Dr. Lillian Tseng, MD
- Medicare services, 2024
- 24
- Medicare patients, 2024
- 16
- Part D claims, 2018
- 16
- Publications
- 4
- Hospital affiliations
- 2
- Practice address
- 4501 Sand Creek Road, Antioch, CA 94531
- Practice phone
- Call (925) 813-6500
- Professional email
- Get professional email
- Personal email
- Get personal email
- Mobile number
- Get mobile number
Primary practice
Find Dr. Tseng'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. Lillian Tseng is an internist in Antioch, California
Dr. Tseng practices at Antioch Medical Center in Antioch, California, part of Kaiser Permanente.
Dr. Tseng's NPI, 1619016169, was assigned on February 5, 2007. Dr. Tseng graduated from Vanderbilt University School Of Medicine in 2004. Dr. Tseng holds California license A92629.
- NPI
- 1619016169NPI Registry (opens in a new tab)
- Medicare PAC ID
- 3476693342
- NPI enumeration date
- February 5, 2007
- NPI status
- Active
- Accepts Medicare assignment
- Yes
- Practice phone
- (925) 813-6500
- Professional email
- Get email
- Personal email
- Get email
- Mobile number
- Get number
- Sex
- Female
- Estimated age
- 48
- Medical school graduation
- 2004
Sources: NPPES NPI Registry (CMS); Dmand AI Professional Profile Data; Dmand AI Affiliation Data; and Doctors and Clinicians National Downloadable File (CMS)
Dr. Lillian Tseng practices at Antioch Medical Center in Antioch, California
Dr. Tseng's primary practice is Antioch Medical Center, at 4501 Sand Creek Road, Antioch, CA 94531 in Contra Costa County. The practice phone is (925) 813-6500.
- Antioch Medical Center4501 Sand Creek Road, Antioch, CA 94531 · Contra Costa CountyPhone(925) 813-6500
Source: Dmand AI Affiliation Data
Dr. Lillian Tseng is affiliated with 3 sites of care and 1 medical group
Dr. Tseng's primary practice is Antioch Medical Center in Antioch, California, part of Kaiser Permanente. Dr. Tseng is also affiliated with Walnut Creek Medical Center. The medical group on file is The Permanente Medical Group, Inc. Dmand AI also links Dr. Tseng 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. Lillian Tseng's practice
Dmand AI tracks the electronic health record (EHR) system at each site where Dr. Tseng practices, 3 sites in all. Vendor and product names are available with a free account.
| Site | EHR vendor and product |
|---|---|
| Antioch 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. Lillian Tseng is one of 16,751 internists in California
Internal medicine is Dr. Tseng's primary specialty in the NPI Registry, under taxonomy code 207R00000X. Dr. Tseng is board certified in critical care medicine by the American Board of Internal Medicine. Dr. Tseng is licensed in California.
Specialties and state licenses
- Internal medicine, CaliforniaPrimary
Internists near Dr. Tseng
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. Lillian Tseng billed Medicare for 24 services in 2024
CMS data shows 24 Medicare services from Dr. Tseng across 1 procedure code in 2024, for 16 Medicare patients. Medicare paid $1,553 for them. Every service was in a facility, such as a hospital, rather than an office.
Dr. Tseng's Medicare services by type, 2023 to 2024
- 2023
- 2024
- Office and hospital visits
- 2023: 532024: 2455%
Dr. Tseng compared with the California median for internists, 2024
- Dr. Tseng
- California median
- Medicare services
- 24vs 36193% below
- Medicare patients
- 16vs 15189% below
- Part D claims
- 16vs 42196% below
Medians across 15,815 internists in California with Dmand AI profiles that report each measure.
Dr. Tseng'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.
Need commercial claims for Dr. Tseng?
Medicare shows one payer. Book a meeting to get commercial claims data for Dr. Tseng and other internists in California.
Sources: Medicare Physician & Other Practitioners - by Provider and Service (CMS), 2024 data; and Dmand AI Peer Benchmarks
Dr. Lillian Tseng treated 16 Medicare patients in 2024, average age 65
CMS counts 16 Medicare patients who saw Dr. Tseng in 2024. The largest group is 85 and over, with 0 patients. 75% of them have high blood pressure. Their average risk score is 3.32, 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. Tseng's median patient age at 65, with 51% women.
Dr. Tseng's Medicare patients by age, 2024
CMS leaves out age groups with fewer than 11 patients.
Chronic conditions among Dr. Tseng's Medicare patients, 2024
- High blood pressure75%
Share of Medicare patients with each condition. A patient can have several.
Dr. Tseng's patients across all payers
Dmand AI patient panel data covers Medicare, Medicaid and commercial patients.
Patient panel by age, all payers
Median age 65
Patient panel by sex, all payers
- Women51%
- Men48%
Sources: Dmand AI Patient Panel Data; and Medicare Physician & Other Practitioners - by Provider (CMS), 2024 data
Dr. Lillian Tseng wrote 16 Medicare Part D claims in 2018
In 2018, Dr. Tseng wrote 16 Medicare Part D claims. They cover 1 drug, with $8,773 in total drug cost. In 2017, CMS named 183 claims across 7 drugs.
Dr. Tseng's most prescribed drugs by claims, 2018
CMS names a drug when it has 11 or more claims. Share is of the claims for drugs CMS names.
Part D claims for drugs CMS names, 2017 to 2018
- 2017
- 2018
- Claims for drugs CMS names
- 2017: 1832018: 1691%
Drugs named by CMS: 1 in 2018, 7 in 2017.
