Charles Effiong, MD
Internal Medicine Physician · Charleston, SC
Charles Effiong, MD is an internal medicine physician with a practice address in Charleston, South Carolina, and NPI 1487604757, issued on May 10, 2006. Check the license (South Carolina 19174, as entered in NPPES) on the South Carolina Board of Medical Examiners; the Medicare figures below come from public CMS files.
- Name
- Charles Effiong
- Credential
- MD
- Primary taxonomy
- Internal Medicine Physician 207R00000X
- License number
- 19174 SC
Self-reported in NPPES; status is on the state search - Practice location
- 51 Nassau St, Charleston, SC 29403
- Phone
- (843) 722-4112
- Enumerated
- May 10, 2006
- Record last updated
- Jul 21, 2015 (not updated in 11 years: call before relying on the address or phone)
- Fax
- (843) 577-8960
- Medicaid ID
- 191740 SC
- Medicare enrollment
- Enrolled (PECOS I20040708000013); accepts Medicare assignment
- Entity
- Type 1 · individual
8 nearest internal medicine physician records → All 1,881 in South Carolina → Look up another NPI →
Also registered at 51 Nassau St
A shared address usually means a shared clinic or building; it does not show who employs whom.
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Verify Charles Effiong in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersSouth Carolina Board of Medical Examiners
Search for license 19174Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
2.2 times the Medicare Part D claims of the average internal medicine physician in 2024
7,075 Medicare Part D claims for 575 beneficiaries, against an average of 3,176 among the 108,855 providers of this specialty who prescribed in Part D. Brand-name drugs were 16% of claims. 237 claims were for opioids.
Most prescribed
- Amlodipine Besylate711 claims
- Atorvastatin Calcium358 claims
- Lisinopril268 claims
- Pravastatin Sodium218 claims
- Jardiance203 claims
- Omeprazole198 claims
Source: CMS Medicare Part D Prescribers by Provider and Drug, 2024 (data.cms.gov). Part D covers prescriptions for Medicare patients only; drugs with fewer than 11 claims are not published.
Industry payments in 2024: $32.01
1 payment: food and beverage; the largest payer was Boehringer Ingelheim Pharmaceuticals, Inc. The 50,334 providers of this specialty with any payment received $1,303.06 on average. Payments are reported by manufacturers, not by the provider, and are not a sign of wrongdoing.
Source: CMS Open Payments, program year 2024 (openpaymentsdata.cms.gov); average among providers of this specialty with at least one payment.
Bills Medicare through one group practice
- Fetter Health Care Network IncMoncks Corner, SC
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
Charles Effiong among 1,881 internal medicine physician records in South Carolina
Charles Effiong, MD is one of 1,881 internal medicine physician records with a practice address in South Carolina. 81% of them appear in a Medicare file (Part D prescribing, MIPS, Open Payments or Medicare group billing); this one does. Its NPI, issued in 2006, is newer than 7% of them.
- NPI issued2006 · 7% of these records are older, 58% newer
- In a Medicare fileYes · 81% of these records are
- In the CMS Doctors and Clinicians fileYes · 60% of these records are
- Graduated1984 · median 2006 among the 1,119 with a school on file
- Record last updated2015 · 46% of these records were not updated in five years or more
Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 207R00000X and a South Carolina practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
427 internal medicine physician records list a practice address in Charleston
They are 427 of the 10,840 NPPES records with a practice address in Charleston, and 1,881 internal medicine physician records in South Carolina.
All 1,881 in South Carolina → Every provider in Charleston → Internal Medicine Physician nationwide →
The 8 internal medicine physician records with the nearest ZIP codes
- Erika Blank, MDCharleston, SC 294031659361756
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- Patrick Brown, MDCharleston, SC 294031114542495
- Howard Evert, MDCharleston, SC 294031871567768
- Arica Gregory, MDCharleston, SC 294031578256962
- Maryellen Kyle, MDCharleston, SC 294031184680928
- General Little, M.D.Charleston, SC 294031588870075
- Ojo Oladimeji, MDCharleston, SC 294031427065291
Common questions
What is Charles Effiong, MD's NPI number?
Charles Effiong, MD's National Provider Identifier (NPI) is 1487604757, issued on May 10, 2006. An NPI identifies a provider in billing; it is not a license.
Where is Charles Effiong, MD located?
The NPPES record lists a practice address at 51 Nassau St, Charleston, SC, 29403. Phone: (843) 722-4112. Providers update this record themselves, so call before visiting.
How can I verify Charles Effiong, MD's license?
NPPES lists South Carolina license number 19174, as entered by the provider. Search the South Carolina Board of Medical Examiners at https://verify.llronline.com/LicLookup/Med/Med.aspx?div=22. The NPPES record confirms identity only; the state search shows license status, expiration and public orders.
How much does Charles Effiong, MD prescribe under Medicare Part D?
In 2024, Charles Effiong, MD had 7,075 Medicare Part D claims for 575 beneficiaries; the average among internal medicine physician prescribers was 3,176. Part D covers Medicare prescriptions only.
Source: CMS National Plan and Provider Enumeration System (NPPES), file of Aug 9, 2026 (NPPES files on CMS.gov); NUCC Health Care Provider Taxonomy. Medicare files from data.cms.gov. An NPI identifies who bills; it is not a license.
Figures on PlainDoctor are read from the federal files each page names (CMS NPPES, Medicare Part D, MIPS, Open Payments; the HHS-OIG exclusion list only as counts) and from Census population estimates, with the file date shown beside them. See our editorial standards & corrections policy, the methodology behind these numbers, or report a data error. Data current as of Aug 9, 2026.