Dr. David Hao Chen, MD
- Part D claims, 2024
- 318
- Hospital affiliations
- 2
- Industry payments
- $374
- Medical group
- 1
- Insurance carriers
- 3
- Practice address
- 11500 Brookshire Avenue, Downey, CA 90241
- Practice phone
- Call (562) 904-5000
- Professional email
- Get professional email
- Personal email
- Get personal email
- Mobile number
- Get mobile number
Primary practice
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. David Hao Chen is an internist in Downey, California
Dr. Chen practices at PIH Health Downey Hospital in Downey, California, part of PIH Health.
Dr. Chen's NPI, 1295315489, was assigned on April 12, 2021. Dr. Chen attended The University of Queensland Medical School. Dr. Chen holds California license A195013.
- NPI
- 1295315489NPI Registry (opens in a new tab)
- NPI enumeration date
- April 12, 2021
- NPI status
- Active
- Practice phone
- (562) 904-5000
- Professional email
- Get email
- Personal email
- Get email
- Mobile number
- Get number
- Sex
- Male
- Estimated age
- 32
Sources: NPPES NPI Registry (CMS); Dmand AI Professional Profile Data; and Dmand AI Affiliation Data
Dr. David Hao Chen practices at PIH Health Downey Hospital in Downey, California
Dr. Chen's primary practice is PIH Health Downey Hospital, at 11500 Brookshire Avenue, Downey, CA 90241 in Los Angeles County. The practice phone is (562) 904-5000.
- PIH Health Downey Hospital11500 Brookshire Avenue, Downey, CA 90241 · Los Angeles CountyPhone(562) 904-5000
Source: Dmand AI Affiliation Data
Dr. David Hao Chen is affiliated with 3 sites of care and 1 medical group
Dr. Chen's primary practice is PIH Health Downey Hospital in Downey, California, part of PIH Health. Dr. Chen is also affiliated with UCI Health - Lakewood. The medical group on file is Optum - Downtown Los Angeles. Dmand AI also links Dr. Chen to 1 more group practice or clinic, named with a free account.
Sources: Dmand AI Affiliation Data; and Dmand AI Org Hierarchy Data
Dmand AI tracks the EHR system at Dr. David Hao Chen's practice
Dmand AI tracks the electronic health record (EHR) system at each site where Dr. Chen practices, 3 sites in all. Vendor and product names are available with a free account.
| Site | EHR vendor and product |
|---|---|
| PIH Health Downey Hospital | Available with a free account |
| +2 more affiliated sites | Available with a free account |
Source: Dmand AI Technology Install Data
For health IT teams
Dmand AI maps EHR vendors, IT decision makers and buying committees across PIH Health and 6.2K+ hospitals, with verified contacts in the same login.
Dr. David Hao Chen is one of 16,751 internists in California
Internal medicine is Dr. Chen's primary specialty in the NPI Registry, under taxonomy code 207R00000X. Dmand AI has Dr. Chen's licenses on file in 2 states: California and Hawaii.
Specialties and state licenses
- Internal medicine, CaliforniaPrimary
- Hawaii license
Internists near Dr. Chen
Counts of internists with a Dmand AI profile, by place and practice. Each opens the list.
Sources: NPPES NPI Registry (CMS); Dmand AI Professional Profile Data; and Dmand AI Peer Benchmarks
Dr. David Hao Chen's patients have a median age of 74
Across all payers, Dmand AI patient panel data puts Dr. Chen's median patient age at 74, with 51% women.
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 74
Patient panel by sex, all payers
- Women51%
- Men49%
Source: Dmand AI Patient Panel Data
Dr. David Hao Chen wrote 318 Medicare Part D claims in 2024
In 2024, Dr. Chen wrote 318 Medicare Part D claims for 102 patients. 81% of them were for generic drugs. CMS names the drug for 144 of them, across 9 drugs with 11 or more claims each, at $14,197 in total drug cost. In 2023, CMS named 110 claims across 7 drugs.
Dr. Chen's Part D claims by kind of drug, 2024
- Generic258 claims81%
- Brand-name and other60 claims19%
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
- Antibiotics12%39 of 318 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: 1102024: 14431%
Drugs named by CMS: 9 in 2024, 7 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
For MedTech and pharma teams
Filter 7.4M+ HCPs by Medicare procedures, Part D drugs and Open Payments history, then reach them with verified contacts in one login.
