Photo of Dr. Kristen Island

Dr. Kristen Island, MD

Concierge Family Medicine physician, Brooklyn, NY

One Medical
5.0 (14 reviews)

Dr. Island is a family medicine physician at One Medical's Park Slope office in Brooklyn who sees patients of all ages.

794 Union Street, Brooklyn, NY 11215
At a glance
Practice model
Membership-based primary care that also works with insurance
Patient ages
All ages

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

About Dr. Island

Dr. Island is a doctor at One Medical's Park Slope office in Brooklyn and sees patients of all ages. She studied medicine at Albany Medical College, completed a residency at the University of Connecticut, and holds a master's degree in nutrition from Columbia University. She works to partner with patients and families to meet their unique health and wellness goals.

She has a special interest in preventive medicine, nutrition, and obesity medicine. Outside work, she enjoys cooking, trying new restaurants, yoga, hiking, and biking.

Membership and fees

One Medical is a membership-based primary care practice.

Services

Preventive medicine Nutrition Obesity medicine
What family medicine doctors commonly treat

Education and credentials

Degree
MD
College
New York University (bachelor's in biochemistry)
Medical school
Albany Medical College
Graduate school
Columbia University (master's in nutrition)
Residency
University of Connecticut

Hospital and practice affiliations

One Medical, Park Slope office in Brooklyn

Location

794 Union Street, Brooklyn, NY 11215
One Medical practice page
Directions

Patient reviews

5.0
14 reviews
5 star14
4 star0
3 star0
2 star0
1 star0
Write a review
Rated 5 out of 5

"I felt genuinely cared for during my visit. The consultation was thorough."

FMDD UserMay 2024
Rated 5 out of 5

"Approaches difficult diagnoses with honesty and compassion."

FMDD UserFeb 2024
Rated 5 out of 5

Took time to understand & check my condition

"Took time to understand & check my symptoms in a wholistic way before providing a diagnosis."

FMDD UserJun 2023
Rated 5 out of 5

She is kind and attentive

"I immediately feel at ease because she is kind and attentive to what I have to say."

FMDD UserJun 2023
Rated 5 out of 5

Pleasant, Candid, and Knowledgeable

"Great doctor - pleasant, candid, and knowledgeable. The receptionists were also really helpful."

FMDD UserMay 2023
Rated 5 out of 5

So caring and smart!!

"Dr Karlyn is very smart and knowledgeable. I appreciate her tremendously."

FMDD UserJan 2023
Rated 5 out of 5

I trust her with my care

"Dr. Karlyn has been a great help to my wife and me. She is incredibly responsive, deeply concerned for her patients, extremely knowledgeable, and very approachable. We are extremely grateful that we switched our care to her."

FMDD UserNov 2022

Questions patients ask

Does Dr. Island take insurance, or offer a membership?

One Medical is a membership-based primary care practice that also works with insurance.

Where did Dr. Island train?

She studied medicine at Albany Medical College and completed a residency at the University of Connecticut.

Where is Dr. Island's office?

Dr. Island is at One Medical's Park Slope office in Brooklyn.

Does Dr. Island see children?

She sees patients of all ages.

Does Dr. Island offer telehealth?

One Medical offers on-demand video calls and video visits.

Are you Dr. Island? Claim this profile for free. Report a correction.

Ready to contact One Medical?