Karissa H. Do, OD
- Medicare patients, 2024
- 24
- Industry payments
- $151
- Affiliated sites
- 1
- Medical group
- 1
- State license
- 1
- Practice address
- 18430 Brookhurst St Suite 100 Suite 100, Fountain Valley, CA 92708-6726
- Practice phone
- Call (714) 968-9121
- Professional email
- Get professional email
- Personal email
- Get personal email
- Mobile number
- Get mobile number
Primary practice
Tony D. Vu, O.d., INC
Eye care practice · Fountain Valley, California
Find Karissa Do'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.
Karissa H. Do is an optometrist in Fountain Valley, California
Karissa Do practices at Tony D. Vu, O.d., INC in Fountain Valley, California.
Karissa Do's NPI, 1598820433, was assigned on December 22, 2006. Karissa Do holds California license 11125T.
- NPI
- 1598820433NPI Registry (opens in a new tab)
- Medicare PAC ID
- 0244587764
- NPI enumeration date
- December 22, 2006
- NPI status
- Active
- Accepts Medicare assignment
- Yes
- Practice phone
- (714) 968-9121
- Professional email
- Get email
- Personal email
- Get email
- Mobile number
- Get number
- Sex
- Female
- Estimated age
- 53
- Medical school graduation
- 1999
Sources: NPPES NPI Registry (CMS); Dmand AI Professional Profile Data; Dmand AI Affiliation Data; and Doctors and Clinicians National Downloadable File (CMS)
Karissa H. Do practices at Tony D. Vu, O.d., INC in Fountain Valley, California
Karissa Do's primary practice is Tony D. Vu, O.d., INC, at 18430 Brookhurst St Suite 100 Suite 100, Fountain Valley, CA 92708-6726. The practice phone is (714) 968-9121.
- Tony D. Vu, O.d., INC18430 Brookhurst St Suite 100 Suite 100, Fountain Valley, CA 92708-6726Phone(714) 968-9121
Source: Dmand AI Affiliation Data
Karissa H. Do is affiliated with 1 site of care and 1 medical group
Karissa Do's primary practice is Tony D. Vu, O.d., INC in Fountain Valley, California. Dmand AI also links Karissa Do to 1 medical group, named with a free account.
Source: Dmand AI Affiliation Data
Dmand AI tracks the EHR system at Karissa H. Do's practice
Dmand AI tracks the electronic health record (EHR) system at each site where Karissa Do practices. Vendor and product names are available with a free account.
| Site | EHR vendor and product |
|---|---|
| Tony D. Vu, O.d., INC | Available with a free account |
| +1 medical group | Available with a free account |
Source: Dmand AI Technology Install Data
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Karissa H. Do is one of 7,206 optometrists in California
Optometrist is Karissa Do's primary specialty in the NPI Registry, under taxonomy code 152W00000X. Karissa Do is licensed in California.
Specialties and state licenses
- Optometrist, CaliforniaPrimary
Optometrists near Karissa Do
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
Karissa H. Do treated 24 Medicare patients in 2024, average age 75
CMS counts 24 Medicare patients who saw Karissa Do in 2024. The largest group is 75 to 84, with 11 patients. 75% of them have high cholesterol, and 58% have high blood pressure. Their average risk score is 0.80, where 1.00 is the Medicare average.
Across all payers, Dmand AI patient panel data puts Karissa Do's median patient age at 71, with 52% women.
Karissa Do's Medicare patients by age, 2024
CMS leaves out age groups with fewer than 11 patients.
Karissa Do's Medicare patients by sex, 2024
- Women1250%
- Men1250%
Chronic conditions among Karissa Do's Medicare patients, 2024
- High cholesterol75%
- High blood pressure58%
Share of Medicare patients with each condition. A patient can have several.
Karissa Do's patients across all payers
Dmand AI patient panel data covers Medicare, Medicaid and commercial patients.
Patient panel by age, all payers
Median age 71
Patient panel by sex, all payers
- Women52%
- Men48%
Sources: Dmand AI Patient Panel Data; and Medicare Physician & Other Practitioners - by Provider (CMS), 2024 data
How Karissa H. Do takes part in Medicare
Karissa Do 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)
Karissa H. Do received $151 in industry payments in 2025
CMS Open Payments shows 2 general payments to Karissa Do from 2 drug and device companies in 2025. Food and beverage make up the largest share, 100% of the total. CooperVision Inc. paid the most, $112.
Companies that paid Karissa Do the most, 2025 to 2025
Share is of all general payments to this clinician.
Source: Open Payments (CMS), 2025 data, released July 7, 2026
Sources for Karissa H. Do'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) |
| 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 Karissa H. Do
Spotted something out of date? Email hello@dmand.ai and we will check the record. Contact details live in the free trial.
What is Karissa H. Do's NPI number?
Karissa H. Do's NPI number is 1598820433. It was assigned on December 22, 2006, and it is active in the NPI Registry.
What does Karissa H. Do specialize in?
Karissa H. Do is an optometrist in Fountain Valley, California. The primary specialty in the NPI Registry is Optometrist (taxonomy code 152W00000X).
Where does Karissa H. Do practice?
Karissa Do practices at 18430 Brookhurst St Suite 100 Suite 100, Fountain Valley, CA 92708-6726. Karissa Do's primary practice is Tony D. Vu, O.d., INC in Fountain Valley, California. Dmand AI also links Karissa Do to 1 medical group.
What is Karissa H. Do's office phone number?
The practice phone on file for Karissa Do is (714) 968-9121.
What is Karissa H. Do's medical license number?
Karissa Do holds California license 11125T.
Does Karissa H. Do accept Medicare?
Yes. CMS lists Karissa Do as accepting Medicare assignment.
How many Medicare patients does Karissa H. Do see?
CMS counts 24 Medicare patients who saw Karissa Do in 2024, with an average age of 75.
Has Karissa H. Do received payments from drug or device companies?
CMS Open Payments shows $151 in general payments to Karissa Do from 2 companies from 2025 to 2025. The largest total came from CooperVision Inc.
How long has Karissa H. Do been practicing?
Karissa Do graduated from medical school in 1999, 27 years ago.
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