RUBEN E. ALVAREZ MD
NPI 1598832511
Internal Medicine in Los Angeles, CA
About Ruben E. Alvarez Md NPPES
Official registry information on file with the National Plan and Provider Enumeration System.
RUBEN E. ALVAREZ MD (NPI 1598832511) is an individual internal medicine provider in Los Angeles, California, licensed in California (G76115) and active in the NPI registry since November 2006. He is enrolled in Medicare PECOS and is a graduate of Harvard Medical School (1990).
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
Ruben E. Alvarez Md 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 Ruben Alvarez reassigns Medicare billing to 1 organization. The organization bills Medicare for the services this provider delivers there.
Los Angeles, CA 90027
- Reassigned Medicare billing, California enrollment
- 13,921 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 90027 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.
LOS ANGELES, CA 90027
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 Ruben Alvarez's NPI number?
The NPI number for Ruben Alvarez is 1598832511. It was assigned to this individual provider in the NPPES registry on November 29, 2006.
Where is Ruben Alvarez located?
Ruben Alvarez practices at 4733 W Sunset Blvd, Los Angeles, CA 90027. The listed phone number is (323) 783-4011.
What is Ruben Alvarez's specialty?
The primary specialty registered for this NPI is Internal Medicine with taxonomy code 207R00000X.
Is Ruben Alvarez enrolled in Medicare?
Yes. Ruben Alvarez 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 Ruben Alvarez's services?
According to the CMS Revalidation Reassignment List (October 2026 release), Ruben Alvarez reassigns Medicare benefits to Southern California Permanente Medical Group (Los Angeles, 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 Ruben Alvarez'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 Ruben Alvarez was last updated on November 30, 2021. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 4 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.
# Ruben E. Alvarez, MD · NPI 1598832511
Internal Medicine physician in Los Angeles, California. Individual provider, active in the CMS NPPES registry since November 29, 2006.
## Identity
- **NPI:** 1598832511 (Entity type: Individual)
- **Enumerated:** November 29, 2006
- **Primary specialty:** Internal Medicine · taxonomy 207R00000X
- **State license:** G76115 (California)
- **Sole proprietor:** No
## Practice location
- **Address:** 4733 W SUNSET BLVD, Los Angeles, CA 90027-6021
- **Phone:** (323) 783-4011
## 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:** Southern California Permanente Medical Group (NPI 1134151657, Los Angeles, CA), under Medicare reassignment (form CMS-855R) · CMS Revalidation Reassignment List, October 2026 release
- **Medical school:** Harvard Medical School, class of 1990
## Record status
- **NPPES last updated:** November 30, 2021
---
Source: [NPI Profile](https://npiprofile.com/npi/1598832511) · Data from the CMS NPPES public registry.