MICHAEL NWOSU M.D.
NPI 1659805158
Family Medicine in Temecula, CA
About Michael Nwosu M.d. NPPES
Official registry information on file with the National Plan and Provider Enumeration System.
MICHAEL NWOSU M.D. (NPI 1659805158) is an individual family medicine provider in Temecula, California, licensed in California (A166465) and active in the NPI registry since April 2017. He is enrolled in Medicare PECOS and is a graduate of Loma Linda University School Of Medicine (2017).
NPPES Registry Identity
Specialties & Licenses
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
Michael Nwosu 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 Michael Nwosu reassigns Medicare billing to 3 organizations. Each organization bills Medicare for the services this provider delivers there; the nearest is listed first.
San Jacinto, CA 92583
- Reassigned Medicare billing, California enrollment
- Medicare enrollment name: St. John's Community Health
- 404 clinicians in this Medicare group
Escondido, CA 92025
- Reassigned Medicare billing, California enrollment
- 332 clinicians in this Medicare group
Fountain Valley, CA 92708
- Reassigned Medicare billing, California enrollment
- 948 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.
Physician Visit Costs CMS claims · ZIP area
Typical Medicare office-visit costs in the 92590 ZIP code area, from fee-for-service claims. These are area statistics, not this provider’s prices; actual charges vary by service and coverage.
Referred Medical Equipment & Supplies CMS DME claims 3
Durable medical equipment, devices and supplies this provider ordered from DME suppliers for patients, from Medicare fee-for-service claims.
Other Providers at the Same Location NPPES 19
Providers registered at the same practice address, or within the immediate area, according to the NPPES registry.
TEMECULA, CA 92590
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 Michael Nwosu's NPI number?
The NPI number for Michael Nwosu is 1659805158. It was assigned to this individual provider in the NPPES registry on April 12, 2017.
Where is Michael Nwosu located?
Michael Nwosu practices at 41840 Enterprise Cir N, Temecula, CA 92590. The listed phone number is (951) 225-6400.
What is Michael Nwosu's specialty?
The primary specialty registered for this NPI is Family Medicine with taxonomy code 207Q00000X.
Is Michael Nwosu enrolled in Medicare?
Yes. Michael Nwosu 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 Michael Nwosu's services?
According to the CMS Revalidation Reassignment List (October 2026 release), Michael Nwosu reassigns Medicare benefits to 3 organizations: St. Johns Community Health (San Jacinto, CA), Neighborhood Healthcare (Escondido, CA) and Memorialcare Medical Foundation (Fountain Valley, CA). 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 Michael Nwosu's services. Reassignment records can lag staffing changes; confirm current arrangements with the organization.
When was this NPI record last updated?
The NPPES record for Michael Nwosu was last updated on January 12, 2026. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 9 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.
# Michael Nwosu, M.D. · NPI 1659805158
Family Medicine physician in Temecula, California. Individual provider, active in the CMS NPPES registry since April 12, 2017.
## Identity
- **NPI:** 1659805158 (Entity type: Individual)
- **Enumerated:** April 12, 2017
- **Primary specialty:** Family Medicine · taxonomy 207Q00000X
- **State license:** A166465 (California)
- **Sole proprietor:** Yes
## Practice location
- **Address:** 41840 ENTERPRISE CIR N, Temecula, CA 92590-5654
- **Phone:** (951) 225-6400 · **Fax:** (360) 462-2751
## 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): St. Johns Community Health (NPI 1184499121, San Jacinto, CA); Neighborhood Healthcare (NPI 1598703647, Escondido, CA); Memorialcare Medical Foundation (NPI 1205167350, Fountain Valley, CA) · CMS Revalidation Reassignment List, October 2026 release
- **Medical school:** Loma Linda University School Of Medicine, class of 2017
## Record status
- **NPPES last updated:** January 12, 2026
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Source: [NPI Profile](https://npiprofile.com/npi/1659805158) · Data from the CMS NPPES public registry.