Facial Plast Surg
Adipose TissueAnesthesia, LocalAsian People
Dr. William P. Chen, MD
NPI1558420661PAC ID2163500711
- Medicare services, 2023
- 38
- Medicare patients, 2024
- 28
- Part D claims, 2024
- 111
- Publications
- 5
- Hospital affiliations
- 1
- Practice address
- 2051 Marengo St, Los Angeles, CA 90033
- Practice phone
- Call (323) 409-2800
- Professional email
- Get professional email
- Personal email
- Get personal email
- Mobile number
- Get mobile number
Primary practice
Los Angeles General Medical Center
Los Angeles, California
Find Dr. Chen's professional email, personal email and mobile number
Dmand AI checks each channel through healthcare-specific waterfall enrichment. See what is on file with a free account, with practice phones, licenses and affiliations.
Dr. William P. Chen is an ophthalmic plastic and reconstructive surgery physician in Los Angeles, California
Dr. Chen practices at Los Angeles General Medical Center in Los Angeles, California.
Dr. Chen's NPI, 1558420661, was assigned on December 6, 2006. Dr. Chen graduated from Saint Louis University School Of Medicine in 1976. Dr. Chen's California license number on file is G34389.
NPI and contact details
- NPI
- 1558420661NPI Registry (opens in a new tab)
- Medicare PAC ID
- 2163500711
- NPI enumeration date
- December 6, 2006
- NPI status
- Active
- Accepts Medicare assignment
- Yes
- Practice phone
- (323) 409-2800
- Professional email
- Get email
- Personal email
- Get email
- Mobile number
- Get number
- Sex
- Male
- Estimated age
- 76
- Medical school graduation
- 1976
Sources: NPPES NPI Registry (CMS); Dmand AI Professional Profile Data; Dmand AI Practice Data; and Doctors and Clinicians National Downloadable File (CMS)
Dr. William P. Chen practices at Los Angeles General Medical Center in Los Angeles, California
Dr. Chen's primary practice is Los Angeles General Medical Center, at 2051 Marengo St, Los Angeles, CA 90033 in Los Angeles County. The practice phone is (323) 409-2800.
- Los Angeles General Medical Center2051 Marengo St, Los Angeles, CA 90033 · Los Angeles CountyPhone(323) 409-2800
Sources: NPPES NPI Registry (CMS); and Dmand AI Practice Data
Dr. William P. Chen is affiliated with 3 sites of care
Dr. Chen's primary practice is Los Angeles General Medical Center in Los Angeles, California. Dr. Chen is also affiliated with Harbor-UCLA Medical Center. Dmand AI also links Dr. Chen to 1 more physician office, named with a free account.
Los Angeles General Medical CenterPrimary
Sources: NPPES NPI Registry (CMS); Dmand AI Practice Data; Dmand AI Affiliation Data; and Dmand AI Org Hierarchy Data
Dmand AI tracks the EHR system at Dr. William P. Chen's practice
Dmand AI tracks the electronic health record (EHR) system at each site where Dr. Chen practices, 2 sites in all. Vendor and product names are available with a free account.
| Site | EHR vendor and product |
|---|---|
| Los Angeles General Medical Center | Available with a free account |
| +2 more affiliated sites | Available with a free account |
Source: Dmand AI Technology Install Data
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Dr. William P. Chen is one of 50 ophthalmic plastics and reconstructive surgery physicians in California
Ophthalmic plastic and reconstructive surgery is Dr. Chen's primary specialty in the NPI Registry, under taxonomy code 207WX0200X. Dr. Chen is board certified in ophthalmology by the American Board of Ophthalmology. Dmand AI has Dr. Chen's licenses on file in 3 states: California, Hawaii and Georgia.
Specialties and state licenses
- Ophthalmic plastic and reconstructive surgery, CaliforniaPrimary
- Hawaii license
- Georgia license
Clinical focus
Dmand AI lists conjunctivitis and eyelid inflammation among the conditions Dr. Chen treats.
Ophthalmic plastics and reconstructive surgery physicians near Dr. Chen
Counts of ophthalmic plastics and reconstructive surgery physicians with a Dmand AI profile, by place and practice. Each opens the list.
