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Dr. Mark Brennan, DO

Johnson City, NY

25 Years of Experience

Accepting patients

Affiliated with a Castle Connolly Top Hospital

    Who is Dr. Brennan, Vascular Surgeon in Johnson City, NY?

    Dr. Mark Brennan, DO is a Vascular Surgeon, who primarily practices in Johnson City, NY with 2 additional practice locations. He has been practicing for over 25 years and is board certified. Dr. Brennan completed his residency at Osteo Med Ctr Of Tx-Unthsc/Tco, Vascular Surgery; Grandview Hosp-Core, General Surgery; Philadelphia Coll Of Osteo Med, General Surgery; Philadelphia Coll Of Osteo Med, Flexible Or Transitional Year. Dr. Brennan is fluent in English, and is currently seeing new patients. Dr. Brennan’s practice accepts Medicare, UnitedHealthcare and other major insurance plans. To book an appointment or to confirm insurance options, please call Dr. Brennan’s office at (607) 763-8100.

    Where did Dr. Brennan go to medical school and complete their residency?

    • Residency: Osteo Med Ctr Of Tx-Unthsc/Tco, Vascular Surgery; Grandview Hosp-Core, General Surgery; Philadelphia Coll Of Osteo Med, General Surgery; Philadelphia Coll Of Osteo Med, Flexible Or Transitional Year

    • Medical School: Philadelphia Coll of Osteo Med, Philadelphia Pa

    What languages does Dr. Brennan speak?

    Dr. Brennan and their clinical team can communicate with patients in the following languages:

    • English

    What conditions does Dr. Brennan treat?

    As a Vascular Surgeon, Dr. Brennan 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. Brennan. 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:

    • 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:

    • Peripheral Artery Disease
    • PVD
    • PAD
    • Poor Circulation in Legs
    • Blocked Leg Arteries

    ICD-10 Codes:

    • I739: Peripheral vascular disease, unspecified

    Also known as:

    • Arteriovenous Fistula Complication
    • AV Fistula Problem
    • Dialysis Fistula Issue
    • Mechanical AV Fistula Complication

    ICD-10 Codes:

    • T82590A: Other mechanical complication of surgically created arteriovenous fistula, initial encounter

    Also known as:

    • Groin Hernia (One Side)
    • Hernia
    • Inguinal Hernia
    • Unilateral Inguinal Hernia
    • Single Groin Hernia
    • Hernia in One Groin

    ICD-10 Codes:

    • K4090: Unilateral inguinal hernia, without obstruction or gangrene, not specified as recurrent

    Also known as:

    • Right Carotid Artery Disease
    • Carotid Artery Disease
    • Right Carotid Artery Stenosis
    • Narrowed Right Carotid Artery
    • Right Carotid Artery Blockage

    ICD-10 Codes:

    • I6521: Occlusion and stenosis of right carotid artery

    Also known as:

    • Gallstones with Chronic Gallbladder Inflammation
    • Bile Duct Disease
    • Gallstones
    • Chronic cholecystitis with gallstones
    • Long-term gallbladder inflammation

    ICD-10 Codes:

    • K8010: Calculus of gallbladder with chronic cholecystitis without obstruction

    Also known as:

    • Aortic Aneurysm
    • Abdominal Aortic Aneurysm
    • AAA
    • Aorta Bulge

    ICD-10 Codes:

    • I7143: Infrarenal abdominal aortic aneurysm, without rupture

    Also known as:

    • Narrowing of other blood vessel devices
    • Other vascular device blockage
    • Blood vessel implant narrowing
    • Vascular graft stenosis
    • Prosthetic vascular device blockage

    ICD-10 Codes:

    • T82858A: Stenosis of other vascular prosthetic devices, implants and grafts, initial encounter

    What procedures does Dr. Brennan perform?

    As a Vascular Surgeon, Dr. Brennan 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. Brennan. 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:

    • Long-Term Central Venous Catheter Insertion
    • Central Venous Catheter Insertion (Non-Tunneled)
    • Tunneled central line placement
    • Central venous access device insertion
    • Hickman catheter insertion
    • Broviac catheter insertion
    • Central Line Placement
    • CVC Insertion
    • Temporary Central Line
    • IV Access Catheter

    CPT Codes:

    • 36558: Insertion of tunneled centrally inserted central venous catheter, without subcutaneous port or pump; age 5 years or older
    • 36556: Insertion of non-tunneled centrally inserted central venous catheter; age 5 years or older

