Dr. Elizabeth F. Tsai, DO
- Medicare services, 2024
- 635
- Medicare patients, 2024
- 244
- Part D claims, 2024
- 308
- MIPS score, 2024
- 87
- Hospital affiliations
- 1
- Practice address
- 24451 Health Center Drive, Laguna Hills, CA 92653
- Practice phone
- Call (949) 837-4500
- Professional email
- Get professional email
- Personal email
- Get personal email
- Mobile number
- Get mobile number
Primary practice
Find Dr. Tsai'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. Elizabeth F. Tsai is an internist in Laguna Hills, California
Dr. Tsai practices at MemorialCare Saddleback Medical Center in Laguna Hills, California, part of MemorialCare Health System.
Dr. Tsai's NPI, 1629284971, was assigned on May 15, 2007. Dr. Tsai holds Michigan license 5101016023.
- NPI
- 1629284971NPI Registry (opens in a new tab)
- Medicare PAC ID
- 9638257991
- NPI enumeration date
- May 15, 2007
- NPI status
- Active
- Accepts Medicare assignment
- Yes
- Practice phone
- (949) 837-4500
- 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. Elizabeth F. Tsai practices at MemorialCare Saddleback Medical Center in Laguna Hills, California
Dr. Tsai's primary practice is MemorialCare Saddleback Medical Center, at 24451 Health Center Drive, Laguna Hills, CA 92653 in Orange County. The practice phone is (949) 837-4500.
- MemorialCare Saddleback Medical Center24451 Health Center Drive, Laguna Hills, CA 92653 · Orange CountyPhone(949) 837-4500
Source: Dmand AI Affiliation Data
Dr. Elizabeth F. Tsai is affiliated with 2 sites of care and 1 medical group
Dr. Tsai's primary practice is MemorialCare Saddleback Medical Center in Laguna Hills, California, part of MemorialCare Health System. The medical group on file is MemorialCare Medical Group. Dmand AI also links Dr. Tsai 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. Elizabeth F. Tsai's practice
Dmand AI tracks the electronic health record (EHR) system at each site where Dr. Tsai practices, 2 sites in all. Vendor and product names are available with a free account.
| Site | EHR vendor and product |
|---|---|
| MemorialCare Saddleback Medical Center | Available with a free account |
| +1 more affiliated site | Available with a free account |
Source: Dmand AI Technology Install Data
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Dr. Elizabeth F. Tsai is one of 16,751 internists in California
Internal medicine is Dr. Tsai's primary specialty in the NPI Registry, under taxonomy code 207R00000X. Dr. Tsai is licensed in Michigan.
Specialties and state licenses
- Internal medicine, MichiganPrimary
Internists near Dr. Tsai
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. Elizabeth F. Tsai billed Medicare for 635 services in 2024
CMS data shows 635 Medicare services from Dr. Tsai across 4 procedure codes in 2024, for 244 Medicare patients. Medicare paid $54,849 for them. Every service was in a facility, such as a hospital, rather than an office.
Dr. Tsai's Medicare services by type, 2023 to 2024
- 2023
- 2024
- Office and hospital visits
- 2023: 6262024: 6351%
Dr. Tsai compared with the California median for internists, 2024
- Dr. Tsai
- California median
- Medicare services
- 635vs 36176% above
- Medicare patients
- 244vs 15162% above
- Part D claims
- 86vs 42180% below
Medians across 15,815 internists in California with Dmand AI profiles that report each measure.
Dr. Tsai'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. Tsai and other internists in California.
Sources: Medicare Physician & Other Practitioners - by Provider and Service (CMS), 2024 data; and Dmand AI Peer Benchmarks
Dr. Elizabeth F. Tsai treated 244 Medicare patients in 2024, average age 80
CMS counts 244 Medicare patients who saw Dr. Tsai in 2024. The largest group is 85 and over, with 95 patients. 75% of them have high blood pressure, and 75% have high cholesterol. 25% are also on Medicaid. Their average risk score is 2.69, 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. Tsai's median patient age at 77, with 56% women.
Dr. Tsai's Medicare patients by age, 2024
Dr. Tsai's Medicare patients by sex, 2024
- Women11547%
- Men12953%
Chronic conditions among Dr. Tsai's Medicare patients, 2024
- High blood pressure75%
- High cholesterol75%
- Arthritis53%
- Ischemic heart disease47%
- Atrial fibrillation45%
- Chronic kidney disease45%
- Heart failure43%
- Mood disorders42%
Share of Medicare patients with each condition. A patient can have several.
Dr. Tsai's patients across all payers
Dmand AI patient panel data covers Medicare, Medicaid and commercial patients.
Patient panel by age, all payers
Median age 77
Patient panel by sex, all payers
- Women56%
- Men42%
Sources: Dmand AI Patient Panel Data; and Medicare Physician & Other Practitioners - by Provider (CMS), 2024 data
Dr. Elizabeth F. Tsai wrote 308 Medicare Part D claims in 2024
In 2024, Dr. Tsai wrote 308 Medicare Part D claims for 139 patients. 86% of them were for generic drugs. CMS names the drug for 86 of them, across 7 drugs with 11 or more claims each, at $555 in total drug cost. In 2023, CMS named 44 claims across 3 drugs.