50ophthalmic plastics and reconstructive surgery physicians in California
6ophthalmic plastics and reconstructive surgery physicians in Los Angeles
Sources: NPPES NPI Registry (CMS); Dmand AI Professional Profile Data; and Dmand AI Peer Benchmarks
Dr. William P. Chen billed Medicare for 38 services in 2023
CMS data shows 38 Medicare services from Dr. Chen across 2 procedure codes in 2023, all of them office visits, for 28 Medicare patients. Medicare paid $4,717 for them. Every service was in an office.
Medicare services, 202338
Medicare patients28
Paid by Medicare$4,717
Procedure codes2
Dr. Chen's Medicare services by type, 2022 to 2023
- 2022
- 2023
- Office and hospital visits
- 2022: 322023: 3819%
Dr. Chen compared with the California median for ophthalmic plastics and reconstructive surgery physicians, 2023
- Dr. Chen
- California median
- Medicare services
- 38vs 66294% below
- Medicare patients
- 28vs 24288% below
- Part D claims
- 48vs 25681% below
Medians across 47 ophthalmic plastics and reconstructive surgery physicians in California with Dmand AI profiles that report each measure.
Dr. Chen's most billed Medicare procedure codes, 2023
CMS publishes codes billed for 11 or more Medicare patients. Each label is the code family; CPT descriptions are licensed by the AMA.
Need commercial claims for Dr. Chen?
Medicare shows one payer. Book a meeting to get commercial claims data for Dr. Chen and other ophthalmic plastics and reconstructive surgery physicians in California.
Sources: Medicare Physician & Other Practitioners - by Provider and Service (CMS), 2024 data; and Dmand AI Peer Benchmarks
Dr. William P. Chen treated 28 Medicare patients in 2024, average age 78
CMS counts 28 Medicare patients who saw Dr. Chen in 2024. The largest group is 65 to 74, with 12 patients. 75% of them have high cholesterol, and 71% have high blood pressure. Their average risk score is 1.20, where 1.00 is the Medicare average.
Across all payers, Dmand AI patient panel data puts Dr. Chen's median patient age at 63, with 55% women.
Medicare patients, 202428
Average age78
Average risk score1.20
Dr. Chen's Medicare patients by age, 2024
CMS leaves out age groups with fewer than 11 patients.
Chronic conditions among Dr. Chen's Medicare patients, 2024
- High cholesterol75%
- High blood pressure71%
Share of Medicare patients with each condition. A patient can have several.
Dr. Chen's patients across all payers
Dmand AI patient panel data covers Medicare, Medicaid and commercial patients.
Patient panel by age, all payers
Median age 63
Patient panel by sex, all payers
- Women55%
- Men43%
Sources: Dmand AI Patient Panel Data; and Medicare Physician & Other Practitioners - by Provider (CMS), 2024 data
Dr. William P. Chen wrote 111 Medicare Part D claims in 2024
In 2024, Dr. Chen wrote 111 Medicare Part D claims for 43 patients. 64% of them were for generic drugs. CMS names the drug for 48 of them, across 1 drug with 11 or more claims each, at $448 in total drug cost. In 2023, CMS named 52 claims across 1 drug.
Part D claims, 2024111
Drugs named by CMS1
Total drug cost$448
Part D patients43
Dr. Chen's Part D claims by kind of drug, 2024
- Generic71 claims64%
- Brand-name40 claims36%
Dr. Chen's most prescribed drugs by claims, 2024
CMS names a drug when it has 11 or more claims. Share is of the claims for drugs CMS names.
Drug classes CMS tracks in Dr. Chen's Part D claims, 2024
- Antibiotics23%26 of 111 claims
Share of all Part D claims for each drug class CMS reports on. Classes with no claims are left out.
Part D claims for drugs CMS names, 2023 to 2024
- 2023
- 2024
- Claims for drugs CMS names
- 2023: 522024: 488%
Drugs named by CMS: 1 in 2024, 1 in 2023.
