Louis Arthur Klein, M.D.
Independent Medical Examiner Physician · Walnut Creek, CA
Louis Arthur Klein, M.D. is an independent medical examiner physician with a practice address in Walnut Creek, California, and NPI 1598877698, issued on Aug 31, 2006. Check the license (California G21120, as entered in NPPES) with the California board that licenses this profession; the Medicare figures below come from public CMS files.
- Name
- Louis Arthur Klein
- Credential
- M.D.
- Primary taxonomy
- Independent Medical Examiner Physician 202C00000X
- License numbers
- G21120 CA
94598-3012 CA
Self-reported in NPPES; status is on the state search - Practice location
- 1776 Ygnacio Valley RD Ste 201, Walnut Creek, CA 94598
- Phone
- (925) 937-0995
- Enumerated
- Aug 31, 2006
- Record last updated
- Jun 5, 2024
- Fax
- (925) 937-3918
- Entity
- Type 1 · individual
Also registered at 1776 Ygnacio Valley RD Ste 201
A shared address usually means a shared clinic or building; it does not show who employs whom.
- Sandy Cortez, RD CFTRegistered Dietitian1659400612
Verify Louis Arthur Klein in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersWhich California board licenses this profession
Search for license G21120Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
73% fewer Medicare Part D claims than the average independent medical examiner physician in 2024
45 Medicare Part D claims, against an average of 166 among the 19 providers of this specialty who prescribed in Part D. Brand-name drugs were 0% of claims.
Most prescribed
- Prochlorperazine Maleate12 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.
Independent Medical Examiner Physician providers in California
There are 17 independent medical examiner physician records in California.
Other independent medical examiner physician records in California
- Juan Cambron Perez, CPT, CNASanta Barbara, CA1063240463
- Benjamin Carey, MDNovato, CA1275736811
- Ross Chapman, MDSouth Lake Tahoe, CA1598234569
- Randolph Gibbs, MDMecca, CA1487859294
- Richard Hyman, M.D.Los Angeles, CA1144343559
- Joyce Kim, MDLoma Linda, CA1699371575
- Eliza Ladyzhensky, MDLos Angeles, CA1851599534
- Maxine Liggins, M.D.Los Angeles, CA1720281439
- Asia O'Neal, IDCChula Vista, CA1811750599
- Bennet Omalu, M.D., M.B.A., M.P.H.Sacramento, CA1346467370
Common questions
What is Louis Arthur Klein, M.D.'s NPI number?
Louis Arthur Klein, M.D.'s National Provider Identifier (NPI) is 1598877698, issued on Aug 31, 2006. An NPI identifies a provider in billing; it is not a license.
Where is Louis Arthur Klein, M.D. located?
The NPPES record lists a practice address at 1776 Ygnacio Valley RD Ste 201, Walnut Creek, CA, 94598. Phone: (925) 937-0995. Providers update this record themselves, so call before visiting.
How can I verify Louis Arthur Klein, M.D.'s license?
NPPES lists California license number G21120, as entered by the provider. Search the California board that licenses this profession; the NPPES record confirms identity only.
How much does Louis Arthur Klein, M.D. prescribe under Medicare Part D?
In 2024, Louis Arthur Klein, M.D. had 45 Medicare Part D claims; the average among independent medical examiner physician prescribers was 166. 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.