Marcus Justin Chen
- Part D claims, 2024
- 148
- Hospital affiliations
- 2
- Medical groups
- 3
- State license
- 1
- Year NPI issued
- 2019
- Practice address
- 1200 El Camino Real, South San Francisco, CA 94080
- Practice phone
- Call (650) 742-3200
- Professional email
- Get professional email
- Personal email
- Get personal email
- Mobile number
- Get mobile number
Find Marcus Chen's professional email, personal email and mobile number
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Marcus Justin Chen is a physician assistant in South San Francisco, California
Marcus Chen practices at Kaiser Permanente South San Francisco Medical Center in South San Francisco, California, part of Kaiser Permanente.
Marcus Chen's NPI, 1447895735, was assigned on November 11, 2019.
- NPI
- 1447895735NPI Registry (opens in a new tab)
- Medicare PAC ID
- 7911311360
- NPI enumeration date
- November 11, 2019
- NPI status
- Active
- Accepts Medicare assignment
- Yes
- Practice phone
- (650) 742-3200
- Professional email
- Get email
- Personal email
- Get email
- Mobile number
- Get number
- Sex
- Male
Sources: NPPES NPI Registry (CMS); Dmand AI Professional Profile Data; Dmand AI Affiliation Data; and Doctors and Clinicians National Downloadable File (CMS)
Marcus Justin Chen practices at Kaiser Permanente South San Francisco Medical Center in South San Francisco, California
Marcus Chen's primary practice is Kaiser Permanente South San Francisco Medical Center, at 1200 El Camino Real, South San Francisco, CA 94080 in San Mateo County. The practice phone is (650) 742-3200.
- Kaiser Permanente South San Francisco Medical Center1200 El Camino Real, South San Francisco, CA 94080 · San Mateo CountyPhone(650) 742-3200
Source: Dmand AI Affiliation Data
Marcus Justin Chen is affiliated with 2 sites of care and 3 medical groups
Marcus Chen's primary practice is Kaiser Permanente South San Francisco Medical Center in South San Francisco, California, part of Kaiser Permanente. Marcus Chen is also affiliated with San Francisco Medical Center. The medical group on file is The Permanente Medical Group, Inc. Dmand AI also links Marcus Chen to 2 more medical groups, each named with a free account.
Sources: Dmand AI Affiliation Data; and Dmand AI Org Hierarchy Data
Dmand AI tracks the EHR system at Marcus Justin Chen's practice
Dmand AI tracks the electronic health record (EHR) system at each site where Marcus Chen practices, 2 sites in all. Vendor and product names are available with a free account.
| Site | EHR vendor and product |
|---|---|
| Kaiser Permanente South San Francisco Medical Center | Available with a free account |
| +1 more site and 2 medical groups | Available with a free account |
Source: Dmand AI Technology Install Data
For health IT teams
Dmand AI maps EHR vendors, IT decision makers and buying committees across Kaiser Permanente and 6.2K+ hospitals, with verified contacts in the same login.
Marcus Justin Chen is one of 11,482 physician assistants in California
Physician assistant is Marcus Chen's primary specialty in the NPI Registry, under taxonomy code 363A00000X.
Specialties and state licenses
- Physician assistantPrimary
Physician assistants near Marcus Chen
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
Marcus Justin Chen's patients have a median age of 70
Across all payers, Dmand AI patient panel data puts Marcus Chen's median patient age at 70, with 40% women.
Marcus Chen's patients across all payers
Dmand AI patient panel data covers Medicare, Medicaid and commercial patients.
Patient panel by age, all payers
Median age 70
Patient panel by sex, all payers
- Women40%
- Men60%
Source: Dmand AI Patient Panel Data
Marcus Justin Chen wrote 148 Medicare Part D claims in 2024
In 2024, Marcus Chen wrote 148 Medicare Part D claims for 75 patients. 83% of them were for generic drugs.
Marcus Chen's Part D claims by kind of drug, 2024
- Generic123 claims83%
- Brand-name and other25 claims17%
Drug classes CMS tracks in Marcus Chen's Part D claims, 2024
- Opioids39%57 of 148 claims
- Antibiotics9%13 of 148 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
How Marcus Justin Chen takes part in Medicare
Marcus Chen 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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Filter 7.4M+ HCPs by Medicare procedures, Part D drugs and Open Payments history, then reach them with verified contacts in one login.
Sources for Marcus Justin Chen'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 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) |
| MIPS scores, telehealth, assignment and procedure percentiles | Doctors and Clinicians National Downloadable File (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 Marcus Justin Chen
Spotted something out of date? Email hello@dmand.ai and we will check the record. Contact details live in the free trial.
What is Marcus Justin Chen's NPI number?
Marcus Justin Chen's NPI number is 1447895735. It was assigned on November 11, 2019, and it is active in the NPI Registry.
What does Marcus Justin Chen specialize in?
Marcus Justin Chen is a physician assistant in South San Francisco, California. The primary specialty in the NPI Registry is Physician Assistant (taxonomy code 363A00000X).
Where does Marcus Justin Chen practice?
Marcus Chen practices at 1200 El Camino Real, South San Francisco, CA 94080. Marcus Chen's primary practice is Kaiser Permanente South San Francisco Medical Center in South San Francisco, California, part of Kaiser Permanente. Dmand AI also links Marcus Chen to 2 medical groups.
What is Marcus Justin Chen's office phone number?
The practice phone on file for Marcus Chen is (650) 742-3200.
Which hospitals is Marcus Justin Chen affiliated with?
Marcus Chen practices at Kaiser Permanente South San Francisco Medical Center in South San Francisco, California. Marcus Chen is also affiliated with San Francisco Medical Center.
What medical group is Marcus Justin Chen part of?
Marcus Chen is linked to The Permanente Medical Group, Inc. Dmand AI links Marcus Chen to 2 more medical groups.
Does Marcus Justin Chen accept Medicare?
Yes. CMS lists Marcus Chen as accepting Medicare assignment.
How long has Marcus Justin Chen been practicing?
Marcus Chen's NPI was assigned in 2019.
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