Ralph Simon Baker, O.D.
Optometrist · Roseville, CA
Ralph Simon Baker, O.D. is an optometrist with a practice address in Roseville, California, and NPI 1861430043, issued on Jun 2, 2006. Check the license (California 8662T, as entered in NPPES) with the California board that licenses this profession; the Medicare figures below come from public CMS files.
- Name
- Ralph Simon Baker
- Credential
- O.D.
- Primary taxonomy
- Optometrist 152W00000X
- License number
- 8662T CA
Self-reported in NPPES; status is on the state search - Practice location
- 9221 Sierra College Blvd Ste 130, Roseville, CA 95661
- Phone
- (916) 797-6747
- Enumerated
- Jun 2, 2006
- Record last updated
- Nov 7, 2023
- Fax
- (916) 797-6728
- Medicaid ID
- SD0086620 CA
- Medicare enrollment
- Enrolled (PECOS I20050316001039); may accept Medicare assignment
- Entity
- Type 1 · individual
8 nearest optometrist records → All 8,308 in California → Look up another NPI →
Also registered at 9221 Sierra College Blvd Ste 130
A shared address usually means a shared clinic or building; it does not show who employs whom.
- Randall Fuerst, O.D.Optometrist1902998966
- Kiran Gill, ODOptometrist1386138121
- Alyssa Matsuo, ODOptometrist1629622543
Verify Ralph Simon Baker in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersWhich California board licenses this profession
Search for license 8662TCheck the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
68% fewer Medicare Part D claims than the average optometrist in 2024
89 Medicare Part D claims for 37 beneficiaries, against an average of 277 among the 33,128 providers of this specialty who prescribed in Part D. Brand-name drugs were 40% of claims.
Most prescribed
- Latanoprost31 claims
- Brimonidine Tartrate22 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: $1,320.23
34 payments; by number, the most common kind was food and beverage; the largest payer was Biotissue Holdings 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
- Granite Pointe Eye Care IncRoseville, CA
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
Ralph Simon Baker among 8,308 optometrist records in California
Ralph Simon Baker, 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 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
- Graduated1987 · 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 Roseville → Optometrist nationwide →
The 8 optometrist records with the nearest ZIP codes
- Satinder Bains, O.D.Roseville, CA 956611710025978
- Vincent Cianci, O.D.Roseville, CA 956611528126976
- Randall Fuerst, O.D.Roseville, CA 956611902998966
- Alissa Hoekstra, O.D.Roseville, CA 956611205896180
- Lisa Hornick, O.D.Roseville, CA 956611720068844
- Aaron Lech, O.D.Roseville, CA 956611053365254
- Jesse Lund, O.D.Roseville, CA 956611497891238
- John Okamoto, O.D.Roseville, CA 956611760462956
Common questions
What is Ralph Simon Baker, O.D.'s NPI number?
Ralph Simon Baker, O.D.'s National Provider Identifier (NPI) is 1861430043, issued on Jun 2, 2006. An NPI identifies a provider in billing; it is not a license.
Where is Ralph Simon Baker, O.D. located?
The NPPES record lists a practice address at 9221 Sierra College Blvd Ste 130, Roseville, CA, 95661. Phone: (916) 797-6747. Providers update this record themselves, so call before visiting.
How can I verify Ralph Simon Baker, O.D.'s license?
NPPES lists California license number 8662T, as entered by the provider. Search the California board that licenses this profession; the NPPES record confirms identity only.
How much does Ralph Simon Baker, O.D. prescribe under Medicare Part D?
In 2024, Ralph Simon Baker, O.D. had 89 Medicare Part D claims for 37 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.