Accepting patients
Affiliated with a Castle Connolly Top Hospital
Who is Dr. Grandas, Vascular Surgeon in Knoxville, TN?
Dr. Oscar Grandas, MD is a Vascular Surgeon, who primarily practices in Knoxville, TN with 2 additional practice locations. He is board certified. Dr. Grandas graduated from Faculty of Medicine National University of Colombia and completed his residency at Washington Hospital Center Program. Dr. Grandas is fluent in English and Spanish, and is currently seeing new patients. Dr. Grandas’s practice accepts Medicare, UnitedHealthcare, Aetna, Cigna and other major insurance plans. To book an appointment or to confirm insurance options, please call Dr. Grandas’s office at (865) 305-8040.
What are Areas of Expertise for Dr. Grandas?
Dr. Oscar Grandas, MD is a highly-rated, board-certified Vascular Surgeon 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. Grandas empowers patients to confidently navigate their health journey, specializing in Minimally Invasive Surgery, or comprehensive wellness support. Serving the Knoxville/TN community, Dr. Grandas is dedicated to enhancing lives through expert, patient-centered care.
Where did Dr. Grandas go to medical school and complete their residency?
Fellowship: Transplantation Surgery, Washington Hospital Center, Washington, D.C. USA | Vascular Surgery, University of Tennesse Medical Center at Knoxville, Knoxville, TN USA | Washington Hospital Center, University of Tennessee Medical Center | Washington Hospital Center & The University of Tennessee Medical Center at Knoxville
Residency: Washington Hospital Center Program
Medical School: Faculty of Medicine National University of Colombia | Universidad Nacional de Colombia Facultad de Medicina
Is Dr. Grandas board certified as a Vascular Surgeon?
Yes, Dr. Oscar Grandas, MD is board certified by the American Board of Surgery , American Board of Surgery since 1998, American Board of Surgery since 2002
What languages does Dr. Grandas speak?
Dr. Grandas and their clinical team can communicate with patients in the following languages:
English
Spanish
What conditions does Dr. Grandas treat?
As a Vascular Surgeon, Dr. Grandas 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. Grandas. 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
- End-Stage Kidney Disease from High Blood Pressure
- Kidney Failure
- Chronic Kidney Disease (CKD)
- Helping Your Child Adapt to Life with Chronic Kidney Disease
- Chronic Kidney Disease
- High Blood Pressure
- ESRD
- End-Stage Renal Failure
- Hypertensive End-Stage Renal Disease
- Kidney Failure due to High Blood Pressure
- Stage 5 CKD from Hypertension
ICD-10 Codes:
- N186: End stage renal disease
- I120: Hypertensive chronic kidney disease with stage 5 chronic kidney disease or end stage renal disease
Also known as:
- Having a Kidney Transplant
- Kidney Transplantation
- Kidney Transplant
- Renal transplant
- Kidney replacement surgery
- Post-kidney transplant
ICD-10 Codes:
- Z940: Kidney transplant status
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
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:
- Carotid Artery Disease
- Carotid Stenosis
- Blocked Carotid Artery
- Neck Artery Disease
- Carotid Artery Narrowing
ICD-10 Codes:
- I6523: Occlusion and stenosis of bilateral carotid arteries
Also known as:
- Other problems with blood vessel devices
- Vascular device complications
- Blood vessel implant issues
- Prosthetic vascular device problems
- Vascular graft complications
ICD-10 Codes:
- T82898A: Other specified complication of vascular prosthetic devices, implants and grafts, initial encounter
What procedures does Dr. Grandas perform?
