Dr. Mark Brennan, DO

Dr. Mark Brennan, DO

General Surgery  ·  
Male  ·  
Age 52
(17)
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Dr. Mark Brennan, DO is a general surgery specialist in Johnson City, NY and has been practicing for 25 years. He graduated from Philadelphia College Of Osteopathic Medicine in 1994 and specializes in general surgery and vascular surgery.

30 Harrison St Ste 455

Johnson City, NY 13790

Contact Information

(607) 763-8100

Insurance Accepted

  • Aetna
  • Blue Cross Blue Shield
  • Capital District Physician's Health Plan (CDPHP)
  • Cigna
  • Empire Blue Cross Blue Shield
  • Excellus BlueCross BlueShield
  • Humana
  • MVP Health Care

*Please verify this information when scheduling an appointment.

Background Check

1 board action Found
  • Modification Order (10/1/2015)View details
No malpractice claims found for New York
No disciplinary actions found for the years we collect data
Learn more about background checks

Experience Check

Check Dr. Brennan's experience treating your condition or procedure

Dr. Brennan's Top Procedures and Conditions

Treatment Frequency
Non-Coronary Angioplasty, Atherectomy, and Stenting
very high
very high

Treatment Frequency

Dr. Brennan performs Non-Coronary Angioplasty, Atherectomy, and Stenting more than 100% of his peers

Dr. Brennan performs this procedure more than 100% of his peers

Rating Includes other areas of care:

  • Airway Stenting
  • Carotid Artery Stent Placement
  • Enteral Stenting
  • Esophageal Stenting
  • Intracranial Angioplasty With Stent Placement
  • Intracranial Vessel Angioplasty
  • Peripheral Angioplasty
  • Renal Artery Angioplasty
  • Stenting, Intracranial Vessels
  • Wingspan™ Stent System
Acute Deep Vein Thrombosis (DVT)
very high
very high

Treatment Frequency

Dr. Brennan treats Acute Deep Vein Thrombosis (DVT) more than 99% of his peers

Dr. Brennan treats this condition more than 99% of his peers

Deep Vein Thrombosis (DVT)
very high
very high

Treatment Frequency

Dr. Brennan treats Deep Vein Thrombosis (DVT) more than 99% of his peers

Dr. Brennan treats this condition more than 99% of his peers

Dr. Brennan's conditions and procedures:

Abdominal Aortic Aneurysm (AAA)
Acute Deep Vein Thrombosis (DVT)
Acute Venous Embolism Thrombosis
Aneurysm
Aortic Aneurysm
Aortic Dissection
Aortic Ectasia
Aortic Embolism and Thrombosis
Aortic Repair, Open or Repair of Arterial Aneurysm, Open
Arteriovenous Fistula Repair
Arteriovenous Shunt Creation
Atherosclerosis
Atherosclerosis of Aorta
Brachial Plexus Palsy
Carotid Artery Disease
Carotid Artery Stent Placement
Carotid Endarterectomy (CEA) or Excision of Infected Graft
Chronic Deep Vein Thrombosis (DVT)
Chronic Venous Embolism Thrombosis
Congenital Heart Defects
Deep Vein Thrombosis (DVT)
Dialysis Access Procedures
Dressing and-or Debridement of Wound, Infection, or Burn (incl. Negative Pressure Wound Therapy)
Embolectomy, Thrombectomy, or Vessel Exploration
Endovascular Repair of Abdominal Aortic Aneurysm
Endovascular Repair of Aorta
Heart Disease
Heart Surgery
Hypertensive Encephalopathy
Laparotomy
Lung Surgery
Median Arcuate Ligament Syndrome (MALS)
Non-Coronary Angioplasty, Atherectomy, and Stenting
Peripheral Arterial Aneurysm
Peripheral Arterial Aneurysm and Dissection
Peripheral Arterial Disease of Extremities
Peripheral Arterial Dissection
Peripheral Arterial Embolism and Thrombosis
Peripheral Artery Bypass
Peripheral Artery Catheterization
Peripheral Autonomic Neuropathy
Peripheral Nerve Disorders
Peripheral Vascular Disease (PAD, PVD)
Phlebitis and Thrombophlebitis
Port Placements or Replacements
Removal of Arteriovenous Shunt for Renal Dialysis
Renal Artery Arteriosclerotic Disease
Revision of Arteriovenous Shunt for Renal Dialysis
Ruptured Aortic Aneurysm
Secondary Hypertension
Thoracoabdominal Aortic Aneurysm
Thromboendarterectomy or Excision of Infected Graft
Thrombosis
Transient Ischemic Attack (TIA)
Varicose Vein Procedure
Varicose Veins
Vascular Disease
Vascular Duplex Ultrasonography and Plethysmography
Vascular Surgical Procedure
Vascular Transcatheter Embolization
Venous Compression
Venous Embolism and Thrombosis
Venous Insufficiency
Video-Assisted Thoracoscopic Surgery (VATS) or Thoracotomy

