Dr. Minzi Chen, MD
- Medicare services, 2024
- 3,627
- Medicare patients, 2024
- 544
- Part D claims, 2024
- 2,942
- Publications
- 1
- MIPS score, 2024
- 100
- Practice address
- 632 W. Gibson Rd, Woodland, CA 95695
- Practice phone
- Call (530) 668-2632
- Professional email
- Get professional email
- Personal email
- Get personal email
- Mobile number
- Get mobile number
Primary practice
Primary & Specialty Care - Dignity Health Woodland Clinic
Mammography / Breast Imaging Center · Woodland, California
Find Dr. 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.
Dr. Minzi Chen is a rheumatologist in Woodland, California
Dr. Chen practices at Primary & Specialty Care - Dignity Health Woodland Clinic in Woodland, California.
Dr. Chen's NPI, 1922269067, was assigned on June 20, 2008. Dr. Chen graduated from Shanghai Medical University in 1997. Dr. Chen holds California license A118145.
- NPI
- 1922269067NPI Registry (opens in a new tab)
- Medicare PAC ID
- 0042471351
- NPI enumeration date
- June 20, 2008
- NPI status
- Active
- Accepts Medicare assignment
- Yes
- Offers telehealth
- Yes
- Practice phone
- (530) 668-2632
- Professional email
- Get email
- Personal email
- Get email
- Mobile number
- Get number
- Sex
- Female
- Estimated age
- 55
- Medical school graduation
- 1997
Sources: NPPES NPI Registry (CMS); Dmand AI Professional Profile Data; Dmand AI Affiliation Data; and Doctors and Clinicians National Downloadable File (CMS)
Dr. Minzi Chen practices at Primary & Specialty Care - Dignity Health Woodland Clinic in Woodland, California
Dr. Chen's primary practice is Primary & Specialty Care - Dignity Health Woodland Clinic, at 632 W. Gibson Rd, Woodland, CA 95695. The practice phone is (530) 668-2632.
- Primary & Specialty Care - Dignity Health Woodland Clinic632 W. Gibson Rd, Woodland, CA 95695Phone(530) 668-2632
Source: Dmand AI Affiliation Data
Dr. Minzi Chen is affiliated with 7 sites of care and 1 medical group
Dr. Chen's primary practice is Primary & Specialty Care - Dignity Health Woodland Clinic in Woodland, California. Dr. Chen is also affiliated with Dignity Health - Woodland Memorial Hospital. The medical group on file is Mercy Medical Group. Dmand AI also links Dr. Chen to 4 more hospitals and 1 group practice or clinic, each named with a free account. Dr. Chen's employer is on file too: a breast imaging center.
Sources: Dmand AI Affiliation Data; and Dmand AI Org Hierarchy Data
Dmand AI tracks the EHR system at Dr. Minzi Chen's practice
Dmand AI tracks the electronic health record (EHR) system at each site where Dr. Chen practices, 7 sites in all. Vendor and product names are available with a free account.
| Site | EHR vendor and product |
|---|---|
| Primary & Specialty Care - Dignity Health Woodland Clinic | Available with a free account |
| +6 more affiliated sites | Available with a free account |
Source: Dmand AI Technology Install Data
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Dr. Minzi Chen is one of 821 rheumatologists in California
Rheumatology is Dr. Chen's primary specialty in the NPI Registry, under taxonomy code 207RR0500X. Dr. Chen is board certified in internal medicine by the American Board of Internal Medicine. Dmand AI has Dr. Chen's licenses on file in 3 states: California, Oregon and Louisiana.
Specialties and state licenses
- Rheumatology, CaliforniaPrimary
- Oregon license
- Louisiana license
Clinical focus
Dmand AI lists arteritis, arthritis, fluid in a joint, gout, joint arthropathy, joint pain, lupus and muscle disease among the conditions Dr. Chen treats.
Rheumatologists near Dr. Chen
Counts of rheumatologists 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. Minzi Chen billed Medicare for 3,627 services in 2024
CMS data shows 3,627 Medicare services from Dr. Chen across 13 procedure codes in 2024, for 544 Medicare patients. Medicare paid $183,345 for them. Every service was in an office.
Dr. Chen's Medicare services by type, 2023 to 2024
- 2023
- 2024
- Drugs given in the office
- 2023: 1042024: 2,1361954%
- Office and hospital visits
- 2023: 1,3832024: 1,3941%
- Tests and treatments
- 2023: 02024: 45
- Surgery
- 2023: 352024: 363%
- Other services
- 2023: 02024: 16
Dr. Chen compared with the California median for rheumatologists, 2024
- Dr. Chen
- California median
- Medicare services
- 3,627vs 9004.0 times
- Medicare patients
- 544vs 2162.5 times
- Part D claims
- 2,755vs 9622.9 times
Medians across 773 rheumatologists in California with Dmand AI profiles that report each measure.
