Dr. Marlyn Fernandez, MD

Dr. Marlyn Fernandez, MD

Endocrinology, Diabetes & Metabolism  |  
Female  |  
35 y/o

Accepting new patients

Dr. Marlyn Fernandez, MD is an endocrinology, diabetes & metabolism doctor who practices in Paramus, NJ. She is 35 years old and has been practicing for 11 years. Dr. Fernandez is affiliated with Hackensack University Medical Center.

Forest Healthcare Associates

277 Forest Ave Ste 200

Paramus, NJ 07652
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Accepted insurance

  • Aetna
  • Amerihealth
  • Bankers Life and Casualty
  • Beech Street (Multiplan)
  • Blue Cross Blue Shield
  • Devon Health
  • EmblemHealth
  • Empire Blue Cross Blue Shield
  • First Health (Coventry Health Care)
  • Humana
  • MagnaCare
  • Medicare
  • One Health
  • Oxford Health Plans

Learn about Dr. Fernandez

Be confident in your decisions by checking out your provider's top areas of care, education, patient reviews and more. Learn about finding the right doctor for you

Top Care Areas


See how frequently Dr. Fernandez performs your care needs compared to other doctors.

Calcium Metabolism Disorders
very high
more than 92% of peers
Diabetes With Renal Manifestations
more than 82% of peers
more than 81% of peers

Dr. Fernandez's percentages are based on the rate of treatment compared to peers nationwide from insurance data. Learn more info about our data and this Top Care Areas component.

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Care Philosophy

This content was provided by Dr. Fernandez "Endocrine diseases and conditions can seriously affect my patients' quality of life if not accurately diagnosed and kept under control. Diabetes is a perfect example. I work to make sure my patients understand the importance of tight glucose control through accurate medication dosing, good nutrition, and effective exercise. Treating diabetes takes a team approach and I want my patients know I'm on their team.



Read More


  • Endocrinology, Diabetes & Metabolism
  • Internal Medicine

Board Certifications

  • Diabetes, Metabolism & Endocrinology
    Accredited by: American Board of Internal Medicine*
  • Internal Medicine
    Accredited by: American Board of Internal Medicine*

Conditions Treated

  • Abnormal Thyroid
  • Adrenal Insufficiency
  • Anemia
  • Anxiety
  • Arthritis
  • Asthma
  • COPD (Chronic Obstructive Pulmonary Disease)
  • Calcium Metabolism Disorders
  • Congestive Heart Failure
  • Coronary Artery Disease (CAD)
  • Depression
  • Diabetes
  • Diabetes Mellitus, Secondary
  • Diabetes Type 1
  • Diabetes Type 2
  • Diabetes With Renal Manifestations
  • Diabetic Ketoacidosis
  • Emphysema
  • Female Infertility
  • Goiter
  • Graves' Disease
  • Growth Hormone Deficiency
  • Hashimoto's Disease
  • Heart Attack (Acute Myocardial Infarction)
  • Heart Disease
  • High Cholesterol
  • Hypercalcemia
  • Hyperlipidemia
  • Hypertension
  • Hyperthyroidism
  • Hypoparathyroidism
  • Hyposmolality and Hyponatremia
  • Hypothyroidism
  • Injuries
  • Kidney Disease
  • Lipid Disorders
  • Menstrual Disorders (incl. Dysmenorrhea)
  • Obesity
  • Osteopenia
  • Osteoporosis
  • Overweight
  • Parathyroid (Gland) Tumor: Other than Malignant
  • Sleep Apnea
  • Syncope
  • Testicular Dysfunction
  • Thyroid Cancer
  • Thyroid Cyst
  • Thyroiditis
  • Vitamin D Deficiency


Read More


  • Allergy Treatment
  • Biopsy
  • Bone Density Scan
  • Breath Testing
  • Cardiac Catheterization (incl. Coronary Angiography)
  • Cardiac Imaging
  • Cardiac Myocardial Perfusion Imaging
  • Echocardiography
  • Electrocardiogram (EKG)
  • Immunization
  • Joint Injection
  • Pap Smear
  • Physical Examination
  • Radiofrequency Ablation
  • Spirometry
  • Thoracentesis
  • Urinalysis
  • Vaccination

Background Check

0 Malpractice Claims

No malpractice history found for New Jersey.

0 Sanctions

No sanctions history found for the years that Healthgrades collects data.

0 Board Actions

No board actions found for the years that Healthgrades collects data.


  • Instituto Tecnologico De Santo Domingo
    Medical School | Graduated 2006
  • Umdnj-New Jersey Medical School
    Internship Hospital | Completed 2010
  • Umdnj-New Jersey Medical School
    Residency Hospital | Completed 2012
  • Rutgers New Jersey Medical School
    Fellowship Hospital | Completed 2014

Awards & Recognition

Awards & Honors
  • Healthgrades Honor Roll
Media & Publications

Dr. Fernandez has no media or publications listed.