Source: Medicare Part D Prescribers - by Provider and Drug (CMS), 2024 data, released May 6, 2026
How Dr. Lillian Tseng takes part in Medicare
Dr. Tseng 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. Lillian Tseng has 4 publications on record
Dmand AI links 4 papers to Dr. Tseng in 2024. The most frequent topics are Disease Models, Animal, Rabbits and Smoke Inhalation Injury. Dr. Tseng has published most often in J Biomed Opt. Dr. Tseng's most frequent co-authors are Matthew Brenner, MD, Johnny H. Ju, MD and Leopoldo Carlos Cancio, MD.
Topics Dr. Tseng writes about most
- Disease Models, Animal
- Rabbits
- Smoke Inhalation Injury
- Tomography, Optical Coherence
Dr. Tseng's most frequent co-authors
- Matthew Brenner, MD3 shared papers
- Johnny H. Ju, MD2 shared papers
- Leopoldo Carlos Cancio, MD1 shared paper
Recent publications by Dr. Tseng
See who Dr. Tseng researches with
Physician Network Discovery turns co-authorship, shared hospitals and shared groups into a map of who Dr. Tseng works with, so you can find a warm path to the right internists.
Sources: PubMed (National Library of Medicine); and Dmand AI Research Linkage
Dr. Lillian Tseng received $100 in industry payments in 2017
CMS Open Payments shows 1 general payment to Dr. Tseng from 1 drug or device company in 2017. Food and beverage make up the largest share, 100% of the total. Bayer HealthCare Pharmaceuticals Inc. paid the most, $100.
Companies that paid Dr. Tseng the most, 2017 to 2017
Share is of all general payments to this clinician.
Source: Open Payments (CMS), 2025 data, released July 7, 2026
Dr. Lillian Tseng graduated from Vanderbilt University School Of Medicine
Dr. Tseng graduated from Vanderbilt University School Of Medicine in 2004.
- Medical school
- Board certified in critical care medicine
- Board certified in internal medicine
- Board certified in pulmonary disease
Source: Dmand AI Professional Profile Data
Dr. Lillian Tseng accepts plans from 2 insurance carriers
Dr. Tseng is in network with 2 carriers, including Kaiser Permanente and CMS Medicare. EPO plans come from the most carriers, 1. Check the plan with the practice before a visit.
- Kaiser Permanente
- CMS Medicare
Plan types Dr. Tseng accepts, by number of carriers
- EPO1
- HMO1
- Medicare1
- POS1
Source: Dmand AI Insurance Network Data
Sources for Dr. Lillian Tseng'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) |
| 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. Lillian Tseng
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. Lillian Tseng's NPI number?
Dr. Lillian Tseng's NPI number is 1619016169. It was assigned on February 5, 2007, and it is active in the NPI Registry.
What kind of doctor is Dr. Lillian Tseng?
Dr. Lillian Tseng is an internist in Antioch, California. The primary specialty in the NPI Registry is Internal Medicine Physician (taxonomy code 207R00000X).
Where does Dr. Lillian Tseng practice?
Dr. Tseng practices at 4501 Sand Creek Road, Antioch, CA 94531. Dr. Tseng's primary practice is Antioch Medical Center in Antioch, California, part of Kaiser Permanente. Dmand AI also links Dr. Tseng to 1 group practice or clinic.
What is Dr. Lillian Tseng's office phone number?
The practice phone on file for Dr. Tseng is (925) 813-6500.
What is Dr. Lillian Tseng's medical license number?
Dr. Tseng holds California license A92629.
Which hospitals is Dr. Lillian Tseng affiliated with?
Dr. Tseng practices at Antioch Medical Center in Antioch, California. Dr. Tseng is also affiliated with Walnut Creek Medical Center.
What medical group is Dr. Lillian Tseng part of?
Dr. Tseng is linked to The Permanente Medical Group, Inc.
Does Dr. Lillian Tseng accept Medicare?
Yes. CMS data shows Dr. Tseng billed Medicare for 24 services in 2024, and Dr. Tseng accepts Medicare assignment.
How many Medicare patients does Dr. Lillian Tseng see?
CMS counts 16 Medicare patients who saw Dr. Tseng in 2024, with an average age of 65.
Is Dr. Lillian Tseng board certified?
Yes. Dr. Tseng is board certified in critical care medicine by the American Board of Internal Medicine.
Show 8 more questionsShow fewer questions
What services does Dr. Lillian Tseng bill to Medicare?
In 2024, Dr. Tseng's most billed Medicare services were hospital inpatient care (99232).
Where did Dr. Lillian Tseng go to medical school?
Dr. Tseng graduated from Vanderbilt University School Of Medicine in 2004.
What drugs does Dr. Lillian Tseng prescribe most?
In 2018 Medicare Part D data, Dr. Tseng's most prescribed drugs by claims were Spiriva Respimat.
Has Dr. Lillian Tseng received payments from drug or device companies?
CMS Open Payments shows $100 in general payments to Dr. Tseng from 1 company from 2017 to 2017. The largest total came from Bayer HealthCare Pharmaceuticals Inc.
How long has Dr. Lillian Tseng been practicing?
Dr. Tseng graduated from medical school in 2004, 22 years ago.
Does Dr. Lillian Tseng do research?
Dmand AI links 4 publications to Dr. Tseng.
Who does Dr. Lillian Tseng publish with?
Dr. Tseng's most frequent co-authors are Matthew Brenner, MD (3 shared papers), Johnny H. Ju, MD (2 shared papers) and Leopoldo Carlos Cancio, MD (1 shared paper).
What insurance does Dr. Lillian Tseng accept?
Dr. Tseng is in network with 2 carriers, including Kaiser Permanente and CMS Medicare. EPO plans come from the most carriers, 1. Check the plan with the practice before a visit.
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