Dr Patrick Um, MD - Medicare Emergency Medicine in Oxnard, CA

  1. Home
  2. Emergency Medicine
  3. CA
  4. Oxnard
Dr Patrick Um, MD is a medicare enrolled "Emergency Medicine" physician in Oxnard, California. His current practice location is 1600 N Rose Ave, Oxnard, California. You can reach out to his office (for appointments etc.) via phone at (805) 988-2679.

Dr Patrick Um is licensed to practice in California (license number A103916) and he also participates in the medicare program. He does not accept medicare assignments directly but he may accept medicare through third-party (refer to Reassignment section below) and may also prescribe medicare part D drugs. His NPI Number is 1225175227.

Contact Information

Dr Patrick Um, MD
1600 N Rose Ave,
Oxnard, CA 93030-3722
(805) 988-2679
Not Available

Map and Direction




Physician's Profile

Full NameDr Patrick Um
GenderMale
SpecialityEmergency Medicine
Location1600 N Rose Ave, Oxnard, California
Accepts Medicare AssignmentsMedicare enrolled and may accept medicare through third-party reassignment. May prescribe medicare part D drugs.
  NPI Data:
  • NPI Number: 1225175227
  • Provider Enumeration Date: 01/31/2007
  • Last Update Date: 04/05/2022
  Medicare PECOS Information:
  • PECOS PAC ID: 5597826073
  • Enrollment ID: I20081202000538

Medical Identifiers

Medical identifiers for Dr Patrick Um such as npi, medicare ID, medicare PIN, medicaid, etc.
IdentifierTypeStateIssuer
1225175227NPI-NPPES

Medical Taxonomies and Licenses

TaxonomyTypeLicense (State)Status
207P00000XEmergency Medicine A103916 (California)Primary
207P00000XEmergency Medicine 092719-0 (Maryland)Secondary

Medicare Reassignments

Some practitioners may not bill the customers directly but medicare billing happens through clinics / group practice / hospitals where the provider works. Medicare reassignment of benefits is a mechanism by which practitioners allow third parties to bill and receive payment for medicare services performed by them. Dr Patrick Um allows following entities to bill medicare on his behalf.
Entity NameCep America - California
Entity TypePart B Supplier - Clinic/group Practice
Entity IdentifiersNPI Number: 1023063542
PECOS PAC ID: 6103739131
Enrollment ID: O20031106000520
Entity NameCep America - California
Entity TypePart B Supplier - Clinic/group Practice
Entity IdentifiersNPI Number: 1548667843
PECOS PAC ID: 6103739131
Enrollment ID: O20040121000458

Medicare Part D Prescriber Enrollment

Any physician or other eligible professional who prescribes Part D drugs must either enroll in the Medicare program or opt out in order to prescribe drugs to their patients with Part D prescription drug benefit plans. Dr Patrick Um is enrolled with medicare and thus, if eligible, can prescribe medicare part D drugs to patients with medicare part D benefits.

Mailing Address and Practice Location

Mailing AddressPractice Location Address
Dr Patrick Um, MD
Po Box 6655,
Fullerton, CA 92834-6655

Ph: () -		Dr Patrick Um, MD
1600 N Rose Ave,
Oxnard, CA 93030-3722

Ph: (805) 988-2679

Reviews and Comments


Emergency Medicine Doctors in Oxnard, CA

Christine Chang, MD
Emergency Medicine
Medicare: Accepting Medicare Assignments
Practice Location: 1600 N Rose Ave, Oxnard, CA 93030
Phone: 805-988-2663    
Dr. Van Anh Chandler, MEDICAL DOCTOR
Emergency Medicine
Medicare: Medicare Enrolled
Practice Location: 1600 N Rose Ave, Oxnard, CA 93030
Phone: 805-988-2674    
Dr. John Wordy Buckner Iv, M.D.
Emergency Medicine
Medicare: Accepting Medicare Assignments
Practice Location: 1600 N Rose Ave, Oxnard, CA 93030
Phone: 805-988-2500    
Dr. Shon Marcos Sidransky, M.D.
Emergency Medicine
Medicare: Accepting Medicare Assignments
Practice Location: 1600 N Rose Ave, Oxnard, CA 93030
Phone: 805-988-2843    Fax: 805-988-2844
Dr. Richard E.m. Wagner, M.D.
Emergency Medicine
Medicare: Accepting Medicare Assignments
Practice Location: 1600 N Rose Ave, Oxnard, CA 93030
Phone: 805-988-2843    Fax: 805-988-2844
Dr. Richard F. Handin, MEDICAL DOCTOR
Emergency Medicine
Medicare: Medicare Enrolled
Practice Location: 1600 N Rose Ave, Oxnard, CA 93030
Phone: 805-988-2674    Fax: 805-969-5878

Medicare Program: Medicare is a federal government program which provides health insurance to people who are 65 or older. This program also covers certain younger people with disabilities (who receive Social Security Disability Insurance - SSDI), and people with End-Stage Renal Disease (permanent kidney failure requiring dialysis or a transplant, sometimes called ESRD.

Medicare Assignment: Assignment means that your doctor, provider, or supplier agrees (or is required by law) to accept the Medicare-approved amount as full payment for covered services. Most doctors, providers, and suppliers accept assignment, but you should always check to make sure. Participating providers have signed an agreement to accept assignment for all Medicare-covered services.

NPI Number: The National Provider Identifier (NPI) is a unique identification number for covered health care providers. The NPI must be used in lieu of legacy provider identifiers in the HIPAA standards transactions. Covered health care providers and all health plans and health care clearinghouses must use the NPIs in the administrative and financial transactions adopted under HIPAA (Health Insurance Portability and Accountability Act).

Our Data: Information on www.medicarelist.com is built using data sources published by Centers for Medicare & Medicaid Services (CMS) under Freedom of Information Act (FOIA). The information disclosed on the NPI Registry are FOIA-disclosable and are required to be disclosed under the FOIA and the eFOIA amendments to the FOIA. There is no way to 'opt out' or 'suppress' the NPPES record data for health care providers with active NPIs.