About Me

Biography

Dr. Mark Brennan, DO is a general surgery specialist in Johnson City, NY and has been practicing for 25 years. He graduated from Philadelphia College Of Osteopathic Medicine in 1994 and specializes in general surgery and vascular surgery.

Specialties

  • General Surgery
  • Vascular Surgery

Board Certifications

  • General Surgery
  • General Vascular Surgery

Education

1994
Philadelphia College Of Osteopathic Medicine
Medical School
1994

Dr. Brennan's Reviews

Likelihood to recommend Dr. Brennan

3.6

Based on 17 reviews

5 Stars
64.70588235294117%
(11)
4 Stars
0%
(0)
3 Stars
0%
(0)
2 Stars
5.882352941176471%
(1)
1 Star
29.41176470588235%
(5)

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Average Wait Time
  • 10 – 15 minutes
Dr. Brennan's Performance
  • Trustworthiness
  • Explains condition(s) well
  • Answers questions
  • Time well spent
Office & Staff Performance
  • Scheduling
  • Office environment
  • Staff friendliness
What People Say About Dr. Mark Brennan, DO
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I, myself, looked through Dr. Brennan's reviews to see if others recommended him as well before my surgery so I decided to write my own review. Dr. Brennan performed a scheduled cholecystectomy (gall bladder removal) for me and it could not have gone any better! I was so nervous/scared/anxious as...Read More
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Horrible. Don't go to him!! Did a junk by-pass with artificial vein which caused massive infection. Then gave up on the leg. Didn't care. Leg saved by another surgeon, not UHS based!
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Over the Christmas holidays my husband became ill with what we thought were heart issues.Fortunetly this wasn't the case. It was gallbladder problems. Dr. Brennan didn't hesitate and insisted the surgery be done on Christmas Day. His bedside manner was personable and his surgical skill enabled my...Read More
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Dr. Brennan is compassionate, courteous and able to answer all my questions and concerns. I am glad he was the surgeon chosen by my team of doctors. Thank you, Dr. Brennan and The Lord Bless you. I am unable to answer three of four questions in the first part below as I was treated by Dr....Read More
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Doctor Brennan is a wonderful and caring doctor. He saved my dad's life on October 10, 2015. My dad was rushed to surgery for an emergency abdominal aortic aneurysm. His aneurysm was beyond the point of a minor repair and we were told the risk of him NOT surviving was great. While in surgery the...Read More
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Locations

Insurance accepted

Accepted insurance can change. Please double-check when making an appointment.

Aetna
Aetna HMO
Choice Plus POS II
Blue Cross Blue Shield
Blue Card PPO
Capital District Physician's Health Plan (CDPHP)
Capital District Physician's Health Plan (CDPHP) HMO
Cigna
Cigna PPO
Open Access Plus
Empire Blue Cross Blue Shield
Empire Blue Cross Blue Shield HMO
Excellus BlueCross BlueShield
Excellus BlueCross BlueShield PPO
Humana
Choice Care PPO
MVP Health Care
MVP Health Care PPO