Dr. Agnes En Ya Chen, DO
- Medicare patients, 2024
- 11
- Part D claims, 2024
- 3,807
- Hospital affiliations
- 1
- Industry payments
- $50
- Medical group
- 1
- Practice address
- 25825 South Vermont Avenue, Harbor City, CA 90710
- Practice phone
- Call (310) 325-5111
- 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. Agnes En Ya Chen is a family medicine physician in Harbor City, California
Dr. Chen practices at Kaiser Permanente South Bay Medical Center in Harbor City, California, part of Kaiser Permanente.
Dr. Chen's NPI, 1205908787, was assigned on November 14, 2006. Dr. Chen graduated from Mid West Medical College in 2001. Dr. Chen holds California license 20A8278.
- NPI
- 1205908787NPI Registry (opens in a new tab)
- Medicare PAC ID
- 4688631773
- NPI enumeration date
- November 14, 2006
- NPI status
- Active
- Accepts Medicare assignment
- Yes
- Offers telehealth
- Yes
- Practice phone
- (310) 325-5111
- Professional email
- Get email
- Personal email
- Get email
- Mobile number
- Get number
- Sex
- Female
- Estimated age
- 51
- Medical school graduation
- 2001
Sources: NPPES NPI Registry (CMS); Dmand AI Professional Profile Data; Dmand AI Affiliation Data; and Doctors and Clinicians National Downloadable File (CMS)
Dr. Agnes En Ya Chen practices at Kaiser Permanente South Bay Medical Center in Harbor City, California
Dr. Chen's primary practice is Kaiser Permanente South Bay Medical Center, at 25825 South Vermont Avenue, Harbor City, CA 90710 in Los Angeles County. The practice phone is (310) 325-5111.
- Kaiser Permanente South Bay Medical Center25825 South Vermont Avenue, Harbor City, CA 90710 · Los Angeles CountyPhone(310) 325-5111
Source: Dmand AI Affiliation Data
Dr. Agnes En Ya Chen is affiliated with 1 site of care and 1 medical group
Dr. Chen's primary practice is Kaiser Permanente South Bay Medical Center in Harbor City, California, part of Kaiser Permanente. The medical group on file is Southern California Permanente Medical Group.
Sources: Dmand AI Affiliation Data; and Dmand AI Org Hierarchy Data
Dmand AI tracks the EHR system at Dr. Agnes En Ya Chen's practice
Dmand AI tracks the electronic health record (EHR) system at each site where Dr. Chen practices. Vendor and product names are available with a free account.
| Site | EHR vendor and product |
|---|---|
| Kaiser Permanente South Bay Medical Center | Available with a free account |
Source: Dmand AI Technology Install Data
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Dr. Agnes En Ya Chen is one of 15,680 family medicine physicians in California
Family medicine is Dr. Chen's primary specialty in the NPI Registry, under taxonomy code 207Q00000X. Dr. Chen is licensed in California.
Specialties and state licenses
- Family medicine, CaliforniaPrimary
Family medicine physicians near Dr. Chen
Counts of family medicine physicians 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. Agnes En Ya Chen treated 11 Medicare patients in 2024, average age 64
CMS counts 11 Medicare patients who saw Dr. Chen in 2024. The largest group is 85 and over, with 0 patients. Their average risk score is 2.50, where 1.00 is the Medicare average, so they are sicker than most Medicare patients.
Across all payers, Dmand AI patient panel data puts Dr. Chen's median patient age at 51, with 76% women.
Dr. Chen's Medicare patients by age, 2024
CMS leaves out age groups with fewer than 11 patients.
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 51
Patient panel by sex, all payers
- Women76%
- Men24%
Sources: Dmand AI Patient Panel Data; and Medicare Physician & Other Practitioners - by Provider (CMS), 2024 data
Dr. Agnes En Ya Chen wrote 3,807 Medicare Part D claims in 2024
In 2024, Dr. Chen wrote 3,807 Medicare Part D claims for 692 patients. 92% of them were for generic drugs. CMS names the drug for 3,307 of them, across 69 drugs with 11 or more claims each, at $110,203 in total drug cost. In 2023, CMS named 3,220 claims across 71 drugs.