    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:

    • Leg Artery Stent Placement
    • Iliac Artery Angioplasty (Additional Vessel)
    • Iliac Artery Blood Flow Restoration with Balloon Angioplasty
    • Femoral Artery Stenting
    • Popliteal Artery Stenting
    • Leg Artery Angioplasty
    • Endovascular Revascularization
    • Iliac Artery Revascularization
    • Pelvic Artery Angioplasty
    • Endovascular Iliac Artery Repair
    • Iliac Artery Angioplasty
    • Endovascular Iliac Revascularization
    • Pelvic Artery Widening

    CPT Codes:

    • 37226: Revascularization, endovascular, open or percutaneous, femoral, popliteal artery(s), unilateral; with transluminal stent placement(s), includes angioplasty within the same vessel, when performed
    • 37222: Revascularization, endovascular, open or percutaneous, iliac artery, each additional ipsilateral iliac vessel; with transluminal angioplasty (List separately in addition to code for primary procedure)
    • 37220: Revascularization, endovascular, open or percutaneous, iliac artery, unilateral, initial vessel; with transluminal 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:

    • Iliac Artery Stent Placement
    • Endovascular iliac artery stenting
    • Iliac artery angioplasty with stent
    • Pelvic artery revascularization

    CPT Codes:

    • 37221: Revascularization, endovascular, open or percutaneous, iliac artery, unilateral, initial vessel; with transluminal stent placement(s), includes angioplasty within the same vessel, when performed

    Also known as:

    • Intravascular Ultrasound (Non-Heart Vessels)
    • Intravascular Ultrasound (Additional Non-Coronary Vessel)
    • IVUS (Non-Coronary)
    • Vessel Ultrasound
    • Internal Artery Ultrasound
    • IVUS for Blood Vessels
    • Non-Coronary Vessel Ultrasound
    • Internal Blood Vessel Imaging

    CPT Codes:

    • 37252: Intravascular ultrasound (noncoronary vessel) during diagnostic evaluation and/or therapeutic intervention, including radiological supervision and interpretation; initial noncoronary vessel (List separately in addition to code for primary procedure)
    • 37253: Intravascular ultrasound (noncoronary vessel) during diagnostic evaluation and/or therapeutic intervention, including radiological supervision and interpretation; each additional noncoronary vessel (List separately in addition to code for primary procedure)

    Also known as:

    • Selective Artery Catheter Placement
    • Major Vein Catheter Insertion
    • Arterial Catheterization
    • Vascular Catheter Placement
    • Diagnostic Angiography Catheter
    • Central Venous Catheter Placement
    • Vena Cava Catheterization
    • IVC/SVC Catheter Insertion

    CPT Codes:

    • 36246: Selective catheter placement, arterial system; initial second order abdominal, pelvic, or lower extremity artery branch, within a vascular family
    • 36010: Introduction of catheter, superior or inferior vena cava

    Also known as:

    • Dialysis Access Angioplasty and Stenting
    • Dialysis Fistula Repair
    • Dialysis Graft Stenting
    • Peripheral Dialysis Circuit Intervention

    CPT Codes:

    • 36903: 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 transcatheter placement of intravascular stent(s), peripheral dialysis segment, including all imaging and radiological supervision and interpretation necessary to perform the stenting, and all angioplasty within the peripheral dialysis segment

    Also known as:

    • Endovascular Aortic Aneurysm Repair
    • Fistula Ligation or Banding
    • EVAR
    • Aortic Stent Placement
    • Aortic Aneurysm Repair
    • Minimally Invasive Aorta Repair
    • AV Fistula Closure
    • Fistula Banding
    • Angioaccess Revision

    CPT Codes:

    • 34705: Endovascular repair of infrarenal aorta and/or iliac artery(ies) by deployment of an aorto-bi-iliac endograft including pre-procedure sizing and device selection, all nonselective catheterization(s), all associated radiological supervision and interpretation, all endograft extension(s) placed in the aorta from the level of the renal arteries to the iliac bifurcation, and all angioplasty/stenting performed from the level of the renal arteries to the iliac bifurcation; for other than rupture (eg, for aneurysm, pseudoaneurysm, dissection, penetrating ulcer)
    • 37607: Ligation or banding of angioaccess arteriovenous fistula

    Also known as:

    • Creation of AV Fistula with Graft for Dialysis
    • Arteriovenous Fistula Creation (Graft)
    • Dialysis Access Graft
    • Non-Autogenous AV Fistula
    • Synthetic Graft for Dialysis

