JG
27 Years of Experience
Accepting patients
Affiliated with a Castle Connolly Top Hospital
Who is Dr. Gemery, Vascular & Interventional Radiologist in Lebanon, NH?
Dr. John Gemery is a Vascular & Interventional Radiologist, who primarily practices in Lebanon, NH. He has been practicing for over 27 years and is board certified. Dr. Gemery graduated from University of Vermont, College of Medicine, Burlington. Dr. Gemery is fluent in English, German, and Polish, and is currently seeing new patients. Dr. Gemery’s practice accepts Cigna, Medicare, UnitedHealthcare and other major insurance plans. To book an appointment or to confirm insurance options, please call Dr. Gemery’s office at (603) 650-5000.
What are Areas of Expertise for Dr. Gemery?
Dr. John Gemery is a highly-rated, board-certified Vascular & Interventional Radiologist known for expertly diagnosing, treating, and managing a wide array of related conditions or procedures. Utilizing the latest medical advancements and evidence-based practices, Dr. Gemery empowers patients to confidently navigate their health journey, specializing in Angiogram, Chemoembolization & Tumor Ablation, Liver Cancer/Radioembolization, or comprehensive wellness support. Serving the Lebanon/NH community, Dr. Gemery is dedicated to enhancing lives through expert, patient-centered care.
Where did Dr. Gemery go to medical school and complete their residency?
Medical School: University of Vermont, College of Medicine, Burlington
Is Dr. Gemery board certified as a Vascular & Interventional Radiologist?
Yes, Dr. John Gemery is board certified by the American Board of Radiology
What languages does Dr. Gemery speak?
Dr. Gemery and their clinical team can communicate with patients in the following languages:
English
German
Polish
What conditions does Dr. Gemery treat?
As a Vascular & Interventional Radiologist, Dr. Gemery 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. Gemery. 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:
- Surgical Drain Change or Removal
- Wounds and Injuries
- Drain removal after surgery
- Post-operative drain care
- Changing surgical drains
ICD-10 Codes:
- Z4803: Encounter for change or removal of drains
Also known as:
- Cirrhosis
- Alcoholic Cirrhosis with Fluid Buildup
- Alcohol Use Disorder (AUD)
- Liver scarring
- End-stage liver disease
- Chronic liver failure
- Alcoholic cirrhosis with ascites
- Alcohol-induced cirrhosis with fluid
- Liver scarring with abdominal fluid
ICD-10 Codes:
- K7460: Unspecified cirrhosis of liver
- K7031: Alcoholic cirrhosis of liver with ascites
Also known as:
- Painful Varicose Veins
- Varicose Veins
- Symptomatic Varicose Veins
- Aching Leg Veins
- Spider Veins
- Venous Insufficiency
- Chronic Venous Disease
ICD-10 Codes:
- I83811: Varicose veins of right lower extremity with pain
- I83812: Varicose veins of left lower extremity with pain
- I83813: Varicose veins of bilateral lower extremities with pain
Also known as:
- Pleural Effusion
- Other Pleural Condition
- Pleural Disorder
- Fluid in lungs
- Water on the lung
- Fluid around lungs
- Rare Pleural Diseases
- Uncommon Lung Lining Problems
- Specific Pleural Disorders
ICD-10 Codes:
- J90: Pleural effusion, not elsewhere classified
- J948: Other specified pleural conditions
Also known as:
- Vascular Access Device Management
- Vascular Access Care
- Port Management
- Catheter Care
ICD-10 Codes:
- Z452: Encounter for adjustment and management of vascular access device
Also known as:
- Fluid in Abdomen
- Liver Disease
- Ascites
- Abdominal fluid buildup
- Peritoneal fluid
- Hepatic illness
- Liver condition
ICD-10 Codes:
- R188: Other ascites
- K769: Liver disease, unspecified
Also known as:
- Urinary Device Fitting and Adjustment
- Urological Device Fitting
- Bladder Device Adjustment
- Catheter Fitting
ICD-10 Codes:
- Z466: Encounter for fitting and adjustment of urinary device
Also known as:
- Artificial Opening Care
- Gastrostomy Care
- Ostomy
- Stoma Management
- Surgical Opening Care
- Diversion Care
- G-tube Care
- Feeding Tube Management
- Stomach Tube Care
ICD-10 Codes:
- Z438: Encounter for attention to other artificial openings
- Z431: Encounter for attention to gastrostomy
Also known as:
- Single Lung Nodule
- Other Abnormal Findings on Lung Scan
- Lung Disease
- Lung Spot
- Pulmonary Nodule
- Spot on Lung Scan
- Unusual Lung Scan Results
- Atypical Lung Imaging
- Nonspecific Lung Abnormality
ICD-10 Codes:
- R911: Solitary pulmonary nodule
- R918: Other nonspecific abnormal finding of lung field
Also known as:
- Acute Kidney Failure
- Kidney Failure
- Acute Renal Failure
- Sudden Kidney Failure
ICD-10 Codes:
- N179: Acute kidney failure, unspecified
Also known as:
- Peritoneal Abscess
- Abscess
- Peritoneal Disorder
- Abdominal abscess
- Intra-abdominal abscess
- Pus pocket in abdomen
ICD-10 Codes:
- K651: Peritoneal abscess
Also known as:
- End-Stage Kidney Disease
- Kidney Failure
- Chronic Kidney Disease (CKD)
- Helping Your Child Adapt to Life with Chronic Kidney Disease
- ESRD
- End-Stage Renal Failure
ICD-10 Codes:
- N186: End stage renal disease
Also known as:
- Other Kidney and Ureter Disorder
- Kidney Disease
- Ureteral Disorder
- Kidney and Ureter Problems
- Renal and Ureteral Disorders
ICD-10 Codes:
- N2889: Other specified disorders of kidney and ureter
What procedures does Dr. Gemery perform?
