DR. OLAYIWOLA C OLAGBEGI M.D.
NPI 1912011255
Internal Medicine - Gastroenterology in Saint Louis, MO
About Dr. Olayiwola C Olagbegi M.d. NPPES
Official registry information on file with the National Plan and Provider Enumeration System.
DR. OLAYIWOLA C OLAGBEGI M.D. (NPI 1912011255) is an individual gastroenterology provider in Saint Louis, Missouri, licensed in Missouri (114046) and active in the NPI registry since August 2006. He is enrolled in Medicare PECOS, is affiliated with Alton Memorial Hospital, and maintains a secondary practice location in Edwardsville.
NPPES Registry Identity
Specialties & Licenses
Secondary Practice Location 1
Other Identifiers 2
Accepted Insurance
Medicare Participation & PECOS CMS
Medicare enrollment, assignment, billing reassignment, and ordering and referring status from CMS.
Medicare Enrollment Status
Enrolled in Medicare and accepts Medicare assignment
Dr. Olayiwola C Olagbegi M.d. is registered in PECOS and agrees to accept the Medicare-approved amount as full payment. Medicare patients are not billed beyond the standard deductible and coinsurance.
Medicare Billing Reassignments
3Medicare enrollment records show Olayiwola Olagbegi reassigns Medicare billing to 3 organizations. Each organization bills Medicare for the services this provider delivers there; the nearest is listed first.
Saint Louis, MO 63141
- Reassigned Medicare billing, Illinois and Missouri enrollments
- Also billed through NPI 1679503668 (Missouri)
- 507 clinicians in this Medicare group
Farmington, MO 63640
- Reassigned Medicare billing, Missouri enrollment
- 595 clinicians in this Medicare group
Cape Girardeau, MO 63701
- Reassigned Medicare billing, Missouri enrollment
- 470 clinicians in this Medicare group
Source: CMS Revalidation Reassignment List, October 2026 release. Reassignment records can lag staffing changes; confirm a current affiliation with the organization.
Areas of Expertise CMS Part B claims 9
Services this provider delivered to Medicare fee-for-service patients, from the CMS Medicare utilization data. Higher counts generally reflect more experience with a service; care delivered outside Medicare is not included.
Hospital Affiliations CMS Care Compare 3
Hospitals where this provider delivers care, identified from recent Medicare claims and place-of-service records.
Alton Memorial Hospital
Acute Care Hospitals · Alton, ILMissouri Baptist Medical Center
Acute Care Hospitals · Town And Country, MOChristian Hospital Northeast
Acute Care Hospitals · Saint Louis, MOPhysician Visit Costs CMS claims · ZIP area
Typical Medicare office-visit costs in the 63136 ZIP code area, from fee-for-service claims. These are area statistics, not this provider’s prices; actual charges vary by service and coverage.
Other Providers at the Same Location NPPES 5
Providers registered at the same practice address, or within the immediate area, according to the NPPES registry.
SAINT LOUIS, MO 63136
SAINT LOUIS, MO 63136
Frequently Asked Questions NPPES & CMS
Common questions about this NPI record, answered from the official NPPES registry and CMS datasets shown on this page.
What is Olayiwola Olagbegi's NPI number?
The NPI number for Olayiwola Olagbegi is 1912011255. It was assigned to this individual provider in the NPPES registry on August 17, 2006.
Where is Olayiwola Olagbegi located?
Olayiwola Olagbegi practices at 11155 Dunn Rd Ste 309E, Saint Louis, MO 63136. The listed phone number is (314) 953-8799.
What is Olayiwola Olagbegi's specialty?
The primary specialty registered for this NPI is Internal Medicine, specializing in Gastroenterology, with taxonomy code 207RG0100X.
Is Olayiwola Olagbegi enrolled in Medicare?
Yes. Olayiwola Olagbegi is registered in the Medicare PECOS system and accepts Medicare assignment, which means accepting the Medicare-approved amount as payment in full for covered services.
Which organizations bill Medicare for Olayiwola Olagbegi's services?
According to the CMS Revalidation Reassignment List (October 2026 release), Olayiwola Olagbegi reassigns Medicare benefits to 3 organizations: Fairview Heights Medical Group, Sc (Saint Louis, MO), Saint Francis Medical Center (Farmington, MO) and Southeast Missouri Hospital Physicians, LLC (Cape Girardeau, MO). Each reassignment is filed with Medicare on form CMS-855R, signed by both the clinician and the organization, and lets the organization bill Medicare and receive payment for Olayiwola Olagbegi's services. Reassignment records can lag staffing changes; confirm current arrangements with the organization.
What insurance does Olayiwola Olagbegi accept?
Health plans from Anthem Blue Cross and Blue Shield and UnitedHealthcare list Olayiwola Olagbegi as in-network in at least one marketplace plan. Coverage varies by plan and year; verify with the insurer or the provider before a visit.
Is Olayiwola Olagbegi affiliated with any hospitals?
According to CMS data, Olayiwola Olagbegi is affiliated with Alton Memorial Hospital, Missouri Baptist Medical Center and Christian Hospital Northeast.
When was this NPI record last updated?
The NPPES record for Olayiwola Olagbegi was last updated on January 11, 2023. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 3 years ago. If this record has changed at CMS more recently, you can request an on-demand re-check against the live CMS registry, directly from this page.
# Dr. Olayiwola C Olagbegi, M.D. · NPI 1912011255
Gastroenterology physician in Saint Louis, Missouri. Individual provider, active in the CMS NPPES registry since August 17, 2006.
## Identity
- **NPI:** 1912011255 (Entity type: Individual)
- **Enumerated:** August 17, 2006
- **Primary specialty:** Internal Medicine - Gastroenterology · taxonomy 207RG0100X
- **State license:** 114046 (Missouri)
- **Sole proprietor:** No
## Practice location
- **Address:** 11155 DUNN RD STE 309E, Saint Louis, MO 63136-6111
- **Phone:** (314) 953-8799
## Medicare
- **Medicare:** Enrolled (PECOS); accepts Medicare assignment
- **Ordering & referring:** eligible for Part B labs & imaging, durable medical equipment, home health, power mobility devices
- **Bills Medicare through:** 3 organizations under Medicare reassignment (form CMS-855R): Fairview Heights Medical Group, Sc (NPI 1811392210, Saint Louis, MO); Saint Francis Medical Center (NPI 1013585561, Farmington, MO); Southeast Missouri Hospital Physicians, LLC (NPI 1558311522, Cape Girardeau, MO) · CMS Revalidation Reassignment List, October 2026 release
- **Medical school:** Other, class of 1985
## Record status
- **NPPES last updated:** January 11, 2023
- **Other identifiers:** Other 100011347 (MO); Medicaid 209698901 (MO)
---
Source: [NPI Profile](https://npiprofile.com/npi/1912011255) · Data from the CMS NPPES public registry.