Ellen Ong
- Part D claims, 2024
- 30
- Industry payments
- $165
- Affiliated sites
- 1
- Medical group
- 1
- State license
- 1
- Practice address
- 40910 Fremont Blvd, Fremont, CA 94538
- Practice phone
- Call (510) 770-8040
- Professional email
- Get professional email
- Personal email
- Get personal email
- Mobile number
- Get mobile number
Primary practice
Bay Area Community Health - Hope Project
Fremont, California
Find Ellen Ong'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.
Ellen Ong is an optometrist in Fremont, California
Ellen Ong practices at Bay Area Community Health - Hope Project in Fremont, California.
Ellen Ong's NPI, 1639737166, was assigned on May 30, 2019. Ellen Ong holds California license 34486TLG.
- NPI
- 1639737166NPI Registry (opens in a new tab)
- Medicare PAC ID
- 4183957848
- NPI enumeration date
- May 30, 2019
- NPI status
- Active
- Accepts Medicare assignment
- Yes
- Practice phone
- (510) 770-8040
- Professional email
- Get email
- Personal email
- Get email
- Mobile number
- Get number
- Sex
- Female
- Estimated age
- 33
- Medical school graduation
- 2019
Sources: NPPES NPI Registry (CMS); Dmand AI Professional Profile Data; Dmand AI Practice Data; and Doctors and Clinicians National Downloadable File (CMS)
Ellen Ong practices at Bay Area Community Health - Hope Project in Fremont, California
Ellen Ong's primary practice is Bay Area Community Health - Hope Project, at 40910 Fremont Blvd, Fremont, CA 94538 in Alameda County. The practice phone is (510) 770-8040.
- Bay Area Community Health - Hope Project40910 Fremont Blvd, Fremont, CA 94538 · Alameda CountyPhone(510) 770-8040
Sources: NPPES NPI Registry (CMS); and Dmand AI Practice Data
Ellen Ong is affiliated with 2 sites of care and 1 medical group
Ellen Ong's primary practice is Bay Area Community Health - Hope Project in Fremont, California. The medical group on file is Bay Area Community Health. Dmand AI also links Ellen Ong to 1 more group practice or clinic, 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 Ellen Ong's practice
Dmand AI tracks the electronic health record (EHR) system at each site where Ellen Ong practices. Vendor and product names are available with a free account.
| Site | EHR vendor and product |
|---|---|
| Bay Area Community Health - Hope Project | Available with a free account |
| +1 more affiliated site | Available with a free account |
Source: Dmand AI Technology Install Data
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Ellen Ong is one of 7,206 optometrists in California
Optometrist is Ellen Ong's primary specialty in the NPI Registry, under taxonomy code 152W00000X. Ellen Ong is licensed in California.
Specialties and state licenses
- Optometrist, CaliforniaPrimary
Optometrists near Ellen Ong
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
Ellen Ong's patients have a median age of 62
Across all payers, Dmand AI patient panel data puts Ellen Ong's median patient age at 62, with 49% women.
Ellen Ong's patients across all payers
Dmand AI patient panel data covers Medicare, Medicaid and commercial patients.
Patient panel by age, all payers
Median age 62
Patient panel by sex, all payers
- Women49%
- Men51%
Source: Dmand AI Patient Panel Data
Ellen Ong wrote 30 Medicare Part D claims in 2024
In 2024, Ellen Ong wrote 30 Medicare Part D claims for 14 patients. 57% of them were for generic drugs.
Ellen Ong's Part D claims by kind of drug, 2024
- Generic17 claims57%
- Brand-name13 claims43%
Source: Medicare Part D Prescribers - by Provider (CMS), 2024 data
How Ellen Ong takes part in Medicare
Ellen Ong 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)
For MedTech and pharma teams
Filter 7.4M+ HCPs by Medicare procedures, Part D drugs and Open Payments history, then reach them with verified contacts in one login.
Ellen Ong received $165 in industry payments in 2025
CMS Open Payments shows 2 general payments to Ellen Ong from 1 drug or device company in 2025. Food and beverage make up the largest share, 100% of the total. Johnson & Johnson Vision Care, Inc. paid the most, $165.
Companies that paid Ellen Ong 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 Ellen Ong'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 Data |
| 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) |
| 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 Ellen Ong
Spotted something out of date? Email hello@dmand.ai and we will check the record. Contact details live in the free trial.
What is Ellen Ong's NPI number?
Ellen Ong's NPI number is 1639737166. It was assigned on May 30, 2019, and it is active in the NPI Registry.
What does Ellen Ong specialize in?
Ellen Ong is an optometrist in Fremont, California. The primary specialty in the NPI Registry is Optometrist (taxonomy code 152W00000X).
Where does Ellen Ong practice?
Ellen Ong practices at 40910 Fremont Blvd, Fremont, CA 94538. Ellen Ong's primary practice is Bay Area Community Health - Hope Project in Fremont, California. Dmand AI also links Ellen Ong to 1 group practice or clinic.
What is Ellen Ong's office phone number?
The practice phone on file for Ellen Ong is (510) 770-8040.
What is Ellen Ong's medical license number?
Ellen Ong holds California license 34486TLG.
What medical group is Ellen Ong part of?
Ellen Ong is linked to Bay Area Community Health.
Does Ellen Ong accept Medicare?
Yes. CMS lists Ellen Ong as accepting Medicare assignment.
Has Ellen Ong received payments from drug or device companies?
CMS Open Payments shows $165 in general payments to Ellen Ong from 1 company from 2025 to 2025. The largest total came from Johnson & Johnson Vision Care, Inc.
How long has Ellen Ong been practicing?
Ellen Ong graduated from medical school in 2019, 7 years ago.
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