Aaron Gershon Filler, M.D., PH.D.
Neurological Surgery Physician · Santa Monica, CA
Aaron Gershon Filler, M.D., PH.D. is a neurological surgery physician with a practice address in Santa Monica, California, and NPI 1225189871, issued on Jan 12, 2007. Check the license (California G81778, as entered in NPPES) on the Medical Board of California; the Medicare figures below come from public CMS files.
- Name
- Aaron Gershon Filler
- Credential
- M.D., PH.D.
- Primary taxonomy
- Neurological Surgery Physician 207T00000X
- License number
- G81778 CA
Self-reported in NPPES; status is on the state search - Practice location
- 900 Wilshire Blvd Ste 310, Santa Monica, CA 90401
- Phone
- (310) 314-6410
- Enumerated
- Jan 12, 2007
- Record last updated
- Jul 29, 2022
- Fax
- (310) 496-0185
- Entity
- Type 1 · individual
8 nearest neurological surgery physician records → All 929 in California → Look up another NPI →
Verify Aaron Gershon Filler in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersMedical Board of California
Search for license G81778Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
12% fewer Medicare Part D claims than the average neurological surgery physician in 2024
152 Medicare Part D claims for 27 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
- Donepezil Hcl60 claims
- Memantine Hcl57 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.
Aaron Gershon Filler among 929 neurological surgery physician records in California
Aaron Gershon Filler, M.D., PH.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 fileNo · 66% of these records are
- Record last updated2022 · 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
- Max Kahn, M.D.Santa Monica, CA 904011053793315
- Daniel Lu, M.D.Santa Monica, CA 904011457585903
- Jerry Noel, D.O.Santa Monica, CA 904011235334038
- Brian Gantwerker, M.D.Santa Monica, CA 904031609842715
- 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
Common questions
What is Aaron Gershon Filler, M.D., PH.D.'s NPI number?
Aaron Gershon Filler, M.D., PH.D.'s National Provider Identifier (NPI) is 1225189871, issued on Jan 12, 2007. An NPI identifies a provider in billing; it is not a license.
Where is Aaron Gershon Filler, M.D., PH.D. located?
The NPPES record lists a practice address at 900 Wilshire Blvd Ste 310, Santa Monica, CA, 90401. Phone: (310) 314-6410. Providers update this record themselves, so call before visiting.
How can I verify Aaron Gershon Filler, M.D., PH.D.'s license?
NPPES lists California license number G81778, 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 Aaron Gershon Filler, M.D., PH.D. prescribe under Medicare Part D?
In 2024, Aaron Gershon Filler, M.D., PH.D. had 152 Medicare Part D claims for 27 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.