See All Internal Medicine Doctors in Newark, DE
Dr. John O'Neill Jr, DO Icon-share Share Profile
icon-circle-check
Link Copied!
Profile link copied to clipboard!

Dr. John O'Neill Jr, DO

Internal Medicine*
5.0 (12)
Map Pin Small Newark, DE
Call for new patient details
38 years of experience

Overview of Dr. John O'Neill Jr, DO

Dr. John O'Neill Jr, DO is an Internal Medicine Specialist in Newark, DE. They specialize in Internal Medicine, has 38 years of experience, and is board certified in Internal Medicine. They graduated from University of North Texas Health Science Center at Fort Worth and is affiliated with Christiana Hospital. Patients rated Dr. O'Neill Jr an average 5.0 star rating.

Dr. O'Neill Jr works at Practice in Newark, DE with other offices in Wilmington, DE. Please call ahead to schedule an appointment and to confirm all accepted insurance plans.

Advertisement
Compare with other Internal Medicine Specialists
Compare Dr. O'Neill Jr with Internal Medicine Specialists near you

Dr. O'Neill Jr's Office Locations

  1. 1
    Christianacare
    4755 Ogletown Stanton Rd, Newark, DE 19718 Icon Directions Right Arrow Directions Phone Icon (302) 623-0188
  2. 2
    Christiana Care Health Services Inc
    501 W 14th St, Wilmington, DE 19801 Icon Directions Right Arrow Directions Phone Icon (302) 623-3850
  3. 3
    Cchi Family Medicine
    200 Hygeia Dr Ste 2300, Newark, DE 19713 Icon Directions Right Arrow Directions Phone Icon (302) 623-0188

Hospital Affiliations
Admitting Hospitals

Admitting hospitals are where the provider is credentialed to see patients, perform procedures, and send patients for continuous care.

  • Christiana Hospital

Experience & Treatment Frequency

NEW FEATURE

What is treatment frequency?

Our treatment frequency feature helps you understand howoften a provider performs or treats a specificprocedure/condition compared to other doctors. Providersrank in one of four frequency categories:

Very HighFrequency
HighFrequency
NormalFrequency
May Perform

Specific procedures/conditions that don’t haveenough data are indicated with “May Perform”. We encourageyou to contact the provider with questions about theirexperience.

Search for conditions or procedures.
Asphyxia and Hypoxemia
Arterial Blood Gas Test (ABG)
Dehydration

