Dr. David Anthony Ewing-Chow, MD
- Medicare services, 2022
- 230
- Part D claims, 2024
- 19
- Industry payments
- $2,121
- Affiliated sites
- 1
- State license
- 1
- Practice address
- 826 Washington St Suite 102 Suite 102, Watertown, NY 13601
- Practice phone
- Call (315) 788-0022
- Professional email
- Get professional email
- Personal email
- Get personal email
- Mobile number
- Get mobile number
Primary practice
Jefferson Eye Surgeons
Physician office · Watertown, New York
Find Dr. Ewing-Chow'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.
Dr. David Anthony Ewing-Chow is an ophthalmologist in Harbor City, California
Dr. Ewing-Chow practices at Jefferson Eye Surgeons in Watertown, New York.
Dr. Ewing-Chow's NPI, 1710043757, was assigned on December 27, 2006. Dr. Ewing-Chow graduated from University of Saskatchewan College of Medicine in 1987. Dr. Ewing-Chow holds New York license 221276.
- NPI
- 1710043757NPI Registry (opens in a new tab)
- NPI enumeration date
- December 27, 2006
- NPI status
- Active
- Practice phone
- (315) 788-0022
- Professional email
- Get email
- Personal email
- Get email
- Mobile number
- Get number
- Sex
- Male
- Estimated age
- 65
- Medical school graduation
- 1987
Sources: NPPES NPI Registry (CMS); Dmand AI Professional Profile Data; and Dmand AI Affiliation Data
Dr. David Anthony Ewing-Chow practices in Watertown and Harbor City
Dr. Ewing-Chow's primary practice is Jefferson Eye Surgeons, at 826 Washington St Suite 102 Suite 102, Watertown, NY 13601. The practice phone is (315) 788-0022. The NPI Registry lists Dr. Ewing-Chow's practice address as 1234 W Lomita Blvd, Harbor City, CA 90710.
- Jefferson Eye SurgeonsPrimary826 Washington St Suite 102 Suite 102, Watertown, NY 13601Phone(315) 788-0022
- NPI Registry address1234 W Lomita Blvd, Harbor City, CA 90710 · Los Angeles CountyPhone(315) 681-6379
Sources: NPPES NPI Registry (CMS); Dmand AI Affiliation Data; and Dmand AI Practice Data
Dr. David Anthony Ewing-Chow is affiliated with 1 site of care
Dr. Ewing-Chow's primary practice is Jefferson Eye Surgeons in Watertown, New York.
Source: Dmand AI Affiliation Data
Dmand AI tracks the EHR system at Dr. David Anthony Ewing-Chow's practice
Dmand AI tracks the electronic health record (EHR) system at each site where Dr. Ewing-Chow practices. Vendor and product names are available with a free account.
| Site | EHR vendor and product |
|---|---|
| Jefferson Eye Surgeons | Available with a free account |
Source: Dmand AI Technology Install Data
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Dr. David Anthony Ewing-Chow is one of 2,621 ophthalmologists in California
Ophthalmology is Dr. Ewing-Chow's primary specialty in the NPI Registry, under taxonomy code 207W00000X. Dr. Ewing-Chow is licensed in New York.
Specialties and state licenses
- Ophthalmology, New YorkPrimary
Ophthalmologists near Dr. Ewing-Chow
Counts of ophthalmologists 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
Dr. David Anthony Ewing-Chow billed Medicare for 230 services in 2022
CMS data shows 230 Medicare services from Dr. Ewing-Chow across 3 procedure codes in 2022. Medicare paid $11,628 for them. Every service was in an office.
Dr. Ewing-Chow's Medicare services by type, 2021 to 2022
- 2021
- 2022
- Tests and treatments
- 2021: 1,8552022: 23088%
- Imaging
- 2021: 142022: 0100%
Dr. Ewing-Chow compared with the California median for ophthalmologists, 2022
- Dr. Ewing-Chow
- California median
- Medicare services
- 230vs 1,07979% below
- Part D claims
- 1,038vs 61868% above
Medians across 2,568 ophthalmologists in California with Dmand AI profiles that report each measure.
Dr. Ewing-Chow's most billed Medicare procedure codes, 2022
CMS publishes codes billed for 11 or more Medicare patients. Each label is the code family; CPT descriptions are licensed by the AMA.
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Medicare shows one payer. Book a meeting to get commercial claims data for Dr. Ewing-Chow and other ophthalmologists in California.
Sources: Medicare Physician & Other Practitioners - by Provider and Service (CMS), 2024 data; and Dmand AI Peer Benchmarks
Dr. David Anthony Ewing-Chow's patients have a median age of 75
Across all payers, Dmand AI patient panel data puts Dr. Ewing-Chow's median patient age at 75, with 70% women.
Dr. Ewing-Chow's patients across all payers
Dmand AI patient panel data covers Medicare, Medicaid and commercial patients.
