SHIRIN ALONZO MD, MPH
NPI 1225318041
Internal Medicine in Beverly Hills, CA
About Shirin Alonzo Md, Mph NPPES
Official registry information on file with the National Plan and Provider Enumeration System.
SHIRIN ALONZO MD, MPH (NPI 1225318041) is an individual internal medicine provider in Beverly Hills, California, licensed in California (A119906) and active in the NPI registry since August 2011. She is enrolled in Medicare PECOS, maintains 2 additional practice locations, and is a graduate of University Of California, San Diego School Of Medicine (2010).
NPPES Registry Identity
Specialties & Licenses 2
Secondary Practice Locations 2
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
Shirin Alonzo Md, Mph 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
2Medicare enrollment records show Shirin Alonzo reassigns Medicare billing to 2 organizations. Each organization bills Medicare for the services this provider delivers there; the nearest is listed first.
Los Angeles, CA 90048
- Reassigned Medicare billing, California enrollment
- 2,118 clinicians in this Medicare group
San Diego, CA 92103
- Reassigned Medicare billing, California enrollment
- 51 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 4
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.
Physician Visit Costs CMS claims · ZIP area
Typical Medicare office-visit costs in the 90211 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.
BEVERLY HILLS, CA 90211
BEVERLY HILLS, CA 90211
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 Shirin Alonzo's NPI number?
The NPI number for Shirin Alonzo is 1225318041. It was assigned to this individual provider in the NPPES registry on August 24, 2011.
Where is Shirin Alonzo located?
Shirin Alonzo practices at 8767 Wilshire Blvd Fl 3, Beverly Hills, CA 90211. The listed phone number is (310) 385-6031.
What is Shirin Alonzo's specialty?
The primary specialty registered for this NPI is Internal Medicine with taxonomy code 207R00000X.
Is Shirin Alonzo enrolled in Medicare?
Yes. Shirin Alonzo 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 Shirin Alonzo's services?
According to the CMS Revalidation Reassignment List (October 2026 release), Shirin Alonzo reassigns Medicare benefits to 2 organizations: Cedars-Sinai Medical Care Foundation (Los Angeles, CA) and San Diego American Indian Health Center (San Diego, 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 Shirin Alonzo'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 Shirin Alonzo was last updated on December 22, 2023. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 2 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.
# Shirin Alonzo, MD, MPH · NPI 1225318041
Internal Medicine physician in Beverly Hills, California. Individual provider, active in the CMS NPPES registry since August 24, 2011.
## Identity
- **NPI:** 1225318041 (Entity type: Individual)
- **Enumerated:** August 24, 2011
- **Primary specialty:** Internal Medicine · taxonomy 207R00000X
- **State license:** A119906 (California)
- **Sole proprietor:** Yes
## Practice location
- **Address:** 8767 WILSHIRE BLVD FL 3, Beverly Hills, CA 90211-2714
- **Phone:** (310) 385-6031
## 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:** 2 organizations under Medicare reassignment (form CMS-855R): Cedars-Sinai Medical Care Foundation (NPI 1043826720, Los Angeles, CA); San Diego American Indian Health Center (NPI 1003902917, San Diego, CA) · CMS Revalidation Reassignment List, October 2026 release
- **Medical school:** University Of California, San Diego School Of Medicine, class of 2010
## Record status
- **NPPES last updated:** December 22, 2023
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Source: [NPI Profile](https://npiprofile.com/npi/1225318041) · Data from the CMS NPPES public registry.