Dr. Chen's Part D claims by kind of drug, 2024
- Generic3,496 claims92%
- Brand-name277 claims7%
- Other34 claims1%
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
- Opioids3%131 of 3,807 claims
- Antibiotics1%52 of 3,807 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: 3,2202024: 3,3073%
Drugs named by CMS: 69 in 2024, 71 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
Dr. Agnes En Ya Chen offers telehealth to Medicare patients
Dr. Chen accepts Medicare assignment, so Medicare's approved amount is taken as full payment. CMS lists Dr. Chen as offering telehealth.
- Accepts Medicare assignment
- Yes
- Offers telehealth
- Yes
Source: Doctors and Clinicians National Downloadable File (CMS)
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Dr. Agnes En Ya Chen received $50 in industry payments in 2016
CMS Open Payments shows 1 general payment to Dr. Chen from 1 drug or device company in 2016. Food and beverage make up the largest share, 100% of the total. Janssen Pharmaceuticals, Inc paid the most, $50.
Companies that paid Dr. Chen the most, 2016 to 2016
Share is of all general payments to this clinician.
Source: Open Payments (CMS), 2025 data, released July 7, 2026
Dr. Agnes En Ya Chen graduated from Mid West Medical College
Dr. Chen graduated from Mid West Medical College in 2001.
- Medical school
Source: Dmand AI Professional Profile Data
Sources for Dr. Agnes En Ya 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 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) |
| Industry payments | Open Payments (CMS) (opens in a new tab) |
| Training, board certification and memberships | Dmand AI Professional Profile 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. Agnes En Ya 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. Agnes En Ya Chen's NPI number?
Dr. Agnes En Ya Chen's NPI number is 1205908787. It was assigned on November 14, 2006, and it is active in the NPI Registry.
What kind of doctor is Dr. Agnes En Ya Chen?
Dr. Agnes En Ya Chen is a family medicine physician in Harbor City, California. The primary specialty in the NPI Registry is Family Medicine Physician (taxonomy code 207Q00000X).
Where does Dr. Agnes En Ya Chen practice?
Dr. Chen practices at 25825 South Vermont Avenue, Harbor City, CA 90710. Dr. Chen's primary practice is Kaiser Permanente South Bay Medical Center in Harbor City, California, part of Kaiser Permanente.
What is Dr. Agnes En Ya Chen's office phone number?
The practice phone on file for Dr. Chen is (310) 325-5111.
What is Dr. Agnes En Ya Chen's medical license number?
Dr. Chen holds California license 20A8278.
Which hospitals is Dr. Agnes En Ya Chen affiliated with?
Dr. Chen practices at Kaiser Permanente South Bay Medical Center in Harbor City, California.
What medical group is Dr. Agnes En Ya Chen part of?
Dr. Chen is linked to Southern California Permanente Medical Group.
Does Dr. Agnes En Ya Chen accept Medicare?
Yes. CMS lists Dr. Chen as accepting Medicare assignment.
Does Dr. Agnes En Ya Chen offer telehealth?
Yes. The CMS Doctors and Clinicians file lists Dr. Chen as offering telehealth services.
How many Medicare patients does Dr. Agnes En Ya Chen see?
CMS counts 11 Medicare patients who saw Dr. Chen in 2024, with an average age of 64.
Show 4 more questionsShow fewer questions
Where did Dr. Agnes En Ya Chen go to medical school?
Dr. Chen graduated from Mid West Medical College in 2001.
What drugs does Dr. Agnes En Ya 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.
Has Dr. Agnes En Ya Chen received payments from drug or device companies?
CMS Open Payments shows $50 in general payments to Dr. Chen from 1 company from 2016 to 2016. The largest total came from Janssen Pharmaceuticals, Inc.
How long has Dr. Agnes En Ya Chen been practicing?
Dr. Chen graduated from medical school in 2001, 25 years ago.
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