Meredith G. Matzkin, M.D.
Ophthalmology Physician · Thousand Oaks, CA
Meredith G. Matzkin, M.D. is an ophthalmology physician with a practice address in Thousand Oaks, California, and NPI 1114141488, issued on Apr 11, 2007. Check the license (California A22909, as entered in NPPES) on the Medical Board of California; the Medicare figures below come from public CMS files.
- Name
- Meredith G. Matzkin
- Credential
- M.D.
- Primary taxonomy
- Ophthalmology Physician 207W00000X
- License number
- A22909 CA
Self-reported in NPPES; status is on the state search - Practice location
- 2230 Lynn RD, Thousand Oaks, CA 91360
- Phone
- (805) 495-0458
- Enumerated
- Apr 11, 2007
- Record last updated
- Sep 30, 2014 (not updated in 12 years: call before relying on the address or phone)
- Fax
- (805) 494-9630
- Entity
- Type 1 · individual
8 nearest ophthalmology physician records → All 2,899 in California → Look up another NPI →
Also registered at 2230 Lynn RD
A shared address usually means a shared clinic or building; it does not show who employs whom.
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Verify Meredith G. Matzkin in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersMedical Board of California
Search for license A22909Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
99% fewer Medicare Part D claims than the average ophthalmology physician in 2024
20 Medicare Part D claims, against an average of 1,518 among the 16,459 providers of this specialty who prescribed in Part D.
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.
Meredith G. Matzkin among 2,899 ophthalmology physician records in California
Meredith G. Matzkin, M.D. is one of 2,899 ophthalmology physician records with a practice address in California. 79% 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 55% of them.
- NPI issued2007 · 55% of these records are older, 33% newer
- In a Medicare fileYes · 79% of these records are
- In the CMS Doctors and Clinicians fileNo · 66% of these records are
- Record last updated2014 · 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 207W00000X and a California practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
Ophthalmology Physician providers in California
There are 2,899 ophthalmology physician records in California.
All 2,899 in California → Every provider in Thousand Oaks → Ophthalmology Physician nationwide →
The 8 ophthalmology physician records with the nearest ZIP codes
- Roy Butera, M.D.Thousand Oaks, CA 913601730205337
- Joshua Hedaya, M.D.Thousand Oaks, CA 913601881618023
- Devin Hymas, M.D.Thousand Oaks, CA 913601538383864
- Pezhman Nazemi, M.D.Thousand Oaks, CA 913601154509495
- Adam Abroms, MDWestlake Village, CA 913611497743702
- Steven Corwin, MDThousand Oaks, CA 913611720089964
- Paul Dougherty, M.D.Westlake Village, CA 913611083744775
- Daniel Ebroon, M.D.Thousand Oaks, CA 913611023050655
Common questions
What is Meredith G. Matzkin, M.D.'s NPI number?
Meredith G. Matzkin, M.D.'s National Provider Identifier (NPI) is 1114141488, issued on Apr 11, 2007. An NPI identifies a provider in billing; it is not a license.
Where is Meredith G. Matzkin, M.D. located?
The NPPES record lists a practice address at 2230 Lynn RD, Thousand Oaks, CA, 91360. Phone: (805) 495-0458. Providers update this record themselves, so call before visiting.
How can I verify Meredith G. Matzkin, M.D.'s license?
NPPES lists California license number A22909, 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 Meredith G. Matzkin, M.D. prescribe under Medicare Part D?
In 2024, Meredith G. Matzkin, M.D. had 20 Medicare Part D claims; the average among ophthalmology physician prescribers was 1,518. 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.