internal medicine at Newark Beth Israel Medical Center in Newark, New Jersey. She is a member of the American Osteopathic Association and the American Medical Association. Dr. Adamczyk is board-certified in osteopathic internal medicine. She joined Seabrook in March 2020.


Tammy Cooper, APN-C

Ms. Cooper received her bachelor's degree in nursing from Thomas Edison State College in Trenton, New Jersey and her master's degree from Rutgers University in Newark, New Jersey. She is a certified advance practice nurse. Ms. Cooper joined the Seabrook team in August 2020.


Christine Costa, L.C.S.W.

Ms. Costa received her bachelor’s and master’s degrees in social work from Monmouth University in West Long Beach, New Jersey. She is a licensed clinical social worker. Ms. Costa joined Seabrook in December 2007.


Aileen Estavillo, M.D.

Dr. Estavillo earned her bachelor’s degree in biology from the University of the Philippines in Baguio City, Philippines. She received her medical degree from the University of the East RMMMC College of Medicine in Quezon City, Philippines. Dr. Estavillo completed her internship and residency in internal medicine at St. John’s Episcopal Hospital in Far Rockaway, New York. Dr. Estavillo is board-certified in internal medicine. She joined Seabrook in April 2010.


John "Jack" King, D.P.M.

Dr. King received his bachelor’s degree from the University of the State of New York in Albany, New York, and his degree in podiatric medicine from Ohio College of Podiatric Medicine in Cleveland, Ohio. He completed his podiatric surgical and medical residency at University Hospital in Cleveland, Ohio. Dr. King is board-certified in podiatric medicine. He joined Seabrook in July 2018.


Sheila M. Penn, A.P.N.

Ms. Penn received her bachelor’s degree in nursing from Monmouth College in Long Branch, New Jersey, and her master’s degree in nursing from Hunter College in New York, New York. She is a certified advance practice nurse. Ms. Penn joined Seabrook in February 2013.


Jona Stead, N.P.

Ms. Stead received her bachelor’s degree in nursing from Christopher Newport University in Newport News, Virginia, and earned an adult gerontology primary care nurse practitioner master’s degree from Maryville University in St. Louis, Missouri. She is a certified adult gerontology nurse practitioner. Ms. Stead joined Seabrook in June 2018.