Dr. Chen'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.
Need commercial claims for Dr. Chen?
Medicare shows one payer. Book a meeting to get commercial claims data for Dr. Chen and other rheumatologists in California.
Sources: Medicare Physician & Other Practitioners - by Provider and Service (CMS), 2024 data; and Dmand AI Peer Benchmarks
Dr. Minzi Chen treated 544 Medicare patients in 2024, average age 72
CMS counts 544 Medicare patients who saw Dr. Chen in 2024. The largest group is 65 to 74, with 258 patients. 75% of them have arthritis, and 74% have high blood pressure. 32% are also on Medicaid. Their average risk score is 1.32, where 1.00 is the Medicare average.
Across all payers, Dmand AI patient panel data puts Dr. Chen's median patient age at 62, with 74% women.
Dr. Chen's Medicare patients by age, 2024
Dr. Chen's Medicare patients by sex, 2024
- Women40474%
- Men14026%
Chronic conditions among Dr. Chen's Medicare patients, 2024
- Arthritis75%
- High blood pressure74%
- High cholesterol74%
- Osteoporosis38%
- Diabetes29%
- Mood disorders25%
- Anxiety24%
- Chronic kidney disease24%
Share of Medicare patients with each condition. A patient can have several.
Dr. 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 62
Patient panel by sex, all payers
- Women74%
- Men25%
Sources: Dmand AI Patient Panel Data; and Medicare Physician & Other Practitioners - by Provider (CMS), 2024 data
Dr. Minzi Chen wrote 2,942 Medicare Part D claims in 2024
In 2024, Dr. Chen wrote 2,942 Medicare Part D claims for 434 patients. 79% of them were for generic drugs. CMS names the drug for 2,755 of them, across 28 drugs with 11 or more claims each, at $3,081,909 in total drug cost. In 2023, CMS named 2,386 claims across 27 drugs.
Dr. Chen's Part D claims by kind of drug, 2024
- Generic2,325 claims79%
- Brand-name and other617 claims21%
Dr. Chen'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. Chen's Part D claims, 2024
- Antibiotics1%30 of 2,942 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: 2,3862024: 2,75515%
Drugs named by CMS: 28 in 2024, 27 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. Minzi Chen scored 100 out of 100 in Medicare's MIPS program for 2024
CMS publishes a Merit-based Incentive Payment System (MIPS) score of 100 out of 100 for Dr. Chen for performance year 2024, reported through an alternative payment model (APM). Dr. Chen accepts Medicare assignment, so Medicare's approved amount is taken as full payment. CMS lists Dr. Chen as offering telehealth.
- Accepts Medicare assignment
- Yes
- Offers telehealth
- Yes
Dr. Chen's MIPS scores, performance year 2024
- 100of 100Final score
- 86.3of 100Quality
- 100of 100Promoting Interoperability
- 40of 100Improvement Activities
Each score is out of 100. The final score weighs the categories CMS scored for this clinician.
Sources: Doctors and Clinicians National Downloadable File (CMS); and Clinician Public Reporting: Overall MIPS Performance (CMS), 2024 data, released September 10, 2026
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Dr. Minzi Chen has 1 publication on record
Dmand AI links 1 paper to Dr. Chen. Dr. Chen's most frequent co-authors are William E. Davis, Austin Michael Fraser, MD and Robert J. Quinet, MD.
Dr. Chen's most frequent co-authors
- William E. Davis1 shared paper
- Austin Michael Fraser, MD1 shared paper
- Robert J. Quinet, MD1 shared paper
Recent publications by Dr. Chen
See who Dr. Chen researches with
Physician Network Discovery turns co-authorship, shared hospitals and shared groups into a map of who Dr. Chen works with, so you can find a warm path to the right rheumatologists.
Sources: PubMed (National Library of Medicine); and Dmand AI Research Linkage
Dr. Minzi Chen received $3,464 in industry payments from 2016 to 2025
CMS Open Payments shows 69 general payments to Dr. Chen from 14 drug and device companies from 2016 to 2025. Food and beverage make up the largest share, 91% of the total. Amgen Inc. paid the most, $1,013.
General payments to Dr. Chen by program year, 2016 to 2025
General payments to Dr. Chen by kind, 2016 to 2025
- Food and beverage$3,13991%
- Consulting fees$2407%
- Education$852%
Companies that paid Dr. Chen the most, 2016 to 2025
Share is of all general payments to this clinician.
Source: Open Payments (CMS), 2025 data, released July 7, 2026
Dr. Minzi Chen graduated from Shanghai Medical University
Dr. Chen graduated from Shanghai Medical University in 1997.
- Medical school
- Board certified in internal medicine
- Board certified in rheumatology
Source: Dmand AI Professional Profile Data
Dr. Minzi Chen accepts plans from 12 insurance carriers
Dr. Chen is in network with 12 carriers, including Aetna, Blue Cross Blue Shield of Michigan and United Healthcare. PPO plans come from the most carriers, 9. Check the plan with the practice before a visit.
