Han-Cheng Chen
- Medicare services, 2021
- 477
- Part D claims, 2022
- 172
- Hospital affiliations
- 1
- Industry payments
- $609
- Medical groups
- 2
- Practice address
- 150 Muir Rd, Martinez, CA 94553
- Practice phone
- Call (702) 341-3020
- Professional email
- Get professional email
- Personal email
- Get personal email
- Mobile number
- Get mobile number
Primary practice
Martinez VA Medical Center
VA Clinic / Health Facility · Martinez, California
Find Han-Cheng Chen'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.
Han-Cheng Chen is an internist in Martinez, California
Han-Cheng Chen practices at Martinez VA Medical Center in Martinez, California.
Han-Cheng Chen's NPI, 1912387796, was assigned on June 5, 2015. Han-Cheng Chen graduated from Kansas City University of Med & Biosciences, College of Osteo Med in 2015. Han-Cheng Chen holds California license A18494.
- NPI
- 1912387796NPI Registry (opens in a new tab)
- Medicare PAC ID
- 1153633516
- NPI enumeration date
- June 5, 2015
- NPI status
- Active
- Accepts Medicare assignment
- Yes
- Practice phone
- (702) 341-3020
- Professional email
- Get email
- Personal email
- Get email
- Mobile number
- Get number
- Sex
- Female
- Estimated age
- 37
- Medical school graduation
- 2015
Sources: NPPES NPI Registry (CMS); Dmand AI Professional Profile Data; Dmand AI Affiliation Data; and Doctors and Clinicians National Downloadable File (CMS)
Han-Cheng Chen practices at Martinez VA Medical Center in Martinez, California
Han-Cheng Chen's primary practice is Martinez VA Medical Center, at 150 Muir Rd, Martinez, CA 94553. The practice phone is (702) 341-3020.
- Martinez VA Medical Center150 Muir Rd, Martinez, CA 94553Phone(702) 341-3020
Source: Dmand AI Affiliation Data
Han-Cheng Chen is affiliated with 3 sites of care and 2 medical groups
Han-Cheng Chen's primary practice is Martinez VA Medical Center in Martinez, California. Han-Cheng Chen is also affiliated with Zuckerberg San Francisco General Hospital and Trauma Center. The medical group on file is UCSF Department of Radiology & Biomedical Imaging. Dmand AI also links Han-Cheng Chen to 1 more dialysis center and 1 medical group, each named with a free account. Han-Cheng Chen's employer is on file too: a government & correctional health.
Sources: Dmand AI Affiliation Data; and Dmand AI Org Hierarchy Data
Dmand AI tracks the EHR system at Han-Cheng Chen's practice
Dmand AI tracks the electronic health record (EHR) system at each site where Han-Cheng Chen practices, 3 sites in all. Vendor and product names are available with a free account.
| Site | EHR vendor and product |
|---|---|
| Martinez VA Medical Center | Available with a free account |
| +2 more sites and 1 medical group | Available with a free account |
Source: Dmand AI Technology Install Data
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Han-Cheng Chen is one of 16,751 internists in California
Internal medicine is Han-Cheng Chen's primary specialty in the NPI Registry, under taxonomy code 207R00000X. Dmand AI has Han-Cheng Chen's licenses on file in 2 states: California and Missouri.
Specialties and state licenses
- Internal medicine, CaliforniaPrimary
- Missouri license
Internists near Han-Cheng Chen
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
Han-Cheng Chen billed Medicare for 477 services in 2021
CMS data shows 477 Medicare services from Han-Cheng Chen across 6 procedure codes in 2021. Medicare paid $47,751 for them.
Han-Cheng Chen's Medicare services by type, 2021
- Office and hospital visits348
- Tests and treatments129
Where Han-Cheng Chen's Medicare services took place, 2021
- In an office10823%
- In a facility36977%
Han-Cheng Chen compared with the California median for internists, 2021
- Han-Cheng Chen
- California median
- Medicare services
- 477vs 36132% above
- Part D claims
- 172vs 42159% below
Medians across 15,815 internists in California with Dmand AI profiles that report each measure.
Han-Cheng Chen's most billed Medicare procedure codes, 2021
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 Han-Cheng Chen and other internists in California.
Sources: Medicare Physician & Other Practitioners - by Provider and Service (CMS), 2024 data; and Dmand AI Peer Benchmarks
Han-Cheng Chen's patients have a median age of 68
Across all payers, Dmand AI patient panel data puts Han-Cheng Chen's median patient age at 68, with 40% women.
