Kristen A. O'brien
Experienced in Subacute Combined Degeneration
Experienced in Subacute Combined Degeneration
3 Technology Drive, Suite 100, 
East Setauket, NY 

Overview

Board certified in Family MedicinePracticing in Suffolk County for past 11 yearsSpecializing in women's health and mental healthFull scope family medicine practiceWill accept patients at age 13 and older.

Dr. O'brien is rated as an Experienced provider by MediFind in the treatment of Subacute Combined Degeneration. Her top areas of expertise are High Cholesterol, Vitamin D Deficiency, Infant Hyperglycemia, and Folate Deficiency.

Her clinical research consists of co-authoring 15 peer reviewed articles. MediFind looks at clinical research from the past 15 years.

Graduate Institution

SUNY At Buffalo-School Of Medicine & Biomedical Sciences

Specialties

Family Medicine

Licenses

Family Medicine in NY

Board Certifications

American Board Of Family Medicine

Hospital Affiliations

Mather Hospital
Hofstra/Northwell School Of Medicine/Nursing
Huntington Hospital
South Shore University Hospital
Katz Institute For Women's Health

Languages Spoken

English

Gender

Female

Awards

Patients' Choice Award Recipient (2025
2024)

Insurance

Accepted insurance can change. Please verify directly with the provider.

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Accepted insurance plans:

Aetna
  • EPO
  • HMO
  • POS
  • PPO
Anthem BCBS
  • EPO
  • HMO
  • POS
  • PPO
Blue Cross Blue Shield
  • EPO
  • HMO
  • POS
  • PPO
CareFirst
  • HMO
  • POS
  • PPO
Cigna
  • EPO
  • HMO
  • PPO
EmblemHealth
  • HMO
  • INSURANCE PLAN
  • MANAGED MEDICAID PLAN
  • MEDICARE MAPD
  • MEDICARE PDP
  • OTHER COMMERCIAL
  • OTHER MEDICARE PART D
Health Care Services Corporation
  • HMO
  • INSURANCE PLAN
  • MANAGED MEDICAID PLAN
  • MEDICARE MAPD
  • MEDICARE PDP
  • MEDICARE SNP
  • OTHER COMMERCIAL
  • OTHER MEDICARE
  • OTHER MEDICARE PART D
  • PPO
Health First
  • HMO
  • POS
Highmark
  • EPO
  • HMO
  • PPO
Humana
  • HMO
  • INDEMNITY
  • POS
  • PPO
Independent Health
  • EPO
  • POS
  • PPO
Managed Medicaid
  • OTHER MANAGED MEDICAID
Medicaid
  • OTHER MEDICAID
  • STATE MEDICAID
MVP Health
  • EPO
  • PPO
Northwell Health
  • INSURANCE PLAN
UnitedHealthcare
  • EPO
  • HMO
  • POS
  • PPO
Walgreens
  • MEDICARE DISCOUNT CARD
  • MEDICARE PDP
  • OTHER MEDICARE
Wellcare
  • EPO
  • HMO
  • INSURANCE PLAN
  • MANAGED MEDICAID PLAN
  • MEDICARE MAPD
  • MEDICARE PDP
  • MEDICARE SNP
  • MEDICARE-MEDICAID PLAN
  • OTHER MEDICARE
  • OTHER MEDICARE PART D
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Locations

Mather Primary Care at East Setauket
3 Technology Drive, Suite 100, East Setauket, NY 11733

Clinical Research

Clinical research consists of overseeing clinical studies of patients undergoing new treatments and therapies, and publishing articles in peer reviewed medical journals. Providers who actively participate in clinical research are generally at the forefront of the fields and aware of the most up-to-date advances in treatments for their patients.


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Blessan Thomas is a primary care provider, practicing in Family Medicine in Lk Ronkonkoma, New York. Dr. Thomas is rated as an Advanced provider by MediFind in the treatment of Subacute Combined Degeneration. His top areas of expertise are High Cholesterol, Vitamin D Deficiency, Multiple Carboxylase Deficiency, and Vitamin B12 Deficiency Anemia.

Frequently Asked Questions about Dr. Kristen A. O'brien

How do I make an appointment with Dr. Kristen A. O'brien?

You can book an appointment with Dr. Kristen A. O'brien by calling their office at 631-331-1000. MediFind provides direct contact information so you can schedule visits, second opinions, or consultations without navigating third-party calendars.

Is Dr. Kristen A. O'brien a top-rated expert for High Cholesterol?

MediFind is an objective health platform that identifies experts based on real-world data. Dr. Kristen A. O'brien is classified as an Advanced expert for High Cholesterol, meaning they are among the top experts in the country for this condition. This ranking is based on their volume of patients, published research, and peer connections.

What conditions does Dr. Kristen A. O'brien specialize in?

While Dr. Kristen A. O'brien is a Family Medicine, they have specific expertise in High Cholesterol, Vitamin D Deficiency, and Infant Hyperglycemia. MediFind analyzes a doctor's articles and referral patterns to identify their specific areas of focus within Family Medicine.

Does Dr. Kristen A. O'brien participate in research or clinical trials?

Yes. Dr. Kristen A. O'brien has published 15 articles and abstracts on conditions like High Cholesterol. You can view a list of Dr. Kristen A. O'brien's latest peer-reviewed publications and clinical trial participation on their profile to see if they are active in new treatments.

Does Dr. Kristen A. O'brien accept my insurance?

Dr. Kristen A. O'brien accepts most major insurance plans, including Aetna and Anthem BCBS. We recommend calling the office directly at 631-331-1000 to verify that your specific plan is currently accepted before your visit.

Areas of Expertise

MediFind evaluates expertise by pulling from factors such as number of articles a doctor has published in medical journals, participation in clinical trials, speaking at industry conferences, prescribing and referral patterns, and strength of connections with other experts in their field.

Learn more about MediFind’s expert tiers

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