Christianna Chorong Sim, MD - Medicare Emergency Medicine in Santa Monica, CA

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Christianna Chorong Sim, MD is a medicare enrolled "Emergency Medicine" physician in Santa Monica, California. Her current practice location is 1250 16th St, Santa Monica, California. You can reach out to her office (for appointments etc.) via phone at (310) 794-0585.

Christianna Chorong Sim is licensed to practice in California (license number A185926) and she also participates in the medicare program. She does not accept medicare assignments directly but she may accept medicare through third-party (refer to Reassignment section below) and may also prescribe medicare part D drugs. Her NPI Number is 1396235743.

Contact Information

Christianna Chorong Sim, MD
1250 16th St,
Santa Monica, CA 90404-1249
(310) 794-0585
Not Available

Map and Direction




Physician's Profile

Full NameChristianna Chorong Sim
GenderFemale
SpecialityEmergency Medicine
Location1250 16th St, Santa Monica, California
Accepts Medicare AssignmentsMedicare enrolled and may accept medicare through third-party reassignment. May prescribe medicare part D drugs.
  NPI Data:
  • NPI Number: 1396235743
  • Provider Enumeration Date: 05/11/2018
  • Last Update Date: 08/29/2025
  Medicare PECOS Information:
  • PECOS PAC ID: 5193186732
  • Enrollment ID: I20230731001198

Medical Identifiers

Medical identifiers for Christianna Chorong Sim such as npi, medicare ID, medicare PIN, medicaid, etc.
IdentifierTypeStateIssuer
1396235743NPI-NPPES

Medical Taxonomies and Licenses

TaxonomyTypeLicense (State)Status
207P00000XEmergency Medicine A185926 (California)Primary

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. Christianna Chorong Sim allows following entities to bill medicare on her behalf.
Entity NameUniversity Of California Sfgh Medical Group
Entity TypePart B Supplier - Clinic/group Practice
Entity IdentifiersNPI Number: 1154396208
PECOS PAC ID: 5496668410
Enrollment ID: O20031113000632
Entity NameStanford Health Care
Entity TypePart B Supplier - Clinic/group Practice
Entity IdentifiersNPI Number: 1437292927
PECOS PAC ID: 6709797491
Enrollment ID: O20031124000348
Entity NameCity & County Of San Francisco
Entity TypePart B Supplier - Clinic/group Practice
Entity IdentifiersNPI Number: 1982737524
PECOS PAC ID: 1658280748
Enrollment ID: O20050309000770
Entity NameLpch Medical Group Div Of Lucile
Entity TypePart B Supplier - Clinic/group Practice
Entity IdentifiersNPI Number: 1417907940
PECOS PAC ID: 0840298543
Enrollment ID: O20061113000232

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. Christianna Chorong Sim 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
Christianna Chorong Sim, MD
5767 W Century Blvd Ste 400,
Los Angeles, CA 90045-5631

Ph: () -		Christianna Chorong Sim, MD
1250 16th St,
Santa Monica, CA 90404-1249

Ph: (310) 794-0585

Reviews and Comments


Emergency Medicine Doctors in Santa Monica, CA

William Shyy, M.D.
Emergency Medicine
Medicare: Accepting Medicare Assignments
Practice Location: 1250 16th St, Santa Monica, CA 90404
Phone: 310-794-7700    
Edward S Cotner, MD
Emergency Medicine
Medicare: Accepting Medicare Assignments
Practice Location: 1328 Twenty Second Street, Santa Monica, CA 90404
Phone: 310-582-7089    
Walid H. Ghurabi, D.O.
Emergency Medicine
Medicare: Medicare Enrolled
Practice Location: 1250 16th St, Emergency Department, Santa Monica, CA 90404
Phone: 310-319-4000    
Dr. Michael Jeffrey Weitz, MD.
Emergency Medicine
Medicare: Medicare Enrolled
Practice Location: 1328 Twenty Second St, Santa Monica, CA 90404
Phone: 310-582-7089    
Dr. Robert Lee Hook Iii, M.D.
Emergency Medicine
Medicare: Accepting Medicare Assignments
Practice Location: 1250 16th St, Santa Monica, CA 90404
Phone: 310-794-7700    
Ms. Rosemarie Bustos Diaz,
Emergency Medicine
Medicare: Medicare Enrolled
Practice Location: 1250 16th St, Santa Monica, CA 90404
Phone: 310-794-7700    
Amy L Kijner, PA
Emergency Medicine
Medicare: Not Enrolled in Medicare
Practice Location: 1328 22nd St, Santa Monica, CA 90404
Phone: 310-582-7089    

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.