Dr. Zonglang L. Tsai, MD
- Medicare services, 2024
- 7,580
- Medicare patients, 2024
- 102
- Part D claims, 2024
- 7,231
- Hospital affiliations
- 2
- Industry payments
- $36,527
- Practice address
- 2280 Lomita Blvd, Lomita, CA 90717
- Practice phone
- Call (310) 602-0123
- Professional email
- Get professional email
- Personal email
- Get personal email
- Mobile number
- Get mobile number
Primary practice
Family Adult Day Healthcare
Lomita, California
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. Zonglang L. Tsai is an internist in Lomita, California
Dr. Tsai practices at Family Adult Day Healthcare in Lomita, California.
Dr. Tsai's NPI, 1871675744, was assigned on October 20, 2006. Dr. Tsai holds California license A35282.
- NPI
- 1871675744NPI Registry (opens in a new tab)
- Medicare PAC ID
- 5698961191
- NPI enumeration date
- October 20, 2006
- NPI status
- Active
- Accepts Medicare assignment
- Yes
- Offers telehealth
- Yes
- Practice phone
- (310) 602-0123
- Professional email
- Get email
- Personal email
- Get email
- Mobile number
- Get number
- Sex
- Male
- Estimated age
- 79
- Medical school graduation
- 1973
Sources: NPPES NPI Registry (CMS); Dmand AI Professional Profile Data; Dmand AI Practice Data; and Doctors and Clinicians National Downloadable File (CMS)
Dr. Zonglang L. Tsai practices at Family Adult Day Healthcare in Lomita, California
Dr. Tsai's primary practice is Family Adult Day Healthcare, at 2280 Lomita Blvd, Lomita, CA 90717 in Los Angeles County. The practice phone is (310) 602-0123.
- Family Adult Day Healthcare2280 Lomita Blvd, Lomita, CA 90717 · Los Angeles CountyPhone(310) 602-0123
Sources: NPPES NPI Registry (CMS); and Dmand AI Practice Data
Dr. Zonglang L. Tsai is affiliated with 4 sites of care
Dr. Tsai's primary practice is Family Adult Day Healthcare in Lomita, California. Dr. Tsai is also affiliated with Torrance Memorial Medical Center. Dmand AI also links Dr. Tsai to 1 more hospital and 1 home health agency, each named with a free account.
Sources: NPPES NPI Registry (CMS); Dmand AI Practice Data; Dmand AI Affiliation Data; and Dmand AI Org Hierarchy Data
Dmand AI tracks the EHR system at Dr. Zonglang L. Tsai's practice
Dmand AI tracks the electronic health record (EHR) system at each site where Dr. Tsai practices, 3 sites in all. Vendor and product names are available with a free account.
| Site | EHR vendor and product |
|---|---|
| Family Adult Day Healthcare | Available with a free account |
| +3 more affiliated sites | Available with a free account |
Source: Dmand AI Technology Install Data
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Dr. Zonglang L. 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 California.
Specialties and state licenses
- Internal medicine, CaliforniaPrimary
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. Zonglang L. Tsai billed Medicare for 7,580 services in 2024
CMS data shows 7,580 Medicare services from Dr. Tsai across 19 procedure codes in 2024, for 102 Medicare patients. Medicare paid $190,609 for them. Every service was in an office.
Dr. Tsai's Medicare services by type, 2023 to 2024
- 2023
- 2024
- Lab and pathology
- 2023: 3,1152024: 3,2264%
- Tests and treatments
- 2023: 1,6292024: 1,7105%
- Drugs given in the office
- 2023: 1,5012024: 1,07229%
- Office and hospital visits
- 2023: 1,2302024: 1,06513%
- Surgery
- 2023: 4782024: 36524%
- Other services
- 2023: 1082024: 14231%
Dr. Tsai compared with the California median for internists, 2024
- Dr. Tsai
- California median
- Medicare services
- 7,580vs 36121.0 times
- Medicare patients
- 102vs 15132% below
- Part D claims
- 6,815vs 42116.2 times
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. Zonglang L. Tsai treated 102 Medicare patients in 2024, average age 76
CMS counts 102 Medicare patients who saw Dr. Tsai in 2024. The largest group is 65 to 74, with 37 patients. 75% of them have chronic kidney disease, and 75% have diabetes. 77% are also on Medicaid. Their average risk score is 1.83, 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 72, with 50% women.
Dr. Tsai's Medicare patients by age, 2024
Dr. Tsai's Medicare patients by sex, 2024
- Women5554%
- Men4746%
Chronic conditions among Dr. Tsai's Medicare patients, 2024
- Chronic kidney disease75%
- Diabetes75%
- High blood pressure75%
- High cholesterol75%
- Osteoporosis65%
- COPD53%
- Heart failure37%
- Arthritis36%
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 72
Patient panel by sex, all payers
- Women50%
- Men50%
Sources: Dmand AI Patient Panel Data; and Medicare Physician & Other Practitioners - by Provider (CMS), 2024 data
Dr. Zonglang L. Tsai wrote 7,231 Medicare Part D claims in 2024
In 2024, Dr. Tsai wrote 7,231 Medicare Part D claims for 113 patients. 54% of them were for generic drugs. CMS names the drug for 6,815 of them, across 109 drugs with 11 or more claims each, at $3,490,195 in total drug cost. In 2023, CMS named 6,569 claims across 111 drugs.
