Joann Chan, PA
- Part D claims, 2024
- 275
- Affiliated sites
- 1
- Medical groups
- 2
- State license
- 1
- Year NPI issued
- 2011
- Practice address
- 8403 N Fallbrook Ave, West Hills, CA 91304
- Practice phone
- Call (740) 289-3508
- Professional email
- Get professional email
- Personal email
- Get personal email
- Mobile number
- Get mobile number
Primary practice
Quest Diagnostics
West Hills, California
Find Joann Chan'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.
Joann Chan is a physician assistant in West Hills, California
Joann Chan practices at Quest Diagnostics in West Hills, California.
Joann Chan's NPI, 1912298217, was assigned on April 21, 2011.
- NPI
- 1912298217NPI Registry (opens in a new tab)
- NPI enumeration date
- April 21, 2011
- NPI status
- Active
- Practice phone
- (740) 289-3508
- Professional email
- Get email
- Personal email
- Get email
- Mobile number
- Get number
- Sex
- Female
- Estimated age
- 42
- Medical school graduation
- 2010
Sources: NPPES NPI Registry (CMS); Dmand AI Professional Profile Data; and Dmand AI Practice Data
Joann Chan practices at Quest Diagnostics in West Hills, California
Joann Chan's primary practice is Quest Diagnostics, at 8403 N Fallbrook Ave, West Hills, CA 91304 in Los Angeles County. The practice phone is (740) 289-3508.
- Quest Diagnostics8403 N Fallbrook Ave, West Hills, CA 91304 · Los Angeles CountyPhone(740) 289-3508
Sources: NPPES NPI Registry (CMS); and Dmand AI Practice Data
Joann Chan is affiliated with 2 sites of care and 2 medical groups
Joann Chan's primary practice is Quest Diagnostics in West Hills, California. The medical group on file is Wong Shi-Yin MD. Dmand AI also links Joann Chan to 1 more group practice or clinic and 1 medical group, each 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 Joann Chan's practice
Dmand AI tracks the electronic health record (EHR) system at each site where Joann Chan practices. Vendor and product names are available with a free account.
| Site | EHR vendor and product |
|---|---|
| Quest Diagnostics | Available with a free account |
| +1 more site and 1 medical group | Available with a free account |
Source: Dmand AI Technology Install Data
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Joann Chan is one of 11,482 physician assistants in California
Physician assistant is Joann Chan's primary specialty in the NPI Registry, under taxonomy code 363A00000X.
Specialties and state licenses
- Physician assistantPrimary
Physician assistants near Joann Chan
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
Joann Chan's patients have a median age of 51
Across all payers, Dmand AI patient panel data puts Joann Chan's median patient age at 51, with 63% women.
Joann Chan's patients across all payers
Dmand AI patient panel data covers Medicare, Medicaid and commercial patients.
Patient panel by age, all payers
Median age 51
Patient panel by sex, all payers
- Women63%
- Men37%
Source: Dmand AI Patient Panel Data
Joann Chan wrote 275 Medicare Part D claims in 2024
In 2024, Joann Chan wrote 275 Medicare Part D claims for 25 patients. 87% of them were for generic drugs.
Joann Chan's Part D claims by kind of drug, 2024
- Generic238 claims87%
- Brand-name and other37 claims13%
Drug classes CMS tracks in Joann Chan's Part D claims, 2024
- Antibiotics5%13 of 275 claims
Share of all Part D claims for each drug class CMS reports on. Classes with no claims are left out.
Source: Medicare Part D Prescribers - by Provider (CMS), 2024 data
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Sources for Joann Chan'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 Data |
| Part D prescribing | Medicare Part D Prescribers - by Provider (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 Joann Chan
Spotted something out of date? Email hello@dmand.ai and we will check the record. Contact details live in the free trial.
What is Joann Chan's NPI number?
Joann Chan's NPI number is 1912298217. It was assigned on April 21, 2011, and it is active in the NPI Registry.
What does Joann Chan specialize in?
Joann Chan is a physician assistant in West Hills, California. The primary specialty in the NPI Registry is Physician Assistant (taxonomy code 363A00000X).
Where does Joann Chan practice?
Joann Chan practices at 8403 N Fallbrook Ave, West Hills, CA 91304. Joann Chan's primary practice is Quest Diagnostics in West Hills, California. Dmand AI also links Joann Chan to 1 group practice or clinic and 1 medical group.
What is Joann Chan's office phone number?
The practice phone on file for Joann Chan is (740) 289-3508.
What medical group is Joann Chan part of?
Joann Chan is linked to Wong Shi-Yin MD. Dmand AI links Joann Chan to 1 more medical group.
How long has Joann Chan been practicing?
Joann Chan graduated from medical school in 2010, 16 years ago.
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