Dr. Karen Mrejen, MD
Internal Medicine*•Female•Age 57
Internal Medicine*
Dr. Karen Mrejen, MD is an internist in Bay Shore, NY and has over 25 years of experience in the medical field. Dr. Mrejen has extensive experience in Obstructive Lung Disease. She graduated from ALBANY MEDICAL COLLEGE in 1995. She is affiliated with medical facilities such as Glen Cove Hospital and Long Island Jewish Medical Center. She is accepting new patients.
Northwell Health Physician Partners Pulmonary and Sleep Medicine at Bay Shore
39 Brentwood Rd Ste 102 Bay Shore, NY 11706Accepting new patients
At a Glance
- Areas of ExpertiseDr. Mrejen specializes in the areas of Critical Care Medicine, Internal Medicine & Pulmonary Disease. • See board certifications
- Friendly Staff
- Practices at Top Hospital
- Hospital Satisfaction
Experience Check
Search for experience in a specific area
Insurance Check
Search for your insurance carrier and choose your plan type
Dr. Mrejen's Reviews
Likelihood to recommend Dr. Mrejen
3.7
| 5 Star | 67% | 67% |
| 4 Star | 0% | 0% |
| 3 Star | 0% | 0% |
| 2 Star | 0% | 0% |
| 1 Star | 33% | 33% |
Leave a review
How was your experience with Dr. Mrejen?Is this your profile?
Respond to reviews, add information, and reach more patients. Claiming is free and only takes a minute.
Claim your profileOverall Patient Satisfaction
Likelihood of recommending Dr. Mrejen to family and friends is 3.6666667 out of 5
About Me
biography
Dr. Karen Mrejen, MD is an internist in Bay Shore, NY and has over 25 years of experience in the medical field. Dr. Mrejen has extensive experience in Obstructive Lung Disease. She graduated from ALBANY MEDICAL COLLEGE in 1995. She is affiliated...read moreInternal Medicine
Pulmonary Disease
Critical Care Medicine
*Healthgrades does not verify qualifications for medical specialties. Please verify your provider's specialty and qualifications directly with your provider and applicable medical board.
Albany Medical College
Medical School, 1995
Healthgrades receives board action history for physicians and physician assistants. The information displayed here is sourced from independent information providers, such as state board websites, and may not be the most up-to-date information. Healthgrades makes no representations with respect to the accuracy of any information provided here and assumes no responsibility or liability for such information.
Learn more about medical license public record checkEnglish
French
Online Care for Prescription Refills (Sponsored)
Locations
Northwell Health Physician Partners Pulmonary and Sleep Medicine at Bay Shore
Northwell Health
Northwell Health
Affiliated Hospitals
- View all patient feedback
How patients felt about the care they received at this hospital.
87%Patients said they were given information about recovering at home3% higher than the national average
81%Patients said that doctors always listened to them and explained things well5% higher than the national average
- Recipient of 19
hospital awardsPatient Safety Excellence Award™ (2024, 2023)
Top in the nation for providing excellence in patient safety by preventing infections, medical errors, and other preventable complications
View all awardsOutstanding Patient Experience Award™ (2022)
Top in the nation for providing excellence in patient safety by preventing infections, medical errors, and other preventable complications
View all patient feedbackHow patients felt about the care they received at this hospital.
83%Patients said they were given information about recovering at home1% lower than the national average
73%Patients said that doctors always listened to them and explained things well3% lower than the national average
- Recipient of 14
hospital awardsView all awardsPatient Safety Excellence Award™ (2025, 2024)
Top in the nation for providing excellence in patient safety by preventing infections, medical errors, and other preventable complications
View all patient feedbackHow patients felt about the care they received at this hospital.
83%Patients said they were given information about recovering at home1% lower than the national average
75%Patients said that doctors always listened to them and explained things well1% lower than the national average
Compare Providers
Providers shown based on Dr. Mrejen's location and specialty. Show more Internal Medicine Doctors.
Your trust is our top concern. Learn more.
We monitor all reviews to ensure they comply with our guidelines and don’t include personal information, profanity, libel, defamation, harassment, obscenity or fraud.
All reviews are confirmed and audited before publication, and community members have the ability to flag inappropriate content for further review by our team.
Doctors can not pay for good reviews, nor can they pay to have negative reviews removed.
Any reviews that are deemed fraudulent or violate our guidelines will be removed immediately.