Photo of Dr. Justine DeCastro

Dr. Justine DeCastro, MD

DPC Family Medicine physician, Mt. Pleasant, SC

Harborside Healthcare
5.0 (10 reviews)

Dr. Justine DeCastro is the owner and founder of Harborside Healthcare, a membership primary care practice in Mt Pleasant, South Carolina.

1703 John B White Sr Boulevard, Mt. Pleasant, SC 29301
At a glance
Practice model
Flat membership fee, with on-site and virtual care
Board certification
American Board of Family Medicine

Facts on this page last checked October 2026. How we check doctors

About Dr. DeCastro

Dr. DeCastro is the owner and founder of Harborside Healthcare, which offers a hybrid of on-site and virtual primary care with direct access and communication with the patient's physician. She offers a simple, flat membership fee. She provides personalized care with a clear focus on a long term trusting relationship with patients.

She has built close ties with other physicians and specialists in the community and communicates with them to coordinate care. She completed undergraduate studies at the University of South Carolina in Columbia and her medical degree at the University of South Carolina School of Medicine, and she completed her family medicine residency at the Medical University of South Carolina. She was awarded a Health Professions Scholarship with the United States Air Force and served as a Captain and General Medical Officer at Barksdale Air Force Base in Shreveport, Louisiana.

Membership and fees

Harborside Healthcare charges a simple, flat membership fee.

Education and credentials

Degree
MD
College
University of South Carolina, Columbia
Medical school
University of South Carolina School of Medicine
Residency
Family medicine, Medical University of South Carolina
Board certification
American Board of Family Medicine
NPI
1194936831

Hospital and practice affiliations

Owner and founder, Harborside Healthcare
President of the Charleston County Medical Society

Location

1703 John B White Sr Boulevard, Mt. Pleasant, SC 29301
Harborside Healthcare practice page
Directions

Recognition and research

Awards

Awarded Best Primary Care Physician and Best Primary Care Practice at Sewee Family Medicine by Mt Pleasant Magazine in 2020.
Recognized as a Leader in Health and Medicine in the 2026 Women in Health edition of Healthlinks Magazine.

Patient reviews

5.0
10 reviews
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Write a review
Rated 5 out of 5

Awesome!

"Very professional care and consult."

FMDD UserDec 2023
Rated 5 out of 5

Amazing!

"Guided me in choosing the best treatment option."

FMDD UserNov 2023
Rated 5 out of 5

Great!

"Enlightened me about my condition."

FMDD UserOct 2023

Questions patients ask

Does Dr. DeCastro offer a membership?

Harborside Healthcare charges a simple, flat membership fee.

Is Dr. DeCastro board certified?

Dr. DeCastro is board certified by the American Board of Family Medicine.

Where did Dr. DeCastro train?

She completed her medical degree at the University of South Carolina School of Medicine. She completed her family medicine residency at the Medical University of South Carolina.

Does Dr. DeCastro offer telehealth?

Harborside Healthcare offers virtual primary care as well as on-site visits.

Where is Dr. DeCastro's office?

Patients are seen by appointment only at 246 Mathis Ferry Road Ste 100, Mt Pleasant, SC 29464.

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