Katherine Michelle Tsap, D.D.S.
General Practice Dentistry · Westlake Village, CA
Katherine Michelle Tsap, D.D.S. is a general practice dentistry with a practice address in Westlake Village, California, and NPI 1710293022, issued on Aug 24, 2010. Check the license (California 59513, as entered in NPPES) with the California board that licenses this profession; the Medicare figures below come from public CMS files.
- Name
- Katherine Michelle Tsap
- Credential
- D.D.S.
- Primary taxonomy
- General Practice Dentistry 1223G0001X
- License number
- 59513 CA
Self-reported in NPPES; status is on the state search - Practice location
- 1240 S Westlake Blvd, Westlake Village, CA 91361
- Phone
- (805) 230-2293
- Enumerated
- Aug 24, 2010
- Record last updated
- Mar 3, 2015 (not updated in 11 years: call before relying on the address or phone)
- Fax
- (805) 230-2296
- Entity
- Type 1 · individual
8 nearest general practice dentistry records → All 17,852 in California → Look up another NPI →
Also registered at 1240 S Westlake Blvd
A shared address usually means a shared clinic or building; it does not show who employs whom.
- Michael Bastien, MDSpecialist1053371096
- Randolph Capri, MDSpecialist1750340345
- Gary Carlson, MDSpecialist1144280181
- Judith Feldman, MDDermatology Physician1245295575
- Sherry Fieman, M.D.Neurology Physician1588751879
- Aurelia Gharzuzi Ciuica, FNP-BCFamily Nurse Practitioner1770935389
Verify Katherine Michelle Tsap in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersWhich California board licenses this profession
Search for license 59513Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
55% fewer Medicare Part D claims than the average general practice dentistry in 2024
37 Medicare Part D claims for 28 beneficiaries, against an average of 83 among the 70,290 providers of this specialty who prescribed in Part D.
Most prescribed
- Amoxicillin29 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.
Industry payments in 2024: $145.17
5 payments; by number, the most common kind was food and beverage; the largest payer was Align Technology, Inc. The 41,669 providers of this specialty with any payment received $597.01 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.
Katherine Michelle Tsap among 17,852 general practice dentistry records in California
Katherine Michelle Tsap, D.D.S. is one of 17,852 general practice dentistry records with a practice address in California. 57% of them appear in a Medicare file (Part D prescribing, MIPS, Open Payments or Medicare group billing); this one does. Its NPI, issued in 2010, is newer than 68% of them.
- NPI issued2010 · 68% of these records are older, 30% newer
- In a Medicare fileYes · 57% of these records are
- In the CMS Doctors and Clinicians fileNo · under 1% of these records are
- Record last updated2015 · 79% of these records were not updated in five years or more
Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 1223G0001X and a California practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
25 general practice dentistry records list a practice address in Westlake Village
They are 25 of the 1,397 NPPES records with a practice address in Westlake Village, and 17,852 general practice dentistry records in California.
All 17,852 in California → Every provider in Westlake Village → General Practice Dentistry nationwide →
The 8 general practice dentistry records with the nearest ZIP codes
- Richard Borquez, DDSWestlake Vlg, CA 913611548391808
- Albert Chow, D.D.SThousand Oaks, CA 913611467553610
- Robert Freeman, DDSWestlake Village, CA 913611376620146
- Sona Georgian, D.D.S.Westlake Village, CA 913611992865711
- Mojgan Hashemi, D.D.S.Thousand Oaks, CA 913611558385922
- Shahram Hosseini, DDSWestlake Village, CA 913611871691394
- Ean Kleiger, D.D.S.Thousand Oaks, CA 913611215042684
- Clyde Knoblauch, DDSThousand Oaks, CA 913611497820930
Common questions
What is Katherine Michelle Tsap, D.D.S.'s NPI number?
Katherine Michelle Tsap, D.D.S.'s National Provider Identifier (NPI) is 1710293022, issued on Aug 24, 2010. An NPI identifies a provider in billing; it is not a license.
Where is Katherine Michelle Tsap, D.D.S. located?
The NPPES record lists a practice address at 1240 S Westlake Blvd, Westlake Village, CA, 91361. Phone: (805) 230-2293. Providers update this record themselves, so call before visiting.
How can I verify Katherine Michelle Tsap, D.D.S.'s license?
NPPES lists California license number 59513, as entered by the provider. Search the California board that licenses this profession; the NPPES record confirms identity only.
How much does Katherine Michelle Tsap, D.D.S. prescribe under Medicare Part D?
In 2024, Katherine Michelle Tsap, D.D.S. had 37 Medicare Part D claims for 28 beneficiaries; the average among general practice dentistry prescribers was 83. 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.