Dr. Tsai's Part D claims by kind of drug, 2024
- Generic3,889 claims54%
- Brand-name3,228 claims45%
- Other114 claims2%
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
- Opioids2%118 of 7,231 claims
- Antibiotics4%282 of 7,231 claims
- Antipsychotics, patients 65 and over2%129 of 7,231 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: 6,5692024: 6,8154%
Drugs named by CMS: 109 in 2024, 111 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. Zonglang L. Tsai offers telehealth to Medicare patients
Dr. Tsai accepts Medicare assignment, so Medicare's approved amount is taken as full payment. CMS lists Dr. Tsai as offering telehealth.
- Accepts Medicare assignment
- Yes
- Offers telehealth
- Yes
Melanoma (skin cancer) excision: 1 to 10 procedures (CMS shows small counts as a range)
Sources: Doctors and Clinicians National Downloadable File (CMS); and Doctors and Clinicians Utilization Data (CMS)
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Dr. Zonglang L. Tsai received $36,527 in industry payments from 2016 to 2025
CMS Open Payments shows 1,758 general payments to Dr. Tsai from 50 drug and device companies from 2016 to 2025. Food and beverage make up the largest share, 99% of the total. Amgen Inc. paid the most, $4,641.
General payments to Dr. Tsai by program year, 2016 to 2025
General payments to Dr. Tsai by kind, 2016 to 2025
- Food and beverage$36,00099%
- Education$3771%
- Speaker and faculty fees$1500%
Companies that paid Dr. Tsai the most, 2016 to 2025
Share is of all general payments to this clinician.
Source: Open Payments (CMS), 2025 data, released July 7, 2026
Sources for Dr. Zonglang L. 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 | NPPES NPI Registry (CMS) (opens in a new tab)Dmand AI Practice Data |
| Primary practice, affiliations and health system | NPPES NPI Registry (CMS) (opens in a new tab)Dmand AI Practice DataDmand 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)Doctors and Clinicians Utilization Data (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. Zonglang L. 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. Zonglang L. Tsai's NPI number?
Dr. Zonglang L. Tsai's NPI number is 1871675744. It was assigned on October 20, 2006, and it is active in the NPI Registry.
What kind of doctor is Dr. Zonglang L. Tsai?
Dr. Zonglang L. Tsai is an internist in Lomita, California. The primary specialty in the NPI Registry is Internal Medicine Physician (taxonomy code 207R00000X).
Where does Dr. Zonglang L. Tsai practice?
Dr. Tsai practices at 2280 Lomita Blvd, Lomita, CA 90717. Dr. Tsai's primary practice is Family Adult Day Healthcare in Lomita, California. Dmand AI also links Dr. Tsai to 1 hospital and 1 home health agency.
What is Dr. Zonglang L. Tsai's office phone number?
The practice phone on file for Dr. Tsai is (310) 602-0123.
What is Dr. Zonglang L. Tsai's medical license number?
Dr. Tsai holds California license A35282.
Which hospitals is Dr. Zonglang L. Tsai affiliated with?
Dr. Tsai is affiliated with Torrance Memorial Medical Center. Dmand AI links Dr. Tsai to 1 more hospital.
Does Dr. Zonglang L. Tsai accept Medicare?
Yes. CMS data shows Dr. Tsai billed Medicare for 7,580 services in 2024, and Dr. Tsai accepts Medicare assignment.
Does Dr. Zonglang L. Tsai offer telehealth?
Yes. The CMS Doctors and Clinicians file lists Dr. Tsai as offering telehealth services.
How many Medicare patients does Dr. Zonglang L. Tsai see?
CMS counts 102 Medicare patients who saw Dr. Tsai in 2024, with an average age of 76.
What services does Dr. Zonglang L. Tsai bill to Medicare?
In 2024, Dr. Tsai's most billed Medicare services were infusion or chemotherapy administration (96372), injected or infused drug (J0897) and office visit, established patient (99214).
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What drugs does Dr. Zonglang L. Tsai prescribe most?
In 2024 Medicare Part D data, Dr. Tsai's most prescribed drugs by claims were Kerendia, Ezetimibe and Jardiance.
Has Dr. Zonglang L. Tsai received payments from drug or device companies?
CMS Open Payments shows $36,527 in general payments to Dr. Tsai from 50 companies from 2016 to 2025. The largest total came from Amgen Inc.
How long has Dr. Zonglang L. Tsai been practicing?
Dr. Tsai graduated from medical school in 1973, 53 years ago.
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