    CPT Codes:

    • 36830: Creation of arteriovenous fistula by other than direct arteriovenous anastomosis (separate procedure); nonautogenous graft (eg, biological collagen, thermoplastic graft)

    Also known as:

    • Carotid Artery Clearing Surgery
    • Carotid endarterectomy
    • Neck artery surgery
    • Vertebral artery clearing
    • Subclavian artery clearing

    CPT Codes:

    • 35301: Thromboendarterectomy, including patch graft, if performed; carotid, vertebral, subclavian, by neck incision

    Also known as:

    • Dialysis Access Balloon Angioplasty
    • Dialysis Fistula Angioplasty
    • Dialysis Graft Angioplasty
    • Central Dialysis Segment Angioplasty
    • AV Fistula Angioplasty

    CPT Codes:

    • 36907: Transluminal balloon angioplasty, central dialysis segment, performed through dialysis circuit, including all imaging and radiological supervision and interpretation required to perform the angioplasty (List separately in addition to code for primary procedure)

    Also known as:

    • Leg Artery Angioplasty (Femoral/Popliteal)
    • Femoral Artery Angioplasty
    • Popliteal Artery Angioplasty
    • Leg Artery Revascularization

    CPT Codes:

    • 37224: Revascularization, endovascular, open or percutaneous, femoral, popliteal artery(s), unilateral; with transluminal angioplasty

    Also known as:

    • Iliac Artery Stent Placement
    • Iliac Artery Revascularization
    • Iliac Artery Angioplasty with Stent
    • Pelvic Artery Stenting

    CPT Codes:

    • 37223: Revascularization, endovascular, open or percutaneous, iliac artery, each additional ipsilateral iliac vessel; with transluminal stent placement(s), includes angioplasty within the same vessel, when performed (List separately in addition to code for primary procedure)

    Also known as:

    • Femoral-Popliteal Bypass Graft (Non-Vein)
    • Leg Artery Bypass
    • Fem-Pop Bypass
    • Artificial Graft for Leg Artery

    CPT Codes:

    • 35656: Bypass graft, with other than vein; femoral-popliteal

    Also known as:

    • Arteriovenous Fistula Creation
    • AV Fistula Surgery
    • Cimino Fistula
    • Vascular Access for Dialysis

    CPT Codes:

    • 36821: Arteriovenous anastomosis, open; direct, any site (eg, Cimino type) (separate procedure)

    Also known as:

    • Dialysis Access Check and Imaging
    • Dialysis Circuit Angiography
    • Fistula/Graft Evaluation
    • Dialysis Access Diagnostic Procedure

    CPT Codes:

    • 36901: 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;

    Also known as:

    • Femoral Artery Blockage Removal
    • Femoral thromboendarterectomy
    • Common femoral artery plaque removal
    • Leg artery clot removal

    CPT Codes:

    • 35371: Thromboendarterectomy, including patch graft, if performed; common femoral

    Also known as:

    • Femoral-Femoral Artery Bypass (Non-Vein)
    • Femoral-femoral bypass graft
    • Leg artery bypass surgery
    • Synthetic femoral bypass

    CPT Codes:

    • 35661: Bypass graft, with other than vein; femoral-femoral

    Also known as:

    • Tying Off Leg Vein for Varicose Veins
    • Saphenous Vein Ligation
    • Varicose Vein Surgery
    • Vein Stripping

    CPT Codes:

    • 37700: Ligation and division of long saphenous vein at saphenofemoral junction, or distal interruptions

    Also known as:

    • Artery Stent Placement (Non-Coronary/Carotid/Leg)
    • Intravascular Stent Insertion
    • Transcatheter Stenting
    • Peripheral Artery Stent

    CPT Codes:

    • 37236: Transcatheter placement of an intravascular stent(s) (except lower extremity artery(s) for occlusive disease, cervical carotid, extracranial vertebral or intrathoracic carotid, intracranial, or coronary), open or percutaneous, including radiological supervision and interpretation and including all angioplasty within the same vessel, when performed; initial artery

    Also known as:

    • Leg Artery Angioplasty
    • Tibial Artery Angioplasty
    • Peroneal Artery Angioplasty
    • Leg Artery Revascularization

    CPT Codes:

    • 37228: Revascularization, endovascular, open or percutaneous, tibial, peroneal artery, unilateral, initial vessel; with transluminal angioplasty

    Also known as:

