Gerald Dennis Chan, OD
- Medicare patients, 2024
- 107
- Part D claims, 2024
- 61
- Affiliated sites
- 1
- Medical group
- 1
- State license
- 1
- Practice address
- 360 Sierra College Dr, Grass Valley, CA 95945
- Practice phone
- Call (530) 273-3190
- Professional email
- Get professional email
- Personal email
- Get personal email
- Mobile number
- Get mobile number
Primary practice
Chan Family Vision Care Optometric Inc
Grass Valley, California
Find Gerald Chan's professional email, personal email and mobile number
Dmand AI checks each channel through healthcare-specific waterfall enrichment. See what is on file with a free account, with practice phones, licenses and affiliations.
Gerald Dennis Chan is an optometrist in Grass Valley, California
Gerald Chan practices at Chan Family Vision Care Optometric Inc in Grass Valley, California.
Gerald Chan's NPI, 1275525644, was assigned on August 22, 2005. Gerald Chan graduated from University of California - School of Optometry in 1975. Gerald Chan holds California license 5832 T.
- NPI
- 1275525644NPI Registry (opens in a new tab)
- Medicare PAC ID
- 1557420213
- NPI enumeration date
- August 22, 2005
- NPI status
- Active
- Accepts Medicare assignment
- Yes
- Practice phone
- (530) 273-3190
- Professional email
- Get email
- Personal email
- Get email
- Mobile number
- Get number
- Sex
- Male
- Estimated age
- 77
- Medical school graduation
- 1975
Sources: NPPES NPI Registry (CMS); Dmand AI Professional Profile Data; Dmand AI Practice Data; and Doctors and Clinicians National Downloadable File (CMS)
Gerald Dennis Chan practices at Chan Family Vision Care Optometric Inc in Grass Valley, California
Gerald Chan's primary practice is Chan Family Vision Care Optometric Inc, at 360 Sierra College Dr, Grass Valley, CA 95945 in Nevada County. The practice phone is (530) 273-3190.
- Chan Family Vision Care Optometric Inc360 Sierra College Dr, Grass Valley, CA 95945 · Nevada CountyPhone(530) 273-3190
Sources: NPPES NPI Registry (CMS); and Dmand AI Practice Data
Gerald Dennis Chan is affiliated with 2 sites of care and 1 medical group
Gerald Chan's primary practice is Chan Family Vision Care Optometric Inc in Grass Valley, California. Dmand AI also links Gerald Chan to 1 group practice or clinic and 1 medical group, each named with a free account.
Sources: NPPES NPI Registry (CMS); Dmand AI Practice Data; and Dmand AI Affiliation Data
Dmand AI tracks the EHR system at Gerald Dennis Chan's practice
Dmand AI tracks the electronic health record (EHR) system at each site where Gerald Chan practices. Vendor and product names are available with a free account.
| Site | EHR vendor and product |
|---|---|
| Chan Family Vision Care Optometric Inc | Available with a free account |
| +1 more site and 1 medical group | Available with a free account |
Source: Dmand AI Technology Install Data
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Gerald Dennis Chan is one of 7,206 optometrists in California
Optometrist is Gerald Chan's primary specialty in the NPI Registry, under taxonomy code 152W00000X. Gerald Chan is licensed in California.
Specialties and state licenses
- Optometrist, CaliforniaPrimary
Optometrists near Gerald Chan
Counts of optometrists with a Dmand AI profile, by place and practice. Each opens the list.
Sources: NPPES NPI Registry (CMS); Dmand AI Professional Profile Data; and Dmand AI Peer Benchmarks
Gerald Dennis Chan treated 107 Medicare patients in 2024, average age 77
CMS counts 107 Medicare patients who saw Gerald Chan in 2024. The largest group is 75 to 84, with 59 patients. 75% of them have high cholesterol, and 65% have high blood pressure. Their average risk score is 0.79, where 1.00 is the Medicare average.
Across all payers, Dmand AI patient panel data puts Gerald Chan's median patient age at 78, with 32% women.
Gerald Chan's Medicare patients by age, 2024
Gerald Chan's Medicare patients by sex, 2024
- Women4845%
- Men5955%
Chronic conditions among Gerald Chan's Medicare patients, 2024
- High cholesterol75%
- High blood pressure65%
- Arthritis44%
- Ischemic heart disease22%
- Chronic kidney disease17%
- Diabetes14%
- Atrial fibrillation13%
- Anxiety12%
Share of Medicare patients with each condition. A patient can have several.
