Dr. Teresa Hsiao-Tien Chen, MD
- Medicare services, 2024
- 45
- Medicare patients, 2024
- 73
- Part D claims, 2024
- 615
- Publications
- 5
- Hospital affiliations
- 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. Teresa Hsiao-Tien Chen is an ophthalmologist 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, 1679034367, was assigned on March 26, 2019. Dr. Chen graduated from WashU Medicine in 2019. Dr. Chen holds California license A179524.
- NPI
- 1679034367NPI Registry (opens in a new tab)
- Medicare PAC ID
- 5496111296
- NPI enumeration date
- March 26, 2019
- NPI status
- Active
- Accepts Medicare assignment
- Yes
- Practice phone
- (310) 325-5111
- Professional email
- Get email
- Personal email
- Get email
- Mobile number
- Get number
- Sex
- Female
- Estimated age
- 33
- Medical school graduation
- 2019
Sources: NPPES NPI Registry (CMS); Dmand AI Professional Profile Data; Dmand AI Affiliation Data; and Doctors and Clinicians National Downloadable File (CMS)
Dr. Teresa Hsiao-Tien 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. Teresa Hsiao-Tien Chen is affiliated with 3 sites of care and 2 medical groups
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. Dmand AI also links Dr. Chen to 2 more group practices and clinics and 1 medical group, each named with a free account.
Sources: Dmand AI Affiliation Data; and Dmand AI Org Hierarchy Data
Dmand AI tracks the EHR system at Dr. Teresa Hsiao-Tien 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 |
|---|---|
| Kaiser Permanente South Bay Medical Center | Available with a free account |
| +2 more sites and 1 medical group | Available with a free account |
Source: Dmand AI Technology Install Data
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Dr. Teresa Hsiao-Tien Chen is one of 2,621 ophthalmologists in California
Ophthalmology is Dr. Chen's primary specialty in the NPI Registry, under taxonomy code 207W00000X. Dr. Chen is board certified in ophthalmology by the American Board of Ophthalmology. Dr. Chen is licensed in California.
Specialties and state licenses
- Ophthalmology, CaliforniaPrimary
Ophthalmologists near Dr. Chen
Counts of ophthalmologists 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. Teresa Hsiao-Tien Chen billed Medicare for 45 services in 2024
CMS data shows 45 Medicare services from Dr. Chen across 3 procedure codes in 2024, for 73 Medicare patients. Medicare paid $4,876 for them.
Dr. Chen's Medicare services by type, 2024
- Surgery34
- Office and hospital visits11
Where Dr. Chen's Medicare services took place, 2024
- In an office2351%
- In a facility2249%
Dr. Chen compared with the California median for ophthalmologists, 2024
- Dr. Chen
- California median
- Medicare services
- 45vs 1,07996% below
- Medicare patients
- 73vs 42183% below
- Part D claims
- 538vs 61813% below
Medians across 2,568 ophthalmologists in California with Dmand AI profiles that report each measure.
Dr. Chen's most billed Medicare procedure codes, 2024
CMS publishes codes billed for 11 or more Medicare patients. Each label is the code family; CPT descriptions are licensed by the AMA.
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Medicare shows one payer. Book a meeting to get commercial claims data for Dr. Chen and other ophthalmologists in California.
Sources: Medicare Physician & Other Practitioners - by Provider and Service (CMS), 2024 data; and Dmand AI Peer Benchmarks
Dr. Teresa Hsiao-Tien Chen treated 73 Medicare patients in 2024, average age 75
CMS counts 73 Medicare patients who saw Dr. Chen in 2024. The largest group is 75 to 84, with 31 patients. 75% of them have high blood pressure, and 75% have high cholesterol. 44% are also on Medicaid. Their average risk score is 1.39, where 1.00 is the Medicare average.
Across all payers, Dmand AI patient panel data puts Dr. Chen's median patient age at 59, with 58% women.
Dr. Chen's Medicare patients by age, 2024
CMS leaves out age groups with fewer than 11 patients.
Dr. Chen's Medicare patients by sex, 2024
- Women4967%
- Men2433%
Chronic conditions among Dr. Chen's Medicare patients, 2024
- High blood pressure75%
- High cholesterol75%
- Arthritis55%
- Diabetes40%
- Chronic kidney disease30%
- Ischemic heart disease27%
- Osteoporosis23%
- Cancer22%
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 59
Patient panel by sex, all payers
- Women58%
- Men41%
Sources: Dmand AI Patient Panel Data; and Medicare Physician & Other Practitioners - by Provider (CMS), 2024 data
Dr. Teresa Hsiao-Tien Chen wrote 615 Medicare Part D claims in 2024
In 2024, Dr. Chen wrote 615 Medicare Part D claims for 399 patients. 92% of them were for generic drugs. CMS names the drug for 538 of them, across 3 drugs with 11 or more claims each, at $4,907 in total drug cost. In 2023, CMS named 386 claims across 8 drugs.
Dr. Chen's Part D claims by kind of drug, 2024
- Generic568 claims92%
- Brand-name47 claims8%
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
- Opioids9%58 of 615 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: 3862024: 53839%
Drugs named by CMS: 3 in 2024, 8 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. Teresa Hsiao-Tien 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. Teresa Hsiao-Tien Chen has 5 publications on record
Dmand AI links 5 papers to Dr. Chen, published from 2018 to 2024. 2024 was the busiest year, with 2. Dr. Chen's most frequent co-authors are Jeremiah P. Tao, MD, Natalie A. Afshari, MD and Rajendra Shridhar Apte, MD.
