Ruben Guzman Jr, MD
Emergency Medicine Physician · Los Angeles, CA
Ruben Guzman Jr, MD is an emergency medicine physician with a practice address in Los Angeles, California, and NPI 1174142533, issued on Apr 15, 2020. Check the license (California A184194, as entered in NPPES) on the Medical Board of California; the Medicare figures below come from public CMS files.
- Name
- Ruben Guzman Jr
- Credential
- MD
- Primary taxonomy
- Emergency Medicine Physician 207P00000X
- License number
- A184194 CA
Self-reported in NPPES; status is on the state search - Practice location
- 2051 Marengo St, Los Angeles, CA 90033
- Phone
- (323) 409-1945
- Enumerated
- Apr 15, 2020
- Record last updated
- May 7, 2024
- Medicare enrollment
- Enrolled (PECOS I20230920001717); accepts Medicare assignment
- Medical or professional school
- University Of Southern California Keck School Of Medicine, 2020
- Entity
- Type 1 · individual
8 nearest emergency medicine physician records → All 7,751 in California → Look up another NPI →
Also registered at 2051 Marengo St
A shared address usually means a shared clinic or building; it does not show who employs whom.
- Helen AbolarinPsychiatric/Mental Health Nurse Practitioner1407551740
- Nawal AbouzahrStudent in an Organized Health Care Education/Training Program1881054104
- Shelby AdlerPsychiatry Physician1407432263
- Shalleymar AgitoRegistered Respiratory Therapist1649850694
- Adolfo AguilarCritical Care Registered Respiratory Therapist1053836999
- Ashley Allen, MDEmergency Medicine Physician1053751875
Verify Ruben Guzman Jr in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersMedical Board of California
Search for license A184194Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
38% fewer Medicare Part D claims than the average emergency medicine physician in 2024
139 Medicare Part D claims for 90 beneficiaries, against an average of 226 among the 54,106 providers of this specialty who prescribed in Part D.
Most prescribed
- Ciprofloxacin Hcl22 claims
Source: CMS Medicare Part D Prescribers by Provider and Drug, 2024 (data.cms.gov). Part D covers prescriptions for Medicare patients only; drugs with fewer than 11 claims are not published.
Bills Medicare through one group practice
- Intercommunity Emergency Medical GroupWhittier, CA
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
Ruben Guzman Jr among 7,751 emergency medicine physician records in California
Ruben Guzman Jr, MD is one of 7,751 emergency medicine physician records with a practice address in California. 81% of them appear in a Medicare file (Part D prescribing, MIPS, Open Payments or Medicare group billing); this one does. Its NPI, issued in 2020, is newer than 88% of them.
- NPI issued2020 · 88% of these records are older, 8% newer
- In a Medicare fileYes · 81% of these records are
- In the CMS Doctors and Clinicians fileYes · 59% of these records are
- Graduated2020 · median 2011 among the 4,560 with a school on file
- Record last updated2024 · 59% of these records were not updated in five years or more
Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 207P00000X and a California practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
Emergency Medicine Physician providers in California
There are 7,751 emergency medicine physician records in California.
All 7,751 in California → Every provider in Los Angeles → Emergency Medicine Physician nationwide →
The 8 emergency medicine physician records with the nearest ZIP codes
- Deirdre Anglin, MDLos Angeles, CA 900331306932025
- Joseph BaltrushesLos Angeles, CA 900331629152178
- Aaron Bright, M.D.Los Angeles, CA 900331023054087
- Christopher Celentano, MDLos Angeles, CA 900331972516417
- Christine DinuzzoLos Angeles, CA 900331952456741
- Marc Eckstein, M.D.Los Angeles, CA 900331922010867
- Sean Henderson, M.D.Los Angeles, CA 900331205887064
- Helen Ho, MDLos Angeles, CA 900331447208962
Common questions
What is Ruben Guzman Jr, MD's NPI number?
Ruben Guzman Jr, MD's National Provider Identifier (NPI) is 1174142533, issued on Apr 15, 2020. An NPI identifies a provider in billing; it is not a license.
Where is Ruben Guzman Jr, MD located?
The NPPES record lists a practice address at 2051 Marengo St, Los Angeles, CA, 90033. Phone: (323) 409-1945. Providers update this record themselves, so call before visiting.
How can I verify Ruben Guzman Jr, MD's license?
NPPES lists California license number A184194, as entered by the provider. Search the Medical Board of California at https://www.mbc.ca.gov/License-Verification/default.aspx. The NPPES record confirms identity only; the state search shows license status, expiration and public orders.
How much does Ruben Guzman Jr, MD prescribe under Medicare Part D?
In 2024, Ruben Guzman Jr, MD had 139 Medicare Part D claims for 90 beneficiaries; the average among emergency medicine physician prescribers was 226. Part D covers Medicare prescriptions only.
Source: CMS National Plan and Provider Enumeration System (NPPES), file of Aug 9, 2026 (NPPES files on CMS.gov); NUCC Health Care Provider Taxonomy. Medicare files from data.cms.gov. An NPI identifies who bills; it is not a license.
Figures on PlainDoctor are read from the federal files each page names (CMS NPPES, Medicare Part D, MIPS, Open Payments; the HHS-OIG exclusion list only as counts) and from Census population estimates, with the file date shown beside them. See our editorial standards & corrections policy, the methodology behind these numbers, or report a data error. Data current as of Aug 9, 2026.