Gerald Chan's patients across all payers
Dmand AI patient panel data covers Medicare, Medicaid and commercial patients.
Patient panel by age, all payers
Median age 78
Patient panel by sex, all payers
- Women32%
- Men68%
Sources: Dmand AI Patient Panel Data; and Medicare Physician & Other Practitioners - by Provider (CMS), 2024 data
Gerald Dennis Chan wrote 61 Medicare Part D claims in 2024
In 2024, Gerald Chan wrote 61 Medicare Part D claims for 16 patients. 48% of them were for generic drugs.
Gerald Chan's Part D claims by kind of drug, 2024
- Generic29 claims48%
- Brand-name32 claims52%
Source: Medicare Part D Prescribers - by Provider (CMS), 2024 data
How Gerald Dennis Chan takes part in Medicare
Gerald Chan accepts Medicare assignment, so Medicare's approved amount is taken as full payment.
- Accepts Medicare assignment
- Yes
Cataract surgery: 1 to 10 procedures (CMS shows small counts as a range)
Sources: Doctors and Clinicians National Downloadable File (CMS); and Doctors and Clinicians Utilization Data (CMS)
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Gerald Dennis Chan graduated from University of California - School of Optometry
Gerald Chan graduated from University of California - School of Optometry in 1975.
- Medical school
Source: Dmand AI Professional Profile Data
Sources for Gerald Dennis Chan's profile data
| Data on this page | Source |
|---|---|
| NPI, name, sex, specialty and licenses | NPPES NPI Registry (CMS) (opens in a new tab)Dmand AI Professional Profile Data |
| Practice locations and phone | NPPES NPI Registry (CMS) (opens in a new tab)Dmand AI Practice Data |
| Primary practice, affiliations and health system | NPPES NPI Registry (CMS) (opens in a new tab)Dmand AI Practice DataDmand AI Affiliation Data |
| Medicare patients and the all-payer patient panel | Dmand AI Patient Panel DataMedicare Physician & Other Practitioners - by Provider (CMS) (opens in a new tab) |
| Part D prescribing | Medicare Part D Prescribers - by Provider (CMS) (opens in a new tab) |
| MIPS scores, telehealth, assignment and procedure percentiles | Doctors and Clinicians National Downloadable File (CMS) (opens in a new tab)Doctors and Clinicians Utilization Data (CMS) (opens in a new tab) |
| Training, board certification and memberships | Dmand AI Professional Profile Data |
| EHR at each practice site | Dmand AI Technology Install Data |
| Similar physicians | Dmand AI Affiliation Data |
Data last refreshed October 2026Report an inaccuracyRemove my information
FAQ
Frequently asked questions about Gerald Dennis Chan
Spotted something out of date? Email hello@dmand.ai and we will check the record. Contact details live in the free trial.
What is Gerald Dennis Chan's NPI number?
Gerald Dennis Chan's NPI number is 1275525644. It was assigned on August 22, 2005, and it is active in the NPI Registry.
What does Gerald Dennis Chan specialize in?
Gerald Dennis Chan is an optometrist in Grass Valley, California. The primary specialty in the NPI Registry is Optometrist (taxonomy code 152W00000X).
Where does Gerald Dennis Chan practice?
Gerald Chan practices at 360 Sierra College Dr, Grass Valley, CA 95945. Gerald Chan's primary practice is Chan Family Vision Care Optometric Inc in Grass Valley, California. Dmand AI also links Gerald Chan to 1 group practice or clinic and 1 medical group.
What is Gerald Dennis Chan's office phone number?
The practice phone on file for Gerald Chan is (530) 273-3190.
What is Gerald Dennis Chan's medical license number?
Gerald Chan holds California license 5832 T.
Does Gerald Dennis Chan accept Medicare?
Yes. CMS lists Gerald Chan as accepting Medicare assignment.
How many Medicare patients does Gerald Dennis Chan see?
CMS counts 107 Medicare patients who saw Gerald Chan in 2024, with an average age of 77.
Where did Gerald Dennis Chan go to medical school?
Gerald Chan graduated from University of California - School of Optometry in 1975.
How long has Gerald Dennis Chan been practicing?
Gerald Chan graduated from medical school in 1975, 51 years ago.
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