As a Vascular & Interventional Radiologist, Dr. Gemery performs a variety of medical procedures. This procedure information is derived from anonymized insurance claims and highlights the medical procedures most commonly performed by Dr. Gemery. 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:
- Inserting a Long-Term IV Port (Central Line)
- Tunneled central venous catheter insertion
- Subcutaneous port placement
- Central line with port
CPT Codes:
- 36561: Insertion of tunneled centrally inserted central venous access device, with subcutaneous port; age 5 years or older
Also known as:
- Tunneled Central Venous Catheter Removal
- Central Line Explant
- Port-a-Cath Removal
- Implantable Venous Access Device Removal
- Tunneled Catheter Extraction
CPT Codes:
- 36590: Removal of tunneled central venous access device, with subcutaneous port or pump, central or peripheral insertion
Also known as:
- Selective Artery Catheter Placement
- Selective Vein Catheter Placement
- Advanced Catheter Placement in Arteries
- Arterial Catheterization
- Vascular Catheter Placement
- Diagnostic Catheter Insertion
- Venous Catheterization
- Jugular Vein Catheter
- Renal Vein Catheter
- Selective arterial catheterization
- Complex arterial catheter placement
- Vascular catheterization
- Angiography catheter placement
CPT Codes:
- 36247: Selective catheter placement, arterial system; initial third order or more selective abdominal, pelvic, or lower extremity artery branch, within a vascular family
- 36011: Selective catheter placement, venous system; first order branch (eg, renal vein, jugular vein)
- 36248: Selective catheter placement, arterial system; additional second order, third order, and beyond, abdominal, pelvic, or lower extremity artery branch, within a vascular family (List in addition to code for initial second or third order vessel as appropriate)
Also known as:
- Blood Vessel Blocking for Tumors or Organ Problems
- Venous Embolization
- Vascular embolization
- Artery occlusion for tumors
- Organ ischemia embolization
- Therapeutic embolization
- Vein Occlusion Procedure
- Vascular Malformation Embolization
- Varicocele Embolization
CPT Codes:
- 37243: Vascular embolization or occlusion, inclusive of all radiological supervision and interpretation, intraprocedural roadmapping, and imaging guidance necessary to complete the intervention; for tumors, organ ischemia, or infarction
- 37241: Vascular embolization or occlusion, inclusive of all radiological supervision and interpretation, intraprocedural roadmapping, and imaging guidance necessary to complete the intervention; venous, other than hemorrhage (eg, congenital or acquired venous malformations, venous and capillary hemangiomas, varices, varicoceles)
Also known as:
- Dialysis Circuit Angioplasty with Balloon
- Dialysis Fistula Angioplasty
- Dialysis Graft Angioplasty
- Peripheral Dialysis Segment Angioplasty
CPT Codes:
- 36902: Introduction of needle(s) and/or catheter(s), dialysis circuit, with diagnostic angiography of the dialysis circuit, including all direct puncture(s) and catheter placement(s), injection(s) of contrast, all necessary imaging from the arterial anastomosis and adjacent artery through entire venous outflow including the inferior or superior vena cava, fluoroscopic guidance, radiological supervision and interpretation and image documentation and report; with transluminal balloon angioplasty, peripheral dialysis segment, including all imaging and radiological supervision and interpretation necessary to perform the angioplasty
Also known as:
- Radiofrequency Vein Ablation
- Endovenous Radiofrequency Ablation
- RF Ablation for Varicose Veins
- Vein Closure Procedure
- Varicose Vein Treatment
CPT Codes:
- 36475: Endovenous ablation therapy of incompetent vein, extremity, inclusive of all imaging guidance and monitoring, percutaneous, radiofrequency; first vein treated
Also known as:
- Long-Term Central Venous Catheter Insertion
- Tunneled central line placement
- Central venous access device insertion
- Hickman catheter insertion