Dr. Chen's papers by year, 2018 to 2024
Dr. Chen's most frequent co-authors
- Jeremiah P. Tao, MD3 shared papers
- Natalie A. Afshari, MD1 shared paper
- Rajendra Shridhar Apte, MD1 shared paper
Recent publications by Dr. Chen
Ophthalmic Plast Reconstr Surg
Can J Ophthalmol
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 ophthalmologists.
Sources: PubMed (National Library of Medicine); and Dmand AI Research Linkage
Dr. Teresa Hsiao-Tien Chen received $1,639 in industry payments from 2022 to 2025
CMS Open Payments shows 20 general payments to Dr. Chen from 7 drug and device companies from 2022 to 2025. Food and beverage make up the largest share, 80% of the total. Alcon Laboratories Inc paid the most, $597.
General payments to Dr. Chen by program year, 2022 to 2025
General payments to Dr. Chen by kind, 2022 to 2025
- Food and beverage$1,31180%
- Education$32820%
Companies that paid Dr. Chen the most, 2022 to 2025
Share is of all general payments to this clinician.
Source: Open Payments (CMS), 2025 data, released July 7, 2026
Dr. Teresa Hsiao-Tien Chen graduated from WashU Medicine
Dr. Chen graduated from WashU Medicine in 2019.
- Medical school
- Board certified in ophthalmology
Source: Dmand AI Professional Profile Data
Dr. Teresa Hsiao-Tien Chen accepts plans from 13 insurance carriers
Dr. Chen is in network with 13 carriers, including Blue Cross Blue Shield of Michigan, Elevance and United Healthcare. PPO plans come from the most carriers, 8. Check the plan with the practice before a visit.
- Blue Cross Blue Shield of Michigan
- Elevance
- United Healthcare
- HCSC
- Blue Cross Blue Shield of Massachusetts
- Regence Health Plans
- Aetna
- Alliant Health Plans
- +5 more carriersWith a free account
Plan types Dr. Chen accepts, by number of carriers
- PPO8
- Medicare7
- HMO6
- EPO3
- POS2
Source: Dmand AI Insurance Network Data
Sources for Dr. Teresa Hsiao-Tien 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 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) |
| 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. Teresa Hsiao-Tien 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. Teresa Hsiao-Tien Chen's NPI number?
Dr. Teresa Hsiao-Tien Chen's NPI number is 1679034367. It was assigned on March 26, 2019, and it is active in the NPI Registry.
What kind of doctor is Dr. Teresa Hsiao-Tien Chen?
Dr. Teresa Hsiao-Tien Chen is an ophthalmologist in Harbor City, California. The primary specialty in the NPI Registry is Ophthalmology Physician (taxonomy code 207W00000X).
Where does Dr. Teresa Hsiao-Tien 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. Dmand AI also links Dr. Chen to 2 group practices and clinics and 1 medical group.
What is Dr. Teresa Hsiao-Tien Chen's office phone number?
The practice phone on file for Dr. Chen is (310) 325-5111.
What is Dr. Teresa Hsiao-Tien Chen's medical license number?
Dr. Chen holds California license A179524.
Which hospitals is Dr. Teresa Hsiao-Tien Chen affiliated with?
Dr. Chen practices at Kaiser Permanente South Bay Medical Center in Harbor City, California.
What medical group is Dr. Teresa Hsiao-Tien Chen part of?
Dr. Chen is linked to Southern California Permanente Medical Group. Dmand AI links Dr. Chen to 1 more medical group.
Does Dr. Teresa Hsiao-Tien Chen accept Medicare?
Yes. CMS data shows Dr. Chen billed Medicare for 45 services in 2024, and Dr. Chen accepts Medicare assignment.
How many Medicare patients does Dr. Teresa Hsiao-Tien Chen see?
CMS counts 73 Medicare patients who saw Dr. Chen in 2024, with an average age of 75.
Is Dr. Teresa Hsiao-Tien Chen board certified?
Yes. Dr. Chen is board certified in ophthalmology by the American Board of Ophthalmology.
Show 8 more questionsShow fewer questions
What services does Dr. Teresa Hsiao-Tien Chen bill to Medicare?
In 2024, Dr. Chen's most billed Medicare services were surgery: eye (68720), surgery: heart and blood vessels (37609) and office visit, established patient (99213).
Where did Dr. Teresa Hsiao-Tien Chen go to medical school?
Dr. Chen graduated from WashU Medicine in 2019.
What drugs does Dr. Teresa Hsiao-Tien Chen prescribe most?
In 2024 Medicare Part D data, Dr. Chen's most prescribed drugs by claims were Erythromycin, Neomycin-Polymyxin-Dexameth and Hydrocodone-Acetaminophen.
Has Dr. Teresa Hsiao-Tien Chen received payments from drug or device companies?
CMS Open Payments shows $1,639 in general payments to Dr. Chen from 7 companies from 2022 to 2025. The largest total came from Alcon Laboratories Inc.
How long has Dr. Teresa Hsiao-Tien Chen been practicing?
Dr. Chen graduated from medical school in 2019, 7 years ago.
Does Dr. Teresa Hsiao-Tien Chen do research?
Dmand AI links 5 publications to Dr. Chen, published from 2018 to 2024.
Who does Dr. Teresa Hsiao-Tien Chen publish with?
Dr. Chen's most frequent co-authors are Jeremiah P. Tao, MD (3 shared papers), Natalie A. Afshari, MD (1 shared paper) and Rajendra Shridhar Apte, MD (1 shared paper).
What insurance does Dr. Teresa Hsiao-Tien Chen accept?
Dr. Chen is in network with 13 carriers, including Blue Cross Blue Shield of Michigan, Elevance and United Healthcare. PPO plans come from the most carriers, 8. Check the plan with the practice before a visit.
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