Treatment frequency



Many providers have expertise treating multiple conditions or procedures. FindCare uses a variety of data sources to determine which conditions or procedures a provider treats and their level of experience.
Asphyxia and Hypoxemia
Arterial Blood Gas Test (ABG)
Dehydration
Constipation
Fever
  • View other providers who treat Fever
Foot Infection
Joint Pain
Limb Pain
Nausea
  • View other providers who treat Nausea
Rhabdomyolysis
Shortness of Breath
Tobacco Use Disorder
Urinary Tract Infection (UTI)
Electrocardiogram (EKG)
Immunization Administration
Abdominal Pain
Acidosis
  • View other providers who treat Acidosis
Acne
  • View other providers who treat Acne
Acute Bronchitis
Acute Deep Vein Thrombosis (DVT)
Acute Kidney Infection
Acute Pharyngitis
Acute Sinusitis
Acute Upper Respiratory Infection
Acute Venous Embolism Thrombosis
ADHD and-or ADD
Administrative Physical
Adult Failure to Thrive
Alkalosis
All Headaches (incl. Migraine)
All Types of Food Poisoning
Allergic Conjunctivitis
Allergic Rhinitis
Anal or Rectal Pain
Anemia
  • View other providers who treat Anemia
Animal Allergies
Ankle Sprains and Strains
Anxiety
  • View other providers who treat Anxiety
Arthritis
Arthritis of the Elbow
Asthma
  • View other providers who treat Asthma
Asymptomatic Post-Menopausal Status
Ataxia
  • View other providers who treat Ataxia
Atherosclerosis
Athlete's Foot
Atopic Dermatitis (Eczema)
Atrophic Vaginitis
Back Pain
Balanoposthitis
Bedsores
  • View other providers who treat Bedsores
Benign Chronic Pain Syndrome
Bird Flu
  • View other providers who treat Bird Flu
Bladder Atony
Bladder Infection
Blood in Urine (Hematuria)
Breast Pain
Bronchiectasis
Bronchitis
Bronchospasm
Bruise of Face, Scalp, or Neck
Bursitis
  • View other providers who treat Bursitis
Cachexia
  • View other providers who treat Cachexia
Calcium Metabolism Disorders
Candidiasis of Skin and Nails
Carpal Tunnel Syndrome
Celiac Disease
Cellulitis
Chest Pain
Chest Wall Pain Syndrome
Chlamydia Infections
Chronic Deep Vein Thrombosis (DVT)
Chronic Depression (Dysthymia)
Chronic Fatigue Syndrome
Chronic Interstitial Cystitis
Chronic Neck Pain
Chronic Pain
Chronic Sinusitis
Chronic Venous Embolism Thrombosis
Coccygeal Pain
Cold Sore
Common Cold
Contact Dermatitis
COPD (Chronic Obstructive Pulmonary Disease)
Cough
  • View other providers who treat Cough
Cystic Fibrosis
Deep Vein Thrombosis (DVT)
Dermatitis Due to Drugs
Dermatitis Due to Substances Taken Internally
Diabetes Type 1
Diabetes Type 2
Diabetes With Renal Manifestations
Diabetic Polyneuropathy
Diarrhea
  • View other providers who treat Diarrhea
Difficulty With Walking
Dizziness
Dry Skin
  • View other providers who treat Dry Skin
Dysentery
Dyslipidemia
Dysphagia
Earwax Buildup
Eczema and Contact Dermatitis
Emphysema
Enlarged Prostate (BPH)
Enteritis
Esophagitis
Essential Tremor
Fibromyalgia
Folic Acid Deficiency
Food Poisoning
Foot Sprain
Fungal Nail Infection
Gait Abnormality
Gas-Bloat Syndrome
Gastritis
Gastroesophageal Reflux Disease (GERD)
Gastroparesis
Gastroptosis
Gout
  • View other providers who treat Gout
Headache
  • View other providers who treat Headache
Heart Disease
Heart Palpitations
Heartburn
Hemorrhoids
Hernia
  • View other providers who treat Hernia
Herpes Simplex Infection
Herpes Zoster Without Complication
Hip Pointer
Hives
  • View other providers who treat Hives
Human Immunodeficiency Virus (HIV)
Hypercalcemia
Hyperkalemia
Hyperlipidemia
Hypertension
Hypoglycemia
Hypogonadism
Hypokalemia
Hypotension
Hypotension (Excluding Maternal)
Hypothyroidism
Impetigo
  • View other providers who treat Impetigo
Indigestion
Influenza (Flu)
Insomnia
  • View other providers who treat Insomnia
Intertrigo
Intestinal Diverticulitis
Intestinal Diverticulosis
Iodine Deficiency
Iron Metabolism Disorders
Irritable Bowel Syndrome
Itchy Skin
Kidney Infection
Lactose Intolerance
Lateral and Medial Epicondylitis (Tennis and Golf Elbow)
Leg and Foot Ulcers
Limb Swelling Caused by Fluid Overload
Lipid Disorders
Liver Damage from Alcohol
Loss of Taste
Low Back Pain
Low Blood Oxygen Level
Lyme Disease
Magnesium Metabolism Disorders
Malaise and Fatigue
Malnutrition
Menopausal and Postmenopausal Disorders
Menstrual Disorders
Migraine
  • View other providers who treat Migraine
Mineral Metabolism Disorders
Moles (Benign Skin Lesions)
Mood Disorders (Dysthymia and Cyclothymia)
Muscle Cramping
Muscle Spasm
Muscle Weakness
Nail and Nail Bed Infection
Nail Infection
Nasopharyngitis
Neck Muscle Strain
Neurogenic Bladder
Noninfectious Gastroenteritis and Colitis
Nosebleed
Obesity
  • View other providers who treat Obesity
Osteoarthritis
Osteoarthritis of Foot
Osteoarthritis of Hand
Osteoarthritis of Hand or Wrist
Osteoarthritis of Hip
Osteoarthritis of Hip and Thigh
Osteoarthritis of Knee
Osteoarthritis of Shoulder
Osteoarthritis of Spine
Osteopenia
Osteoporosis
Otitis Media
Outer Ear Infection
Overactive Bladder
Overweight
Painful Urination (Dysuria)
Patellofemoral Pain Syndrome (PFPS)
Pericardial Disease
Peripheral Nerve Disorders
Pharyngitis
Phlebitis and Thrombophlebitis
Phosphorus Metabolism Disorders
Pinkeye (Conjunctivitis)
Pneumonia
Pollen Allergy
Polymyalgia Rheumatica (PMR)
Polymyositis
Polyneuropathy
Polyuria
  • View other providers who treat Polyuria
Postherpetic Neuralgia
Prostatitis
Proteinuria
Purpura
  • View other providers who treat Purpura
Radiculopathy
Rash
  • View other providers who treat Rash
Raynaud's Disease
Reflux Esophagitis
Restless Leg Syndrome
Ringworm
  • View other providers who treat Ringworm
Salivary Gland Stones and Inflammation
Sarcoidosis
Scabies
  • View other providers who treat Scabies
Sciatica (Not Due to Disc Displacement)
Seborrheic Dermatitis
Secondary Diabetes Mellitus
Secondary Hypertension
Secondary Renovascular Hypertension
Sexually Transmitted Diseases (STDs)
Shingles
  • View other providers who treat Shingles
Sickle Cell Disease
Sinus Bradycardia
Sinus Tachycardia
Sinusitis
Sleep Apnea
Sprains and Strains (incl. Muscle Tear)
Strep Throat
Stye
  • View other providers who treat Stye
Swine Flu
Syphilis Infections
Testicular Dysfunction
Thrush
  • View other providers who treat Thrush
Thyroid Goiter
Tinnitus
  • View other providers who treat Tinnitus
Transient Ischemic Attack (TIA)
Tremor
  • View other providers who treat Tremor
Trichomoniasis
Trigeminal Neuralgia
Urinary Hesitancy
Urinary Incontinence
Urinary Stones
Vaginitis or Vaginosis
Valley Fever
Varicose Eczema
Venous Compression
Venous Embolism and Thrombosis
Venous Insufficiency
Vertigo
  • View other providers who treat Vertigo
Viral Enteritis
Viral Hepatitis
Viral Infection
Vitamin B Deficiency
Vitamin B12 Deficiency
Vitamin D Deficiency
Vitamin K Deficiency
Wheezing
  • View other providers who treat Wheezing
Yeast Infections
Abscess or Cyst Drainage or Aspiration
Abscess or Fluid Incision and Drainage
Check your insurance
    Close Icon
    Please double-check when making an appointment.