- Aetna
- Blue Cross Blue Shield of Michigan
- United Healthcare
- Elevance
- HCSC
- Alliant Health Plans
- Blue Cross Blue Shield of Massachusetts
- Regence Health Plans
- +4 more carriersWith a free account
Plan types Dr. Chen accepts, by number of carriers
- PPO9
- Medicare7
- HMO6
- POS4
- EPO3
Source: Dmand AI Insurance Network Data
Sources for Dr. Minzi 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 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)Clinician Public Reporting: Overall MIPS Performance (CMS) (opens in a new tab) |
| Publications, topics and co-authors | PubMed (National Library of Medicine) (opens in a new tab)Dmand AI Research Linkage |
| Industry payments | Open Payments (CMS) (opens in a new tab) |
| Training, board certification and memberships | Dmand AI Professional Profile Data |
| Insurance carriers and plan types | Dmand AI Insurance Network 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 Dr. Minzi 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 Dr. Minzi Chen's NPI number?
Dr. Minzi Chen's NPI number is 1922269067. It was assigned on June 20, 2008, and it is active in the NPI Registry.
What kind of doctor is Dr. Minzi Chen?
Dr. Minzi Chen is a rheumatologist in Woodland, California. The primary specialty in the NPI Registry is Rheumatology Physician (taxonomy code 207RR0500X).
Where does Dr. Minzi Chen practice?
Dr. Chen practices at 632 W. Gibson Rd, Woodland, CA 95695. Dr. Chen's primary practice is Primary & Specialty Care - Dignity Health Woodland Clinic in Woodland, California. Dmand AI also links Dr. Chen to 4 hospitals and 1 group practice or clinic.
What is Dr. Minzi Chen's office phone number?
The practice phone on file for Dr. Chen is (530) 668-2632.
What is Dr. Minzi Chen's medical license number?
Dr. Chen holds California license A118145, one of the licenses on file in 3 states.
Which states has Dr. Minzi Chen been licensed in?
Dmand AI has state licenses on file for Dr. Chen in California (2000 to 2027), Oregon (2021 to 2025) and Louisiana (2011 to 2015).
Which hospitals is Dr. Minzi Chen affiliated with?
Dr. Chen is affiliated with Dignity Health - Woodland Memorial Hospital. Dmand AI links Dr. Chen to 4 more hospitals.
What medical group is Dr. Minzi Chen part of?
Dr. Chen is linked to Mercy Medical Group.
Does Dr. Minzi Chen accept Medicare?
Yes. CMS data shows Dr. Chen billed Medicare for 3,627 services in 2024, and Dr. Chen accepts Medicare assignment.
Does Dr. Minzi Chen offer telehealth?
Yes. The CMS Doctors and Clinicians file lists Dr. Chen as offering telehealth services.
Show 11 more questionsShow fewer questions
What is Dr. Minzi Chen's MIPS score?
Dr. Chen's MIPS final score for performance year 2024 is 100 out of 100, reported through an alternative payment model (APM).
How many Medicare patients does Dr. Minzi Chen see?
CMS counts 544 Medicare patients who saw Dr. Chen in 2024, with an average age of 72.
Is Dr. Minzi Chen board certified?
Yes. Dr. Chen is board certified in internal medicine by the American Board of Internal Medicine.
What services does Dr. Minzi Chen bill to Medicare?
In 2024, Dr. Chen's most billed Medicare services were injected or infused drug (J0897), office visit, established patient (99214) and office visit, established patient (99213).
Where did Dr. Minzi Chen go to medical school?
Dr. Chen graduated from Shanghai Medical University in 1997.
What drugs does Dr. Minzi Chen prescribe most?
In 2024 Medicare Part D data, Dr. Chen's most prescribed drugs by claims were Hydroxychloroquine Sulfate, Alendronate Sodium and Methotrexate.
Has Dr. Minzi Chen received payments from drug or device companies?
CMS Open Payments shows $3,464 in general payments to Dr. Chen from 14 companies from 2016 to 2025. The largest total came from Amgen Inc.
How long has Dr. Minzi Chen been practicing?
Dr. Chen graduated from medical school in 1997, 29 years ago.
Does Dr. Minzi Chen do research?
Dmand AI links 1 publication to Dr. Chen.
Who does Dr. Minzi Chen publish with?
Dr. Chen's most frequent co-authors are William E. Davis (1 shared paper), Austin Michael Fraser, MD (1 shared paper) and Robert J. Quinet, MD (1 shared paper).
What insurance does Dr. Minzi Chen accept?
Dr. Chen is in network with 12 carriers, including Aetna, Blue Cross Blue Shield of Michigan and United Healthcare. PPO plans come from the most carriers, 9. Check the plan with the practice before a visit.
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