Kathy Chau, PA
- Medicare patients, 2024
- 95
- Industry payments
- $47
- Affiliated sites
- 1
- Medical group
- 1
- State license
- 1
- Practice address
- 21950 Copley Dr, Diamond Bar, CA 91765
- Practice phone
- Call (626) 840-1023
- Professional email
- Get professional email
- Personal email
- Get personal email
- Mobile number
- Get mobile number
Primary practice
Call the Car
Diamond Bar, California
Find Kathy Chau'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.
Kathy Chau is a physician assistant in Diamond Bar, California
Kathy Chau practices at Call the Car in Diamond Bar, California.
Kathy Chau's NPI, 1972380905, was assigned on September 13, 2023. Kathy Chau graduated from Loma Linda University School of Medicine in 2023. Kathy Chau holds California license 63524.
- NPI
- 1972380905NPI Registry (opens in a new tab)
- Medicare PAC ID
- 4284071465
- NPI enumeration date
- September 13, 2023
- NPI status
- Active
- Practice phone
- (626) 840-1023
- Professional email
- Get email
- Personal email
- Get email
- Mobile number
- Get number
- Sex
- Female
- Estimated age
- 29
- Medical school graduation
- 2023
Sources: NPPES NPI Registry (CMS); Dmand AI Professional Profile Data; and Dmand AI Practice Data
Kathy Chau practices at Call the Car in Diamond Bar, California
Kathy Chau's primary practice is Call the Car, at 21950 Copley Dr, Diamond Bar, CA 91765 in Los Angeles County. The practice phone is (626) 840-1023.
- Call the Car21950 Copley Dr, Diamond Bar, CA 91765 · Los Angeles CountyPhone(626) 840-1023
Sources: NPPES NPI Registry (CMS); and Dmand AI Practice Data
Kathy Chau is affiliated with 2 sites of care and 1 medical group
Kathy Chau's primary practice is Call the Car in Diamond Bar, California. The medical group on file is Physicians and Surgeons Wound Care. Dmand AI also links Kathy Chau to 1 more group practice or clinic, named with a free account.
Sources: NPPES NPI Registry (CMS); Dmand AI Practice Data; and Dmand AI Affiliation Data
Dmand AI tracks the EHR system at Kathy Chau's practice
Dmand AI tracks the electronic health record (EHR) system at each site where Kathy Chau practices. Vendor and product names are available with a free account.
| Site | EHR vendor and product |
|---|---|
| Call the Car | Available with a free account |
| +1 more affiliated site | Available with a free account |
Source: Dmand AI Technology Install Data
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Kathy Chau is one of 11,482 physician assistants in California
Physician assistant is Kathy Chau's primary specialty in the NPI Registry, under taxonomy code 363A00000X. Kathy Chau is licensed in California.
Specialties and state licenses
- Physician assistant, CaliforniaPrimary
Physician assistants near Kathy Chau
Counts of physician assistants 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
Kathy Chau treated 95 Medicare patients in 2024, average age 78
CMS counts 95 Medicare patients who saw Kathy Chau in 2024. The largest group is 85 and over, with 31 patients. 75% of them have high blood pressure, and 75% have high cholesterol. 75% are also on Medicaid. Their average risk score is 3.57, where 1.00 is the Medicare average, so they are sicker than most Medicare patients.
Across all payers, Dmand AI patient panel data puts Kathy Chau's median patient age at 72, with 48% women.
Kathy Chau's Medicare patients by age, 2024
CMS leaves out age groups with fewer than 11 patients.
Kathy Chau's Medicare patients by sex, 2024
- Women4851%
- Men4749%
Chronic conditions among Kathy Chau's Medicare patients, 2024
- High blood pressure75%
- High cholesterol75%
- Diabetes65%
- Heart failure63%
- Arthritis58%
- Mood disorders58%
- Depression55%
- Alzheimer's and dementia52%
Share of Medicare patients with each condition. A patient can have several.
Kathy Chau'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
- Women48%
- Men51%
Sources: Dmand AI Patient Panel Data; and Medicare Physician & Other Practitioners - by Provider (CMS), 2024 data
Kathy Chau received $47 in industry payments in 2025
CMS Open Payments shows 2 general payments to Kathy Chau from 1 drug or device company in 2025. Food and beverage make up the largest share, 100% of the total. Smith & Nephew, Inc. paid the most, $47.
Companies that paid Kathy Chau the most, 2025 to 2025
Share is of all general payments to this clinician.
Source: Open Payments (CMS), 2025 data, released July 7, 2026
Kathy Chau graduated from Loma Linda University School of Medicine
Kathy Chau graduated from Loma Linda University School of Medicine in 2023.
- Medical school
Source: Dmand AI Professional Profile Data
Sources for Kathy Chau'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 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) |
| 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 Kathy Chau
Spotted something out of date? Email hello@dmand.ai and we will check the record. Contact details live in the free trial.
What is Kathy Chau's NPI number?
Kathy Chau's NPI number is 1972380905. It was assigned on September 13, 2023, and it is active in the NPI Registry.
What does Kathy Chau specialize in?
Kathy Chau is a physician assistant in Diamond Bar, California. The primary specialty in the NPI Registry is Physician Assistant (taxonomy code 363A00000X).
Where does Kathy Chau practice?
Kathy Chau practices at 21950 Copley Dr, Diamond Bar, CA 91765. Kathy Chau's primary practice is Call the Car in Diamond Bar, California. Dmand AI also links Kathy Chau to 1 group practice or clinic.
What is Kathy Chau's office phone number?
The practice phone on file for Kathy Chau is (626) 840-1023.
What is Kathy Chau's medical license number?
Kathy Chau holds California license 63524.
What medical group is Kathy Chau part of?
Kathy Chau is linked to Physicians and Surgeons Wound Care.
How many Medicare patients does Kathy Chau see?
CMS counts 95 Medicare patients who saw Kathy Chau in 2024, with an average age of 78.
Where did Kathy Chau go to medical school?
Kathy Chau graduated from Loma Linda University School of Medicine in 2023.
Has Kathy Chau received payments from drug or device companies?
CMS Open Payments shows $47 in general payments to Kathy Chau from 1 company from 2025 to 2025. The largest total came from Smith & Nephew, Inc.
How long has Kathy Chau been practicing?
Kathy Chau graduated from medical school in 2023, 3 years ago.
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