Provider records sourced from NPPES (CMS National Plan & Provider Enumeration System). Data current as of October 4, 2026.
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Charles Effiong, MD

Individual provider Nephrology Physician · NPI 1487604757

Charles Effiong, MD practises Internal Medicine in Charleston, South Carolina. Qualified in 1984, 42 years ago. Practices with Fetter Health Care Network Inc, a 29-clinician group and accepts Medicare assignment. Licensed in South Carolina.

Years since qualifying
42
Licensed in
SC
In the registry since
2006
Specialties on file
2
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

51 Nassau St
Charleston, SC 29403-5513 Not confirmed with CMS for 11 years — call before visiting
Phone: (843) 722-4112
Fax: (843) 577-8960
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Pin is approximate — placed at the ZIP-code centre, not the exact door.

Specialties & licences

Internal Medicine Physician (primary) Taxonomy 207R00000X · Licence 19174 (SC)
Nephrology Physician Taxonomy 207RN0300X · Licence 19174 (SC)

Record details

NPI number1487604757
Entity typeIndividual (Type 1)
GenderMale
Credentials MD
Sole proprietorNo
NPI enumeratedMay 10, 2006
Last updated in NPPESJuly 21, 2015

Medicare enrollment

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

Medicare specialtyINTERNAL MEDICINE
Also practisesNEPHROLOGY
Medical schoolOTHER
Graduated 1984 (42 years in practice)
Group practice Fetter Health Care Network Inc — 29 clinicians
Accepts Medicare assignment Yes — accepts the Medicare-approved amount
Practice locations4 on file with Medicare

Medicare patients and services, 2024

From the CMS Medicare Physician & Other Practitioners file for calendar year 2024. It counts Original Medicare patients only, so a practice that mostly sees Medicare Advantage or privately insured patients looks smaller here than it is.

Medicare patients37
Services billed 52 a service is one billed item, such as a visit, a test or a procedure
Average patient age73

Dollar amounts are not shown. What Medicare pays a practice is gross billings, before staff, premises and tax and including the cost of any drugs it administers, so it is not what a clinician earns.

Colleagues at Fetter Health Care Network Inc

Clinicians the CMS Doctors & Clinicians file lists under the same group practice. CMS counts 29 clinicians in the practice; 12 are shown here.

Other providers in Charleston