RUBEN GUZMAN JR MD
NPI 1174142533
Emergency Medicine in Los Angeles, CA
About Ruben Guzman Jr Md NPPES
Official registry information on file with the National Plan and Provider Enumeration System.
RUBEN GUZMAN JR MD (NPI 1174142533) is an individual emergency medicine provider in Los Angeles, California, licensed in California (A184194) and active in the NPI registry since April 2020. He is enrolled in Medicare PECOS, is affiliated with Southern Coos Hospital & Health Center, and is a graduate of University Of Southern California Keck School Of Medicine (2020).
NPPES Registry Identity
Specialties & Licenses 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
Ruben Guzman Jr 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 Reassignments
4Medicare enrollment records show Ruben Guzman Jr reassigns Medicare billing to 4 organizations. Each organization bills Medicare for the services this provider delivers there; the nearest is listed first.
Los Angeles, CA 90063
- Reassigned Medicare billing, California enrollment
- 1,939 clinicians in this Medicare group
Los Angeles, CA 90027
- Reassigned Medicare billing, California enrollment
- 13,921 clinicians in this Medicare group
Whittier, CA 90602
- Reassigned Medicare billing, California enrollment
- 121 clinicians in this Medicare group
Bakersfield, CA 93301
- Reassigned Medicare billing, California enrollment
- 163 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 3
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.
Hospital Affiliations CMS Care Compare
Hospitals where this provider delivers care, identified from recent Medicare claims and place-of-service records.
Southern Coos Hospital & Health Center
Critical Access Hospitals · Bandon, ORPhysician Visit Costs CMS claims · ZIP area
Typical Medicare office-visit costs in the 90033 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 90033
LOS ANGELES, CA 90033
LOS ANGELES, CA 90033
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 Guzman Jr's NPI number?
The NPI number for Ruben Guzman Jr is 1174142533. It was assigned to this individual provider in the NPPES registry on April 15, 2020.
Where is Ruben Guzman Jr located?
Ruben Guzman Jr practices at 2051 Marengo St, Los Angeles, CA 90033. The listed phone number is (323) 409-1945.
What is Ruben Guzman Jr's specialty?
The primary specialty registered for this NPI is Emergency Medicine with taxonomy code 207P00000X.
Is Ruben Guzman Jr enrolled in Medicare?
Yes. Ruben Guzman Jr 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 Ruben Guzman Jr's services?
According to the CMS Revalidation Reassignment List (October 2026 release), Ruben Guzman Jr reassigns Medicare benefits to 4 organizations: County Of Los Angeles (Los Angeles, CA), Southern California Permanente Medical Group (Los Angeles, CA), Intercommunity Emergency Medical Group (Whittier, CA) and Grand Avenue Emergency Physicians Medical Group Inc (Bakersfield, 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 Ruben Guzman Jr's services. Reassignment records can lag staffing changes; confirm current arrangements with the organization.
Is Ruben Guzman Jr affiliated with any hospitals?
According to CMS data, Ruben Guzman Jr is affiliated with Southern Coos Hospital & Health Center.
When was this NPI record last updated?
The NPPES record for Ruben Guzman Jr was last updated on May 7, 2024. 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.
# Ruben Guzman Jr, MD · NPI 1174142533
Emergency Medicine physician in Los Angeles, California. Individual provider, active in the CMS NPPES registry since April 15, 2020.
## Identity
- **NPI:** 1174142533 (Entity type: Individual)
- **Enumerated:** April 15, 2020
- **Primary specialty:** Emergency Medicine · taxonomy 207P00000X
- **State license:** A184194 (California)
- **Sole proprietor:** No
## Practice location
- **Address:** 2051 MARENGO ST, Los Angeles, CA 90033-1352
- **Phone:** (323) 409-1945
## 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:** 4 organizations under Medicare reassignment (form CMS-855R): County Of Los Angeles (NPI 1679061592, Los Angeles, CA); Southern California Permanente Medical Group (NPI 1134151657, Los Angeles, CA); Intercommunity Emergency Medical Group (NPI 1871535286, Whittier, CA); Grand Avenue Emergency Physicians Medical Group Inc (NPI 1962913632, Bakersfield, CA) · CMS Revalidation Reassignment List, October 2026 release
- **Medical school:** University Of Southern California Keck School Of Medicine, class of 2020
## Record status
- **NPPES last updated:** May 7, 2024
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Source: [NPI Profile](https://npiprofile.com/npi/1174142533) · Data from the CMS NPPES public registry.