Gerald Dennis Chan, O.D.
Optometrist · Grass Valley, CA
Gerald Dennis Chan, O.D. is an optometrist with a practice address in Grass Valley, California, and NPI 1275525644, issued on Aug 22, 2005. Check the license (California 5832 T, as entered in NPPES) with the California board that licenses this profession; the Medicare figures below come from public CMS files.
- Name
- Gerald Dennis Chan
- Credential
- O.D.
- Primary taxonomy
- Optometrist 152W00000X
- License number
- 5832 T CA
Self-reported in NPPES; status is on the state search - Practice location
- 360 Sierra College Dr, Grass Valley, CA 95945
- Phone
- (530) 273-3190
- Enumerated
- Aug 22, 2005
- Record last updated
- Aug 19, 2008 (not updated in 18 years: call before relying on the address or phone)
- Fax
- (530) 273-5541
- Medicaid ID
- YYY49206Y CA
- Medicare enrollment
- Enrolled (PECOS I20081110000568); accepts Medicare assignment
- Medical or professional school
- University Of California - School Of Optometry, 1975
- Entity
- Type 1 · individual
8 nearest optometrist records → All 8,308 in California → Look up another NPI →
Also registered at 360 Sierra College Dr
A shared address usually means a shared clinic or building; it does not show who employs whom.
- Tiffany Chan, O.D.Low Vision Rehabilitation Optometrist1528374246
- Donna Murtaugh, CRNPAdult Health Nurse Practitioner1225335920
- Jon Pritchett, M.D.Family Medicine Physician1275554867
- Monica Rodriguez-Bayes, O.D.Optometrist1952856122
Verify Gerald Dennis Chan in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersWhich California board licenses this profession
Search for license 5832 TCheck the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
78% fewer Medicare Part D claims than the average optometrist in 2024
61 Medicare Part D claims for 16 beneficiaries, against an average of 277 among the 33,128 providers of this specialty who prescribed in Part D. Brand-name drugs were 52% of claims.
Most prescribed
- Latanoprost39 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: $17.23
1 payment: food and beverage; the largest payer was CooperVision 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
- Chan Family Vision Care Optometric IncGrass Valley, CA
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
Gerald Dennis Chan among 8,308 optometrist records in California
Gerald Dennis Chan, 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 2005, is newer than 0% of them.
- NPI issued2005 · 0% of these records are older, 94% newer
- In a Medicare fileYes · 67% of these records are
- In the CMS Doctors and Clinicians fileYes · 43% of these records are
- Graduated1975 · median 2008 among the 3,573 with a school on file
- Record last updated2008 · 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 Grass Valley → Optometrist nationwide →
The 8 optometrist records with the nearest ZIP codes
- Tomas BorskyGrass Valley, CA 959451548219348
- Layne Christensen, O.D.Grass Valley, CA 959451730125477
- James Hagele, M.D.Grass Valley, CA 959451528096336
- Tanya Markis-Meyer, ODGrass Valley, CA 959451164457891
- Monica Rodriguez-Bayes, O.D.Grass Valley, CA 959451952856122
- Lizabeth Thomas, ODGrass Valley, CA 959451679311674
- Kevin Woodburn, O.D.Grass Valley, CA 959451912953217
- Donald Beilstein, O.D.Penn Valley, CA 959461619141058
Common questions
What is Gerald Dennis Chan, O.D.'s NPI number?
Gerald Dennis Chan, O.D.'s National Provider Identifier (NPI) is 1275525644, issued on Aug 22, 2005. An NPI identifies a provider in billing; it is not a license.
Where is Gerald Dennis Chan, O.D. located?
The NPPES record lists a practice address at 360 Sierra College Dr, Grass Valley, CA, 95945. Phone: (530) 273-3190. Providers update this record themselves, so call before visiting.
How can I verify Gerald Dennis Chan, O.D.'s license?
NPPES lists California license number 5832 T, as entered by the provider. Search the California board that licenses this profession; the NPPES record confirms identity only.
How much does Gerald Dennis Chan, O.D. prescribe under Medicare Part D?
In 2024, Gerald Dennis Chan, O.D. had 61 Medicare Part D claims for 16 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.