Provider records sourced from NPPES (CMS National Plan & Provider Enumeration System). Data current as of October 4, 2026.
NPIDirectory

Dr. Patrick Um, MD

Individual provider Emergency Medicine Physician · NPI 1225175227

Dr. Patrick Um, MD practises Emergency Medicine in Oxnard, California. Graduated from R Franklin University of Med & SCI/Chicago Medical School in 2005, 21 years ago. Practices with Cep America - California, a 1,267-clinician group and accepts Medicare assignment. Licensed in California and Maryland.

Years since qualifying
21
Trained at
R Franklin University of Med & SCI/Chicago Medical School
Licensed in
CA, MD
In the registry since
2007
Specialties on file
2
What do these letters mean?
MD — Doctor of Medicine
A physician who completed allopathic medical school.

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Practice location Address checks out

1600 N Rose Ave
Oxnard, CA 93030-3722
Phone: (805) 988-2679
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Pin is approximate — placed at the ZIP-code centre, not the exact door.

Specialties & licences

Emergency Medicine Physician (primary) Taxonomy 207P00000X · Licence A103916 (CA)
Emergency Medicine Physician Taxonomy 207P00000X · Licence 092719-0 (MD)

Record details

NPI number1225175227
Entity typeIndividual (Type 1)
GenderMale
Credentials MD
Sole proprietorYes
NPI enumeratedJanuary 31, 2007
Last updated in NPPESApril 5, 2022
Certification dateApril 5, 2022

Medicare enrollment

From the CMS Doctors & Clinicians file — this clinician is enrolled in Medicare.

Medicare specialtyEMERGENCY MEDICINE
Medical schoolR FRANKLIN UNIVERSITY OF MED & SCI/CHICAGO MEDICAL SCHOOL
Graduated 2005 (21 years in practice)
Group practice Cep America - California — 1267 clinicians
Accepts Medicare assignment Yes — accepts the Medicare-approved amount

Medicare patients and services, 2024

From the CMS Medicare Physician & Other Practitioners file for calendar year 2024. It counts Original Medicare patients only, so a practice that mostly sees Medicare Advantage or privately insured patients looks smaller here than it is.

Medicare patients487
Services billed 809 a service is one billed item, such as a visit, a test or a procedure
Average patient age76

Dollar amounts are not shown. What Medicare pays a practice is gross billings, before staff, premises and tax and including the cost of any drugs it administers, so it is not what a clinician earns.

Practises at

Facilities the CMS Facility Affiliation file lists for this clinician.

Colleagues at Cep America - California

Clinicians the CMS Doctors & Clinicians file lists under the same group practice. CMS counts 1267 clinicians in the practice; 12 are shown here.

Other providers in Oxnard