Joseph Alan Chiapella, MD
Rheumatology Physician · Chico, CA
Joseph Alan Chiapella, MD is a rheumatology physician with a practice address in Chico, California, and NPI 1255374252, issued on Jun 14, 2006. Check the license (California G387180, as entered in NPPES) on the Medical Board of California; the Medicare figures below come from public CMS files.
- Name
- Joseph Alan Chiapella
- Credential
- MD
- Primary taxonomy
- Rheumatology Physician 207RR0500X
- License number
- G387180 CA
Self-reported in NPPES; status is on the state search - Practice location
- 1423 Magnolia Ave, Chico, CA 95926
- Phone
- (530) 896-7455
- Enumerated
- Jun 14, 2006
- Record last updated
- May 30, 2008 (not updated in 18 years: call before relying on the address or phone)
- Fax
- (530) 896-1730
- Medicare enrollment
- Enrolled (PECOS I20040206000965); accepts Medicare assignment
- Medical or professional school
- Tulane University School Of Medicine, 1979
- Entity
- Type 1 · individual
Also registered at 1423 Magnolia Ave
A shared address usually means a shared clinic or building; it does not show who employs whom.
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- Sean Maiorano, D.O.Hospitalist Physician1487693552
- Kacie RoundsObstetrics & Gynecology Physician1366814576
- Harpreet ShellerFamily Nurse Practitioner1407426695
Verify Joseph Alan Chiapella in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersMedical Board of California
Search for license G387180Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
65% fewer Medicare Part D claims than the average rheumatology physician in 2024
684 Medicare Part D claims for 38 beneficiaries, against an average of 1,978 among the 6,301 providers of this specialty who prescribed in Part D. 43 claims were for opioids.
Most prescribed
- Prednisone74 claims
- Methotrexate42 claims
- Hydroxychloroquine Sulfate33 claims
- Meloxicam33 claims
- Humira(Cf) Pen29 claims
- Alendronate Sodium26 claims
Source: CMS Medicare Part D Prescribers by Provider and Drug, 2024 (data.cms.gov). Part D covers prescriptions for Medicare patients only; drugs with fewer than 11 claims are not published.
The practice group's MIPS final score for 2023 (Medicare payment program): 91.9 of 100
The Merit-based Incentive Payment System score is reported for the practice group, not for one clinician alone. Four categories are weighted into the final score; the average among 454,083 clinicians with a measured score was 83.5.
Source: CMS Quality Payment Program, MIPS performance year 2023, group reporting; category weights for 2023 (qpp.cms.gov).
Industry payments in 2024: $24.87
1 payment: food and beverage; the largest payer was Sanofi Pasteur Inc. The 4,486 providers of this specialty with any payment received $8,538.33 on average. Payments are reported by manufacturers, not by the provider, and are not a sign of wrongdoing.
Source: CMS Open Payments, program year 2024 (openpaymentsdata.cms.gov); average among providers of this specialty with at least one payment.
Bills Medicare through one group practice
- Ampla HealthChico, CA
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
Rheumatology Physician providers in California
There are 926 rheumatology physician records in California.
Other rheumatology physician records in California
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- Mai Abdelnabi, MDSan Francisco, CA1013394980
- Brian Abe, MD, PHDStanford, CA1104262708
- Thomas Abel, MDMonte Sereno, CA1871679399
- Feruza AbraamyanRoseville, CA1124769278
- Thomas Adamson, M.D.San Diego, CA1639187057
- Sana Afroz, MDMoreno Valley, CA1356724074
- Ishita Aggarwal, MDSan Francisco, CA1518385699
- Atul Agrawal, MDAntioch, CA1528146016
- Bikramjit Ahluwalia, MDApple Valley, CA1669402467
Common questions
What is Joseph Alan Chiapella, MD's NPI number?
Joseph Alan Chiapella, MD's National Provider Identifier (NPI) is 1255374252, issued on Jun 14, 2006. An NPI identifies a provider in billing; it is not a license.
Where is Joseph Alan Chiapella, MD located?
The NPPES record lists a practice address at 1423 Magnolia Ave, Chico, CA, 95926. Phone: (530) 896-7455. Providers update this record themselves, so call before visiting.
How can I verify Joseph Alan Chiapella, MD's license?
NPPES lists California license number G387180, as entered by the provider. Search the Medical Board of California at https://www.mbc.ca.gov/License-Verification/default.aspx. The NPPES record confirms identity only; the state search shows license status, expiration and public orders.
How much does Joseph Alan Chiapella, MD prescribe under Medicare Part D?
In 2024, Joseph Alan Chiapella, MD had 684 Medicare Part D claims for 38 beneficiaries; the average among rheumatology physician prescribers was 1,978. Part D covers Medicare prescriptions only.
What is Joseph Alan Chiapella, MD's MIPS final score?
The 2023 MIPS final score is 91.9 of 100, reported for the practice group. The average among 454,083 clinicians with a measured score was 83.5.
Source: CMS National Plan and Provider Enumeration System (NPPES), file of Aug 9, 2026 (NPPES files on CMS.gov); NUCC Health Care Provider Taxonomy. Medicare files from data.cms.gov. An NPI identifies who bills; it is not a license.
Figures on PlainDoctor are read from the federal files each page names (CMS NPPES, Medicare Part D, MIPS, Open Payments; the HHS-OIG exclusion list only as counts) and from Census population estimates, with the file date shown beside them. See our editorial standards & corrections policy, the methodology behind these numbers, or report a data error. Data current as of Aug 9, 2026.