Mark B. Byers, O.D.
Optometrist · Marysville, CA
Mark B. Byers, O.D. is an optometrist with a practice address in Marysville, California, and NPI 1164551966, issued on Mar 5, 2007. Check the license (California 11554T, as entered in NPPES) with the California board that licenses this profession; the Medicare figures below come from public CMS files.
- Name
- Mark B. Byers
- Credential
- O.D.
- Primary taxonomy
- Optometrist 152W00000X
- License number
- 11554T CA
Self-reported in NPPES; status is on the state search - Practice location
- 429 D St, Marysville, CA 95901
- Phone
- (530) 742-1679
- Enumerated
- Mar 5, 2007
- Record last updated
- Sep 27, 2023
- Fax
- (530) 742-1233
- Medicare enrollment
- Enrolled (PECOS I20040401000971); accepts Medicare assignment
- Entity
- Type 1 · individual
8 nearest optometrist records → All 8,308 in California → Look up another NPI →
Also registered at 429 D St
A shared address usually means a shared clinic or building; it does not show who employs whom.
- Charles RichardsOptometrist1275543712
Verify Mark B. Byers in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersWhich California board licenses this profession
Search for license 11554TCheck the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
86% fewer Medicare Part D claims than the average optometrist in 2024
38 Medicare Part D claims for 17 beneficiaries, against an average of 277 among the 33,128 providers of this specialty who prescribed in Part D. Brand-name drugs were 55% of 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.
Mark B. Byers among 8,308 optometrist records in California
Mark B. Byers, 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 2007, is newer than 34% of them.
- NPI issued2007 · 34% of these records are older, 46% newer
- In a Medicare fileYes · 67% of these records are
- In the CMS Doctors and Clinicians fileYes · 43% of these records are
- Graduated1995 · median 2008 among the 3,573 with a school on file
- Record last updated2023 · 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).
Optometrist providers in California
There are 8,308 optometrist records in California.
All 8,308 in California → Every provider in Marysville → Optometrist nationwide →
The 8 optometrist records with the nearest ZIP codes
- Dennis Fellner, O.DMarysville, CA 959011740282086
- Charles RichardsMarysville, CA 959011275543712
- Marites Salazar, O.D.Marysville, CA 959011750699476
- Baljit Sohal, O.DMarysville, CA 959011134470636
- Kaitlin Soracco, O.D.Marysville, CA 959011881148179
- Prince Denson, ODBeale Afb, CA 959031891582334
- Michael Osterhoudt, O.D.Beale Afb, CA 959031821017351
- Wanda Parham, O.D.Beale Afb, CA 959031285931527
Common questions
What is Mark B. Byers, O.D.'s NPI number?
Mark B. Byers, O.D.'s National Provider Identifier (NPI) is 1164551966, issued on Mar 5, 2007. An NPI identifies a provider in billing; it is not a license.
Where is Mark B. Byers, O.D. located?
The NPPES record lists a practice address at 429 D St, Marysville, CA, 95901. Phone: (530) 742-1679. Providers update this record themselves, so call before visiting.
How can I verify Mark B. Byers, O.D.'s license?
NPPES lists California license number 11554T, as entered by the provider. Search the California board that licenses this profession; the NPPES record confirms identity only.
How much does Mark B. Byers, O.D. prescribe under Medicare Part D?
In 2024, Mark B. Byers, O.D. had 38 Medicare Part D claims for 17 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.