- Broviac catheter insertion
CPT Codes:
- 36558: Insertion of tunneled centrally inserted central venous catheter, without subcutaneous port or pump; age 5 years or older
Also known as:
- Removal of Tunneled Central Venous Catheter
- Central Line Removal
- Tunneled Catheter Extraction
- Venous Access Device Removal
CPT Codes:
- 36589: Removal of tunneled central venous catheter, without subcutaneous port or pump
Also known as:
- Central Venous Catheter Replacement
- Tunneled Catheter Exchange
- Central Line Replacement
- IV Catheter Change
CPT Codes:
- 36581: Replacement, complete, of a tunneled centrally inserted central venous catheter, without subcutaneous port or pump, through same venous access
Also known as:
- Contrast Injection for Abscess/Cyst Assessment
- Drainage Catheter Contrast Study
- Abscess Imaging
- Cystogram via Drain
CPT Codes:
- 49424: Contrast injection for assessment of abscess or cyst via previously placed drainage catheter or tube (separate procedure)
Also known as:
- Abscess or Cyst Drain Catheter Change
- Abscess Drainage Catheter Exchange
- Cyst Drain Replacement
- Radiologically Guided Catheter Change
CPT Codes:
- 49423: Exchange of previously placed abscess or cyst drainage catheter under radiological guidance (separate procedure)
Also known as:
- Stomach or Colon Feeding Tube Replacement
- Replacement of Duodenostomy or Jejunostomy Tube
- Gastrostomy Tube Change
- Cecostomy Tube Replacement
- Percutaneous Feeding Tube Exchange
- Feeding tube replacement
- J-tube replacement
- D-tube replacement
- Percutaneous feeding tube change
CPT Codes:
- 49450: Replacement of gastrostomy or cecostomy (or other colonic) tube, percutaneous, under fluoroscopic guidance including contrast injection(s), image documentation and report
- 49451: Replacement of duodenostomy or jejunostomy tube, percutaneous, under fluoroscopic guidance including contrast injection(s), image documentation and report
Also known as:
- Biliary Drainage Catheter Exchange
- Percutaneous Biliary Catheter Exchange
- Bile Duct Drain Change
- Biliary Drain Replacement
- Bile Duct Catheter Swap
CPT Codes:
- 47536: Exchange of biliary drainage catheter (eg, external, internal-external, or conversion of internal-external to external only), percutaneous, including diagnostic cholangiography when performed, imaging guidance (eg, fluoroscopy), and all associated radiological supervision and interpretation
Also known as:
- Needle Biopsy of Abdominal or Pelvic Mass
- Percutaneous Abdominal Biopsy
- Retroperitoneal Mass Biopsy
- Abdominal Needle Biopsy
CPT Codes:
- 49180: Biopsy, abdominal or retroperitoneal mass, percutaneous needle
Also known as:
- Percutaneous Gastrostomy Tube Insertion
- PEG Tube Placement
- G-Tube Insertion
- Feeding Tube Placement (Stomach)
CPT Codes:
- 49440: Insertion of gastrostomy tube, percutaneous, under fluoroscopic guidance including contrast injection(s), image documentation and report
Also known as:
- Radiofrequency Ablation for Liver Tumors
- RFA Liver
- Percutaneous Liver Ablation
- Liver Tumor Destruction
- Liver Cancer Treatment
CPT Codes:
- 47382: Ablation, 1 or more liver tumor(s), percutaneous, radiofrequency
Also known as:
- Sclerotherapy for Fluid Collection
- Cyst Sclerotherapy
- Lymphocele Treatment
- Seroma Injection
- Fluid Drainage and Treatment
CPT Codes:
- 49185: Sclerotherapy of a fluid collection (eg, lymphocele, cyst, or seroma), percutaneous, including contrast injection(s), sclerosant injection(s), diagnostic study, imaging guidance (eg, ultrasound, fluoroscopy) and radiological supervision and interpretation when performed
Also known as:
- Percutaneous Cholangiography (Diagnostic)
- Bile Duct X-ray
- Diagnostic Cholangiogram
- Liver Bile Duct Imaging
CPT Codes:
- 47531: Injection procedure for cholangiography, percutaneous, complete diagnostic procedure including imaging guidance (eg, ultrasound and/or fluoroscopy) and all associated radiological supervision and interpretation; existing access
Also known as:
- Gastro-Jejunostomy Tube Replacement
