David Louis Westra, M.D.
Neurological Surgery Physician · Ventura, CA
David Louis Westra, M.D. is a neurological surgery physician with a practice address in Ventura, California, and NPI 1265645790, issued on May 8, 2007. Check the license (California A93870, as entered in NPPES) on the Medical Board of California; the Medicare figures below come from public CMS files.
- Name
- David Louis Westra
- Credential
- M.D.
- Primary taxonomy
- Neurological Surgery Physician 207T00000X
- License number
- A93870 CA
Self-reported in NPPES; status is on the state search - Practice location
- 168 N Brent St Ste 408, Ventura, CA 93003
- Phone
- (805) 643-2179
- Enumerated
- May 8, 2007
- Record last updated
- Mar 30, 2026
- Fax
- (805) 643-0672
- Medicare enrollment
- Enrolled (PECOS I20101005000083); accepts Medicare assignment
- Medical or professional school
- University Of Texas Medical School At Houston, 2004
- Entity
- Type 1 · individual
8 nearest neurological surgery physician records → All 929 in California → Look up another NPI →
Also registered at 168 N Brent St Ste 408
A shared address usually means a shared clinic or building; it does not show who employs whom.
- Katherine Wagner, MDNeurological Surgery Physician1093125478
Verify David Louis Westra in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersMedical Board of California
Search for license A93870Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
65% more Medicare Part D claims than the average neurological surgery physician in 2024
284 Medicare Part D claims for 124 beneficiaries, against an average of 172 among the 4,378 providers of this specialty who prescribed in Part D. 198 claims were for opioids.
Most prescribed
- Hydrocodone-Acetaminophen125 claims
- Oxycodone-Acetaminophen43 claims
- Methylprednisolone27 claims
- Tramadol Hcl26 claims
- Gabapentin18 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.
No measured MIPS final score for 2023
CMS assigned the neutral MIPS final score of 75 without scoring Quality, Cost, Promoting Interoperability or Improvement Activities. It is an administrative threshold, so PlainDoctor does not compare it with measured clinicians.
Source: CMS Quality Payment Program, MIPS performance year 2023, group reporting; category weights for 2023 (qpp.cms.gov).
Industry payments in 2024: $891.56
40 payments; by number, the most common kind was food and beverage; the largest payer was Globus Medical, Inc. The 5,377 providers of this specialty with any payment received $14,925.58 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.
Bills Medicare through one group practice
- David L. Westra, MD, A Professional CorporationVentura, CA
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
David Louis Westra among 929 neurological surgery physician records in California
David Louis Westra, M.D. is one of 929 neurological surgery physician records with a practice address in California. 77% 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 38% of them.
- NPI issued2007 · 38% of these records are older, 48% newer
- In a Medicare fileYes · 77% of these records are
- In the CMS Doctors and Clinicians fileYes · 66% of these records are
- Graduated2004 · median 2005 among the 612 with a school on file
- Record last updated2026 · 55% of these records were not updated in five years or more
Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 207T00000X and a California practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
Neurological Surgery Physician providers in California
There are 929 neurological surgery physician records in California.
All 929 in California → Every provider in Ventura → Neurological Surgery Physician nationwide →
The 8 neurological surgery physician records with the nearest ZIP codes
- Moustapha Abou-Samra, MDVentura, CA 930031194719807
- James Herman, MDVentura, CA 930031952396491
- Nathan Oh, D.O.Ventura, CA 930031992115778
- Richard Pratt, M.D.Ventura, CA 930031245264878
- Aria Sabit, M.D.Ventura, CA 930031659510972
- Alan Siu, MDVentura, CA 930031306073457
- Nicholas Tarlov, MDVentura, CA 930031639378078
- Katherine Wagner, MDVentura, CA 930031093125478
Common questions
What is David Louis Westra, M.D.'s NPI number?
David Louis Westra, M.D.'s National Provider Identifier (NPI) is 1265645790, issued on May 8, 2007. An NPI identifies a provider in billing; it is not a license.
Where is David Louis Westra, M.D. located?
The NPPES record lists a practice address at 168 N Brent St Ste 408, Ventura, CA, 93003. Phone: (805) 643-2179. Providers update this record themselves, so call before visiting.
How can I verify David Louis Westra, M.D.'s license?
NPPES lists California license number A93870, 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 David Louis Westra, M.D. prescribe under Medicare Part D?
In 2024, David Louis Westra, M.D. had 284 Medicare Part D claims for 124 beneficiaries; the average among neurological surgery physician prescribers was 172. Part D covers Medicare prescriptions only.
What is David Louis Westra, M.D.'s MIPS final score?
CMS assigned the neutral MIPS final score of 75 for 2023 without scoring any category, so it is not a measured result.
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.