Michael Thomas Ragen, M.D.
Specialist · Camarillo, CA
Michael Thomas Ragen, M.D. is a specialist with a practice address in Camarillo, California, and NPI 1326230822, issued on Aug 17, 2007. Check the license (California N3235738, as entered in NPPES) with the California board that licenses this profession; the Medicare figures below come from public CMS files.
- Name
- Michael Thomas Ragen
- Credential
- M.D.
- Primary taxonomy
- Specialist 174400000X
- License number
- N3235738 CA
Self-reported in NPPES; status is on the state search - Practice location
- 3801 Las Posas RD, Camarillo, CA 93010
- Phone
- (805) 388-1211
- Enumerated
- Aug 17, 2007
- Record last updated
- Feb 15, 2008 (not updated in 18 years: call before relying on the address or phone)
- Fax
- (805) 388-0900
- Medicaid ID
- 00G586480 CA
- Medicare enrollment
- Enrolled (PECOS I20100223000446); accepts Medicare assignment
- Telehealth
- Offers telehealth (CMS)
- Entity
- Type 1 · individual
8 nearest specialist records → All 5,749 in California → Look up another NPI →
Also registered at 3801 Las Posas RD
A shared address usually means a shared clinic or building; it does not show who employs whom.
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- Ronald Hunter, D.D.S., M.S.D.Periodontics1770585283
Verify Michael Thomas Ragen in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersWhich California board licenses this profession
Search for license N3235738Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
31% fewer Medicare Part D claims than the average specialist in 2024
958 Medicare Part D claims for 341 beneficiaries, against an average of 1,380 among the 8,233 providers of this specialty who prescribed in Part D. Brand-name drugs were 31% of claims.
Most prescribed
- Latanoprost189 claims
- Tobramycin-Dexamethasone142 claims
- Prednisolone Acetate83 claims
- Erythromycin81 claims
- Neomycin-Polymyxin-Dexameth71 claims
- Brimonidine Tartrate67 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): 75.5 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).
Bills Medicare through one group practice
- Ventura Eye Institute, IncCamarillo, CA
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
Michael Thomas Ragen among 5,749 specialist records in California
Michael Thomas Ragen, M.D. is one of 5,749 specialist records with a practice address in California. 30% 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 40% of them.
- NPI issued2007 · 40% of these records are older, 44% newer
- In a Medicare fileYes · 30% of these records are
- In the CMS Doctors and Clinicians fileYes · 19% of these records are
- Graduated1985 · median 1989 among the 1,075 with a school on file
- Record last updated2008 · 77% of these records were not updated in five years or more
Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 174400000X and a California practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
Specialist providers in California
There are 5,749 specialist records in California.
All 5,749 in California → Every provider in Camarillo → Specialist nationwide →
The 8 specialist records with the nearest ZIP codes
- Stanlee Cox, M.A.Camarillo, CA 930101588691737
- Runda Esquillo, P.T.Camarillo, CA 930101770514655
- Catharine Gomez, MFTCamarillo, CA 930101760536437
- Lewis Kanter, M.D.Camarillo, CA 930101013910827
- Moises LlamasCamarillo, CA 930101861754541
- Jeffery MoraCamarillo, CA 930101215272331
- Kelsey HooverCamarillo, CA 930121538672456
- Erin KornerCamarillo, CA 930121972017689
Common questions
What is Michael Thomas Ragen, M.D.'s NPI number?
Michael Thomas Ragen, M.D.'s National Provider Identifier (NPI) is 1326230822, issued on Aug 17, 2007. An NPI identifies a provider in billing; it is not a license.
Where is Michael Thomas Ragen, M.D. located?
The NPPES record lists a practice address at 3801 Las Posas RD, Camarillo, CA, 93010. Phone: (805) 388-1211. Providers update this record themselves, so call before visiting.
How can I verify Michael Thomas Ragen, M.D.'s license?
NPPES lists California license number N3235738, as entered by the provider. Search the California board that licenses this profession; the NPPES record confirms identity only.
How much does Michael Thomas Ragen, M.D. prescribe under Medicare Part D?
In 2024, Michael Thomas Ragen, M.D. had 958 Medicare Part D claims for 341 beneficiaries; the average among specialist prescribers was 1,380. Part D covers Medicare prescriptions only.
What is Michael Thomas Ragen, M.D.'s MIPS final score?
The 2023 MIPS final score is 75.5 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.