31 Years of Experience
Accepting patients
Affiliated with a Castle Connolly Top Hospital
Who is Dr. Kolnik, Gastroenterologist in Haddon Heights, NJ?
Dr. John Kolnik, DO is a Gastroenterologist, who primarily practices in Haddon Heights, NJ with 2 additional practice locations. He has been practicing for over 31 years and is board certified. Dr. Kolnik graduated from Pennsylvania State Univ College of Medicine and completed his residency at UMDNJ. Dr. Kolnik is fluent in English, and is currently seeing new patients. Dr. Kolnik’s practice accepts Cigna, Medicaid, Medicare, UnitedHealthcare and other major insurance plans. To book an appointment or to confirm insurance options, please call Dr. Kolnik’s office.
Where did Dr. Kolnik go to medical school and complete their residency?
Residency: UMDNJ
Medical School: Pennsylvania State Univ College of Medicine
What languages does Dr. Kolnik speak?
Dr. Kolnik and their clinical team can communicate with patients in the following languages:
English
What conditions does Dr. Kolnik treat?
As a Gastroenterologist, Dr. Kolnik diagnoses, treats, and manages a wide range of conditions. This condition information is derived from anonymized insurance claims and highlights the medical conditions most commonly treated by Dr. Kolnik. It provides insight into the doctor’s areas of experience and expertise based on real-world patient encounters from the past two years, updated quarterly.
Also known as:
- Colon Cancer Screening
- Health Screening
- Colorectal Cancer Screening (PDQ®)
- Screening Tests to Detect Colorectal Cancer and Polyps
- Tests to Detect Colorectal Cancer and Polyps
- Colorectal Cancer Screening
- Colonoscopy Screening
- Bowel Cancer Screening
ICD-10 Codes:
- Z1211: Encounter for screening for malignant neoplasm of colon
Also known as:
- Acid Reflux
- GERD with Esophagitis
- GERD
- Acid Reflux (GER & GERD) in Adults
- Acid Reflux (GER & GERD) in Children
- Acid Reflux (GER & GERD) in Infants
- Eosinophilic Esophagitis
- Gastroesophageal Reflux
- Heartburn
- Indigestion
- Reflux Esophagitis
- Acid Reflux Esophagus Inflammation
- Heartburn with Esophagus Damage
ICD-10 Codes:
- K219: Gastro-esophageal reflux disease without esophagitis
- K2100: Gastro-esophageal reflux disease with esophagitis, without bleeding
Also known as:
- Colon Polyps
- Colonic Polyps
- Colorectal Polyps
- Intestinal Polyps
- Bowel Polyps
ICD-10 Codes:
- Z86010: Personal history of colon polyps
Also known as:
- Family History of Digestive Organ Cancer
- Cancer
- Family History
- Genetic risk for gastrointestinal cancer
- Family history of GI cancer
- Hereditary digestive cancer
ICD-10 Codes:
- Z800: Family history of malignant neoplasm of digestive organs
Also known as:
- Chronic Stomach Inflammation
- Stomach Disorder
- Gastritis & Gastropathy
- Chronic gastritis
- Long-term stomach inflammation
- Persistent stomach lining inflammation
ICD-10 Codes:
- K2950: Unspecified chronic gastritis without bleeding
Also known as:
- Irritable Bowel Syndrome with Diarrhea
- Irritable Bowel Syndrome
- Irritable Bowel Syndrome (IBS)
- IBS-D
- Diarrhea-Predominant IBS
- Spastic Colon with Diarrhea
ICD-10 Codes:
- K580: Irritable bowel syndrome with diarrhea
Also known as:
- Difficulty Swallowing
- Throat and Esophagus Swallowing Difficulty
- Swallowing Disorder
- Dysphagia
- Trouble swallowing
- Painful swallowing
- Pharyngoesophageal dysphagia
- Trouble swallowing in throat
- Esophageal swallowing problems
ICD-10 Codes:
- R1310: Dysphagia, unspecified
- R1314: Dysphagia, pharyngoesophageal phase
Also known as:
- Diarrhea
- Loose stools
- Runny poop
- Frequent bowel movements
ICD-10 Codes:
- R197: Diarrhea, unspecified
Also known as:
- Fatty Liver Disease
- Liver Disease
- Nonalcoholic Fatty Liver Disease (NAFLD) & NASH
- Nonalcoholic Fatty Liver Disease & NASH in Children
- NAFLD
- NASH
- Hepatic steatosis
ICD-10 Codes:
- K760: Fatty (change of) liver, not elsewhere classified
Also known as:
- Upper Middle Abdominal Pain
- Abdominal Pain
- Epigastric pain
- Pain below breastbone
- Upper stomach pain
ICD-10 Codes:
- R1013: Epigastric pain
Also known as:
- Rectal Bleeding
- Gastrointestinal Bleeding
- Gastrointestinal (GI) Bleeding
- Anal Bleeding
- Blood in Stool
- Lower GI Bleed
ICD-10 Codes:
- K625: Hemorrhage of anus and rectum
Also known as:
- Follow-up After Treatment (Non-Cancer)
- Post-Treatment Check-up
- Aftercare Visit
- Recovery Monitoring Exam
ICD-10 Codes:
- Z09: Encounter for follow-up examination after completed treatment for conditions other than malignant neoplasm
Also known as:
- Iron Deficiency Anemia from Chronic Blood Loss
- Anemia
- Iron
- Anemia due to iron deficiency and blood loss
- Chronic blood loss anemia
- Low iron anemia from bleeding
ICD-10 Codes:
- D500: Iron deficiency anemia secondary to blood loss (chronic)
Also known as:
- Barrett's Esophagus
- Esophagus Disorder
- Barrett’s Esophagus
- Barrett's condition
- Esophageal metaplasia
ICD-10 Codes:
- K2270: Barrett's esophagus without dysplasia
Also known as:
- Constipation
- Difficulty Passing Stool
- Infrequent Bowel Movements
- Hard Stools
ICD-10 Codes:
- K5900: Constipation, unspecified
Also known as:
- Abdominal Bloating
- Gas
- Gas in the Digestive Tract
- Bloated Stomach
- Swollen Belly
- Gaseous Distension
ICD-10 Codes:
- R140: Abdominal distension (gaseous)
Also known as:
- Colon Polyps
- Colonic Polyps
- Colorectal polyps
- Bowel polyps
- Intestinal polyps
ICD-10 Codes:
- K635: Polyp of colon
Also known as:
- Benign Ascending Colon Polyp
- Benign Tumor
- Colonic Polyps
- Colon Polyps
- Non-cancerous ascending colon growth
- Ascending colon adenoma
- Ascending colon benign tumor
ICD-10 Codes:
- D122: Benign neoplasm of ascending colon
Which procedures does Dr. Kolnik perform as a Gastroenterologist?