Sources: Medicare Part D Prescribers - by Provider and Drug (CMS), 2024 data, released May 6, 2026; and Medicare Part D Prescribers - by Provider (CMS), 2024 data
How Dr. William P. Chen takes part in Medicare
Dr. Chen accepts Medicare assignment, so Medicare's approved amount is taken as full payment.
- Accepts Medicare assignment
- Yes
Source: Doctors and Clinicians National Downloadable File (CMS)
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Dr. William P. Chen has 5 publications on record
Dmand AI links 5 papers to Dr. Chen in 2013.
Papers5
Recent publications by Dr. Chen
See who Dr. Chen researches with
Physician Network Discovery turns co-authorship, shared hospitals and shared groups into a map of who Dr. Chen works with, so you can find a warm path to the right ophthalmic plastics and reconstructive surgery physicians.
Sources: PubMed (National Library of Medicine); and Dmand AI Research Linkage
Dr. William P. Chen received $291 in industry payments from 2017 to 2022
CMS Open Payments shows 4 general payments to Dr. Chen from 4 drug and device companies from 2017 to 2022. Food and beverage make up the largest share, 57% of the total. Galderma Laboratories, L.P. paid the most, $145.
General payments to Dr. Chen by program year, 2017 to 2022
General payments to Dr. Chen by kind, 2017 to 2022
$291in total
- Food and beverage$16657%
- Education$12443%
Companies that paid Dr. Chen the most, 2017 to 2022
Share is of all general payments to this clinician.
Source: Open Payments (CMS), 2025 data, released July 7, 2026
Dr. William P. Chen has 5 awards and honors on record
Dmand AI lists 5 awards for Dr. Chen.
Awards and honors for Dr. Chen
- Undated
- AAO Fellow
- Super Doc
- Visiting Professor & Featured Lecturer to the Hong Kong Ophthalmology Society, Hong Kong Board of Plastic Surgery 2005
- Visiting Professor & Invited Featured Speaker, 16th Advanced Aesthetic Plastic Surgery Workshop:Periocular Aesthetic and Reconstructive Surgery 2012
- Visiting Professor & Invited Featured Speaker, First Korean Ocuoplastic Symposium 2003
Source: Dmand AI Professional Profile Data
Dr. William P. Chen graduated from Saint Louis University School Of Medicine
Dr. Chen graduated from Saint Louis University School Of Medicine in 1976. Dr. Chen is a member of AOA and AAO.
- Medical school
- Board certified in ophthalmology
- Board certified in fellow
Source: Dmand AI Professional Profile Data
Dr. William P. Chen accepts plans from 15 insurance carriers
Dr. Chen is in network with 15 carriers, including Aetna, Blue Cross Blue Shield of Michigan and United Healthcare. PPO plans come from the most carriers, 10. Check the plan with the practice before a visit.
- Aetna
- Blue Cross Blue Shield of Michigan
- United Healthcare
- Elevance
- HCSC
- Humana
- Blue Cross Blue Shield of Massachusetts
- Regence Health Plans
- +7 more carriersWith a free account
Plan types Dr. Chen accepts, by number of carriers
- PPO10
- Medicare8
- HMO7
- EPO4
- POS4
Source: Dmand AI Insurance Network Data
Sources for Dr. William P. Chen's profile data
| Data on this page | Source |
|---|---|
| NPI, name, sex, specialty and licenses | NPPES NPI Registry (CMS) (opens in a new tab)Dmand AI Professional Profile Data |
| Practice locations and phone | NPPES NPI Registry (CMS) (opens in a new tab)Dmand AI Practice Data |
| Primary practice, affiliations and health system | NPPES NPI Registry (CMS) (opens in a new tab)Dmand AI Practice DataDmand AI Affiliation DataDmand AI Org Hierarchy Data |
| Medicare services and procedure codes | Medicare Physician & Other Practitioners - by Provider and Service (CMS) (opens in a new tab) |
| State medians for the same specialty | Dmand AI Peer Benchmarks |
| Medicare patients and the all-payer patient panel | Dmand AI Patient Panel DataMedicare Physician & Other Practitioners - by Provider (CMS) (opens in a new tab) |
| Part D prescribing | Medicare Part D Prescribers - by Provider and Drug (CMS) (opens in a new tab)Medicare Part D Prescribers - by Provider (CMS) (opens in a new tab) |
| MIPS scores, telehealth, assignment and procedure percentiles | Doctors and Clinicians National Downloadable File (CMS) (opens in a new tab) |
| Publications, topics and co-authors | PubMed (National Library of Medicine) (opens in a new tab)Dmand AI Research Linkage |
| Industry payments | Open Payments (CMS) (opens in a new tab) |
| Awards and committee roles | Dmand AI Professional Profile Data |
| Training, board certification and memberships | Dmand AI Professional Profile Data |
| Insurance carriers and plan types | Dmand AI Insurance Network Data |
| EHR at each practice site | Dmand AI Technology Install Data |
| Similar physicians | Dmand AI Affiliation Data |
Data last refreshed October 2026Report an inaccuracyRemove my information
FAQ
Frequently asked questions about Dr. William P. Chen
Spotted something out of date? Email hello@dmand.ai and we will check the record. Contact details live in the free trial.
