DR. LORRAINE NKEIRU SUNDAY M.D./PHD
NPI 1558407197
General Practice in Orange, CA
About Dr. Lorraine Nkeiru Sunday M.d./phd NPPES
Official registry information on file with the National Plan and Provider Enumeration System.
DR. LORRAINE NKEIRU SUNDAY M.D./PHD (NPI 1558407197) is an individual general practice provider in Orange, California, licensed in California (A 80570) and active in the NPI registry since January 2007. She is enrolled in Medicare PECOS and is a graduate of University Of California, Irvine, California College Of Medicine (1999).
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
Dr. Lorraine Nkeiru Sunday M.d./phd 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 Reassignment
Medicare enrollment records show Lorraine Sunday reassigns Medicare billing to 1 organization. The organization bills Medicare for the services this provider delivers there.
La Palma, CA 90623
- Reassigned Medicare billing, California enrollment
- 304 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.
Other Providers at the Same Location NPPES 11
Providers registered at the same practice address, or within the immediate area, according to the NPPES registry.
ORANGE, CA 92867
ORANGE, CA 92867
ORANGE, CA 92867
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 Lorraine Sunday's NPI number?
The NPI number for Lorraine Sunday is 1558407197. It was assigned to this individual provider in the NPPES registry on January 30, 2007.
Where is Lorraine Sunday located?
Lorraine Sunday practices at 1045 N Tustin St, Orange, CA 92867. The listed phone number is (714) 288-8303.
What is Lorraine Sunday's specialty?
The primary specialty registered for this NPI is General Practice with taxonomy code 208D00000X.
Is Lorraine Sunday enrolled in Medicare?
Yes. Lorraine Sunday 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 organization bills Medicare for Lorraine Sunday's services?
According to the CMS Revalidation Reassignment List (October 2026 release), Lorraine Sunday reassigns Medicare benefits to American Current Care Of California, A Medical Corporation (La Palma, CA). The 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 Lorraine Sunday'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 Lorraine Sunday was last updated on March 11, 2015. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 11 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. Lorraine Nkeiru Sunday, M.D./PHD · NPI 1558407197
General Practice physician in Orange, California. Individual provider, active in the CMS NPPES registry since January 30, 2007.
## Identity
- **NPI:** 1558407197 (Entity type: Individual)
- **Enumerated:** January 30, 2007
- **Primary specialty:** General Practice · taxonomy 208D00000X
- **State license:** A 80570 (California)
- **Sole proprietor:** No
## Practice location
- **Address:** 1045 N TUSTIN ST, Orange, CA 92867-5904
- **Phone:** (714) 288-8303
## 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:** American Current Care Of California, A Medical Corporation (NPI 1932534609, La Palma, CA), under Medicare reassignment (form CMS-855R) · CMS Revalidation Reassignment List, October 2026 release
- **Medical school:** University Of California, Irvine, California College Of Medicine, class of 1999
## Record status
- **NPPES last updated:** March 11, 2015
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Source: [NPI Profile](https://npiprofile.com/npi/1558407197) · Data from the CMS NPPES public registry.