Ellen Khamistos Weissman, PSY.D.
Psychologist · Westlake Village, CA
Ellen Khamistos Weissman, PSY.D. is a psychologist with a practice address in Westlake Village, California, and NPI 1811013881, issued on Mar 22, 2007. Check the license (California 24880, as entered in NPPES) with the California board that licenses this profession; the Medicare figures below come from public CMS files.
- Name
- Ellen Khamistos Weissman
- Credential
- PSY.D.
- Primary taxonomy
- Psychologist 103T00000X
- License number
- 24880 CA
Self-reported in NPPES; status is on the state search - Practice location
- 5706 Corsa Ave Ste 200I, Westlake Village, CA 91362
- Phone
- (818) 336-1041
- Enumerated
- Mar 22, 2007
- Record last updated
- Apr 5, 2021 (not updated in 5 years: call before relying on the address or phone)
- Medicare enrollment
- Enrolled (PECOS I20200228002348); accepts Medicare assignment
- Telehealth
- Offers telehealth (CMS)
- Entity
- Type 1 · individual
8 nearest psychologist records → All 7,304 in California → Look up another NPI →
Verify Ellen Khamistos Weissman in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersWhich California board licenses this profession
Search for license 24880Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
Bills Medicare through one group practice
- Dr. Weissman Psychology, IncWestlake Village, CA
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
Ellen Khamistos Weissman among 7,304 psychologist records in California
Ellen Khamistos Weissman, PSY.D. is one of 7,304 psychologist records with a practice address in California. 6% 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 18% of them.
- NPI issued2007 · 18% of these records are older, 64% newer
- In a Medicare fileYes · 6% of these records are
- In the CMS Doctors and Clinicians fileYes · 14% of these records are
- Graduated2008 · median 2005 among the 1,058 with a school on file
- Record last updated2021 · 59% of these records were not updated in five years or more
Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 103T00000X and a California practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
39 psychologist records list a practice address in Westlake Village
They are 39 of the 1,397 NPPES records with a practice address in Westlake Village, and 7,304 psychologist records in California.
All 7,304 in California → Every provider in Westlake Village → Psychologist nationwide →
The 8 psychologist records with the nearest ZIP codes
- Deborah Barber, PH.D.Westlake Village, CA 913621760538003
- Thomas Dakoske, PSYCHOLOGISTWestlake Village, CA 913621922188101
- Lynn Foerster, PHDWestlake Village, CA 913621457554578
- Nancy Gardner, PH.D.Westlake Village, CA 913621639395742
- Miriam Hamideh, PH.D.Westlake Village, CA 913621124183561
- Genine Hanin, ED.D.Westlake Village, CA 913621013049105
- Michele Harway, PSYCHOLOGIST, ABPPWestlake Village, CA 913621265552335
- Carolyn Kavner, PHDWestlake Village, CA 913621174754733
Common questions
What is Ellen Khamistos Weissman, PSY.D.'s NPI number?
Ellen Khamistos Weissman, PSY.D.'s National Provider Identifier (NPI) is 1811013881, issued on Mar 22, 2007. An NPI identifies a provider in billing; it is not a license.
Where is Ellen Khamistos Weissman, PSY.D. located?
The NPPES record lists a practice address at 5706 Corsa Ave Ste 200I, Westlake Village, CA, 91362. Phone: (818) 336-1041. Providers update this record themselves, so call before visiting.
How can I verify Ellen Khamistos Weissman, PSY.D.'s license?
NPPES lists California license number 24880, as entered by the provider. Search the California board that licenses this profession; the NPPES record confirms identity 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.