What is Dr. William P. Chen's NPI number?
Dr. William P. Chen's NPI number is 1558420661. It was assigned on December 6, 2006, and it is active in the NPI Registry.
What kind of doctor is Dr. William P. Chen?
Dr. William P. Chen is an ophthalmic plastic and reconstructive surgery physician in Los Angeles, California. The primary specialty in the NPI Registry is Ophthalmic Plastic and Reconstructive Surgery Physician (taxonomy code 207WX0200X).
Where does Dr. William P. Chen practice?
Dr. Chen practices at 2051 Marengo St, Los Angeles, CA 90033. Dr. Chen's primary practice is Los Angeles General Medical Center in Los Angeles, California. Dmand AI also links Dr. Chen to 1 physician office.
What is Dr. William P. Chen's office phone number?
The practice phone on file for Dr. Chen is (323) 409-2800.
What is Dr. William P. Chen's medical license number?
Dr. Chen's California license number on file is G34389, one of the licenses on file in 3 states.
Which states has Dr. William P. Chen been licensed in?
Dmand AI has state licenses on file for Dr. Chen in California (1977 to 2025), Hawaii (1986 to 2018) and Georgia (1979 to 1981).
Which hospitals is Dr. William P. Chen affiliated with?
Dr. Chen is affiliated with Harbor-UCLA Medical Center.
Does Dr. William P. Chen accept Medicare?
Yes. CMS data shows Dr. Chen billed Medicare for 38 services in 2023, and Dr. Chen accepts Medicare assignment.
How many Medicare patients does Dr. William P. Chen see?
CMS counts 28 Medicare patients who saw Dr. Chen in 2024, with an average age of 78.
Is Dr. William P. Chen board certified?
Yes. Dr. Chen is board certified in ophthalmology by the American Board of Ophthalmology.
Show 7 more questionsShow fewer questions
What services does Dr. William P. Chen bill to Medicare?
In 2023, Dr. Chen's most billed Medicare services were office visit, new patient (99205) and office visit, established patient (99213).
Where did Dr. William P. Chen go to medical school?
Dr. Chen graduated from Saint Louis University School Of Medicine in 1976.
What drugs does Dr. William P. Chen prescribe most?
In 2024 Medicare Part D data, Dr. Chen's most prescribed drugs by claims were Neomycin-Polymyxin-Dexameth.
Has Dr. William P. Chen received payments from drug or device companies?
CMS Open Payments shows $291 in general payments to Dr. Chen from 4 companies from 2017 to 2022. The largest total came from Galderma Laboratories, L.P.
How long has Dr. William P. Chen been practicing?
Dr. Chen graduated from medical school in 1976, 50 years ago.
Does Dr. William P. Chen do research?
Dmand AI links 5 publications to Dr. Chen.
What insurance does Dr. William P. Chen accept?
Dr. Chen is in network with 15 carriers, including Aetna, Blue Cross Blue Shield of Michigan and United Healthcare. PPO plans come from the most carriers, 10. Check the plan with the practice before a visit.
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