Quick answers
- Which hospitals does Gautham Viswanathan work at?
- Medicare's official clinician data lists Gautham Viswanathan at 3 hospitals: Piedmont Hospital, Inc, Piedmont Mountainside Hospital Inc and Wellstar Kennestone Regional Medical Center. This is where the clinician works or has privileges; call the hospital to confirm.
- Where does Gautham Viswanathan see patients?
- Medicare's clinician data lists 1 practice location in Atlanta, GA. Call before your visit to confirm the address.
- What is Gautham Viswanathan's specialty?
- Medicare lists Nephrology as the primary specialty, and also Internal Medicine.
- Does Gautham Viswanathan accept Medicare assignment?
- Yes. Medicare's clinician data says Gautham Viswanathan accepts Medicare assignment (the Medicare-approved amount as full payment for covered services), as of 2026-10-02. Ask the office to confirm before your visit.
- Does Gautham Viswanathan offer telehealth?
- Medicare's clinician data says Gautham Viswanathan offers telehealth services. Ask the office which visits can be done by video or phone.
- What is the phone number for Gautham Viswanathan?
- (470) 599-9492, as listed in official Medicare / NPI Registry data.
- What is Gautham Viswanathan's NPI number?
- 1427194257. The NPI (National Provider Identifier) is the clinician's permanent federal ID; you can look it up in the official NPI Registry.
Hospitals where Gautham Viswanathan works
Medicare's Facility Affiliation Data lists Gautham Viswanathan at these hospitals (updated 2026-10-02). Each hospital page shows its address, phone, emergency services, Medicare rating and all its clinicians.
- Piedmont Hospital, IncAtlanta, GA · Acute Care Hospital · CCN 110083
- Piedmont Mountainside Hospital IncJasper, GA · Acute Care Hospital · CCN 110225
- Wellstar Kennestone Regional Medical CenterMarietta, GA · Acute Care Hospital · CCN 110035
Practice locations
Addresses where Gautham Viswanathan is enrolled with Medicare (CMS data updated 2026-10-02).
- 105 Collier Rd NW, Suite 3040Atlanta, GA 30309 (470) 599‑9492
Group practices
Medicare enrollment lists Gautham Viswanathan as a member of this group (CMS data updated 2026-10-02).
- Piedmont Nephrology and Internal Medicine, LLC4 clinicians in the group
Specialties
- Nephrologyprimary
- Internal Medicinealso
Other nephrologists in Atlanta
Clinicians with the same Medicare primary specialty in Atlanta, GA — not a recommendation.
Clinician information
| Credential | MD |
|---|---|
| Graduation year | 1998 |
| Gender (as listed) | Male |
| Medicare assignment | Accepts (Medicare-approved amount as full payment) |
| Telehealth | Offers telehealth services |
| NPI (National Provider Identifier) | 1427194257 |
| Corrections | Report an error or suggest an update → |
Most corrections must be made at the source: clinicians update their NPI Registry record (NPPES) and their Medicare enrollment (PECOS); this page follows the next data release.
Sources
- Facility Affiliation Data — Centers for Medicare & Medicaid Services (CMS), data updated 2026-10-02, retrieved 2026-10-29
- National Downloadable File (Doctors and Clinicians) — CMS, data updated 2026-10-02, retrieved 2026-10-29
- NPI Registry — U.S. Department of Health and Human Services (NPPES), the clinician’s official record
- Medicare Care Compare — official Medicare tool to look up clinicians