Elaine Y. Chien, MD
Obstetrics & Gynecology Physician · Redwood City, CA
Elaine Y. Chien, MD is an obstetrics & gynecology physician with a practice address in Redwood City, California, and NPI 1457423295, issued on Nov 15, 2006. Check the license (California A67860, as entered in NPPES) on the Medical Board of California; the federal record below is the public data PlainDoctor holds for this provider.
- Name
- Elaine Y. Chien
- Credential
- MD
- Primary taxonomy
- Obstetrics & Gynecology Physician 207V00000X
- License number
- A67860 CA
Self-reported in NPPES; status is on the state search - Practice location
- 2900 Whipple Ave, Redwood City, CA 94062
- Phone
- (650) 366-5594
- Enumerated
- Nov 15, 2006
- Record last updated
- Feb 28, 2012 (not updated in 14 years: call before relying on the address or phone)
- Fax
- (650) 366-6352
- Medicaid ID
- 00A678600 CA
- Entity
- Type 1 · individual
Also registered at 2900 Whipple Ave
A shared address usually means a shared clinic or building; it does not show who employs whom.
- Gary Aron, M.D.Internal Medicine Physician1619984911
- Kathleen Berra, N.P.Nurse Practitioner1386698520
- Shalini Bhambani, M.D.Cardiovascular Disease Physician1558635474
- Barrett Bryan, MDInternal Medicine Physician1033133954
- Luis Castro, M.D.Thoracic Surgery (Cardiothoracic Vascular Surgery) Physician1679587893
- Matthew Dillon, P.A.Physician Assistant1952349284
Verify Elaine Y. Chien in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersMedical Board of California
Search for license A67860Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
Obstetrics & Gynecology Physician providers in California
There are 5,088 obstetrics & gynecology physician records in California. No Medicare prescribing, quality score, industry payment or hospital affiliation is published for this NPI.
Other obstetrics & gynecology physician records in California
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- Alireza Abdollah Shamshirsaz, M.D.Palo Alto, CA1881804235
- Nicole Abell, DOVentura, CA1811243603
- Zachary AbelsonLos Angeles, CA1689237414
- Ray Abinader, M.D.Loma Linda, CA1770901548
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- Nada Abou-HaibaLos Angeles, CA1134067549
Common questions
What is Elaine Y. Chien, MD's NPI number?
Elaine Y. Chien, MD's National Provider Identifier (NPI) is 1457423295, issued on Nov 15, 2006. An NPI identifies a provider in billing; it is not a license.
Where is Elaine Y. Chien, MD located?
The NPPES record lists a practice address at 2900 Whipple Ave, Redwood City, CA, 94062. Phone: (650) 366-5594. Providers update this record themselves, so call before visiting.
How can I verify Elaine Y. Chien, MD's license?
NPPES lists California license number A67860, 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. 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.