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Dr. John Kollar, DO

General Surgery*
4.8 (18)
Map Pin Small Saddle Brook, NJ
Accepting new patients
37 years of experience

Overview of Dr. John Kollar, DO

Dr. John Kollar, DO is a General Surgery Specialist in Saddle Brook, NJ. They specialize in General Surgery, has 37 years of experience, and is board certified in General Surgery. They graduated from Rutgers New Jersey Medical School and is affiliated with The Valley Hospital, Chilton Medical Center and Bergen New Bridge Medical Center. Dr. Kollar, completed a residency at Kennedy Memorial Hospital. Patients rated Dr. Kollar an average 4.8 star rating.

Dr. Kollar works at Practice in Saddle Brook, NJ with other offices in Paramus, NJ. They frequently treat conditions like Obesity along with other conditions at varying frequencies. They are accepting new patients and accept Aetna and UnitedHealthCare as well as other major insurance plans. Please call ahead to schedule an appointment and to confirm all accepted insurance plans.

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These providers are on the medical staff of Clara Maass Medical Center.

Dr. Kollar's Office Locations

  1. 1
    Office
    383 Market St Ste 4, Saddle Brook, NJ 07663 Icon Directions Right Arrow Directions Phone Icon (201) 712-7900
  2. 2
    Bergen New Bridge Medical Center
    230 E Ridgewood Ave, Paramus, NJ 07652 Icon Directions Right Arrow Directions Phone Icon (201) 967-4148
  3. 3
    Bergen New Bridge Medical Center Medical Provider Group
    230 E Ridgewood Ave, Paramus, NJ 07652 Icon Directions Right Arrow Directions Phone Icon (201) 967-4000

Hospital Affiliations
Admitting Hospitals

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

  • The Valley Hospital
  • Chilton Medical Center
  • Bergen New Bridge Medical Center

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.
Obesity
Bariatric Surgery (Weight Loss Surgery)
Sleeve Gastrectomy
Obesity
Bariatric Surgery (Weight Loss Surgery)
Sleeve Gastrectomy

