David Anthony Ewing-Chow, M.D.
Ophthalmology Physician · Watertown, NY
David Anthony Ewing-Chow, M.D. is an ophthalmology physician with a practice address in Watertown, New York, and NPI 1710043757, issued on Dec 27, 2006. Check the license (New York 221276, as entered in NPPES) on the NYS Education Department, Office of the Professions; the Medicare figures below come from public CMS files.
- Name
- David Anthony Ewing-Chow
- Credential
- M.D.
- Primary taxonomy
- Ophthalmology Physician 207W00000X
- License number
- 221276 NY
Self-reported in NPPES; status is on the state search - Practice location
- 826 Washington St, Watertown, NY 13601
- Phone
- (315) 681-6379
- Enumerated
- Dec 27, 2006
- Record last updated
- Feb 24, 2017 (not updated in 9 years: call before relying on the address or phone)
- Fax
- (315) 681-6823
- Entity
- Type 1 · individual
8 nearest ophthalmology physician records → All 1,822 in New York → Look up another NPI →
Also registered at 826 Washington St
A shared address usually means a shared clinic or building; it does not show who employs whom.
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Verify David Anthony Ewing-Chow in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersNYS Education Department, Office of the Professions
Search for license 221276Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
99% fewer Medicare Part D claims than the average ophthalmology physician in 2024
19 Medicare Part D claims, against an average of 1,518 among the 16,459 providers of this specialty who prescribed in Part D. Brand-name drugs were 0% of claims.
Source: CMS Medicare Part D Prescribers by Provider and Drug, 2024 (data.cms.gov). Part D covers prescriptions for Medicare patients only; drugs with fewer than 11 claims are not published.
David Anthony Ewing-Chow among 1,822 ophthalmology physician records in New York
David Anthony Ewing-Chow, M.D. is one of 1,822 ophthalmology physician records with a practice address in New York. 79% of them appear in a Medicare file (Part D prescribing, MIPS, Open Payments or Medicare group billing); this one does. Its NPI, issued in 2006, is newer than 16% of them.
- NPI issued2006 · 16% of these records are older, 34% newer
- In a Medicare fileYes · 79% of these records are
- In the CMS Doctors and Clinicians fileNo · 67% of these records are
- Record last updated2017 · 71% of these records were not updated in five years or more
Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 207W00000X and a New York practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
Ophthalmology Physician providers in New York
There are 1,822 ophthalmology physician records in New York.
All 1,822 in New York → Every provider in Watertown → Ophthalmology Physician nationwide →
The 8 ophthalmology physician records with the nearest ZIP codes
- William Crane, D.O., F.A.C.S.Watertown, NY 136011558380964
- Debra Koloms, MDWatertown, NY 136011770533515
- Noaman Sanni, MDWatertown, NY 136011982654901
- Denys Beauvais, MDOgdensburg, NY 136691083787972
- John Jacobson, MDOgdensburg, NY 136691770565137
- Monica Nuyens, MDOgdensburg, NY 136691770656670
- Bradley Ashcroft, MDPotsdam, NY 136761184205486
- Gary Torbey, DOPotsdam, NY 136761487657888
Common questions
What is David Anthony Ewing-Chow, M.D.'s NPI number?
David Anthony Ewing-Chow, M.D.'s National Provider Identifier (NPI) is 1710043757, issued on Dec 27, 2006. An NPI identifies a provider in billing; it is not a license.
Where is David Anthony Ewing-Chow, M.D. located?
The NPPES record lists a practice address at 826 Washington St, Watertown, NY, 13601. Phone: (315) 681-6379. Providers update this record themselves, so call before visiting.
How can I verify David Anthony Ewing-Chow, M.D.'s license?
NPPES lists New York license number 221276, as entered by the provider. Search the NYS Education Department, Office of the Professions at https://www.op.nysed.gov/services/verifications/online-verification-searches. The NPPES record confirms identity only; the state search shows license status, expiration and public orders.
How much does David Anthony Ewing-Chow, M.D. prescribe under Medicare Part D?
In 2024, David Anthony Ewing-Chow, M.D. had 19 Medicare Part D claims; the average among ophthalmology physician prescribers was 1,518. Part D covers Medicare prescriptions only.
Source: CMS National Plan and Provider Enumeration System (NPPES), file of Aug 9, 2026 (NPPES files on CMS.gov); NUCC Health Care Provider Taxonomy. Medicare files from data.cms.gov. An NPI identifies who bills; it is not a license.
Figures on PlainDoctor are read from the federal files each page names (CMS NPPES, Medicare Part D, MIPS, Open Payments; the HHS-OIG exclusion list only as counts) and from Census population estimates, with the file date shown beside them. See our editorial standards & corrections policy, the methodology behind these numbers, or report a data error. Data current as of Aug 9, 2026.