Minzi Chen, MD
NPI 1922269067 · Rheumatology Physician · Woodland, CA
Enrolled with Medicare as Practitioner - Rheumatology · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Minzi Chen, MD is a Rheumatology Physician provider in Woodland, CA (NPI 1922269067).
Provider details
- NPI number
- 1922269067
- Entity type
- Individual
- Primary specialty
- Rheumatology PhysicianAllopathic & Osteopathic Physicians
- Credential
- MD
- Sex
- Female
- Sole proprietor
- No
- License
- A118145 (CA)
Specialties & taxonomies
Allopathic & Osteopathic Physicians
Profile Score
A profile completeness & documented-activity index — NOT a quality, outcomes, or patient-satisfaction rating.
- Registry tenure25% of score
18 yrs in NPPES registry
- Profile completeness25% of score
100% of core fields populated
- Practice footprint15% of score
1 documented practice location
- Medicare service volume (vs. specialty peers)25% of score
1,477 Medicare services, 2024 (ranked within specialty)
- Open Payments transparency10% of score
Has Open Payments disclosures (2024)
Medicare volume is ranked against active providers in the same specialty. Signals a provider has no public data for (e.g. Medicare claims) are left out of the score entirely — never counted as zero — so providers without that data are not penalized. See the full formula and weights in our .
What this provider does (Medicare)
Based on Medicare fee-for-service claims, 2024; not all care is captured.
| Service (HCPCS) | Medicare services | Typical Medicare-allowed (2024) |
|---|---|---|
| Established Patient Office Or Other Outpatient Visit With Moderate Level of Decision Making, If Using Time, 30 Minutes Or More99214 | 961 | $141 |
| Established Patient Office Or Other Outpatient Visit With Low Level OD Decision Making, If Using Time, 20 Minutes Or More99213 | 269 | $100 |
| New Patient Office Or Other Outpatient Visit With a High Level of Medical Decision Making, If Using Time, 60 Minutes Or More99205 | 90 | $238 |
| New Patient Office Or Other Outpatient Visit With Moderate Level of Medical Decision Making, If Using Time, 45 Minutes Or More99204 | 54 | $180 |
| Injection of Drug Or Substance Under Skin Or Into Muscle96372 | 31 | $16 |
| Aspiration And/Or Injection of Fluid From Large Joint |
What this provider prescribes (Medicare Part D)
Top drugs by Medicare Part D claim volume, 2024 · 28 distinct drugs on file.
| Drug | Part D claims (2024) | Beneficiaries |
|---|---|---|
| Hydroxychloroquine Sulfate | 494 | 139 |
| Alendronate Sodium | 493 | 163 |
| Methotrexate Sodiumbrand: Methotrexate | 480 | 129 |
| Etanerceptbrand: Enbrel Sureclick | 198 | 26 |
| Prednisone | 190 | 63 |
| Allopurinol | 166 | 32 |
| Leflunomide | 100 |
Transparency — industry payments
Based on CMS Open Payments, 2024; not all care is captured.
$918 across 10 records (Open Payments 2024)
Open Payments discloses payments and transfers of value (meals, travel, consulting, research, royalties) from drug and device makers to providers. This is a transparency signal, not a verdict — such payments are legal and common, and their presence is neither an endorsement nor a criticism. Source: CMS Open Payments, program year 2024.
Practice location
Mailing address
Registry dates
- Enumerated
- 2008-06-20
- Last updated
- 2020-07-23
- Certified
- 2020-07-23
Frequently asked questions
- What is Minzi Chen's NPI number?
- Minzi Chen's National Provider Identifier (NPI) is 1922269067, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Minzi Chen's specialty?
- Minzi Chen is listed in the NPPES registry with a primary specialty of Rheumatology Physician (Allopathic & Osteopathic Physicians).
- Where is Minzi Chen located?
- Minzi Chen's practice location on file with NPPES is 632 W Gibson Rd, Woodland, CA 95695-5169.
- What is Minzi Chen's phone number?
- The practice phone number listed in the NPPES registry for Minzi Chen is (560) 668-2600.
- Does Minzi Chen accept Medicare?
- Minzi Chen is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Minzi Chen's NPI active?
- Yes — Minzi Chen's NPI (1922269067) is active in the NPPES registry as of the last update on 2020-07-23.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.