Christianna Chorong Sim, MD
Emergency Medicine Physician · Santa Monica, CA
Christianna Chorong Sim, MD is an emergency medicine physician with a practice address in Santa Monica, California, and NPI 1396235743, issued on May 11, 2018. Check the license (California A185926, as entered in NPPES) on the Medical Board of California; the Medicare figures below come from public CMS files.
- Name
- Christianna Chorong Sim
- Credential
- MD
- Primary taxonomy
- Emergency Medicine Physician 207P00000X
- License number
- A185926 CA
Self-reported in NPPES; status is on the state search - Practice location
- 1250 16TH St, Santa Monica, CA 90404
- Phone
- (310) 794-0585
- Enumerated
- May 11, 2018
- Record last updated
- Aug 29, 2025
- Medicare enrollment
- Enrolled (PECOS I20230731001198); may accept Medicare assignment
- Medical or professional school
- State University Of New York Downstate Medical Center, 2018
- Entity
- Type 1 · individual
8 nearest emergency medicine physician records → All 7,751 in California → Look up another NPI →
Also registered at 1250 16TH St
A shared address usually means a shared clinic or building; it does not show who employs whom.
- Melanie Altamirano-CariagaNurse Practitioner1588060198
- Miguel Arellano, NPNurse Practitioner1295460806
- Jason Bahk, M.D.Hospitalist Physician1245573187
- Christopher BelfourEmergency Medicine Physician1518259837
- Umesh Bhagia, MDSurgery Physician1568468528
- Cassandra Blaylock, NPHematology & Oncology Physician1588043400
Verify Christianna Chorong Sim in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersMedical Board of California
Search for license A185926Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
65% fewer Medicare Part D claims than the average emergency medicine physician in 2024
79 Medicare Part D claims for 58 beneficiaries, against an average of 226 among the 54,106 providers of this specialty who prescribed in Part D.
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.
Christianna Chorong Sim among 7,751 emergency medicine physician records in California
Christianna Chorong Sim, 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 2018, is newer than 81% of them.
- NPI issued2018 · 81% of these records are older, 15% newer
- In a Medicare fileYes · 81% of these records are
- In the CMS Doctors and Clinicians fileYes · 59% of these records are
- Graduated2018 · median 2011 among the 4,560 with a school on file
- Record last updated2025 · 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 Santa Monica → Emergency Medicine Physician nationwide →
The 8 emergency medicine physician records with the nearest ZIP codes
- Isaac Bash, MDSanta Monica, CA 904041619934643
- Victor Candioty, MDSanta Monica, CA 904041437116472
- Michelle Charfen, M.D.Santa Monica, CA 904041588602486
- Edward Cotner, MDSanta Monica, CA 904041023074044
- Patricia Drum-Lal, PACSanta Monica, CA 904041639136674
- Walid Ghurabi, D.O.Santa Monica, CA 904041073566931
- Daniel Grossman, MDSanta Monica, CA 904041386601326
- Amy Kijner, PASanta Monica, CA 904041235197849
Common questions
What is Christianna Chorong Sim, MD's NPI number?
Christianna Chorong Sim, MD's National Provider Identifier (NPI) is 1396235743, issued on May 11, 2018. An NPI identifies a provider in billing; it is not a license.
Where is Christianna Chorong Sim, MD located?
The NPPES record lists a practice address at 1250 16TH St, Santa Monica, CA, 90404. Phone: (310) 794-0585. Providers update this record themselves, so call before visiting.
How can I verify Christianna Chorong Sim, MD's license?
NPPES lists California license number A185926, 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 Christianna Chorong Sim, MD prescribe under Medicare Part D?
In 2024, Christianna Chorong Sim, MD had 79 Medicare Part D claims for 58 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.