Joseph Chiapella, MD
NPI 1255374252 · Rheumatology Physician · Chico, CA
Enrolled with Medicare as Practitioner - Rheumatology · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Joseph Chiapella, MD is a Rheumatology Physician provider in Chico, CA (NPI 1255374252).
Provider details
- NPI number
- 1255374252
- Entity type
- Individual
- Primary specialty
- Rheumatology PhysicianAllopathic & Osteopathic Physicians
- Credential
- MD
- Sex
- Male
- Sole proprietor
- Yes
- License
- G387180 (CA)
Specialties & taxonomies
Allopathic & Osteopathic Physicians
Allopathic & Osteopathic Physicians
Profile Score
A profile completeness & documented-activity index — NOT a quality, outcomes, or patient-satisfaction rating.
- Registry tenure33% of score
20 yrs in NPPES registry
- Profile completeness33% of score
100% of core fields populated
- Practice footprint20% of score
1 documented practice location
- Open Payments transparency13% of score
Has Open Payments disclosures (2024)
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 methodology.
What this provider prescribes (Medicare Part D)
Top drugs by Medicare Part D claim volume, 2024 · 22 distinct drugs on file.
| Drug | Part D claims (2024) | Beneficiaries |
|---|---|---|
| Prednisone | 74 | 13 |
| Methotrexate Sodiumbrand: Methotrexate | 42 | — |
| Hydroxychloroquine Sulfate | 33 | — |
| Meloxicam | 33 | — |
| Adalimumabbrand: Humira(cf) Pen | 29 | — |
| Alendronate Sodium | 26 | — |
| Etanerceptbrand: Enbrel |
Transparency — industry payments
Based on CMS Open Payments, 2024; not all care is captured.
$25 across 1 record (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
- 2006-06-14
- Last updated
- 2008-05-30
Frequently asked questions
- What is Joseph Chiapella's NPI number?
- Joseph Chiapella's National Provider Identifier (NPI) is 1255374252, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Joseph Chiapella's specialty?
- Joseph Chiapella is listed in the NPPES registry with a primary specialty of Rheumatology Physician (Allopathic & Osteopathic Physicians).
- Where is Joseph Chiapella located?
- Joseph Chiapella's practice location on file with NPPES is 1423 Magnolia Ave, Chico, CA 95926-3226.
- What is Joseph Chiapella's phone number?
- The practice phone number listed in the NPPES registry for Joseph Chiapella is (530) 896-7455.
- Does Joseph Chiapella accept Medicare?
- Joseph Chiapella is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Joseph Chiapella's NPI active?
- Yes — Joseph Chiapella's NPI (1255374252) is active in the NPPES registry as of the last update on 2008-05-30.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.