Medical emergency?Emergency? Call 911. Nearest emergency roomsNearest ERs

Internal Medicine

Eni C. Okonofua, MD

Works at hospitals in Charleston, SC · South Carolina

Summary

Dr. Eni C. Okonofua, MD is an internal medicine doctor at 5390 Dorchester Rd, North Charleston, SC 29418. Phone: (843) 552-3099. Accepts Medicare assignment. In 2024, Eni C. Okonofua had 154 Original Medicare patients and 1,871 services. NPI 1295770436. Source: CMS National Downloadable File, updated October 2, 2026; CMS Facility Affiliation Data, updated October 2, 2026; CMS Medicare Physician & Other Practitioners, data year 2024.

From official Medicare data

This page shows what Medicare's official clinician data says about Eni C. Okonofua, joined by NPI number (data updated October 2, 2026). It is not a recommendation or a rating. Call the office or hospital to confirm before you go.

In a medical emergency, call 911.

Quick answers

Does Eni C. Okonofua accept Medicare assignment?
Yes. Medicare's clinician data says Eni C. Okonofua accepts Medicare assignment (the Medicare-approved amount as full payment for covered services), as of October 2, 2026. Ask the office to confirm before your visit.
How many Medicare patients does Eni C. Okonofua see?
In 2024, CMS data shows 154 Original Medicare patients and 1,871 services for Eni C. Okonofua. This counts Original Medicare only and measures volume, not quality.
What is Eni C. Okonofua's NPI number?
1295770436. The NPI (National Provider Identifier) is the clinician's permanent federal ID; you can look it up in the official NPI Registry.

Medicare activity in 2024

Official CMS public-use data for Eni C. Okonofua, data year 2024 (released May 21, 2026). It covers Original Medicare (fee-for-service) patients only, not Medicare Advantage or other insurance. It shows volume, not quality or outcomes. CMS hides any count of 10 or fewer patients.

Original Medicare patients154
Services billed to Medicare1,871
Different services or procedures19
Participating Medicare providerYes
Average age of these patients66

Most frequent services

  1. Testing for presence of drug, by chemistry analyzers (80307)793 services
  2. Established patient office or other outpatient visit with low level od decision making, if using time, 20 minutes or more (99213)617 services
  3. Established patient office or other outpatient visit with moderate level of decision making, if using time, 30 minutes or more (99214)327 services
  4. Annual wellness visit, includes a personalized prevention plan of service (pps), subsequent visit (G0439)43 services
  5. Influenza vaccine, inactivated (90653)15 services

Chronic conditions among these patients

Share of this clinician’s Original Medicare patients with each condition, as published by CMS (it describes the patients, not the care given).

  • High blood pressure75%
  • High cholesterol53%
  • Arthritis36%
  • Diabetes32%
  • Anxiety23%
  • Chronic kidney disease21%

Hospitals where Eni C. Okonofua works

Medicare's Facility Affiliation Data lists Eni C. Okonofua at these hospitals (updated October 2, 2026). Each hospital page shows its address, phone, emergency services, Medicare rating and all its clinicians. Star rating and emergency services: Hospital General Information (CMS), data updated October 26, 2026.

Practice locations

Addresses where Eni C. Okonofua is enrolled with Medicare (CMS data updated October 2, 2026).

Specialties

Find other Internal Medicine doctors in South Carolina →

Other internal medicine doctors in North Charleston

Clinicians with the same Medicare primary specialty in North Charleston, SC — not a recommendation.

All internal medicine doctors in North Charleston →

Clinician information

CredentialMD
Graduation year1983 (43 years since medical school)
Gender (as listed)Male
Medicare assignmentAccepts (Medicare-approved amount as full payment)
NPI (National Provider Identifier)1295770436
CorrectionsReport 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

  1. Facility Affiliation Data — Centers for Medicare & Medicaid Services (CMS), data updated October 2, 2026, retrieved October 29, 2026
  2. Hospital General Information — CMS, data updated October 26, 2026, retrieved November 13, 2026
  3. National Downloadable File (Doctors and Clinicians) — CMS, data updated October 2, 2026, retrieved October 29, 2026
  4. Medicare Physician & Other Practitioners - by Provider — CMS, data year 2024, released May 21, 2026; Medicare Physician & Other Practitioners - by Provider and Service
  5. NPI Registry — U.S. Department of Health and Human Services (NPPES), the clinician’s official record
  6. Medicare Care Compare — official Medicare tool to look up clinicians