Languages Spoken

  • English
  • Portuguese
  • Spanish

Memberships & Professional Affiliations

Dr. Fernandez does not have any memberships or affiliations listed. If you are Dr. Fernandez and would like to add memberships or affiliations, please update your profile.

Dr. Fernandez's Reviews

Likelihood of recommending Dr. Fernandez to family and friends
based on 33 total reviews (15 with comments)
Dr. Fernandez's Performance
  • Trustworthiness
  • Explains condition(s) well
  • Answers Questions
  • Time well spent
Office & Staff Performance
  • Scheduling
  • Office environment
  • Staff friendliness
  • Average wait time
    10 to 15 minutes
Patient Comments (15)
Toms River, NJ |
waste of time, money and worse my well being...would never risk my life nor anyone I loved with her
Teaneck, NJ |
She is one of the best doctors out there. She is very knowledgeable in her specialty and will give you the care you needed. She listens to your concerns and will lesson your anxiety when it comes to your Dx.
in Garfield, NJ |
Outstanding physician. Knowledgeable, up-to-date, and sincere care for patients.
New York, NY |
Went in for ultrasound for hyper parathyroid. Found suspicious nods on thyroid. scheduled biopsy almost 3 weeks later. had numerous questions after ultrasound and digesting info. placed three phone calls over two weeks. NO CALL BACK. finally she called back. no apologies other than too busy. Felt very dismissed and the phone call was completely argumentative. Picking up records and finding new compassionate and caring Dr
in Stony Point, NY |
Appointments with Dr. Fernandez are an uplifting experience, she is a caring, conscientious and friendly physician. She has been a great help to me during some difficult times and her care program has resulted in the stabilization of my endocrinology disorders.
in RidgefeildPark N J |
I like Dr. Fernandez she's very smart I feel comfortable with her. The thing I like she explains your condition to you not at you she's a very important part of my medical team helping me with my Diabetes. She's helping me navigate through my changing condition of my Diabetes. ??
Atlanta, GA |
I'm no recomed she not help no body
Edgewater, NJ |
Dr. Fernandez is obviously intelligent and knowledgeable. But I found our interactions to be unpleasant at worst & disconnected at best. She seemed more interested in her notes than in me, interrupted me often, & was almost 'military' in style. I never quite sensed she saw me as a human but more as numbers or a file. She'd do well to connect more deeply with patients. She didn't like my feedback & so had her nurse tell me to find another doctor. To me, that's not a doctor who cares about me. :(
in Kissimmee, FL |
Excellent Dr and work she has done for my Diabetis.
in Hackensack, NJ |
I highly recommend Dr. Fernandez. I have been seeing her now for the past seven years and she has an excellent bedside manner. She takes her time with you I never feel rushed, she explains things to great detail, and listens to what I have to say. Excellent doctor and always punctual
in New Jersey |
Dr Fernandez is a professional lady who is on top of the most current treatments in the field of diabetes. She works with you to ensure that your prescriptions are easily filled, refilled, and within your budget. She has a very nice demeanor and is deeply involved in providing her patients with the best medical care available. Personally, I am very satisfied and comfortable to have her as my endocrinologist. Thank you Dr Fernandez!
in Hackensack, NJ |
Talked over me entire visit. Said I didn't need the meds another Dr. prescribed. Refused to listen to me. No test results, meant no meds for 3 wks. Looked at my thyroid and said OMG!!!! I said what's the matter? I asked again if something was wrong. She said well it's not good. Then proceeded to tell me how people with Hashimotos get thyroid cancer. Scared me to death. Then screamed at me on phone. PS: Sonogram confirmed NO cancer. Worst Dr. I ever seen!!!!!!!!!!
Hillsdale, NJ |
One of the worst experiences I have ever had with a doctor's office. Will never be going back. This woman should not even have her license.
in Mahwah, NJ |
Dr. Fernandez is a caring , intelligent Doctor who saved my life.
Lake Hopatcong, NJ |
Did not take the time to answer all my questions. Instead of calling me to discuss why she wanted me to change a dosage of medication just had an assistant call me who could not explain why the dosage change was necessary or appropriate.
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Now Accepting New Patients
Dr. Fernandez accepts 18 insurance carriers
  • Aetna
  • Amerihealth
  • Bankers Life and Casualty
  • Beech Street (Multiplan)
  • Blue Cross Blue Shield
  • Devon Health
  • EmblemHealth
    Emblem Health
  • Empire Blue Cross Blue Shield
  • First Health (Coventry Health Care)
  • Humana
  • MagnaCare
  • Medicare
    Special Needs Plan SNP
  • One Health
  • Oxford Health Plans
  • PHCS
  • QualCare
  • Tricare
    TriCare for Life
  • UnitedHealthCare
    United Healthcare

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Hospitals where Dr. Fernandez has admitting privileges

Hackensack University Medical Center
30 Prospect Ave
Hackensack, NJ 07601
View Hospital Profile