Shannon Joy Reider, D.O.
Hospitalist Physician · Torrance, CA
Shannon Joy Reider, D.O. is a hospitalist physician with a practice address in Torrance, California, and NPI 1619150935, issued on Dec 10, 2007. Check the license (California 20A9810, as entered in NPPES) on the Medical Board of California; the Medicare figures below come from public CMS files.
- Name
- Shannon Joy Reider
- Credential
- D.O.
- Primary taxonomy
- Hospitalist Physician 208M00000X
- License number
- 20A9810 CA
Self-reported in NPPES; status is on the state search - Practice location
- 3330 Lomita Blvd, Torrance, CA 90505
- Phone
- (310) 214-0811
- Enumerated
- Dec 10, 2007
- Record last updated
- Jan 7, 2026
- Medicare enrollment
- Enrolled (PECOS I20080424000780); accepts Medicare assignment
- Entity
- Type 1 · individual
8 nearest hospitalist physician records → All 3,099 in California → Look up another NPI →
Also registered at 3330 Lomita Blvd
A shared address usually means a shared clinic or building; it does not show who employs whom.
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Verify Shannon Joy Reider in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersMedical Board of California
Search for license 20A9810Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
18% more Medicare Part D claims than the average hospitalist physician in 2024
616 Medicare Part D claims for 86 beneficiaries, against an average of 521 among the 21,613 providers of this specialty who prescribed in Part D.
Most prescribed
- Eliquis42 claims
- Atorvastatin Calcium36 claims
- Losartan Potassium23 claims
- Tamsulosin Hcl23 claims
- Amlodipine Besylate21 claims
- Baclofen19 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.
Bills Medicare through one group practice
- Healthcare Partners Affiliates Medical GroupTorrance, CA
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
Shannon Joy Reider among 3,099 hospitalist physician records in California
Shannon Joy Reider, D.O. is one of 3,099 hospitalist physician records with a practice address in California. 90% of them appear in a Medicare file (Part D prescribing, MIPS, Open Payments or Medicare group billing); this one does. Its NPI, issued in 2007, is newer than 27% of them.
- NPI issued2007 · 27% of these records are older, 66% newer
- In a Medicare fileYes · 90% of these records are
- In the CMS Doctors and Clinicians fileYes · 81% of these records are
- Graduated2005 · median 2010 among the 2,505 with a school on file
- Record last updated2026 · 49% of these records were not updated in five years or more
Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 208M00000X and a California practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
Hospitalist Physician providers in California
There are 3,099 hospitalist physician records in California.
All 3,099 in California → Every provider in Torrance → Hospitalist Physician nationwide →
The 8 hospitalist physician records with the nearest ZIP codes
- Tracy Bercu, MDTorrance, CA 905051992927230
- Tasneem Bholat, M.D.Torrance, CA 905051114151271
- Ryan Brevig, M.D.Torrance, CA 905051255399143
- Allen Chang, D.O.Torrance, CA 905051801239975
- Kelly Enright, D.O.Torrance, CA 905051194135053
- Michael Kammerman, M.D.Torrance, CA 905051922061308
- Dinesh Kumar, M.DTorrance, CA 905051043286842
- Kevin Mak, M.D.Torrance, CA 905051841559002
Common questions
What is Shannon Joy Reider, D.O.'s NPI number?
Shannon Joy Reider, D.O.'s National Provider Identifier (NPI) is 1619150935, issued on Dec 10, 2007. An NPI identifies a provider in billing; it is not a license.
Where is Shannon Joy Reider, D.O. located?
The NPPES record lists a practice address at 3330 Lomita Blvd, Torrance, CA, 90505. Phone: (310) 214-0811. Providers update this record themselves, so call before visiting.
How can I verify Shannon Joy Reider, D.O.'s license?
NPPES lists California license number 20A9810, 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 Shannon Joy Reider, D.O. prescribe under Medicare Part D?
In 2024, Shannon Joy Reider, D.O. had 616 Medicare Part D claims for 86 beneficiaries; the average among hospitalist physician prescribers was 521. 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.