Brian Randall Gantwerker, M.D.
Neurological Surgery Physician · Santa Monica, CA
Brian Randall Gantwerker, M.D. is a neurological surgery physician with a practice address in Santa Monica, California, and NPI 1609842715, issued on Feb 28, 2006. Check the license (California A109316, as entered in NPPES) on the Medical Board of California; the Medicare figures below come from public CMS files.
- Name
- Brian Randall Gantwerker
- Credential
- M.D.
- Primary taxonomy
- Neurological Surgery Physician 207T00000X
- License number
- A109316 CA
Self-reported in NPPES; status is on the state search - Practice location
- 2811 Wilshire Blvd, Santa Monica, CA 90403
- Phone
- (310) 694-8300
- Enumerated
- Feb 28, 2006
- Record last updated
- Jun 14, 2016 (not updated in 10 years: call before relying on the address or phone)
- Fax
- (310) 694-8357
- Entity
- Type 1 · individual
8 nearest neurological surgery physician records → All 929 in California → Look up another NPI →
Also registered at 2811 Wilshire Blvd
A shared address usually means a shared clinic or building; it does not show who employs whom.
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Verify Brian Randall Gantwerker in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersMedical Board of California
Search for license A109316Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
51% fewer Medicare Part D claims than the average neurological surgery physician in 2024
85 Medicare Part D claims for 34 beneficiaries, against an average of 172 among the 4,378 providers of this specialty who prescribed in Part D. Brand-name drugs were 0% of claims.
Most prescribed
- Gabapentin26 claims
- Pantoprazole Sodium16 claims
- Tizanidine Hcl12 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: $1,783.63
12 payments; by number, the most common kind was food and beverage; the largest payer was Spineology 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.
Brian Randall Gantwerker among 929 neurological surgery physician records in California
Brian Randall Gantwerker, 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 2006, is newer than 5% of them.
- NPI issued2006 · 5% of these records are older, 62% newer
- In a Medicare fileYes · 77% of these records are
- In the CMS Doctors and Clinicians fileNo · 66% of these records are
- Record last updated2016 · 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 Santa Monica → Neurological Surgery Physician nationwide →
The 8 neurological surgery physician records with the nearest ZIP codes
- Deven Khosla, M.D.Santa Monica, CA 904031013962885
- Daniel Nagasawa, MDSanta Monica, CA 904031578820536
- J Rich, MDSanta Monica, CA 904031598820086
- Amir Vokshoor, M.D.Santa Monica, CA 904031649204983
- Garni Barkhoudarian, MDSanta Monica, CA 904041578707642
- Daniel Kelly, MDSanta Monica, CA 904041306857982
- Brandon LaingSanta Monica, CA 904041255820957
- Nancy McLaughlin, MD, PHD, FRCSCSanta Monica, CA 904041780907949
Common questions
What is Brian Randall Gantwerker, M.D.'s NPI number?
Brian Randall Gantwerker, M.D.'s National Provider Identifier (NPI) is 1609842715, issued on Feb 28, 2006. An NPI identifies a provider in billing; it is not a license.
Where is Brian Randall Gantwerker, M.D. located?
The NPPES record lists a practice address at 2811 Wilshire Blvd, Santa Monica, CA, 90403. Phone: (310) 694-8300. Providers update this record themselves, so call before visiting.
How can I verify Brian Randall Gantwerker, M.D.'s license?
NPPES lists California license number A109316, 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 Brian Randall Gantwerker, M.D. prescribe under Medicare Part D?
In 2024, Brian Randall Gantwerker, M.D. had 85 Medicare Part D claims for 34 beneficiaries; the average among neurological surgery physician prescribers was 172. 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.