Dr. Dayaparan Nadarajah, MD
New Patients

Dr. Dayaparan Nadarajah, MD


Internal Medicine | Male


Dr. Dayaparan Nadarajah, MD is an internal medicine doctor who practices in Hackettstown, NJ. He is 59 years old and has been practicing for 35 years. Dr. Nadarajah is affiliated with Newton Medical Center and Hackettstown Regional Medical Center.

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Dr. Nadarajah's Experience

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    Visiting Dr. Nadarajah

    Dr. Nadarajah accepts 30 insurance carriers

    Affiliated Hospitals

    Hospital Quality
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    Dr. Nadarajah's Reviews

    Likelihood of recommending Dr. Nadarajah to family and friends
    based on 15 total surveys (4 with reviews)
    Dr. Nadarajah's Performance
    • Trustworthiness
    • Explains condition(s) well
    • Answers Questions
    • Time well spent
    Office & Staff Performance
    • Scheduling
    • Office environment
    • Staff friendliness
    • Average wait time
      16 to 30 minutes
    Patient Reviews (4)
    Montague, NJ |
    By far the worst I have ever come across. Find a Dr that actually cares just a little because it is not this guy.
    in Hackettstown, NJ |
    Dr. Nadarajah is a caring doctor. However, he leaves a lot of the processing to his staff (PA) and spends a lot of time fiddling with his phone while he's with you. I have been complaining about certain symptoms that I now know are related to my situation. He is quick to order tests and send you to other doctors. He does not dig deep enough to understand related conditions that should be under his specialty. Nice guy, but not competent. This may be due to being too busy or complacent.
    Andover nj |
    This terrible doctor left me in pain for months with a shoulder injury after 4 months of agonizing pain he finally referred me to an orthopedic surgeon. Doctor won't even answer simple questions about the condition I had. His staff and reception crew are nasty and barely anyone calls back! This man shouldn't be treating live patients zero bedside manner and only cares about covering his butt.
    in Ipswich, MA |
    I would not recommend this doctor because he does not provide the family and patient with information necessary to make decisions needed for long term care. He uses new medications for treatment, like Xeralto and Stiolto, despite these drugs harmful side effects.
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    Dr. Nadarajah's experience matches your search based on the following criteria:

    •  Based on total number of patients treated over the last 12 months
    •  Specializes in Internal Medicine
    •  Board certified in Critical Care Medicine, Internal Medicine and Pulmonary Disease
    •  No malpractice claims found
    •  No sanctions found
    •  No board actions found

    Awards & Recognition

    • Awards & Honors
      • Healthgrades Honor Roll
      What is a recognized doctor
    • Media & Publications

      Dr. Nadarajah has no media or publications listed.

    Background Check

    • 0
      Malpractice Claims

      No malpractice history found for New Jersey.

      What is medical malpractice
    • 0

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

      What is a sanction or disciplinary action
    • 0
      Board Actions

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

      What are board actions

    Board Certifications

    Why It Matters: Dr. Nadarajah's Board Certifications

    Board certification should be one of your top considerations when choosing a doctor. Board certification is an official recognition given to doctors who have met specific requirements set by national medical specialty boards in the... More

    • Critical Care Medicine
    • Internal Medicine
    • Pulmonary Disease

    Conditions Treated

    • Abscess
    • Acidosis
    • Acute Bronchitis
    • Acute Lower Respiratory Infection
    • Acute Pharyngitis
    • Acute Upper Respiratory Infection
    • Alkalosis
    • Asbestosis
    • Asthma
    • Autoimmune Diseases
    • Bronchiectasis
    • Bronchiolitis
    • Bronchitis
    • COPD (Chronic Obstructive Pulmonary Disease)
    • Chronic Pulmonary Heart Diseases (incl. Pulmonary Hypertension)
    • Collapsed Lung (Pneumothorax)
    • Cough
    • Emphysema
    • Empyema
    • Fungal Infections
    • Influenza (Flu)
    • Interstitial Lung Disease
    • Low Blood Oxygen Level
    • Lung Cancer
    • Lung Neoplasms, Not Specified as Malignant
    • Lung Nodule
    • Metastatic Respiratory System Cancer
    • Partial Lung Collapse
    • Pleural Effusion
    • Pneumoconiosis and Pneumonopathy
    • Pneumonia
    • Pneumonitis (Due to Solids or Liquids)
    • Primary Pulmonary Hypertension
    • Pulmonary Disease
    • Pulmonary Edema
    • Pulmonary Embolism
    • Pulmonary Hypertension
    • Pulmonary Insufficiency
    • Respiratory Failure
    • Respiratory Syncytial Virus
    • Sarcoidosis
    • Shortness of Breath
    • Sinusitis
    • Sleep Apnea
    • Sleep Disorders
    • Swine Flu
    • Systemic Sclerosis
    • Thrombosis
    • Tuberculosis
    • Vascular Disease
    • Viral Infection
    • Wegener's Granulomatosis


    • Medical School
      Kings College School Of Medicine and Dentistry / University Of London Facility Of Medicine

      Graduated in 1982

    • Internship Hospital
      Charing Cross Hosp

      Completed in 1983

    • Residency Hospital
      Umdnj-University Hospital

      Completed in 1987

    • Fellowship Hospital
      Albert Einstein Coll Med

      Completed in 1989

    Languages Spoken

    • English

    Memberships &
    Professional Affiliations

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


    • Internal Medicine

    Procedures Performed

    • Abscess or Fluid Incision and Drainage
    • Arterial Blood Gas Test (ABG)
    • Bronchoscopy
    • Continuous Positive Airway Pressure (CPAP)
    • Incision and Removal of Foreign Object
    • Pulmonary Function Test
    • Respiratory Management
    • Thoracentesis