Catherine Chien, MD
Infectious Disease Physician · Los Angeles, CA
Catherine Chien, MD is an infectious disease physician with a practice address in Los Angeles, California, and NPI 1215928460, issued on Nov 4, 2005. Check the license (California A74698, as entered in NPPES) on the Medical Board of California; the Medicare figures below come from public CMS files.
- Name
- Catherine Chien
- Credential
- MD
- Primary taxonomy
- Infectious Disease Physician 207RI0200X
- License number
- A74698 CA
Self-reported in NPPES; status is on the state search - Practice location
- 1414 S Grand Ave, Los Angeles, CA 90015
- Phone
- (213) 741-9727
- Enumerated
- Nov 4, 2005
- Record last updated
- Jul 13, 2026
- Fax
- (213) 741-0867
- Medicaid ID
- 00A746980 CA
- Entity
- Type 1 · individual
8 nearest infectious disease physician records → All 1,119 in California → Look up another NPI →
Also registered at 1414 S Grand Ave
A shared address usually means a shared clinic or building; it does not show who employs whom.
- Samer Alnajjar, MDPlastic Surgery Physician1609817659
- Pouya Bahrami, DOInternal Medicine Physician1871526301
- Khiabet CoronaPhysician Assistant1982431920
- Natasha Dadour, MPAS, MPH, PA-CPhysician Assistant1962887869
- Mark Davis, DDSDentist1306839162
- John Holly, M.D.Neurological Surgery Physician1851490387
Verify Catherine Chien in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersMedical Board of California
Search for license A74698Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
Industry payments in 2024: $21.08
1 payment: food and beverage; the largest payer was Hologic Sales and Service, LLC. The 3,895 providers of this specialty with any payment received $4,362.19 on average. Payments are reported by manufacturers, not by the provider, and are not a sign of wrongdoing.
Source: CMS Open Payments, program year 2024 (openpaymentsdata.cms.gov); average among providers of this specialty with at least one payment.
Catherine Chien among 1,119 infectious disease physician records in California
Catherine Chien, MD is one of 1,119 infectious disease physician records with a practice address in California. 79% of them appear in a Medicare file (Part D prescribing, MIPS, Open Payments or Medicare group billing); this one does. Its NPI, issued in 2005, is newer than 0% of them.
- NPI issued2005 · 0% of these records are older, 96% newer
- In a Medicare fileYes · 79% of these records are
- In the CMS Doctors and Clinicians fileNo · 66% of these records are
- Record last updated2026 · 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 207RI0200X and a California practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
Infectious Disease Physician providers in California
There are 1,119 infectious disease physician records in California.
All 1,119 in California → Every provider in Los Angeles → Infectious Disease Physician nationwide →
The 8 infectious disease physician records with the nearest ZIP codes
- Jong Huang, M.D.Los Angeles, CA 900171235233461
- Rachel CivenLos Angeles, CA 900121154787919
- Moon KimLos Angeles, CA 900121942008750
- Kitty Lam, MDLos Angeles, CA 900121265493563
- Sheree Poitier, M.D.Los Angeles, CA 900121952421075
- Steven Hwang, M.D.Los Angeles, CA 900191235334749
- David Rhew, M.D.Los Angeles, CA 900191992900815
- Zin Oo, M.D.Los Angles, CA 900221265744999
Common questions
What is Catherine Chien, MD's NPI number?
Catherine Chien, MD's National Provider Identifier (NPI) is 1215928460, issued on Nov 4, 2005. An NPI identifies a provider in billing; it is not a license.
Where is Catherine Chien, MD located?
The NPPES record lists a practice address at 1414 S Grand Ave, Los Angeles, CA, 90015. Phone: (213) 741-9727. Providers update this record themselves, so call before visiting.
How can I verify Catherine Chien, MD's license?
NPPES lists California license number A74698, 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.
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.