    View All Accepted Carriers

    • Aetna
    • Amerihealth
    • Capital Blue Cross
    • Cigna
    • MVP Health Care
    • UnitedHealthCare

    * Please verify this information when scheduling an appointment.

    Ratings & Reviews
    Reviews are displayed in date order and collected from patients who have agreed to reporting accurate and fair reviews. Providers with no reviews may have a new FindCare profile, or no submitted reviews on FindCare yet.

    Learn more about how FindCare's ratings and reviews work

    5.0
    Average provider rating
    Based on 12 ratings
    Patient Ratings (12)
    5 Star
    (12)
    4 Star
    (0)
    3 Star
    (0)
    2 Star
    (0)
    1 Star
    (0)
    Leave a review

    How was your appointment with Dr. O'Neill Jr?

    Read more reviews on Healthgrades
    Photo: Dr. John O'Neill Jr, DO
    How would you rate your experience with Dr. John O'Neill Jr, DO?
    • Likelihood of recommending Dr. O'Neill Jr to family and friends

    Dr. O'Neill Jr's Office & Staff

    • Ease of scheduling urgent appointments
    • Office environment, cleanliness, comfort, etc.
    • Staff friendliness and courteousness
    • Total wait time (waiting & exam rooms)

    Experience with Dr. O'Neill Jr

    • Level of trust in provider's decisions
    • How well provider explains medical condition(s)
    • How well provider listens and answers questions
    • Hpends appropriate amount of time with patients

    Tell Us About Yourself

    • Your gender:
    • Your age group:
    • Number of office visits you've had in the last 2 years:

    Finish Here

    • How would you like to confirm your survey information?
      Standard text messaging and data rates may apply.
    Thank you for sharing your feedback about Dr. John O'Neill Jr, DO.

    About Dr. John O'Neill Jr, DO

    Specialties*
    • Internal Medicine

    • *Healthline does not verify qualifications for medical specialties. Please verify your provider's specialty and qualifications directly with your provider and applicable medical board.
    Specialties*
    Years of Experience
    • 38 years of experience
    Years of Experience
    Years of experience represents how long a provider has been practicing in their field since graduating from medical school. Not all providers will have this information available.

    Languages Spoken
    • English
    Languages Spoken
    NPI Number
    • 1265445233
    NPI Number
    A National Provider Identifier (NPI) is a unique 10-digit identifier issued by the government to healthcare providers.

    Education & Certifications

    Medical Education
    • University of North Texas Health Science Center at Fort Worth
    Medical Education
    Board Certifications
    • Internal Medicine
    Board Certifications
    What’s a board certification and why is it important that my provider has one?

    A board certification represents a provider’s dedication to ongoing training in one or more specialties, including the completion of intensive exams. While not all specialties have board certifications, if your provider does have one they’ve taken the extra step to master their specialty and to keep up with the latest advancements in their field.

    Frequently Asked Questions

    Dr. O'Neill Jr has indicated that they do offer telehealth services. Please call the provider’s office at for more information.

    12 patients have reviewed Dr. O'Neill Jr. The overall rating for this provider is 5.0. You can read verified reviews and ratings and leave your own review based on your experience with Dr. O'Neill Jr.

    Whether a person prefers to schedule an appointment online or over the phone with Dr. O'Neill Jr, there are benefits to both methods. A person calling to schedule an with Dr. O'Neill Jr appointment can ask questions about the practice, provider availability, conditions treated, procedures performed, and if their insurance carrier is accepted. While online scheduling is quicker, easier, allows one to view a wide range of appointment times, and may provide the ability to sync with a personal calendar.

    Are you Dr. John O'Neill Jr, DO?

    Claim your profile through Healthgrades to keep it updated and reach more patients.

    It’s free and only takes a minute.

    CLAIM MY PROFILE

    Search

    Primary Care
    Close Icon