Warren Everett Klausner, DO
Family Medicine Physician · Santa Cruz, CA
Warren Everett Klausner, DO is a family medicine physician with a practice address in Santa Cruz, California, and NPI 1093931834, issued on Apr 18, 2007. Check the license (California 20A6722, as entered in NPPES) on the Medical Board of California; the Medicare figures below come from public CMS files.
- Name
- Warren Everett Klausner
- Credential
- DO
- Primary taxonomy
- Family Medicine Physician 207Q00000X
- License number
- 20A6722 CA
Self-reported in NPPES; status is on the state search - Practice location
- 129 Jewell St, Santa Cruz, CA 95060
- Phone
- (831) 420-1400
- Enumerated
- Apr 18, 2007
- Record last updated
- Nov 1, 2009 (not updated in 17 years: call before relying on the address or phone)
- Fax
- (831) 420-1401
- Medicare enrollment
- Enrolled (PECOS I20101116000587); may accept Medicare assignment
- Medical or professional school
- College Of Osteo Med Of The Pacific At Pomona, 1995
- Entity
- Type 1 · individual
8 nearest family medicine physician records → All 17,133 in California → Look up another NPI →
Verify Warren Everett Klausner in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersMedical Board of California
Search for license 20A6722Check 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 family medicine physician in 2024
102 Medicare Part D claims for 25 beneficiaries, against an average of 3,544 among the 117,163 providers of this specialty who prescribed in Part D.
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.
Warren Everett Klausner among 17,133 family medicine physician records in California
Warren Everett Klausner, DO is one of 17,133 family medicine physician records with a practice address in California. 81% 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 41% of them.
- NPI issued2007 · 41% of these records are older, 47% newer
- In a Medicare fileYes · 81% of these records are
- In the CMS Doctors and Clinicians fileYes · 62% of these records are
- Graduated1995 · median 2005 among the 10,652 with a school on file
- Record last updated2009 · 58% of these records were not updated in five years or more
Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 207Q00000X and a California practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
114 family medicine physician records list a practice address in Santa Cruz
They are 114 of the 5,138 NPPES records with a practice address in Santa Cruz, and 17,133 family medicine physician records in California.
All 17,133 in California → Every provider in Santa Cruz → Family Medicine Physician nationwide →
The 8 family medicine physician records with the nearest ZIP codes
- Josee Belanger, MDSanta Cruz, CA 950601437261989
- Flavio Cornejo, DOSanta Cruz, CA 950601285734327
- Michael Coulson, MDSanta Cruz, CA 950601790869238
- Maria Greaves, M.D.Santa Cruz, CA 950601467484154
- Jennifer Hastings, M.D.Santa Cruz, CA 950601861505927
- Rose Marie Hendrix, DOSanta Cruz, CA 950601629078415
- Whay Jones, MDSanta Cruz, CA 950601952301020
- Miki Joy, M.D.Santa Cruz, CA 950601134122922
Common questions
What is Warren Everett Klausner, DO's NPI number?
Warren Everett Klausner, DO's National Provider Identifier (NPI) is 1093931834, issued on Apr 18, 2007. An NPI identifies a provider in billing; it is not a license.
Where is Warren Everett Klausner, DO located?
The NPPES record lists a practice address at 129 Jewell St, Santa Cruz, CA, 95060. Phone: (831) 420-1400. Providers update this record themselves, so call before visiting.
How can I verify Warren Everett Klausner, DO's license?
NPPES lists California license number 20A6722, 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 Warren Everett Klausner, DO prescribe under Medicare Part D?
In 2024, Warren Everett Klausner, DO had 102 Medicare Part D claims for 25 beneficiaries; the average among family medicine physician prescribers was 3,544. 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.