Gerald Dennis Chan, OD

  • Grass Valley, CA
  • Optometrist
NPI1275525644PAC ID1557420213
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
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Mobile number
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Social profiles

Primary practice

Chan Family Vision Care Optometric Inc

Grass Valley, California

See all 3 affiliations

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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 and contact details
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
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Mobile number
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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 Inc
    360 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.

Chan Family Vision Care Optometric IncGrass Valley, CaliforniaPrimary
1 group practice or clinicName with a free account1 medical groupName with a free account
See all 3 affiliations for Gerald Chan

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.

EHR by site
SiteEHR vendor and product
Chan Family Vision Care Optometric IncAvailable with a free account
+1 more site and 1 medical groupAvailable 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, CaliforniaPrimaryLicense 5832 T · taxonomy 152W00000X

Optometrists near Gerald Chan

Counts of optometrists with a Dmand AI profile, by place and practice. Each opens the list.

7,206optometrists in California
6optometrists in Grass Valley

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.

Medicare patients, 2024107
Average age77
Average risk score0.79

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

  1. High cholesterol75%
  2. High blood pressure65%
  3. Arthritis44%
  4. Ischemic heart disease22%
  5. Chronic kidney disease17%
  6. Diabetes14%
  7. Atrial fibrillation13%
  8. 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.

Part D claims, 202461
Part D patients16

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.

  1. Medical schoolUniversity of California - School of Optometry

Source: Dmand AI Professional Profile Data

Sources for Gerald Dennis Chan's profile data

Sources for the data on this page
Data on this pageSource
NPI, name, sex, specialty and licensesNPPES NPI Registry (CMS) (opens in a new tab)Dmand AI Professional Profile Data
Practice locations and phoneNPPES NPI Registry (CMS) (opens in a new tab)Dmand AI Practice Data
Primary practice, affiliations and health systemNPPES NPI Registry (CMS) (opens in a new tab)Dmand AI Practice DataDmand AI Affiliation Data
Medicare patients and the all-payer patient panelDmand AI Patient Panel DataMedicare Physician & Other Practitioners - by Provider (CMS) (opens in a new tab)
Part D prescribingMedicare Part D Prescribers - by Provider (CMS) (opens in a new tab)
MIPS scores, telehealth, assignment and procedure percentilesDoctors 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 membershipsDmand AI Professional Profile Data
EHR at each practice siteDmand AI Technology Install Data
Similar physiciansDmand 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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