Joel Siegel, M.D.
Dermatology Physician · Oxnard, CA
Joel Siegel, M.D. is a dermatology physician with a practice address in Oxnard, California, and NPI 1528056868, issued on Oct 11, 2005. Check the license (California G55171, as entered in NPPES) on the Medical Board of California; the Medicare figures below come from public CMS files.
- Name
- Joel Siegel
- Credential
- M.D.
- Primary taxonomy
- Dermatology Physician 207N00000X
- License number
- G55171 CA
Self-reported in NPPES; status is on the state search - Practice location
- 3641 W 5TH St, Oxnard, CA 93030
- Phone
- (805) 985-5505
- Enumerated
- Oct 11, 2005
- Record last updated
- Oct 2, 2012 (not updated in 14 years: call before relying on the address or phone)
- Fax
- (805) 985-6095
- Entity
- Type 1 · individual
8 nearest dermatology physician records → All 2,083 in California → Look up another NPI →
Also registered at 3641 W 5TH St
A shared address usually means a shared clinic or building; it does not show who employs whom.
- Scott Changchien, M.D.Obstetrics & Gynecology Physician1902850555
- Dorothea Clayton, M.D.Internal Medicine Physician1053596395
- Suseela Dasari, M.D.Pediatrics Physician1982658548
- Denia Garfias, M.D.Pediatrics Physician1992905871
- Mostafa Hammoudi, M.D.Neurology Physician1912027426
- Jonathan Shirman, DOAddiction Medicine (Family Medicine) Physician1326606898
Verify Joel Siegel in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersMedical Board of California
Search for license G55171Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
98% fewer Medicare Part D claims than the average dermatology physician in 2024
12 Medicare Part D claims, against an average of 797 among the 12,802 providers of this specialty who prescribed in Part D. Brand-name drugs were 0% of 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.
Joel Siegel among 2,083 dermatology physician records in California
Joel Siegel, M.D. is one of 2,083 dermatology 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 2005, is newer than 0% of them.
- NPI issued2005 · 0% of these records are older, 94% newer
- In a Medicare fileYes · 83% of these records are
- In the CMS Doctors and Clinicians fileNo · 70% of these records are
- Record last updated2012 · 58% of these records were not updated in five years or more
Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 207N00000X and a California practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
Dermatology Physician providers in California
There are 2,083 dermatology physician records in California.
All 2,083 in California → Every provider in Oxnard → Dermatology Physician nationwide →
The 8 dermatology physician records with the nearest ZIP codes
- Andrew Cattano, M.D.Oxnard, CA 930361861527855
- Victoria Chiu, M.D.Oxnard, CA 930361982806105
- Jacob Lau, M.D.Oxnard, CA 930361285769182
- Paul Rehder, M.D.Oxnard, CA 930361376563445
- Grace Sun, M.D.Oxnard, CA 930361396056735
- Patricia Walker, M.D. PH.D.Carpinteria, CA 930131619173200
- Lingyun DuCamarillo, CA 930101730541707
- Ross Kaplan, MDCamarillo, CA 930101982600011
Common questions
What is Joel Siegel, M.D.'s NPI number?
Joel Siegel, M.D.'s National Provider Identifier (NPI) is 1528056868, issued on Oct 11, 2005. An NPI identifies a provider in billing; it is not a license.
Where is Joel Siegel, M.D. located?
The NPPES record lists a practice address at 3641 W 5TH St, Oxnard, CA, 93030. Phone: (805) 985-5505. Providers update this record themselves, so call before visiting.
How can I verify Joel Siegel, M.D.'s license?
NPPES lists California license number G55171, 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 Joel Siegel, M.D. prescribe under Medicare Part D?
In 2024, Joel Siegel, M.D. had 12 Medicare Part D claims; the average among dermatology physician prescribers was 797. 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.