Dr. Tsai's Part D claims by kind of drug, 2024
- Generic264 claims86%
- Brand-name and other44 claims14%
Dr. Tsai'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. Tsai's Part D claims, 2024
- Opioids5%15 of 308 claims
- Antibiotics19%58 of 308 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: 442024: 8695%
Drugs named by CMS: 7 in 2024, 3 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. Elizabeth F. Tsai scored 87 out of 100 in Medicare's MIPS program for 2024
CMS publishes a Merit-based Incentive Payment System (MIPS) score of 87 out of 100 for Dr. Tsai for performance year 2024, reported as part of a group. Dr. Tsai accepts Medicare assignment, so Medicare's approved amount is taken as full payment.
- Accepts Medicare assignment
- Yes
Dr. Tsai's MIPS scores, performance year 2024
- 87of 100Final score
- 81.2of 100Quality
- 100of 100Promoting Interoperability
- 40of 100Improvement Activities
- 72of 100Cost
Each score is out of 100. The final score weighs the categories CMS scored for this clinician.
Sources: Doctors and Clinicians National Downloadable File (CMS); and Clinician Public Reporting: Overall MIPS Performance (CMS), 2024 data, released September 10, 2026
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Dr. Elizabeth F. Tsai received $1,887 in industry payments from 2016 to 2023
CMS Open Payments shows 23 general payments to Dr. Tsai from 9 drug and device companies from 2016 to 2023. Food and beverage make up the largest share, 100% of the total. Janssen Pharmaceuticals, Inc paid the most, $554.
General payments to Dr. Tsai by program year, 2016 to 2023
Companies that paid Dr. Tsai the most, 2016 to 2023
Share is of all general payments to this clinician.
Source: Open Payments (CMS), 2025 data, released July 7, 2026
Sources for Dr. Elizabeth F. Tsai'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)Clinician Public Reporting: Overall MIPS Performance (CMS) (opens in a new tab) |
| Industry payments | Open Payments (CMS) (opens in a new tab) |
| 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. Elizabeth F. Tsai
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. Elizabeth F. Tsai's NPI number?
Dr. Elizabeth F. Tsai's NPI number is 1629284971. It was assigned on May 15, 2007, and it is active in the NPI Registry.
What kind of doctor is Dr. Elizabeth F. Tsai?
Dr. Elizabeth F. Tsai is an internist in Laguna Hills, California. The primary specialty in the NPI Registry is Internal Medicine Physician (taxonomy code 207R00000X).
Where does Dr. Elizabeth F. Tsai practice?
Dr. Tsai practices at 24451 Health Center Drive, Laguna Hills, CA 92653. Dr. Tsai's primary practice is MemorialCare Saddleback Medical Center in Laguna Hills, California, part of MemorialCare Health System. Dmand AI also links Dr. Tsai to 1 group practice or clinic.
What is Dr. Elizabeth F. Tsai's office phone number?
The practice phone on file for Dr. Tsai is (949) 837-4500.
What is Dr. Elizabeth F. Tsai's medical license number?
Dr. Tsai holds Michigan license 5101016023.
Which hospitals is Dr. Elizabeth F. Tsai affiliated with?
Dr. Tsai practices at MemorialCare Saddleback Medical Center in Laguna Hills, California.
What medical group is Dr. Elizabeth F. Tsai part of?
Dr. Tsai is linked to MemorialCare Medical Group.
Does Dr. Elizabeth F. Tsai accept Medicare?
Yes. CMS data shows Dr. Tsai billed Medicare for 635 services in 2024, and Dr. Tsai accepts Medicare assignment.
What is Dr. Elizabeth F. Tsai's MIPS score?
Dr. Tsai's MIPS final score for performance year 2024 is 87 out of 100, reported as part of a group.
How many Medicare patients does Dr. Elizabeth F. Tsai see?
CMS counts 244 Medicare patients who saw Dr. Tsai in 2024, with an average age of 80.
Show 4 more questionsShow fewer questions
What services does Dr. Elizabeth F. Tsai bill to Medicare?
In 2024, Dr. Tsai's most billed Medicare services were hospital inpatient care (99232), hospital inpatient care (99239) and hospital inpatient care (99223).
What drugs does Dr. Elizabeth F. Tsai prescribe most?
In 2024 Medicare Part D data, Dr. Tsai's most prescribed drugs by claims were Furosemide, Pantoprazole Sodium and Atorvastatin Calcium.
Has Dr. Elizabeth F. Tsai received payments from drug or device companies?
CMS Open Payments shows $1,887 in general payments to Dr. Tsai from 9 companies from 2016 to 2023. The largest total came from Janssen Pharmaceuticals, Inc.
How long has Dr. Elizabeth F. Tsai been practicing?
Dr. Tsai graduated from medical school in 2004, 22 years ago.
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