Jay Samuel Joseph, M.D.
Radiation Oncology Physician · Ukiah, CA
Jay Samuel Joseph, M.D. is a radiation oncology physician with a practice address in Ukiah, California, and NPI 1396835153, issued on Oct 13, 2006. Check the license (California G74799, as entered in NPPES) on the Medical Board of California; the Medicare figures below come from public CMS files.
- Name
- Jay Samuel Joseph
- Credential
- M.D.
- Primary taxonomy
- Radiation Oncology Physician 2085R0001X
- License number
- G74799 CA
Self-reported in NPPES; status is on the state search - Practice location
- 1165 S Dora St Bldg H, Ukiah, CA 95482
- Phone
- (707) 463-3636
- Enumerated
- Oct 13, 2006
- Record last updated
- Nov 3, 2021 (not updated in 5 years: call before relying on the address or phone)
- Fax
- (707) 463-2714
- Medicaid ID
- 00G747990 CA
- Medicare enrollment
- Enrolled (PECOS I20080606000491); accepts Medicare assignment
- Medical or professional school
- University Of California, San Diego School Of Medicine, 1991
- Telehealth
- Offers telehealth (CMS)
- Entity
- Type 1 · individual
8 nearest radiation oncology physician records → All 735 in California → Look up another NPI →
Verify Jay Samuel Joseph in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersMedical Board of California
Search for license G74799Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
33% fewer Medicare Part D claims than the average radiation oncology physician in 2024
90 Medicare Part D claims for 38 beneficiaries, against an average of 134 among the 4,851 providers of this specialty who prescribed in Part D. Brand-name drugs were 13% of claims. 27 claims were for opioids.
Most prescribed
- Triamcinolone Acetonide18 claims
- Hydrocodone-Acetaminophen12 claims
- Hydromorphone Hcl11 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: $358.90
6 payments; by number, the most common kind was food and beverage; the largest payer was Novocure Inc. The 3,275 providers of this specialty with any payment received $1,897.85 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
- Providence Medical FoundationUkiah, CA
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
Jay Samuel Joseph among 735 radiation oncology physician records in California
Jay Samuel Joseph, M.D. is one of 735 radiation oncology physician records with a practice address in California. 83% 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 16% of them.
- NPI issued2006 · 16% of these records are older, 55% newer
- In a Medicare fileYes · 83% of these records are
- In the CMS Doctors and Clinicians fileYes · 74% of these records are
- Graduated1991 · median 2005 among the 545 with a school on file
- Record last updated2021 · 55% of these records were not updated in five years or more
Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 2085R0001X and a California practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
Radiation Oncology Physician providers in California
There are 735 radiation oncology physician records in California.
All 735 in California → Every provider in Ukiah → Radiation Oncology Physician nationwide →
The 8 radiation oncology physician records with the nearest ZIP codes
- Mark Bisignani, MDUkiah, CA 954821487655882
- Michael Weil, MDUkiah, CA 954821801322268
- Douglas Kelly, MDEureka, CA 955011497716781
- Join Luh, M.D.Eureka, CA 955011093809634
- Michael Chen, M.D.Santa Rosa, CA 954091417104720
- Frederick David, M.D.Santa Rosa, CA 954031982793808
- Cindy Scharfen, M.D.Santa Rosa, CA 954031861582322
- Jorge Weibel, M.D.Trinidad, CA 955701356594923
Common questions
What is Jay Samuel Joseph, M.D.'s NPI number?
Jay Samuel Joseph, M.D.'s National Provider Identifier (NPI) is 1396835153, issued on Oct 13, 2006. An NPI identifies a provider in billing; it is not a license.
Where is Jay Samuel Joseph, M.D. located?
The NPPES record lists a practice address at 1165 S Dora St Bldg H, Ukiah, CA, 95482. Phone: (707) 463-3636. Providers update this record themselves, so call before visiting.
How can I verify Jay Samuel Joseph, M.D.'s license?
NPPES lists California license number G74799, 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 Jay Samuel Joseph, M.D. prescribe under Medicare Part D?
In 2024, Jay Samuel Joseph, M.D. had 90 Medicare Part D claims for 38 beneficiaries; the average among radiation oncology physician prescribers was 134. 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.