OLUWASEUN JOHNSON-AKEJU M.D.
NPI 1164558599
Anesthesiology in Boston, MA
About Oluwaseun Johnson-akeju M.d. NPPES
Official registry information on file with the National Plan and Provider Enumeration System.
OLUWASEUN JOHNSON-AKEJU M.D. (NPI 1164558599) is an individual anesthesiology provider in Boston, Massachusetts, licensed in Massachusetts (L-228639) and active in the NPI registry since February 2007. He is enrolled in Medicare PECOS, is affiliated with Brigham And Women's Hospital, and maintains a secondary practice location in Boston.
NPPES Registry Identity
Specialties & Licenses
Secondary Practice Location 1
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
Oluwaseun Johnson-akeju 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 Oluwaseun Johnson-akeju reassigns Medicare billing to 3 organizations. Each organization bills Medicare for the services this provider delivers there; the nearest is listed first.
Boston, MA 02114
- Reassigned Medicare billing, Massachusetts enrollment
- 6,234 clinicians in this Medicare group
Boston, MA 02114
- Reassigned Medicare billing, Massachusetts enrollment
- 6,360 clinicians in this Medicare group
Boston, MA 02115
- Reassigned Medicare billing, Massachusetts enrollment
- 4,574 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.
Hospital Affiliations CMS Care Compare
Hospitals where this provider delivers care, identified from recent Medicare claims and place-of-service records.
Brigham And Women's Hospital
Acute Care Hospitals · Boston, MAOther Providers at the Same Location NPPES 20
Providers registered at the same practice address, or within the immediate area, according to the NPPES registry.
BOSTON, MA 02114
BOSTON, MA 02114
BOSTON, MA 02114
BOSTON, MA 02114
BOSTON, MA 02114
BOSTON, MA 02114
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 Oluwaseun Johnson-akeju's NPI number?
The NPI number for Oluwaseun Johnson-akeju is 1164558599. It was assigned to this individual provider in the NPPES registry on February 27, 2007.
Where is Oluwaseun Johnson-akeju located?
Oluwaseun Johnson-akeju practices at Massachusetts General Hospital 55 Fruit Street, Boston, MA 02114. The listed phone number is (617) 726-3030.
What is Oluwaseun Johnson-akeju's specialty?
The primary specialty registered for this NPI is Anesthesiology with taxonomy code 207L00000X.
Is Oluwaseun Johnson-akeju enrolled in Medicare?
Yes. Oluwaseun Johnson-akeju 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 Oluwaseun Johnson-akeju's services?
According to the CMS Revalidation Reassignment List (October 2026 release), Oluwaseun Johnson-akeju reassigns Medicare benefits to 3 organizations: The General Hospital Corporation (Boston, MA), Massachusetts General Physicians Organization Inc (Boston, MA) and Brigham & Womens Physicians Organization Inc (Boston, MA). 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 Oluwaseun Johnson-akeju's services. Reassignment records can lag staffing changes; confirm current arrangements with the organization.
What insurance does Oluwaseun Johnson-akeju accept?
Health plans from Taro Health list Oluwaseun Johnson-akeju 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 Oluwaseun Johnson-akeju affiliated with any hospitals?
According to CMS data, Oluwaseun Johnson-akeju is affiliated with Brigham And Women's Hospital.
When was this NPI record last updated?
The NPPES record for Oluwaseun Johnson-akeju was last updated on December 19, 2024. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 22 months 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.
# Oluwaseun Johnson-Akeju, M.D. · NPI 1164558599
Anesthesiology physician in Boston, Massachusetts. Individual provider, active in the CMS NPPES registry since February 27, 2007.
## Identity
- **NPI:** 1164558599 (Entity type: Individual)
- **Enumerated:** February 27, 2007
- **Primary specialty:** Anesthesiology · taxonomy 207L00000X
- **State license:** L-228639 (Massachusetts)
- **Sole proprietor:** No
## Practice location
- **Address:** MASSACHUSETTS GENERAL HOSPITAL, 55 FRUIT STREET, Boston, MA 02114
- **Phone:** (617) 726-3030
## 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): The General Hospital Corporation (NPI 1023049236, Boston, MA); Massachusetts General Physicians Organization Inc (NPI 1801874573, Boston, MA); Brigham & Womens Physicians Organization Inc (NPI 1033535497, Boston, MA) · CMS Revalidation Reassignment List, October 2026 release
- **Medical school:** Other, class of 2006
## Record status
- **NPPES last updated:** December 19, 2024
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Source: [NPI Profile](https://npiprofile.com/npi/1164558599) · Data from the CMS NPPES public registry.