Dr. David Hao Chen received $374 in industry payments in 2025
CMS Open Payments shows 6 general payments to Dr. Chen from 2 drug and device companies in 2025. Food and beverage make up the largest share, 100% of the total. Medtronic, Inc. paid the most, $202.
Companies that paid Dr. Chen the most, 2025 to 2025
Share is of all general payments to this clinician.
Source: Open Payments (CMS), 2025 data, released July 7, 2026
Dr. David Hao Chen graduated from The University of Queensland Medical School
Dr. Chen attended The University of Queensland Medical School.
- Medical school
Source: Dmand AI Professional Profile Data
Dr. David Hao Chen accepts plans from 3 insurance carriers
Dr. Chen is in network with 3 carriers, including Blue Cross Blue Shield of Michigan, Blue Cross Blue Shield of Massachusetts and HCSC. Medicare plans come from the most carriers, 3. Check the plan with the practice before a visit.
- Blue Cross Blue Shield of Michigan
- Blue Cross Blue Shield of Massachusetts
- HCSC
Plan types Dr. Chen accepts, by number of carriers
- Medicare3
- PPO3
- HMO1
- POS1
Source: Dmand AI Insurance Network Data
Sources for Dr. David Hao 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 | Dmand AI Affiliation Data |
| Primary practice, affiliations and health system | Dmand AI Affiliation DataDmand AI Org Hierarchy Data |
| Medicare patients and the all-payer patient panel | Dmand AI Patient Panel Data |
| 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) |
| Industry payments | Open Payments (CMS) (opens in a new tab) |
| 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. David Hao 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. David Hao Chen's NPI number?
Dr. David Hao Chen's NPI number is 1295315489. It was assigned on April 12, 2021, and it is active in the NPI Registry.
What kind of doctor is Dr. David Hao Chen?
Dr. David Hao Chen is an internist in Downey, California. The primary specialty in the NPI Registry is Internal Medicine Physician (taxonomy code 207R00000X).
Where does Dr. David Hao Chen practice?
Dr. Chen practices at 11500 Brookshire Avenue, Downey, CA 90241. Dr. Chen's primary practice is PIH Health Downey Hospital in Downey, California, part of PIH Health. Dmand AI also links Dr. Chen to 1 group practice or clinic.
What is Dr. David Hao Chen's office phone number?
The practice phone on file for Dr. Chen is (562) 904-5000.
What is Dr. David Hao Chen's medical license number?
Dr. Chen holds California license A195013, one of the licenses on file in 2 states.
Which states has Dr. David Hao Chen been licensed in?
Dmand AI has state licenses on file for Dr. Chen in California (2024 to 2026) and Hawaii (2022 to 2026).
Which hospitals is Dr. David Hao Chen affiliated with?
Dr. Chen practices at PIH Health Downey Hospital in Downey, California. Dr. Chen is also affiliated with UCI Health - Lakewood.
What medical group is Dr. David Hao Chen part of?
Dr. Chen is linked to Optum - Downtown Los Angeles.
Where did Dr. David Hao Chen go to medical school?
Dr. Chen attended The University of Queensland Medical School.
What drugs does Dr. David Hao Chen prescribe most?
In 2024 Medicare Part D data, Dr. Chen's most prescribed drugs by claims were Atorvastatin Calcium, Amlodipine Besylate and Losartan Potassium.
Show 3 more questionsShow fewer questions
Has Dr. David Hao Chen received payments from drug or device companies?
CMS Open Payments shows $374 in general payments to Dr. Chen from 2 companies from 2025 to 2025. The largest total came from Medtronic, Inc.
How long has Dr. David Hao Chen been practicing?
Dr. Chen's NPI was assigned in 2021.
What insurance does Dr. David Hao Chen accept?
Dr. Chen is in network with 3 carriers, including Blue Cross Blue Shield of Michigan, Blue Cross Blue Shield of Massachusetts and HCSC. Medicare plans come from the most carriers, 3. Check the plan with the practice before a visit.
Selling to internal medicine practices?
See internists in California by site of care and group
Find the practices, groups and hospitals they work with, and the right people to contact at each.
- 30 days free
- Self-serve
- No credit card