As a Gastroenterologist, procedures performed by a Dr. John Kolnik may include:
- Colonoscopy
- Colonoscopy Consultation
- Colorectal Cancer Screening
- Endoscopic Ultrasound
- Endoscopy / Endoscopic Ultrasound
- Gastric Balloon
- Gastric Stimulator Implantation Consultation
- Gastric Stimulator Implantation Follow Up
For detailed information, please contact Dr. Kolnik's office.
Does Dr. Kolnik accept my insurance?
Dr. Kolnik accepts most major insurance plans. Important: Please call our office at before your appointment to verify that your specific plan and network are accepted.
What insurance plans does Dr. Kolnik accept in Haddon Heights, NJ?
Dr. Kolnik in Haddon Heights, NJ accepts plans from many carriers. While this list is updated regularly, it is not a guarantee of coverage.
Top Insurances
BCBS Unspecified
Cigna
CVS Health (formerly Aetna)
Federal Employee Program
Horizon BlueCross BlueShield
Humana
Independence Blue Cross
Medicare
State of New Jersey
UnitedHealthcare
View All Insurances
Where is Dr. Kolnik's office located?
What is Dr. Kolnik's NPI number?An National Provider Identifier (NPI) is a unique ID number that identifies doctors and healthcare providers nationwide.
Dr. Kolnik's National Provider Identifier (NPI) number is 1902894496.
What common questions do patients ask about Dr. Kolnik?
Here are answers to patients Frequently Asked Questions (FAQ’s) about Dr. Kolnik
What is Dr. John Kolnik's specialty?
Dr. Kolnik is a Gastroenterologist near Haddon Heights, NJ. An internist focused on diagnosing and treating disorders of the digestive system, encompassing the stomach, intestines, liver, and gallbladder. This specialist manages conditions like abdominal pain, ulcers, diarrhea, cancer, and jaundice, and performs intricate diagnostic and therapeutic procedures using endoscopes to examine internal organs. Contact Dr. Kolnik to book an appointment today.
Is this Dr. John Kolnik affiliated with a ranked Castle Connolly Top Hospital?
Yes, Dr. Kolnik is affiliated with Virtua Our Lady Of Lourdes Hospital, Virtua Voorhees Hospital which are a Castle Connolly Top Hospitals. Castle Connolly Top Hospitals are healthcare institutions recognized for their excellence in specific medical procedures and overall patient care. They are identified through a rigorous peer nomination process, evaluating factors like patient outcomes, quality of care, and expertise. The list recognizes hospitals that excel in 20 or more specific medical procedures, representing the top 25% nationwide. Castle Connolly Top Hospitals
Where can I learn more about Gastroenterologist?
Explore Gastroenterologist with insights from trusted medical experts on EverydayHealth.com, where you'll find the most relevant content and helpful condition guides for up-to date information about symptoms, causes, diagnosis, treatment and more. See all our health guides to find trusted information on medical conditions from our experts at Everyday Health.
Is John Kolnik accepting new patients in Haddon Heights, NJ?
Yes, Dr. John Kolnik is accepting new patients at this time.
Does Dr. John Kolnik offer online booking?
Please contact Dr. Kolnik's office for information about online booking, telehealth, or to schedule an appointment.
How can I make an appointment with John Kolnik?
Please contact Dr. Kolnik's office for information regarding telehealth appointment availability or for scheduling assistance.
Other Gastroenterologist Near Haddon Heights, NJ
JM
Gastroenterologist
Accepting patientsDr. Jay Malamut, MD is a Gastroenterologist, who primarily practices in Haddon Heights, NJ with 2 additional practice locations. He is board certified by the American Board of Internal Medicine.
Haddon Heights, NJ
Transplant Hepatologist
Accepting patientsDr. Simona Rossi, MD is a Transplant Hepatologist, who primarily practices in Cherry Hill, NJ with 2 additional practice locations. She is board certified by the American Board of Internal Medicine.
Cherry Hill, NJ
KJ
Gastroenterologist
Accepting patientsDr. Krysta Johns-Keating is a Gastroenterologist, who primarily practices in Camden, NJ with 2 additional practice locations. She is board certified.
Camden, NJ