Barry D. Klein, MD
Diagnostic Radiology Physician · Thousand Oaks, CA
Barry D. Klein, MD is a diagnostic radiology physician with a practice address in Thousand Oaks, California, and NPI 1073585212, issued on Feb 2, 2006. Check the license (California C41210, as entered in NPPES) on the Medical Board of California; the Medicare figures below come from public CMS files.
- Name
- Barry D. Klein
- Credential
- MD
- Primary taxonomy
- Diagnostic Radiology Physician 2085R0202X
- License number
- C41210 CA
Self-reported in NPPES; status is on the state search - Practice location
- 215 West Janss RD, Thousand Oaks, CA 91360
- Phone
- (805) 497-2727
- Enumerated
- Feb 2, 2006
- Record last updated
- Oct 23, 2025
- Fax
- (805) 495-0023
- Medicaid ID
- 00C412100 CA
- Medicare enrollment
- Enrolled (PECOS I20251027003286); accepts Medicare assignment
- Medical or professional school
- Geisel School Of Medicine At Dartmouth, 1982
- Entity
- Type 1 · individual
8 nearest diagnostic radiology physician records → All 4,500 in California → Look up another NPI →
Verify Barry D. Klein in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersMedical Board of California
Search for license C41210Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
37% fewer Medicare Part D claims than the average diagnostic radiology physician in 2024
32 Medicare Part D claims, against an average of 51 among the 2,711 providers of this specialty who prescribed in Part D. Brand-name drugs were 0% of claims.
Most prescribed
- Atorvastatin Calcium11 claims
- Losartan Potassium11 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): 74.5 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).
Industry payments in 2024: $252.45
2 payments; by number, the most common kind was food and beverage; the largest payer was Penumbra, Inc. The 8,048 providers of this specialty with any payment received $2,488.38 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 10 group practices
- Beverly Radiology Medical Group IIIMarina Del Rey, CA
- Health Diagnostics OF California A Professional CorporationBroomfield, CO
- Memorialcare Medical FoundationLong Beach, CA
- Regional Imaging AssociatesBroomfield, CO
- Regional Imaging Enm LLCMoorpark, CA
- Regional Imaging PCMoorpark, CA
- Smi Imaging LLCBeverly Hills, CA
- St Clair Professional Services IncPittsburgh, PA
- Thousand Oaks Diagnostic Imaging CenterBroomfield, CO
- West Valley Radiology Medical Group IncBroomfield, CO
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
Barry D. Klein among 4,500 diagnostic radiology physician records in California
Barry D. Klein, MD is one of 4,500 diagnostic radiology physician records with a practice address in California. 74% 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 7% of them.
- NPI issued2006 · 7% of these records are older, 52% newer
- In a Medicare fileYes · 74% of these records are
- In the CMS Doctors and Clinicians fileYes · 70% of these records are
- Graduated1982 · median 2004 among the 3,130 with a school on file
- Record last updated2025 · 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 2085R0202X and a California practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
Diagnostic Radiology Physician providers in California
There are 4,500 diagnostic radiology physician records in California.
All 4,500 in California → Every provider in Thousand Oaks → Diagnostic Radiology Physician nationwide →
The 8 diagnostic radiology physician records with the nearest ZIP codes
- David Aufrichtig, MDThousand Oaks, CA 913601295705028
- Roy Bryan, M.D.Thousand Oaks, CA 913601396021648
- Michael Hlinka, M.D.Thousand Oaks, CA 913601538145362
- Jason Lee, M.D.Thousand Oaks, CA 913601104830371
- Catherine Moses, MDThousand Oaks, CA 913601033189865
- Ruth Polan, MDThousand Oaks, CA 913601629048350
- Puja Shahrouki, MDThousand Oaks, CA 913601790276079
- Donald Decker, M.D.Thousand Oaks, CA 913611134345622
Common questions
What is Barry D. Klein, MD's NPI number?
Barry D. Klein, MD's National Provider Identifier (NPI) is 1073585212, issued on Feb 2, 2006. An NPI identifies a provider in billing; it is not a license.
Where is Barry D. Klein, MD located?
The NPPES record lists a practice address at 215 West Janss RD, Thousand Oaks, CA, 91360. Phone: (805) 497-2727. Providers update this record themselves, so call before visiting.
How can I verify Barry D. Klein, MD's license?
NPPES lists California license number C41210, 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 Barry D. Klein, MD prescribe under Medicare Part D?
In 2024, Barry D. Klein, MD had 32 Medicare Part D claims; the average among diagnostic radiology physician prescribers was 51. Part D covers Medicare prescriptions only.
What is Barry D. Klein, MD's MIPS final score?
The 2023 MIPS final score is 74.5 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.