William P. Chen, MD
Ophthalmic Plastic and Reconstructive Surgery Physician · Irvine, CA
William P. Chen, MD is an ophthalmic plastic and reconstructive surgery physician with a practice address in Irvine, California, and NPI 1558420661, issued on Dec 6, 2006. Check the license (California G34389, as entered in NPPES) on the Medical Board of California; the Medicare figures below come from public CMS files.
- Name
- William P. Chen
- Credential
- MD
- Primary taxonomy
- Ophthalmic Plastic and Reconstructive Surgery Physician 207WX0200X
- License number
- G34389 CA
Self-reported in NPPES; status is on the state search - Practice location
- 18 Endeavor Ste 305, Irvine, CA 92618
- Phone
- (949) 585-5188
- Enumerated
- Dec 6, 2006
- Record last updated
- Jan 24, 2022
- Fax
- (949) 288-0252
- Medicare enrollment
- Enrolled (PECOS I20080422000674); accepts Medicare assignment
- Medical or professional school
- Saint Louis University School Of Medicine, 1976
- Entity
- Type 1 · individual
Verify William P. Chen in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersMedical Board of California
Search for license G34389Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
80% fewer Medicare Part D claims than the average ophthalmic plastic and reconstructive surgery physician in 2024
111 Medicare Part D claims for 43 beneficiaries, against an average of 544 among the 409 providers of this specialty who prescribed in Part D. Brand-name drugs were 36% of claims.
Most prescribed
- Neomycin-Polymyxin-Dexameth48 claims
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.
Ophthalmic Plastic and Reconstructive Surgery Physician providers in California
There are 54 ophthalmic plastic and reconstructive surgery physician records in California.
Other ophthalmic plastic and reconstructive surgery physician records in California
- Eric Ahn, MDLos Angeles, CA1841457652
- Lina Amini, M.D.Chula Vista, CA1063625374
- Mica Bergman, M.D., PH.D.Santa Barbara, CA1912268996
- Carlo Bernardino, MDSalinas, CA1770549412
- Nicolas Biro, MDWest Covina, CA1497959332
- Harinderpal Chahal, M.D.Bakersfield, CA1942580253
- Joseph Chang, MDBakersfield, CA1306959259
- Atif Collins, M.D.Fresno, CA1891010948
- Jordan Conger, M.D.Los Angeles, CA1861925026
- Dawn Marie De Castro-Marceau, M.D.Santee, CA1629275912
Common questions
What is William P. Chen, MD's NPI number?
William P. Chen, MD's National Provider Identifier (NPI) is 1558420661, issued on Dec 6, 2006. An NPI identifies a provider in billing; it is not a license.
Where is William P. Chen, MD located?
The NPPES record lists a practice address at 18 Endeavor Ste 305, Irvine, CA, 92618. Phone: (949) 585-5188. Providers update this record themselves, so call before visiting.
How can I verify William P. Chen, MD's license?
NPPES lists California license number G34389, 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 William P. Chen, MD prescribe under Medicare Part D?
In 2024, William P. Chen, MD had 111 Medicare Part D claims for 43 beneficiaries; the average among ophthalmic plastic and reconstructive surgery physician prescribers was 544. 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.