JF
28 Years of Experience
Accepting patients
Affiliated with a Castle Connolly Top Hospital
Who is Dr. Fassler, Nephrologist in Rock Hill, SC?
Dr. John Fassler, MD is a Nephrologist, who primarily practices in Rock Hill, SC with 1 additional practice location. He has been practicing for over 28 years and is board certified. Dr. Fassler graduated from Ohio State University / College of Medicine and completed his residency at Oh State Univ Hosp, Nephrology; Oh State Univ Hosp, Internal Medicine. Dr. Fassler is fluent in English, and is currently seeing new patients. Dr. Fassler’s practice accepts Medicare and other major insurance plans. To book an appointment or to confirm insurance options, please call Dr. Fassler’s office.
Where did Dr. Fassler go to medical school and complete their residency?
Residency: Oh State Univ Hosp, Nephrology; Oh State Univ Hosp, Internal Medicine | Ohio State University Hospitals | Ohio State University Hospital Program
Medical School: Oh State Univ Coll of Med, Columbus Oh | Ohio State University College of Medicine And Public Health,Columbus, Ohio, United States | Ohio State University / College of Medicine
Is Dr. Fassler board certified as a Nephrologist?
Yes, Dr. John Fassler, MD is board certified by the American Board of Internal Medicine
What languages does Dr. Fassler speak?
Dr. Fassler and their clinical team can communicate with patients in the following languages:
English
What conditions does a Nephrologist like Dr. Fassler typically treat?
As a Nephrologist, Dr. Fassler 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. Fassler. 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. Learn more about our claims-based healthcare methodology.
Also known as:
- End-Stage Kidney Disease
- Chronic Kidney Disease Stage 3b
- Chronic Kidney Disease, Stage 4 (Severe)
- Chronic Kidney Disease, Stage 3a
- Chronic Kidney Disease, Stage 3
- Kidney Failure
- Chronic Kidney Disease (CKD)
- Helping Your Child Adapt to Life with Chronic Kidney Disease
- Chronic Kidney Disease
- ESRD
- End-Stage Renal Failure
- CKD Stage 3b
- Moderate Chronic Kidney Disease
- CKD Stage 4
- Severe Chronic Kidney Disease
- CKD Stage 3a
- CKD Stage 3
ICD-10 Codes:
- N186: End stage renal disease
- N1832: Chronic kidney disease, stage 3b
- N184: Chronic kidney disease, stage 4 (severe)
- N1831: Chronic kidney disease, stage 3a
- N1830: Chronic kidney disease, stage 3 unspecified
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:
- High Blood Pressure
- Hypertension
- Primary Hypertension
- Essential Hypertension
ICD-10 Codes:
- I10: Essential (primary) hypertension
What procedures does a Nephrologist like Dr. Fassler typically perform?
As a Nephrologist, procedures performed by Dr. John Fassler may include:
- Dialysis
- Kidney and Urinary Perfusion Scan
- Kidney Biopsy
- Kidney Transplant
- Kidney Ultrasound
- Nephrology Consultation
- Nephrology Follow Up
- Peritoneal Dialysis
Please contact Dr. Fassler's office directly to confirm care for your specific procedure, for more information, or to schedule a consultation.
Does Dr. Fassler accept my insurance?
Dr. Fassler 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. Fassler accept in Rock Hill, SC?
Dr. Fassler in Rock Hill, SC 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 Blue Shield of South Carolina
Centene Corporation
Cigna Group
CVS Health (formerly Aetna)
Humana
Medicare
Molina Healthcare
State of South Carolina
UnitedHealth Group
View All Insurances
Where is Dr. Fassler's office located?
What is Dr. Fassler's NPI number?An National Provider Identifier (NPI) is a unique ID number that identifies doctors and healthcare providers nationwide.
Dr. Fassler's National Provider Identifier (NPI) number is 1891798757.
What common questions do patients ask about Dr. Fassler?
Here are answers to patients Frequently Asked Questions (FAQ’s) about Dr. Fassler
What is Dr. John Fassler's specialty?
Dr. Fassler is a Nephrologist near Rock Hill, SC.
What does a Nephrologist do?
An internist who manages disorders related to the kidneys, including high blood pressure, fluid and mineral balance, and dialysis for waste removal when kidney function is impaired. This specialist also collaborates with surgeons regarding kidney transplantation.
Is this Dr. John Fassler affiliated with a ranked Castle Connolly Top Hospital?
Yes, Dr. Fassler is affiliated with Musc Health Lancaster Medical Center, Atrium Health Pineville 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
When to see a Nephrologist?: Guides for symptoms, conditions, and treatments
Understand your symptoms and know when it’s time to see a Nephrologist. Explore 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 Fassler accepting new patients in Rock Hill, SC?
Yes, Dr. John Fassler is accepting new patients at this time.
Does Dr. John Fassler offer online booking?
Please contact Dr. Fassler's office for information about online booking, telehealth, or to schedule an appointment.
How can I make an appointment with John Fassler?
Please contact Dr. Fassler's office for information regarding telehealth appointment availability or for scheduling assistance.
Which board certifications does Dr. John Fassler have?
Dr. John Fassler is certified by the American Board of Internal Medicine.
Other Nephrologist Near Rock Hill, SC
RA
Nephrologist
Dr. Robert Adrah, MD is a Nephrologist, who primarily practices in Rock Hill, SC with 1 additional practice location.
Rock Hill, SC

Nephrologist
Dr. Douglas Nicholson, DO is a Nephrologist, who primarily practices in Rock Hill, SC with 1 additional practice location. He has been practicing for over 21 years and is board certified.
Rock Hill, SC
WB
Nephrologist
Dr. William Bixenman, MD is a Nephrologist, who primarily practices in Rock Hill, SC. He has been practicing for over 39 years and is board certified.
Rock Hill, SC