Marc Dea, OD
Optometrist · Castro Valley, CA
Marc Dea, OD is an optometrist with a practice address in Castro Valley, California, and NPI 1174592646, issued on Mar 16, 2006. Check the license (California 11124T, as entered in NPPES) with the California board that licenses this profession; the Medicare figures below come from public CMS files.
- Name
- Marc Dea
- Credential
- OD
- Primary taxonomy
- Optometrist 152W00000X
- License number
- 11124T CA
Self-reported in NPPES; status is on the state search - Practice location
- 2687 Castro Valley Blvd, Castro Valley, CA 94546
- Phone
- (510) 581-1553
- Enumerated
- Mar 16, 2006
- Record last updated
- Aug 20, 2014 (not updated in 12 years: call before relying on the address or phone)
- Fax
- (510) 581-1929
- Medicaid IDs
- GSD000960 CA
GR0022890 CA - Medicare enrollment
- Enrolled (PECOS I20080711000505); accepts Medicare assignment
- Entity
- Type 1 · individual
8 nearest optometrist records → All 8,308 in California → Look up another NPI →
Also registered at 2687 Castro Valley Blvd
A shared address usually means a shared clinic or building; it does not show who employs whom.
- Stella Levin, O.D.Optometrist1235197138
- Gary Osias, O.D.Optometrist1639230923
Verify Marc Dea in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersWhich California board licenses this profession
Search for license 11124TCheck the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
92% fewer Medicare Part D claims than the average optometrist in 2024
23 Medicare Part D claims for 18 beneficiaries, against an average of 277 among the 33,128 providers of this specialty who prescribed in Part D.
Most prescribed
- Tobramycin-Dexamethasone11 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: $144.59
6 payments; by number, the most common kind was food and beverage; the largest payer was Alcon Vision LLC. 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
- For Your Eyes Only Ophthalmic Medical CorpWalnut Creek, CA
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
Marc Dea among 8,308 optometrist records in California
Marc Dea, OD 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 2006, is newer than 6% of them.
- NPI issued2006 · 6% of these records are older, 66% newer
- In a Medicare fileYes · 67% of these records are
- In the CMS Doctors and Clinicians fileYes · 43% of these records are
- Graduated1999 · median 2008 among the 3,573 with a school on file
- 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 152W00000X and a California practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
24 optometrist records list a practice address in Castro Valley
They are 24 of the 999 NPPES records with a practice address in Castro Valley, and 8,308 optometrist records in California.
All 8,308 in California → Every provider in Castro Valley → Optometrist nationwide →
The 8 optometrist records with the nearest ZIP codes
- Christina Atkinson, O.D.Castro Valley, CA 945461619981792
- Sampson Fong, O. D.Castro Valley, CA 945461396861522
- Stella Levin, O.D.Castro Valley, CA 945461235197138
- Yuanbing Liao, O.D.Castro Valley, CA 945461497060875
- John LiuCastro Valley, CA 945461114949419
- Kaiyun Mai, O.D.Castro Valley, CA 945461730436643
- John Nelson, O.D.Castro Valley, CA 945461922095082
- Mary Nguyen, O.D.Castro Valley, CA 945461285981274
Common questions
What is Marc Dea, OD's NPI number?
Marc Dea, OD's National Provider Identifier (NPI) is 1174592646, issued on Mar 16, 2006. An NPI identifies a provider in billing; it is not a license.
Where is Marc Dea, OD located?
The NPPES record lists a practice address at 2687 Castro Valley Blvd, Castro Valley, CA, 94546. Phone: (510) 581-1553. Providers update this record themselves, so call before visiting.
How can I verify Marc Dea, OD's license?
NPPES lists California license number 11124T, as entered by the provider. Search the California board that licenses this profession; the NPPES record confirms identity only.
How much does Marc Dea, OD prescribe under Medicare Part D?
In 2024, Marc Dea, OD had 23 Medicare Part D claims for 18 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.