Kenneth Robert Diddie, M.D.
Specialist · Westlake Village, CA
Kenneth Robert Diddie, M.D. is a specialist with a practice address in Westlake Village, California, and NPI 1184684219, issued on Mar 24, 2006. Check the license (California G033939, as entered in NPPES) with the California board that licenses this profession; the Medicare figures below come from public CMS files.
- Name
- Kenneth Robert Diddie
- Credential
- M.D.
- Primary taxonomy
- Specialist 174400000X
- License number
- G033939 CA
Self-reported in NPPES; status is on the state search - Practice location
- 1220 LA Venta Dr, Westlake Village, CA 91361
- Phone
- (805) 379-0200
- Enumerated
- Mar 24, 2006
- Record last updated
- Mar 1, 2021 (not updated in 5 years: call before relying on the address or phone)
- Fax
- (805) 496-5204
- Medicaid ID
- 00G339391 CA
- Medicare enrollment
- Enrolled (PECOS I20111212000435); accepts Medicare assignment
- Medical or professional school
- University Of Chicago, Pritzker School Of Medicine, 1973
- Entity
- Type 1 · individual
8 nearest specialist records → All 5,749 in California → Look up another NPI →
Also registered at 1220 LA Venta Dr
A shared address usually means a shared clinic or building; it does not show who employs whom.
- Denise Carlton, MSN, WHNP-BCObstetrics & Gynecology Nurse Practitioner1184050569
- Linda Gerrits, MDInternal Medicine Physician1598875072
- George Hoffman, MDOphthalmology Physician1689869356
- Janice Hyllengren, D.P.T.Physical Therapist1184639593
- Bridget Molinar, M.P.T.Physical Therapist1548280282
- Caroline Pieszak, M.D.Family Medicine Physician1558415257
Verify Kenneth Robert Diddie in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersWhich California board licenses this profession
Search for license G033939Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
97% fewer Medicare Part D claims than the average specialist in 2024
39 Medicare Part D claims, against an average of 1,380 among the 8,233 providers of this specialty who prescribed in Part D.
Most prescribed
- Diclofenac Sodium15 claims
- Amlodipine Besylate12 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 MIPS final score for 2023 (Medicare payment program): 100 of 100
The Merit-based Incentive Payment System score is reported for this clinician. 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; category weights for 2023 (qpp.cms.gov).
Kenneth Robert Diddie among 5,749 specialist records in California
Kenneth Robert Diddie, 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 2006, is newer than 7% of them.
- NPI issued2006 · 7% of these records are older, 60% newer
- In a Medicare fileYes · 30% of these records are
- In the CMS Doctors and Clinicians fileYes · 19% of these records are
- Graduated1973 · median 1989 among the 1,075 with a school on file
- Record last updated2021 · 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).
17 specialist records list a practice address in Westlake Village
They are 17 of the 1,397 NPPES records with a practice address in Westlake Village, and 5,749 specialist records in California.
All 5,749 in California → Every provider in Westlake Village → Specialist nationwide →
The 8 specialist records with the nearest ZIP codes
- Neeta Ambe-Crain, M.D.Westlake Village, CA 913611093832255
- Michael Bastien, MDWestlake Village, CA 913611053371096
- Randolph Capri, MDWestlake Village, CA 913611750340345
- Gary Carlson, MDWestlake Village, CA 913611144280181
- Glenn Cohen, M.D.Westlake Village, CA 913611881755056
- John Darin, M.D.Westlake Village, CA 913611902801764
- Rosemary Flores, M.D.Thousand Oaks, CA 913611871593095
- Robert Ghaussy, M.D.Thousand Oaks, CA 913611053311274
Common questions
What is Kenneth Robert Diddie, M.D.'s NPI number?
Kenneth Robert Diddie, M.D.'s National Provider Identifier (NPI) is 1184684219, issued on Mar 24, 2006. An NPI identifies a provider in billing; it is not a license.
Where is Kenneth Robert Diddie, M.D. located?
The NPPES record lists a practice address at 1220 LA Venta Dr, Westlake Village, CA, 91361. Phone: (805) 379-0200. Providers update this record themselves, so call before visiting.
How can I verify Kenneth Robert Diddie, M.D.'s license?
NPPES lists California license number G033939, as entered by the provider. Search the California board that licenses this profession; the NPPES record confirms identity only.
How much does Kenneth Robert Diddie, M.D. prescribe under Medicare Part D?
In 2024, Kenneth Robert Diddie, M.D. had 39 Medicare Part D claims; the average among specialist prescribers was 1,380. Part D covers Medicare prescriptions only.
What is Kenneth Robert Diddie, M.D.'s MIPS final score?
The 2023 MIPS final score is 100 of 100. 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.