Opeyemi Ayeni, M.D
NPI 1831541325 · Internal Medicine Physician · Chesterfield, MO
Enrolled with Medicare as Practitioner - Hospitalist · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Opeyemi Ayeni, M.D is a Internal Medicine Physician provider in Chesterfield, MO (NPI 1831541325).
Provider details
- NPI number
- 1831541325
- Entity type
- Individual
- Primary specialty
- Internal Medicine PhysicianAllopathic & Osteopathic Physicians
- Credential
- M.D
- Sex
- Female
- Sole proprietor
- No
- License
- 2019022222 (MO)
Specialties & taxonomies
Allopathic & Osteopathic Physicians
Allopathic & Osteopathic Physicians
Profile Score
A profile completeness & documented-activity index — NOT a quality, outcomes, or patient-satisfaction rating.
- Registry tenure28% of score
9 yrs in NPPES registry
- Profile completeness28% of score
100% of core fields populated
- Practice footprint17% of score
1 documented practice location
- Medicare service volume (vs. specialty peers)28% of score
600 Medicare services, 2024 (ranked within specialty)
Medicare volume is ranked against active providers in the same specialty. Signals a provider has no public data for (e.g. Medicare claims) are left out of the score entirely — never counted as zero — so providers without that data are not penalized. See the full formula and weights in our methodology.
What this provider does (Medicare)
Based on Medicare fee-for-service claims, 2024; not all care is captured.
| Service (HCPCS) | Medicare services | Typical Medicare-allowed (2024) |
|---|---|---|
| Subsequent Hospital Care With Moderate Levelof Medical Decision Making, If Using Time, at Least 50 Minutes99233 | 229 | $107 |
| Subsequent Hospital Care With Moderate Levelof Medical Decision Making, If Using Time, at Least 35 Minutes99232 | 199 | $71 |
| Hospital Discharge Day Management, More Than 30 Minutes99239 | 114 | $106 |
| Subsequent Hospital Care With Straightforward Or Low Level of Medical Decision Making, Per Day, If Using Time, at Least 25 Minutes99231 | 34 | $46 |
| Initial Hospital Care With Moderate Level of Medical Decision Making, If Using Time, at Least 75 Minutes99223 | 24 | $160 |
Typical Medicare-allowed amounts for these services range $46–$160 (2024). The Medicare-allowed amount is what Medicare recognizes for a service under fee-for-service — a reference figure for 2024, and not what you would be billed. Medicare Part B covers roughly an eighth of all NPIs (65+ skew); services with fewer than 11 beneficiaries are suppressed by CMS. Source: CMS Medicare Physician & Other Practitioners, by Provider & Service.
What this provider prescribes (Medicare Part D)
Top drugs by Medicare Part D claim volume, 2024 · 19 distinct drugs on file.
| Drug | Part D claims (2024) | Beneficiaries |
|---|---|---|
| Apixabanbrand: Eliquis | 64 | 23 |
| Atorvastatin Calcium | 46 | 25 |
| Prednisone | 31 | 22 |
| Furosemide | 29 | 19 |
| Pantoprazole Sodium | 28 | 20 |
| Metoprolol Succinate | 26 | 18 |
| Albuterol Sulfate |
Practice location
Mailing address
Registry dates
- Enumerated
- 2016-07-07
- Last updated
- 2025-02-13
- Certified
- 2025-02-13
Frequently asked questions
- What is Opeyemi Ayeni's NPI number?
- Opeyemi Ayeni's National Provider Identifier (NPI) is 1831541325, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Opeyemi Ayeni's specialty?
- Opeyemi Ayeni is listed in the NPPES registry with a primary specialty of Internal Medicine Physician (Allopathic & Osteopathic Physicians).
- Where is Opeyemi Ayeni located?
- Opeyemi Ayeni's practice location on file with NPPES is 15740 S Outer 40 Rd, Chesterfield, MO 63017-2004.
- What is Opeyemi Ayeni's phone number?
- The practice phone number listed in the NPPES registry for Opeyemi Ayeni is (636) 735-4750.
- Does Opeyemi Ayeni accept Medicare?
- Opeyemi Ayeni is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Opeyemi Ayeni's NPI active?
- Yes — Opeyemi Ayeni's NPI (1831541325) is active in the NPPES registry as of the last update on 2025-02-13.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.