Provider records sourced from NPPES (CMS National Plan & Provider Enumeration System). Data current as of August 10, 2026.
NPIDirectory

John E Fassler, MD

Individual provider Nephrology Physician · NPI 1891798757

John E Fassler, MD is a Nephrology in Rock Hill, South Carolina. Graduated from Ohio State University College of Medicine in 1991, 35 years ago. Practices with Nephrology Associates PA, an 11-clinician group, works from 2 locations and accepts Medicare assignment. Licensed in South Carolina.

Years since qualifying
35
Trained at
Ohio State University College of Medicine
Licensed in
SC
In the registry since
2005
What do these letters mean?
MD — Doctor of Medicine
A physician who completed allopathic medical school.

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Practice location Address checks out

1436 Riverchase Blvd
Rock Hill, SC 29732-1777
Phone: (803) 329-2636
Fax: (803) 329-2184
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Pin is approximate — placed at the ZIP-code centre, not the exact door.

Additional practice locations (1)

  • 322 S Main St, Lancaster, SC 29720-2437 — (803) 329-2636

Specialties & licences

Nephrology Physician (primary) Taxonomy 207RN0300X · Licence 19767 (SC)

Record details

NPI number1891798757
Entity typeIndividual (Type 1)
GenderMale
Credentials MD
Sole proprietorNo
NPI enumeratedMay 24, 2005
Last updated in NPPESFebruary 5, 2026
Certification dateFebruary 5, 2026

Medicare enrollment

From the CMS Doctors & Clinicians file — this clinician is enrolled in Medicare.

Medicare specialtyNEPHROLOGY
Also practisesINTERNAL MEDICINE
Medical schoolOHIO STATE UNIVERSITY COLLEGE OF MEDICINE
Graduated 1991 (35 years in practice)
Group practice Nephrology Associates Pa — 11 clinicians
Accepts Medicare assignment Yes — accepts the Medicare-approved amount
Practice locations2 on file with Medicare

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