Patient panel by age, all payers
Median age 75
Patient panel by sex, all payers
- Women70%
- Men30%
Source: Dmand AI Patient Panel Data
Dr. David Anthony Ewing-Chow wrote 19 Medicare Part D claims in 2024
In 2024, Dr. Ewing-Chow wrote 19 Medicare Part D claims. 100% of them were for generic drugs. They cover 11 drugs, with $280,687 in total drug cost. In 2021, CMS named 2,024 claims across 23 drugs.
Dr. Ewing-Chow's most prescribed drugs by claims, 2022
CMS names a drug when it has 11 or more claims. Share is of the claims for drugs CMS names.
Part D claims for drugs CMS names, 2021 to 2022
- 2021
- 2022
- Claims for drugs CMS names
- 2021: 2,0242022: 1,03849%
Drugs named by CMS: 11 in 2022, 23 in 2021.
Sources: Medicare Part D Prescribers - by Provider and Drug (CMS), 2024 data, released May 6, 2026; and Medicare Part D Prescribers - by Provider (CMS), 2024 data
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Dr. David Anthony Ewing-Chow received $2,121 in industry payments from 2016 to 2023
CMS Open Payments shows 119 general payments to Dr. Ewing-Chow from 15 drug and device companies from 2016 to 2023. Food and beverage make up the largest share, 98% of the total. Alcon Laboratories Inc paid the most, $567.
General payments to Dr. Ewing-Chow by program year, 2016 to 2023
General payments to Dr. Ewing-Chow by kind, 2016 to 2023
- Food and beverage$2,08398%
- Education$382%
Companies that paid Dr. Ewing-Chow the most, 2016 to 2023
Share is of all general payments to this clinician.
Source: Open Payments (CMS), 2025 data, released July 7, 2026
Dr. David Anthony Ewing-Chow graduated from University of Saskatchewan College of Medicine
Dr. Ewing-Chow graduated from University of Saskatchewan College of Medicine in 1987.
- Medical school
Source: Dmand AI Professional Profile Data
Sources for Dr. David Anthony Ewing-Chow'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 Affiliation DataDmand AI Practice Data |
| Primary practice, affiliations and health system | Dmand AI Affiliation Data |
| Medicare services and procedure codes | Medicare Physician & Other Practitioners - by Provider and Service (CMS) (opens in a new tab) |
| State medians for the same specialty | Dmand AI Peer Benchmarks |
| Medicare patients and the all-payer patient panel | Dmand AI Patient Panel Data |
| Part D prescribing | Medicare Part D Prescribers - by Provider and Drug (CMS) (opens in a new tab)Medicare Part D Prescribers - by Provider (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 Dr. David Anthony Ewing-Chow
Spotted something out of date? Email hello@dmand.ai and we will check the record. Contact details live in the free trial.
What is Dr. David Anthony Ewing-Chow's NPI number?
Dr. David Anthony Ewing-Chow's NPI number is 1710043757. It was assigned on December 27, 2006, and it is active in the NPI Registry.
What kind of doctor is Dr. David Anthony Ewing-Chow?
Dr. David Anthony Ewing-Chow is an ophthalmologist in Harbor City, California. The primary specialty in the NPI Registry is Ophthalmology Physician (taxonomy code 207W00000X).
Where does Dr. David Anthony Ewing-Chow practice?
Dr. Ewing-Chow practices at 826 Washington St Suite 102 Suite 102, Watertown, NY 13601. Dr. Ewing-Chow also practices at 1234 W Lomita Blvd, Harbor City, CA 90710. Dr. Ewing-Chow's primary practice is Jefferson Eye Surgeons in Watertown, New York.
What is Dr. David Anthony Ewing-Chow's office phone number?
The practice phone on file for Dr. Ewing-Chow is (315) 788-0022.
What is Dr. David Anthony Ewing-Chow's medical license number?
Dr. Ewing-Chow holds New York license 221276.
Does Dr. David Anthony Ewing-Chow accept Medicare?
Yes. CMS data shows Dr. Ewing-Chow billed Medicare for 230 services in 2022.
What services does Dr. David Anthony Ewing-Chow bill to Medicare?
In 2022, Dr. Ewing-Chow's most billed Medicare services were eye exam or test (92012), eye exam or test (92014) and eye exam or test (92083).
Where did Dr. David Anthony Ewing-Chow go to medical school?
Dr. Ewing-Chow graduated from University of Saskatchewan College of Medicine in 1987.
What drugs does Dr. David Anthony Ewing-Chow prescribe most?
In 2022 Medicare Part D data, Dr. Ewing-Chow's most prescribed drugs by claims were Latanoprost, Lumigan and Timolol Maleate.
Has Dr. David Anthony Ewing-Chow received payments from drug or device companies?
CMS Open Payments shows $2,121 in general payments to Dr. Ewing-Chow from 15 companies from 2016 to 2023. The largest total came from Alcon Laboratories Inc.
How long has Dr. David Anthony Ewing-Chow been practicing?
Dr. Ewing-Chow graduated from medical school in 1987, 39 years ago.
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