Karen H. Chao, OD
- Medicare patients, 2024
- 119
- Industry payments
- $407
- Affiliated sites
- 2
- Medical group
- 1
- State license
- 1
- Practice address
- 121 S Del Mar Ave, San Gabriel, CA 91776-1345
- Practice phone
- Call (626) 287-0401
- Professional email
- Get professional email
- Personal email
- Get personal email
- Mobile number
- Get mobile number
Primary practice
San Gabriel Family Optometry
Physician office · San Gabriel, California
Find Karen Chao'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.
Karen H. Chao is an optometrist in San Gabriel, California
Karen Chao practices at San Gabriel Family Optometry in San Gabriel, California.
Karen Chao's NPI, 1013953108, was assigned on June 20, 2006. Karen Chao graduated from Southern California College of Optometry in 1994. Karen Chao holds California license OPT 10301 TPA.
- NPI
- 1013953108NPI Registry (opens in a new tab)
- Medicare PAC ID
- 9234285933
- NPI enumeration date
- June 20, 2006
- NPI status
- Active
- Accepts Medicare assignment
- Yes
- Practice phone
- (626) 287-0401
- Professional email
- Get email
- Personal email
- Get email
- Mobile number
- Get number
- Sex
- Female
- Estimated age
- 58
- Medical school graduation
- 1994
Sources: NPPES NPI Registry (CMS); Dmand AI Professional Profile Data; Dmand AI Affiliation Data; and Doctors and Clinicians National Downloadable File (CMS)
Karen H. Chao practices at San Gabriel Family Optometry in San Gabriel, California
Karen Chao's primary practice is San Gabriel Family Optometry, at 121 S Del Mar Ave, San Gabriel, CA 91776-1345. The practice phone is (626) 287-0401.
- San Gabriel Family Optometry121 S Del Mar Ave, San Gabriel, CA 91776-1345Phone(626) 287-0401
Source: Dmand AI Affiliation Data
Karen H. Chao is affiliated with 2 sites of care and 1 medical group
Karen Chao's primary practice is San Gabriel Family Optometry in San Gabriel, California. Dmand AI also links Karen Chao to 1 group practice or clinic and 1 medical group, each named with a free account.
Source: Dmand AI Affiliation Data
Dmand AI tracks the EHR system at Karen H. Chao's practice
Dmand AI tracks the electronic health record (EHR) system at each site where Karen Chao practices, 2 sites in all. Vendor and product names are available with a free account.
| Site | EHR vendor and product |
|---|---|
| San Gabriel Family Optometry | 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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Karen H. Chao is one of 7,206 optometrists in California
Optometrist is Karen Chao's primary specialty in the NPI Registry, under taxonomy code 152W00000X. Karen Chao is licensed in California.
Specialties and state licenses
- Optometrist, CaliforniaPrimary
Optometrists near Karen Chao
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
Karen H. Chao treated 119 Medicare patients in 2024, average age 75
CMS counts 119 Medicare patients who saw Karen Chao in 2024. The largest group is 65 to 74, with 56 patients. 75% of them have high cholesterol, and 73% have high blood pressure. 26% are also on Medicaid. Their average risk score is 0.94, where 1.00 is the Medicare average.
Across all payers, Dmand AI patient panel data puts Karen Chao's median patient age at 74, with 61% women.
Karen Chao's Medicare patients by age, 2024
CMS leaves out age groups with fewer than 11 patients.
Karen Chao's Medicare patients by sex, 2024
- Women6958%
- Men5042%
Chronic conditions among Karen Chao's Medicare patients, 2024
- High cholesterol75%
- High blood pressure73%
- Arthritis38%
- Diabetes34%
- Ischemic heart disease27%
- Osteoporosis26%
- Chronic kidney disease25%
- Cancer22%
Share of Medicare patients with each condition. A patient can have several.
Karen Chao's patients across all payers
Dmand AI patient panel data covers Medicare, Medicaid and commercial patients.
Patient panel by age, all payers
Median age 74
Patient panel by sex, all payers
- Women61%
- Men39%
Sources: Dmand AI Patient Panel Data; and Medicare Physician & Other Practitioners - by Provider (CMS), 2024 data
How Karen H. Chao takes part in Medicare
Karen Chao accepts Medicare assignment, so Medicare's approved amount is taken as full payment.
- Accepts Medicare assignment
- Yes
Source: Doctors and Clinicians National Downloadable File (CMS)
Karen H. Chao received $407 in industry payments in 2025
CMS Open Payments shows 6 general payments to Karen Chao from 2 drug and device companies in 2025. Food and beverage make up the largest share, 100% of the total. Bausch & Lomb Americas Inc. paid the most, $240.
Companies that paid Karen Chao the most, 2025 to 2025
Share is of all general payments to this clinician.
Source: Open Payments (CMS), 2025 data, released July 7, 2026
Karen H. Chao graduated from Southern California College of Optometry
Karen Chao graduated from Southern California College of Optometry in 1994.
- Medical school
Source: Dmand AI Professional Profile Data
Sources for Karen H. Chao'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 | Dmand AI Affiliation Data |
| Primary practice, affiliations and health system | Dmand 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) |
| MIPS scores, telehealth, assignment and procedure percentiles | Doctors and Clinicians National Downloadable File (CMS) (opens in a new tab) |
| Industry payments | Open Payments (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 Karen H. Chao
Spotted something out of date? Email hello@dmand.ai and we will check the record. Contact details live in the free trial.
What is Karen H. Chao's NPI number?
Karen H. Chao's NPI number is 1013953108. It was assigned on June 20, 2006, and it is active in the NPI Registry.
What does Karen H. Chao specialize in?
Karen H. Chao is an optometrist in San Gabriel, California. The primary specialty in the NPI Registry is Optometrist (taxonomy code 152W00000X).
Where does Karen H. Chao practice?
Karen Chao practices at 121 S Del Mar Ave, San Gabriel, CA 91776-1345. Karen Chao's primary practice is San Gabriel Family Optometry in San Gabriel, California. Dmand AI also links Karen Chao to 1 group practice or clinic and 1 medical group.
What is Karen H. Chao's office phone number?
The practice phone on file for Karen Chao is (626) 287-0401.
What is Karen H. Chao's medical license number?
Karen Chao holds California license OPT 10301 TPA.
Does Karen H. Chao accept Medicare?
Yes. CMS lists Karen Chao as accepting Medicare assignment.
How many Medicare patients does Karen H. Chao see?
CMS counts 119 Medicare patients who saw Karen Chao in 2024, with an average age of 75.
Where did Karen H. Chao go to medical school?
Karen Chao graduated from Southern California College of Optometry in 1994.
Has Karen H. Chao received payments from drug or device companies?
CMS Open Payments shows $407 in general payments to Karen Chao from 2 companies from 2025 to 2025. The largest total came from Bausch & Lomb Americas Inc.
How long has Karen H. Chao been practicing?
Karen Chao graduated from medical school in 1994, 32 years ago.
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