Joseph Wayne Cassady, D.O.
General Practice Physician · Marysville, CA
Joseph Wayne Cassady, D.O. is a general practice physician with a practice address in Marysville, California, and NPI 1679653976, issued on Oct 17, 2006. Check the license (California 20A5572, as entered in NPPES) on the Medical Board of California; the Medicare figures below come from public CMS files.
- Name
- Joseph Wayne Cassady
- Credential
- D.O.
- Primary taxonomy
- General Practice Physician 208D00000X
- License number
- 20A5572 CA
Self-reported in NPPES; status is on the state search - Practice location
- 5730 Packard Avenue, Marysville, CA 95901
- Phone
- (530) 749-8313
- Enumerated
- Oct 17, 2006
- Record last updated
- Jan 15, 2024
- Fax
- (530) 749-6281
- Medicare enrollment
- Enrolled (PECOS I20111110000124); accepts Medicare assignment
- Medical or professional school
- Ohio University, College Of Osteopathic Medicine, 1986
- Entity
- Type 1 · individual
8 nearest general practice physician records → All 1,956 in California → Look up another NPI →
Verify Joseph Wayne Cassady in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersMedical Board of California
Search for license 20A5572Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
78% fewer Medicare Part D claims than the average general practice physician in 2024
653 Medicare Part D claims for 48 beneficiaries, against an average of 3,030 among the 8,395 providers of this specialty who prescribed in Part D. Brand-name drugs were 17% of claims. 17 claims were for opioids.
Most prescribed
- Buprenorphine-Naloxone259 claims
- Clonazepam44 claims
- Suboxone36 claims
- Lisinopril25 claims
- Gabapentin23 claims
- Sublocade17 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.
Industry payments in 2024: $143.98
5 payments; by number, the most common kind was food and beverage; the largest payer was Gilead Sciences, Inc. The 4,259 providers of this specialty with any payment received $1,273.40 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
- Peach Tree HealthcareMarysville, CA
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
Joseph Wayne Cassady among 1,956 general practice physician records in California
Joseph Wayne Cassady, D.O. is one of 1,956 general practice physician records with a practice address in California. 48% of them appear in a Medicare file (Part D prescribing, MIPS, Open Payments or Medicare group billing); this one does. Its NPI, issued in 2006, is newer than 5% of them.
- NPI issued2006 · 5% of these records are older, 66% newer
- In a Medicare fileYes · 48% of these records are
- In the CMS Doctors and Clinicians fileYes · 27% of these records are
- Graduated1986 · median 1994 among the 520 with a school on file
- Record last updated2024 · 60% of these records were not updated in five years or more
Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 208D00000X and a California practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
General Practice Physician providers in California
There are 1,956 general practice physician records in California.
All 1,956 in California → Every provider in Marysville → General Practice Physician nationwide →
The 8 general practice physician records with the nearest ZIP codes
- John Bossalini, DOBeale Afb, CA 959031396247441
- Nicolas Lara, MDBeale Afb, CA 959031548721244
- Ki-Hyeok Lee, M.D.Beale Afb, CA 959031548250731
- Paul Vu, M.D.Beale Afb, CA 959031356669451
- Dewayne Caviness, MDChico, CA 959261912938887
- Randall Caviness, M.D.Chico, CA 959261235140278
- Kurt Johnson, M.D., INC.Chico, CA 959261407881741
- Ronald Johnson, M.D.Chico, CA 959261578603122
Common questions
What is Joseph Wayne Cassady, D.O.'s NPI number?
Joseph Wayne Cassady, D.O.'s National Provider Identifier (NPI) is 1679653976, issued on Oct 17, 2006. An NPI identifies a provider in billing; it is not a license.
Where is Joseph Wayne Cassady, D.O. located?
The NPPES record lists a practice address at 5730 Packard Avenue, Marysville, CA, 95901. Phone: (530) 749-8313. Providers update this record themselves, so call before visiting.
How can I verify Joseph Wayne Cassady, D.O.'s license?
NPPES lists California license number 20A5572, 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 Wayne Cassady, D.O. prescribe under Medicare Part D?
In 2024, Joseph Wayne Cassady, D.O. had 653 Medicare Part D claims for 48 beneficiaries; the average among general practice physician prescribers was 3,030. Part D covers Medicare prescriptions only.
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.