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.
Obesity
  • View other providers who treat Obesity
Bariatric Surgery (Weight Loss Surgery)
Sleeve Gastrectomy
Abdominal Pain
Cholecystitis and Gallstones
Diaphragmatic and Hiatal Hernia
Gallstones
Hemorrhoids
Inguinal Hernia
Intestinal Obstruction
Umbilical Hernia
Cholecystectomy with Robotic Assist
Excision, Shaving, or Destruction of Skin and Subcutaneous Tissue (incl. Mohs Micrographic Surgery), Tissue Transfer
Gallbladder Removal
Laparoscopic Gallbladder Removal (Cholecystectomy)
Laparoscopic Inguinal Hernia Repair
Open Inguinal Hernia Repair
Umbilical Hernia Repair Open
Wound Repair
Acute Bowel Infarction
Anal and Rectal Cancer
Anal or Rectal Pain
Anorectal Abscess
Anorectal Fistula
Appendicitis
Ascites
  • View other providers who treat Ascites
Benign Mediastinal Tumor
Benign Neoplasm of the Digestive System
Bowel Strangulation
Breast Cancer
Breast Lump
Capsular Contracture of Breast Implant
Cholangiocarcinoma
Colorectal Cancer
Constipation
Crohn's Disease
Ductal Carcinoma in Situ
Esophageal Cancer
Gastric Ulcer
Gastroparesis
Gynecologic Cancer
Hiatal Hernia
Hiatal Hernia with Obstruction
Ileus
  • View other providers who treat Ileus
Incisional Hernia
Inflammatory Bowel Disease
Intestinal Abscess
Intestinal Fistula
Ischemic Colitis
Lipomas
  • View other providers who treat Lipomas
Liver Cancer
Lobular Carcinoma
Megacolon
Neoplasm of Gastrointestinal Tract
Obstructed Inguinal Hernia
Partial Lung Collapse
Pelvic Abscess
Peptic Ulcer
Peripheral Vascular Disease (PAD, PVD)
Pleural Effusion
Pyloric Stenosis
Ruptured Aortic Aneurysm
Secondary Malignancies
Stomach Cancer
Thyroid Cancer
Traumatic Brain Injury
Ulcerative Colitis
Varicose Veins
Vascular Insufficiency of Intestines
Ventral Hernia
Ventral Hernia with Gangrene
Vulvar Cancer
Abdominoplasty
Abscess or Cyst Drainage or Aspiration
Abscess or Fluid Incision and Drainage
Acid Reflux Surgery
Anal Fistulectomy or Fistulotomy
Axillary Lymph Node Dissection
Colectomy
Colostomy
Dressing and-or Debridement of Wound, Infection, or Burn
Duodenal Polypectomy
Endoscopy (Esophagus, Stomach, Small Intestine)
Enterostomy (Laparoscopic or Open)
Excision of Breast Tumor
Excision of Esophageal Lesion
Excision of Rectal Tumor
Excision of Stomach Tumor
Gallbladder Removal (Cholecystectomy)
Gastrectomy
Gastrectomy with Robotic Assist
Gastric Restrictive With Partial Gastrectomy or Jejunojejunostomy
Gastrotomy
Gynecomastia Repair
Hemorrhoidectomy or Excision of Anal Tags
Hernia Repair
Intestinal Transplant (incl. Enterectomy)
Laparoscopic Appendectomy
Laparoscopic Gastric Bypass Surgery
Laparoscopic Incisional Hernia Repair
Laparoscopic Revision Gastric Restrictive Procedure
Laparoscopic Umbilical or Ventral Hernia Repair
Laparotomy
Lumpectomy
Lymph Node Biopsy or Excision
Mastectomy
Non-Coronary Angioplasty, Atherectomy, and Stenting
Open Appendectomy
Open Diaphragmatic or Paraesophageal Hiatal Hernia Repair
Open Gastric Restrictive Procedure
Open Incisional or Ventral Hernia Repair
Paraesophageal Hernia Repair Robotic Assist
Paraesophageal Hernia Repair, Laparoscopic
Port Placements or Replacements
Puncture Aspiration
Removal or Destruction of Rectal or Intestinal Tumor (incl. Colonoscopy, Proctosigmoidoscopy, Sigmoidoscopy and Control of Hemorrhage)
Revision of Gastric Anastomosis or Restrictive Procedure
Soft Tissue Tumor Removal
Sphincterotomy
Thoracentesis
Tracheal Surgery
Ventral Hernia Repair Laparoscopic
Ventral Hernia Repair Open
Wedge Resection Colon
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    • Aetna
    • EmblemHealth
    • Medicare
    • Oscar Health
    • QualCare
    • 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

    4.8
    Average provider rating
    Based on 18 ratings
    Patient Ratings (18)
    5 Star
    (17)
    4 Star
    (0)
    3 Star
    (0)
    2 Star
    (0)
    1 Star
    (1)
    Leave a review

    How was your appointment with Dr. Kollar?

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    Photo: Dr. John Kollar, DO
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    • Likelihood of recommending Dr. Kollar to family and friends

    Dr. Kollar'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. Kollar

    • 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

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    About Dr. John Kollar, DO

    Specialties*
    • General Surgery

    • *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
    • 37 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
    • 1841227352
    NPI Number
    A National Provider Identifier (NPI) is a unique 10-digit identifier issued by the government to healthcare providers.

    Education & Certifications

    Residency
    • Kennedy Memorial Hospital
    Residency
    Internship
    • Saddle Brook General Hospital
    Internship
    Medical Education
    • Rutgers New Jersey Medical School
    Medical Education
    Undergraduate School
    • Rutgers College
    Undergraduate School
    Board Certifications
    • General Surgery
    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. John Kollar, DO is accepting new patients on Healthline FindCare. You can check to see if Dr. Kollar is offering online scheduling or call the provider’s office for more information.

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

    Dr. Kollar has seen patients for Obesity, and more. You can see other conditions treated by Dr. Kollar on their profile. Please call the provider’s office to confirm all visit reasons.

    18 patients have reviewed Dr. Kollar. The overall rating for this provider is 4.8. You can read verified reviews and ratings and leave your own review based on your experience with Dr. Kollar.

    Whether a person prefers to schedule an appointment online or over the phone with Dr. Kollar, there are benefits to both methods. A person calling to schedule an with Dr. Kollar 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.

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