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Hospitalist

Olakunle D. Ajanaku, MD

Works at hospitals in Okmulgee, OK · Muskogee, OK · Tulsa, OK … · Oklahoma

Summary

Dr. Olakunle D. Ajanaku, MD is a hospitalist at 300 Rockefeller Dr, Muskogee, OK 74401. Phone: (918) 684-2187. Accepts Medicare assignment. In 2024, Olakunle D. Ajanaku had 910 Original Medicare patients and 1,040 services. NPI 1740270305. 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 Olakunle D. Ajanaku, 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 Olakunle D. Ajanaku accept Medicare assignment?
Yes. Medicare's clinician data says Olakunle D. Ajanaku 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 Olakunle D. Ajanaku see?
In 2024, CMS data shows 910 Original Medicare patients and 1,040 services for Olakunle D. Ajanaku. This counts Original Medicare only and measures volume, not quality.
What is Olakunle D. Ajanaku's NPI number?
1740270305. 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 Olakunle D. Ajanaku, 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 patients910
Services billed to Medicare1,040
Different services or procedures10
Participating Medicare providerYes
Average age of these patients75

Most frequent services

  1. Initial hospital care with moderate level of medical decision making, if using time, at least 75 minutes (99223)755 services
  2. Initial hospital care with straightforward or low-level medical decision making, if using time, at least 55 minutes (99222)142 services
  3. Critical care, first 30-74 minutes (99291)110 services
  4. Smoking and tobacco use intensive counseling, 4-10 minutes (99406)21 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%
  • Anxiety61%
  • Arthritis58%
  • Depression54%
  • Heart failure53%

Hospitals where Olakunle D. Ajanaku works

Medicare's Facility Affiliation Data lists Olakunle D. Ajanaku 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 Olakunle D. Ajanaku is enrolled with Medicare (CMS data updated October 2, 2026).

Group practices

Medicare enrollment lists Olakunle D. Ajanaku as a member of this group (CMS data updated October 2, 2026).

  • Warren Clinic Inc883 clinicians in the group

Specialties

Find other Hospitalist doctors in Oklahoma →

Other hospitalists in Muskogee

Clinicians with the same Medicare primary specialty in Muskogee, OK — not a recommendation.

All hospitalists in Muskogee →

Other clinicians in Warren Clinic Inc

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

Clinician information

CredentialMD
Graduation year1982 (44 years since medical school)
Gender (as listed)Male
Medicare assignmentAccepts (Medicare-approved amount as full payment)
NPI (National Provider Identifier)1740270305
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