As a Vascular Surgeon, Dr. Grandas 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. Grandas. 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:
- 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:
- 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:
- 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:
- Arteriovenous Fistula Creation (Upper Arm)
- Basilic Vein Transposition for Dialysis Access
- AV Fistula Surgery
- Cephalic Vein Transposition
- Dialysis Access Creation
- AV Fistula Creation
- Basilic Vein Fistula
- Dialysis Access Fistula
- Upper Arm AV Fistula
CPT Codes:
- 36818: Arteriovenous anastomosis, open; by upper arm cephalic vein transposition
- 36819: Arteriovenous anastomosis, open; by upper arm basilic vein transposition
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:
- 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:
- 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:
- Clearing Blocked Dialysis Access with Balloon and Clot Removal
- Dialysis Access Angioplasty and Stenting
- Dialysis Graft Thrombectomy
- Dialysis Fistula Angioplasty
- Dialysis Access Declotting
- Peripheral Dialysis Segment Repair
- Dialysis Fistula Repair
- Dialysis Graft Stenting
- Peripheral Dialysis Circuit Intervention
CPT Codes:
- 36905: Percutaneous transluminal mechanical thrombectomy and/or infusion for thrombolysis, dialysis circuit, any method, including all imaging and radiological supervision and interpretation, diagnostic angiography, fluoroscopic guidance, catheter placement(s), and intraprocedural pharmacological thrombolytic injection(s); with transluminal balloon angioplasty, peripheral dialysis segment, including all imaging and radiological supervision and interpretation necessary to perform the angioplasty
- 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:
- Revision of Arteriovenous (AV) Fistula
- AV fistula repair
- Dialysis graft revision
- Open AV fistula revision
CPT Codes:
- 36832: Revision, open, arteriovenous fistula; without thrombectomy, autogenous or nonautogenous dialysis graft (separate procedure)
Also known as:
- Removal of Abdominal Catheter
- Removal of Tunneled Central Venous Catheter
- Intraperitoneal catheter removal
- Tunneled catheter extraction
- Peritoneal dialysis catheter removal
- Central Line Removal
- Tunneled Catheter Extraction
- Venous Access Device Removal
CPT Codes:
- 49422: Removal of tunneled intraperitoneal catheter
- 36589: Removal of tunneled central venous catheter, without subcutaneous port or pump
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:
- Selective Artery Catheter Placement
- Arterial Catheterization
- Vascular Catheter Placement
- Diagnostic Angiography Catheter
CPT Codes:
- 36246: Selective catheter placement, arterial system; initial second order abdominal, pelvic, or lower extremity artery branch, within a vascular family
Also known as:
- Fistula Ligation or Banding
- AV Fistula Closure
- Fistula Banding
- Angioaccess Revision
CPT Codes:
- 37607: Ligation or banding of angioaccess arteriovenous fistula
Also known as:
- Brachial Plexus Nerve Block
- Shoulder Nerve Injection
- Arm Pain Injection
- Imaging-Guided Nerve Block
CPT Codes:
- 64415: Injection(s), anesthetic agent(s) and/or steroid; brachial plexus, including imaging guidance, when performed
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
Does Dr. Grandas accept my insurance?
Dr. Grandas accepts most major insurance plans. Important: Please call our office at (865) 305-8040 before your appointment to verify that your specific plan and network are accepted.
What insurance plans does Dr. Grandas accept in Knoxville, TN?
Dr. Grandas in Knoxville, TN accepts plans from many carriers. While this list is updated regularly, it is not a guarantee of coverage.
Top Insurances
All Other Third Party
Blue Cross and Blue Shield of North Carolina
Blue Cross Blue Shield of Michigan
Cambia (Regence)
Carpenters Funds Administrative Office (CA)
CVS Health (formerly Aetna)
Express Scripts
Medicare
State of Tennessee
UnitedHealthcare
View All Insurances
Where is Dr. Grandas' office located?
Dr. Oscar Grandas' Primary Practice
1924 Alcoa Hwy # U56
Knoxville, TN 37920
(865) 305-8040
What is Dr. Grandas's NPI number?An National Provider Identifier (NPI) is a unique ID number that identifies doctors and healthcare providers nationwide.
Dr. Grandas's National Provider Identifier (NPI) number is 1366550014.
What common questions do patients ask about Dr. Grandas?
Here are answers to patients Frequently Asked Questions (FAQ’s) about Dr. Grandas
What is Dr. Oscar Grandas's specialty?
Dr. Grandas is a Vascular Surgeon near Knoxville, TN. A vascular surgeon specializes in the management of surgical disorders related to blood vessels, excluding those of the heart and intracranial vessels. Contact Dr. Grandas to book an appointment today.
Is this Dr. Oscar Grandas affiliated with a ranked Castle Connolly Top Hospital?
Yes, Dr. Grandas is affiliated with The University of Tennessee 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 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 Oscar Grandas accepting new patients in Knoxville, TN?
Yes, Dr. Oscar Grandas is accepting new patients at this time.
Does Dr. Oscar Grandas offer online booking?
Please contact Dr. Grandas's office at (865) 305-8040 for information about online booking, telehealth, or to schedule an appointment.
How can I make an appointment with Oscar Grandas?
Please contact Dr. Grandas's office at (865) 305-8040 for information regarding telehealth appointment availability or for scheduling assistance.
Which board certifications does Dr. Oscar Grandas have?
Dr. Oscar Grandas is certified by the American Board of Surgery.
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