Marzena Kelder Gilbert, O.D.
Optometrist · Ventura, CA
Marzena Kelder Gilbert, O.D. is an optometrist with a practice address in Ventura, California, and NPI 1245504851, issued on Feb 29, 2012. Check the license (California 13959, as entered in NPPES) with the California board that licenses this profession; the Medicare figures below come from public CMS files.
- Name
- Marzena Kelder Gilbert
- Credential
- O.D.
- Primary taxonomy
- Optometrist 152W00000X
- License number
- 13959 CA
Self-reported in NPPES; status is on the state search - Practice location
- 1280 S Victoria Ave, Ventura, CA 93003
- Phone
- (805) 650-9922
- Enumerated
- Feb 29, 2012
- Record last updated
- Aug 10, 2012 (not updated in 14 years: call before relying on the address or phone)
- Medicare enrollment
- Enrolled (PECOS I20150109001886); accepts Medicare assignment
- Medical or professional school
- Southern California College Of Optometry, 2010
- Entity
- Type 1 · individual
8 nearest optometrist records → All 8,308 in California → Look up another NPI →
Also registered at 1280 S Victoria Ave
A shared address usually means a shared clinic or building; it does not show who employs whom.
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Verify Marzena Kelder Gilbert in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersWhich California board licenses this profession
Search for license 13959Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
40% fewer Medicare Part D claims than the average optometrist in 2024
166 Medicare Part D claims for 64 beneficiaries, against an average of 277 among the 33,128 providers of this specialty who prescribed in Part D. Brand-name drugs were 50% of claims.
Most prescribed
- Neomycin-Polymyxin-Dexameth33 claims
- Latanoprost25 claims
- Miebo24 claims
- Lumigan17 claims
- Travoprost12 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: $203.91
9 payments; by number, the most common kind was food and beverage; the largest payer was Bausch & Lomb Americas Inc. The 34,453 providers of this specialty with any payment received $769.99 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
- Ventura Optometric Vision Care Inc.Ventura, CA
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
Marzena Kelder Gilbert among 8,308 optometrist records in California
Marzena Kelder Gilbert, O.D. is one of 8,308 optometrist records with a practice address in California. 67% of them appear in a Medicare file (Part D prescribing, MIPS, Open Payments or Medicare group billing); this one does. Its NPI, issued in 2012, is newer than 64% of them.
- NPI issued2012 · 64% of these records are older, 34% newer
- In a Medicare fileYes · 67% of these records are
- In the CMS Doctors and Clinicians fileYes · 43% of these records are
- Graduated2010 · median 2008 among the 3,573 with a school on file
- Record last updated2012 · 67% of these records were not updated in five years or more
Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 152W00000X and a California practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
51 optometrist records list a practice address in Ventura
They are 51 of the 4,435 NPPES records with a practice address in Ventura, and 8,308 optometrist records in California.
All 8,308 in California → Every provider in Ventura → Optometrist nationwide →
The 8 optometrist records with the nearest ZIP codes
- Richard Blue, ODVentura, CA 930031366523193
- Michael Boggs, O.D.Ventura, CA 930031447287503
- Mark Bozek, O.D.Ventura, CA 930031649249319
- Mark Brunette, O.D.Ventura, CA 930031538105846
- Dan Clower, O.D.Ventura, CA 930031720015811
- James Deardorff, O.D.Ventura, CA 930031598780611
- John Floryan, O.D.Ventura, CA 930031700853462
- Thomas Funnell, ODVentura, CA 930031851401020
Common questions
What is Marzena Kelder Gilbert, O.D.'s NPI number?
Marzena Kelder Gilbert, O.D.'s National Provider Identifier (NPI) is 1245504851, issued on Feb 29, 2012. An NPI identifies a provider in billing; it is not a license.
Where is Marzena Kelder Gilbert, O.D. located?
The NPPES record lists a practice address at 1280 S Victoria Ave, Ventura, CA, 93003. Phone: (805) 650-9922. Providers update this record themselves, so call before visiting.
How can I verify Marzena Kelder Gilbert, O.D.'s license?
NPPES lists California license number 13959, as entered by the provider. Search the California board that licenses this profession; the NPPES record confirms identity only.
How much does Marzena Kelder Gilbert, O.D. prescribe under Medicare Part D?
In 2024, Marzena Kelder Gilbert, O.D. had 166 Medicare Part D claims for 64 beneficiaries; the average among optometrist prescribers was 277. 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.