David Brian Gunn, MD
Family Medicine Physician · Westlake Village, CA
David Brian Gunn, MD is a family medicine physician with a practice address in Westlake Village, California, and NPI 1215163035, issued on Jun 8, 2009. Check the license (California A123461, as entered in NPPES) on the Medical Board of California; the Medicare figures below come from public CMS files.
- Name
- David Brian Gunn
- Credential
- MD
- Primary taxonomy
- Family Medicine Physician 207Q00000X
- License number
- A123461 CA
Self-reported in NPPES; status is on the state search - Practice location
- 2829 Townsgate RD Ste 100, Westlake Village, CA 91361
- Phone
- (424) 422-0324
- Enumerated
- Jun 8, 2009
- Record last updated
- Dec 16, 2025
- Fax
- (424) 855-8796
- Entity
- Type 1 · individual
8 nearest family medicine physician records → All 17,133 in California → Look up another NPI →
Also registered at 2829 Townsgate RD Ste 100
A shared address usually means a shared clinic or building; it does not show who employs whom.
- Diane Lipson, PH.D.Clinical Psychologist1194755769
Verify David Brian Gunn in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersMedical Board of California
Search for license A123461Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
35% fewer Medicare Part D claims than the average family medicine physician in 2024
2,302 Medicare Part D claims for 314 beneficiaries, against an average of 3,544 among the 117,163 providers of this specialty who prescribed in Part D. Brand-name drugs were 8% of claims.
Most prescribed
- Atorvastatin Calcium284 claims
- Losartan Potassium119 claims
- Rosuvastatin Calcium104 claims
- Levothyroxine Sodium98 claims
- Amlodipine Besylate77 claims
- Metformin Hcl56 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: $196.89
1 payment: food and beverage; the largest payer was Abbott Laboratories. The 55,478 providers of this specialty with any payment received $902.55 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.
David Brian Gunn among 17,133 family medicine physician records in California
David Brian Gunn, MD 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 2009, is newer than 58% of them.
- NPI issued2009 · 58% of these records are older, 40% newer
- In a Medicare fileYes · 81% of these records are
- In the CMS Doctors and Clinicians fileNo · 62% of these records are
- Record last updated2025 · 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).
19 family medicine physician records list a practice address in Westlake Village
They are 19 of the 1,397 NPPES records with a practice address in Westlake Village, and 17,133 family medicine physician records in California.
All 17,133 in California → Every provider in Westlake Village → Family Medicine Physician nationwide →
The 8 family medicine physician records with the nearest ZIP codes
- Irina Feldman, M.D.Thousand Oaks, CA 913611417919721
- Alicia Guevara, M.D.Thousand Oaks, CA 913611629295217
- Bader Iqbal, M.D.Thousand Oaks, CA 913611346254364
- Chelsey Kahanowitch, D.O.Westlake Village, CA 913611750743530
- Razmig Krumian, D.O.Westlake Village, CA 913611720064462
- Darrick Lee, D.O.Westlake Village, CA 913611811424682
- Amy Lin, M.D.Westlake Village, CA 913611770511081
- Mike Oulashian, M.D.Thousand Oaks, CA 913611164694212
Common questions
What is David Brian Gunn, MD's NPI number?
David Brian Gunn, MD's National Provider Identifier (NPI) is 1215163035, issued on Jun 8, 2009. An NPI identifies a provider in billing; it is not a license.
Where is David Brian Gunn, MD located?
The NPPES record lists a practice address at 2829 Townsgate RD Ste 100, Westlake Village, CA, 91361. Phone: (424) 422-0324. Providers update this record themselves, so call before visiting.
How can I verify David Brian Gunn, MD's license?
NPPES lists California license number A123461, 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 Brian Gunn, MD prescribe under Medicare Part D?
In 2024, David Brian Gunn, MD had 2,302 Medicare Part D claims for 314 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.