- Percutaneous GJ Tube Replacement
- Feeding Tube Change (GJ)
- GJ Tube Exchange
CPT Codes:
- 49452: Replacement of gastro-jejunostomy tube, percutaneous, under fluoroscopic guidance including contrast injection(s), image documentation and report
Also known as:
- Liver Biopsy (Needle)
- Lung or Chest Biopsy
- Kidney Biopsy
- Muscle Needle Biopsy
- Biopsy
- Percutaneous liver biopsy
- Needle liver sample
- Liver tissue biopsy
- Liver needle aspiration
- Percutaneous lung biopsy
- Mediastinum core needle biopsy
- Image-guided lung biopsy
- Renal biopsy
- Percutaneous kidney biopsy
- Needle kidney biopsy
- Percutaneous Muscle Biopsy
- Muscle Tissue Sample
CPT Codes:
- 47000: Biopsy of liver, needle; percutaneous
- 32408: Core needle biopsy, lung or mediastinum, percutaneous, including imaging guidance, when performed
- 50200: Renal biopsy; percutaneous, by trocar or needle
- 20206: Biopsy, muscle, percutaneous needle
Also known as:
- Exchange of Kidney Drainage Catheter
- Nephrostomy tube exchange
- Percutaneous nephrostomy catheter change
- Kidney drainage tube replacement
- Nephrostogram with catheter exchange
CPT Codes:
- 50435: Exchange nephrostomy catheter, percutaneous, including diagnostic nephrostogram and/or ureterogram when performed, imaging guidance (eg, ultrasound and/or fluoroscopy) and all associated radiological supervision and interpretation
Also known as:
- Kidney-Ureter Catheter Change
- Ureteral Stent or Tube Change (Ileal Conduit)
- Nephroureteral Stent Change
- Kidney Stent Replacement
- Ureteral Catheter Exchange
- Ureterostomy Tube Replacement
- Ileal Conduit Stent Change
- Urinary Diversion Tube Change
CPT Codes:
- 50387: Removal and replacement of externally accessible nephroureteral catheter (eg, external/internal stent) requiring fluoroscopic guidance, including radiological supervision and interpretation
- 50688: Change of ureterostomy tube or externally accessible ureteral stent via ileal conduit
Also known as:
- Kidney Drainage Tube Placement
- Percutaneous Nephrostomy
- Nephrostomy Catheter Insertion
- Kidney Drainage Catheter
CPT Codes:
- 50432: Placement of nephrostomy catheter, percutaneous, including diagnostic nephrostogram and/or ureterogram when performed, imaging guidance (eg, ultrasound and/or fluoroscopy) and all associated radiological supervision and interpretation
Also known as:
- Simple Cystostomy Tube Change
- Bladder Tube Replacement
- Suprapubic Catheter Change
- Cystostomy Maintenance
CPT Codes:
- 51705: Change of cystostomy tube; simple
Also known as:
- Removal of Kidney Drainage Tube (with X-ray Guidance)
- Nephrostomy Tube Exchange
- Kidney Tube Extraction
- Fluoroscopic Nephrostomy Removal
CPT Codes:
- 50389: Removal of nephrostomy tube, requiring fluoroscopic guidance (eg, with concurrent indwelling ureteral stent)
Also known as:
- Bladder Aspiration with Suprapubic Catheter
- Suprapubic catheter insertion
- Bladder drainage tube placement
- Percutaneous bladder catheter
CPT Codes:
- 51102: Aspiration of bladder; with insertion of suprapubic catheter
Also known as:
- Kidney and Ureter X-ray with Dye
- Antegrade Nephrostogram
- Ureterogram
- Kidney Dye Study
- Ureter Dye Study
CPT Codes:
- 50431: Injection procedure for antegrade nephrostogram and/or ureterogram, complete diagnostic procedure including imaging guidance (eg, ultrasound and fluoroscopy) and all associated radiological supervision and interpretation; existing access
Also known as:
- Ureteral Stricture Balloon Dilation
- Ureter dilation
- Kidney tube widening
- Balloon ureteroplasty
- Ureteral stent placement
CPT Codes:
- 50706: Balloon dilation, ureteral stricture, including imaging guidance (eg, ultrasound and/or fluoroscopy) and all associated radiological supervision and interpretation (List separately in addition to code for primary procedure)
Also known as:
- Abdominal Fluid Drainage with Imaging Guidance
- Image-Guided Abdominal Fluid Drainage
- Draining a Lump or Collection of Fluid
- Guided Abdominal Paracentesis
- Ascites Drainage with Ultrasound
- Fluid Removal from Belly