Han-Cheng 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 68
Patient panel by sex, all payers
- Women40%
- Men58%
Source: Dmand AI Patient Panel Data
Han-Cheng Chen wrote 172 Medicare Part D claims in 2022
In 2022, Han-Cheng Chen wrote 172 Medicare Part D claims. They cover 5 drugs, with $13,748 in total drug cost. In 2021, CMS named 280 claims across 10 drugs.
Han-Cheng Chen's most prescribed drugs by claims, 2022
CMS names a drug when it has 11 or more claims. Share is of the claims for drugs CMS names.
Part D claims for drugs CMS names, 2021 to 2022
- 2021
- 2022
- Claims for drugs CMS names
- 2021: 2802022: 17239%
Drugs named by CMS: 5 in 2022, 10 in 2021.
Source: Medicare Part D Prescribers - by Provider and Drug (CMS), 2024 data, released May 6, 2026
How Han-Cheng Chen takes part in Medicare
Han-Cheng 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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Han-Cheng Chen received $609 in industry payments in 2021
CMS Open Payments shows 28 general payments to Han-Cheng Chen from 9 drug and device companies in 2021. Food and beverage make up the largest share, 84% of the total. AstraZeneca Pharmaceuticals LP paid the most, $246.
General payments to Han-Cheng Chen by kind, 2021 to 2021
- Food and beverage$51084%
- Education$9916%
Companies that paid Han-Cheng Chen the most, 2021 to 2021
Share is of all general payments to this clinician.
Source: Open Payments (CMS), 2025 data, released July 7, 2026
Han-Cheng Chen graduated from Kansas City University of Med & Biosciences, College of Osteo Med
Han-Cheng Chen graduated from Kansas City University of Med & Biosciences, College of Osteo Med in 2015.
- Medical school
Source: Dmand AI Professional Profile Data
Sources for Han-Cheng 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 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 Data |
| Part D prescribing | Medicare Part D Prescribers - by Provider and Drug (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) |
| 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 Han-Cheng 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 Han-Cheng Chen's NPI number?
Han-Cheng Chen's NPI number is 1912387796. It was assigned on June 5, 2015, and it is active in the NPI Registry.
What does Han-Cheng Chen specialize in?
Han-Cheng Chen is an internist in Martinez, California. The primary specialty in the NPI Registry is Internal Medicine Physician (taxonomy code 207R00000X).
Where does Han-Cheng Chen practice?
Han-Cheng Chen practices at 150 Muir Rd, Martinez, CA 94553. Han-Cheng Chen's primary practice is Martinez VA Medical Center in Martinez, California. Dmand AI also links Han-Cheng Chen to 1 dialysis center and 1 medical group.
What is Han-Cheng Chen's office phone number?
The practice phone on file for Han-Cheng Chen is (702) 341-3020.
What is Han-Cheng Chen's medical license number?
Han-Cheng Chen holds California license A18494, one of the licenses on file in 2 states.
Which states has Han-Cheng Chen been licensed in?
Dmand AI has state licenses on file for Han-Cheng Chen in California and Missouri.
Which hospitals is Han-Cheng Chen affiliated with?
Han-Cheng Chen is affiliated with Zuckerberg San Francisco General Hospital and Trauma Center.
What medical group is Han-Cheng Chen part of?
Han-Cheng Chen is linked to UCSF Department of Radiology & Biomedical Imaging. Dmand AI links Han-Cheng Chen to 1 more medical group.
Does Han-Cheng Chen accept Medicare?
Yes. CMS data shows Han-Cheng Chen billed Medicare for 477 services in 2021, and Han-Cheng Chen accepts Medicare assignment.
What services does Han-Cheng Chen bill to Medicare?
In 2021, Han-Cheng Chen's most billed Medicare services were hospital inpatient care (99232), dialysis (90935) and hospital inpatient care (99223).
Show 4 more questionsShow fewer questions
Where did Han-Cheng Chen go to medical school?
Han-Cheng Chen graduated from Kansas City University of Med & Biosciences, College of Osteo Med in 2015.
What drugs does Han-Cheng Chen prescribe most?
In 2022 Medicare Part D data, Han-Cheng Chen's most prescribed drugs by claims were Prosol, Clinisol and Amlodipine Besylate.
Has Han-Cheng Chen received payments from drug or device companies?
CMS Open Payments shows $609 in general payments to Han-Cheng Chen from 9 companies from 2021 to 2021. The largest total came from AstraZeneca Pharmaceuticals LP.
How long has Han-Cheng Chen been practicing?
Han-Cheng Chen graduated from medical school in 2015, 11 years ago.
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