MARY ANN ALONZO MAGALLANES DO
NPI 1952006512
Internal Medicine in Loma Linda, CA
About Mary Ann Alonzo Magallanes Do NPPES
Official registry information on file with the National Plan and Provider Enumeration System.
MARY ANN ALONZO MAGALLANES DO (NPI 1952006512) is an individual internal medicine provider in Loma Linda, California, licensed in California (20A23449) and active in the NPI registry since April 2023. She is enrolled in Medicare PECOS and is a graduate of Other (2023).
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 (PECOS)
Mary Ann Alonzo Magallanes Do is registered in the CMS Provider Enrollment, Chain and Ownership System (PECOS).
Medicare Billing Reassignment
Medicare enrollment records show Mary Ann Magallanes reassigns Medicare billing to 1 organization. The organization bills Medicare for the services this provider delivers there.
Loma Linda, CA 92350
- Reassigned Medicare billing, California enrollment
- 2,584 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 92354 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 20
Providers registered at the same practice address, or within the immediate area, according to the NPPES registry.
LOMA LINDA, CA 92354
LOMA LINDA, CA 92354
LOMA LINDA, CA 92354
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 Mary Ann Magallanes's NPI number?
The NPI number for Mary Ann Magallanes is 1952006512. It was assigned to this individual provider in the NPPES registry on April 3, 2023.
Where is Mary Ann Magallanes located?
Mary Ann Magallanes practices at 11234 Anderson St Gme Office Westerly Suite 'c', Loma Linda, CA 92354. The listed phone number is (909) 558-4074.
What is Mary Ann Magallanes's specialty?
The primary specialty registered for this NPI is Internal Medicine with taxonomy code 207R00000X.
Is Mary Ann Magallanes enrolled in Medicare?
Yes. Mary Ann Magallanes is registered in the Medicare PECOS enrollment system.
Which organization bills Medicare for Mary Ann Magallanes's services?
According to the CMS Revalidation Reassignment List (October 2026 release), Mary Ann Magallanes reassigns Medicare benefits to Faculty Physicians And Surgeons Of Llusm (Loma Linda, 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 Mary Ann Magallanes'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 Mary Ann Magallanes was last updated on September 21, 2026. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 48 days 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.
# Mary Ann Alonzo Magallanes, DO · NPI 1952006512
Internal Medicine physician in Loma Linda, California. Individual provider, active in the CMS NPPES registry since April 3, 2023.
## Identity
- **NPI:** 1952006512 (Entity type: Individual)
- **Enumerated:** April 3, 2023
- **Primary specialty:** Internal Medicine · taxonomy 207R00000X
- **State license:** 20A23449 (California)
- **Sole proprietor:** Yes
## Practice location
- **Address:** 11234 ANDERSON ST, GME OFFICE WESTERLY SUITE 'C', Loma Linda, CA 92354-2804
- **Phone:** (909) 558-4074
## Medicare
- **Medicare:** Enrolled in Medicare (PECOS)
- **Ordering & referring:** eligible for Part B labs & imaging, durable medical equipment, home health, power mobility devices
- **Bills Medicare through:** Faculty Physicians And Surgeons Of Llusm (NPI 1477503407, Loma Linda, CA), under Medicare reassignment (form CMS-855R) · CMS Revalidation Reassignment List, October 2026 release
- **Medical school:** Other, class of 2023
## Record status
- **NPPES last updated:** September 21, 2026
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Source: [NPI Profile](https://npiprofile.com/npi/1952006512) · Data from the CMS NPPES public registry.