- Percutaneous fluid drainage
- Abscess drainage with imaging
- Peritoneal fluid aspiration
- Abscess Aspiration
- Cyst Drainage
- Hematoma Puncture
- Bulla Aspiration
CPT Codes:
- 49083: Abdominal paracentesis (diagnostic or therapeutic); with imaging guidance
- 49406: Image-guided fluid collection drainage by catheter (eg, abscess, hematoma, seroma, lymphocele, cyst); peritoneal or retroperitoneal, percutaneous
- 10160: Puncture aspiration of abscess, hematoma, bulla, or cyst
Also known as:
- Image-Guided Fluid Drainage
- Abscess drainage
- Hematoma drainage
- Cyst drainage
- Percutaneous fluid aspiration
CPT Codes:
- 10030: Image-guided fluid collection drainage by catheter (eg, abscess, hematoma, seroma, lymphocele, cyst), soft tissue (eg, extremity, abdominal wall, neck), percutaneous
Also known as:
- Fluid Removal from Lung Area with Imaging Guidance
- Thoracentesis
- Pleural Fluid Aspiration
- Lung Tap
- Fluid Drainage from Chest
CPT Codes:
- 32555: Thoracentesis, needle or catheter, aspiration of the pleural space; with imaging guidance
Also known as:
- Lung Fluid Drainage with Catheter
- Percutaneous Pleural Drainage
- Chest Tube Insertion
- Imaging-Guided Pleural Drain
CPT Codes:
- 32557: Pleural drainage, percutaneous, with insertion of indwelling catheter; with imaging guidance
Also known as:
- Superficial Lymph Node Needle Biopsy
- Biopsy
- Needle Lymph Node Biopsy
- Cervical Lymph Node Biopsy
- Inguinal Lymph Node Biopsy
- Axillary Lymph Node Biopsy
CPT Codes:
- 38505: Biopsy or excision of lymph node(s); by needle, superficial (eg, cervical, inguinal, axillary)
Does Dr. Gemery accept my insurance?
Dr. Gemery accepts most major insurance plans. Important: Please call our office at (603) 650-5000 before your appointment to verify that your specific plan and network are accepted.
What insurance plans does Dr. Gemery accept in Lebanon, NH?
Dr. Gemery in Lebanon, NH accepts plans from many carriers. While this list is updated regularly, it is not a guarantee of coverage.
Top Insurances
BCBS Unspecified
BlueCross and BlueShield of Vermont
Centene
Cigna
CVS Health (formerly Aetna)
Elevance Health Inc. (formerly Anthem)
Medicare
State of Tennessee
State of Vermont
UnitedHealthcare
View All Insurances
Where is Dr. Gemery's office located?
What is Dr. Gemery's NPI number?An National Provider Identifier (NPI) is a unique ID number that identifies doctors and healthcare providers nationwide.
Dr. Gemery's National Provider Identifier (NPI) number is 1811921836.
What common questions do patients ask about Dr. Gemery?
Here are answers to patients Frequently Asked Questions (FAQ’s) about Dr. Gemery
What is Dr. John Gemery's specialty?
Dr. Gemery is a Vascular & Interventional Radiologist near Lebanon, NH. A vascular and interventional radiologist is responsible to diagnose and treat diseases using various imaging modalities, including fluoroscopy, digital radiography, computed tomography, sonography, and magnetic resonance imaging. Contact Dr. Gemery to book an appointment today.
Is this Dr. John Gemery affiliated with a ranked Castle Connolly Top Hospital?
Yes, Dr. Gemery is affiliated with Dartmouth Hitchcock Medical Center which is a Castle Connolly Top Hospital. 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 Vascular & Interventional Radiologist?
Explore Vascular & Interventional Radiologist 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 Gemery accepting new patients in Lebanon, NH?
Yes, Dr. John Gemery is accepting new patients at this time.
Does Dr. John Gemery offer online booking?
Please contact Dr. Gemery's office at (603) 650-5000 for information about online booking, telehealth, or to schedule an appointment.
How can I make an appointment with John Gemery?
Please contact Dr. Gemery's office at (603) 650-5000 for information regarding telehealth appointment availability or for scheduling assistance.
Which board certifications does Dr. John Gemery have?
Dr. John Gemery is certified by the American Board of Radiology.
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