    • Removal of Tunneled Central Venous Catheter
    • Removal of Abdominal Catheter
    • Central Line Removal
    • Tunneled Catheter Extraction
    • Venous Access Device Removal
    • Intraperitoneal catheter removal
    • Tunneled catheter extraction
    • Peritoneal dialysis catheter removal

    CPT Codes:

    • 36589: Removal of tunneled central venous catheter, without subcutaneous port or pump
    • 49422: Removal of tunneled intraperitoneal catheter

    Also known as:

    • Laparoscopic Intraperitoneal Catheter Insertion
    • Tunneled Peritoneal Catheter Placement
    • Laparoscopic Abdominal Catheter
    • Peritoneal Dialysis Catheter Insertion

    CPT Codes:

    • 49324: Laparoscopy, surgical; with insertion of tunneled intraperitoneal catheter

    Also known as:

    • Laparoscopic Gallbladder Removal
    • Keyhole Gallbladder Surgery
    • Cholecystectomy Laparoscopic
    • Minimally Invasive Gallbladder Surgery

    CPT Codes:

    • 47562: Laparoscopy, surgical; cholecystectomy

    Also known as:

    • Inguinal Hernia Repair (Adults and Children 5+)
    • Groin Hernia Surgery
    • Reducible Inguinal Hernia Repair
    • First Inguinal Hernia Fix
    • Adult Inguinal Hernia Surgery

    CPT Codes:

    • 49505: Repair initial inguinal hernia, age 5 years or older; reducible

    Also known as:

    • Thigh Amputation
    • Limb Loss
    • Leg Amputation (Femur)
    • Above-Knee Amputation
    • Femoral Amputation

    CPT Codes:

    • 27590: Amputation, thigh, through femur, any level;

    Also known as:

    • Drainage of Complex Infected Surgical Wound
    • Postoperative Wound Incision and Drainage
    • Surgical Wound Infection Treatment
    • Complex Wound Debridement

    CPT Codes:

    • 10180: Incision and drainage, complex, postoperative wound infection

    Does Dr. Brennan accept my insurance?

    Dr. Brennan accepts most major insurance plans. Important: Please call our office at (607) 763-8100 before your appointment to verify that your specific plan and network are accepted.

    What insurance plans does Dr. Brennan accept in Johnson City, NY?

    Dr. Brennan in Johnson City, NY accepts plans from many carriers. While this list is updated regularly, it is not a guarantee of coverage.

    Top Insurances

    • CVS Health (formerly Aetna)

    • Department of Defense / Tricare

    • Humana

    • Martin's Point

    • Medicare

    • State of Tennessee

    • UnitedHealthcare

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    Where is Dr. Brennan's office located?

    Dr. Mark Brennan's Primary Practice

    33 Harrison St # 57

    Johnson City, NY 13790

    (607) 763-8100

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    Dr. Mark Brennan's Practice 2

    179 N Broad St

    Norwich, NY 13815

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    Dr. Mark Brennan's Practice 3

    24 Mitchell Ave

    Binghamton, NY 13903

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    What is Dr. Brennan's NPI number?An National Provider Identifier (NPI) is a unique ID number that identifies doctors and healthcare providers nationwide.

    Dr. Brennan's National Provider Identifier (NPI) number is 1174523443.

    What common questions do patients ask about Dr. Brennan?

    Here are answers to patients Frequently Asked Questions (FAQ’s) about Dr. Brennan

    What is Dr. Mark Brennan's specialty?

    Dr. Brennan is a Vascular Surgeon near Johnson City, NY. A vascular surgeon specializes in the management of surgical disorders related to blood vessels, excluding those of the heart and intracranial vessels. Contact Dr. Brennan to book an appointment today.

    Is this Dr. Mark Brennan affiliated with a ranked Castle Connolly Top Hospital?

    Yes, Dr. Brennan is affiliated with Albany Medical Center, Guthrie Lourdes Hospital, Westchester Medical Center 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 Vascular Surgeon?

    Explore Vascular Surgeon 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 Mark Brennan accepting new patients in Johnson City, NY?

    Yes, Dr. Mark Brennan is accepting new patients at this time.

    Does Dr. Mark Brennan offer online booking?

    Please contact Dr. Brennan's office at (607) 763-8100 for information about online booking, telehealth, or to schedule an appointment.

    How can I make an appointment with Mark Brennan?

    Please contact Dr. Brennan's office at (607) 763-8100 for information regarding telehealth appointment availability or for scheduling assistance.

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