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

Internal Medicine

Mary A. Oyerokun, MD

Works at hospitals in Cincinnati, OH · Ohio

Summary

Dr. Mary A. Oyerokun, MD is an internal medicine doctor at 2139 Auburn Ave, Cincinnati, OH 45219. Phone: (513) 585-2000. Accepts Medicare assignment. In 2024, Mary A. Oyerokun had 407 Original Medicare patients and 1,487 services. NPI 1245610393. 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.

  • Specialty: Internal medicine doctor (Medicare lists Internal Medicine)
  • Address: 2139 Auburn Ave, Cincinnati, OH 45219 · Directions
  • Phone: (513) 585‑2000
  • Medicare: Accepts Medicare assignment
  • Hospital: Christ Hospital
  • Group practice: The Christ Hospital Medical Associates, LLC
  • Medical school: graduated 2008 (18 years since medical school)
  • Gender (as listed): Female

From official Medicare data

This page shows what Medicare's official clinician data says about Mary A. Oyerokun, 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 Mary A. Oyerokun accept Medicare assignment?
Yes. Medicare's clinician data says Mary A. Oyerokun 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 Mary A. Oyerokun see?
In 2024, CMS data shows 407 Original Medicare patients and 1,487 services for Mary A. Oyerokun. This counts Original Medicare only and measures volume, not quality.
What is Mary A. Oyerokun's NPI number?
1245610393. 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 Mary A. Oyerokun, 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 patients407
Services billed to Medicare1,487
Different services or procedures14
Participating Medicare providerYes
Average age of these patients82

Most frequent services

  1. Subsequent hospital care with moderate levelof medical decision making, if using time, at least 35 minutes (99232)502 services
  2. Subsequent hospital care with moderate levelof medical decision making, if using time, at least 50 minutes (99233)287 services
  3. Hospital discharge day management, more than 30 minutes (99239)233 services
  4. Initial hospital care with moderate level of medical decision making, if using time, at least 75 minutes (99223)195 services
  5. Subsequent hospital care with straightforward or low level of medical decision making, per day, if using time, at least 25 minutes (99231)135 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 cholesterol75%
  • Arthritis70%
  • Heart failure59%
  • Ischemic heart disease57%
  • Chronic kidney disease56%

Hospitals where Mary A. Oyerokun works

Medicare's Facility Affiliation Data lists Mary A. Oyerokun 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.

  • Christ HospitalCincinnati, OH · Acute Care Hospital · Medicare rating: 5 of 5 stars · Emergency services: listed by Medicare · CCN 360163

Practice locations

Addresses where Mary A. Oyerokun is enrolled with Medicare (CMS data updated October 2, 2026).

Group practices

Medicare enrollment lists Mary A. Oyerokun as a member of this group (CMS data updated October 2, 2026).

  • The Christ Hospital Medical Associates, LLC274 clinicians in the group

Specialties

Find other Internal Medicine doctors in Ohio →

Other internal medicine doctors in Cincinnati

Clinicians with the same Medicare primary specialty in Cincinnati, OH — not a recommendation.

All internal medicine doctors in Cincinnati →

Other clinicians in The Christ Hospital Medical Associates, LLC

Medicare enrollment lists these clinicians in the same group practice — not a recommendation.

Clinician information

CredentialMD
Graduation year2008 (18 years since medical school)
Gender (as listed)Female
Medicare assignmentAccepts (Medicare-approved amount as full payment)
NPI (National Provider Identifier)1245610393
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