Neill S. Cowles, O.D.
Optometrist · Chatham, MA
Neill S. Cowles, O.D. is an optometrist with a practice address in Chatham, Massachusetts, and NPI 1033124607, issued on Jul 30, 2006. Check the license (Massachusetts 2185, as entered in NPPES) with the Massachusetts board that licenses this profession; the Medicare figures below come from public CMS files.
- Name
- Neill S. Cowles
- Credential
- O.D.
- Primary taxonomy
- Optometrist 152W00000X
- License number
- 2185 MA
Self-reported in NPPES; status is on the state search - Practice location
- 259 Crowell RD, Chatham, MA 02633
- Phone
- (508) 945-2552
- Enumerated
- Jul 30, 2006
- Record last updated
- Nov 2, 2007 (not updated in 19 years: call before relying on the address or phone)
- Fax
- (508) 945-0533
- Medicaid ID
- 0303704 MA
- Medicare enrollment
- Enrolled (PECOS I20070925000242); accepts Medicare assignment
- Medical or professional school
- New England College Of Optometry, 1967
- Entity
- Type 1 · individual
Verify Neill S. Cowles in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersWhich Massachusetts board licenses this profession
Search for license 2185Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
75% fewer Medicare Part D claims than the average optometrist in 2024
70 Medicare Part D claims for 50 beneficiaries, against an average of 277 among the 33,128 providers of this specialty who prescribed in Part D. Brand-name drugs were 67% of claims.
Most prescribed
- Neomycin-Polymyxin-Dexameth44 claims
- Cequa14 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.
1 optometrist records list a practice address in Chatham
They are 1 of the 42 NPPES records with a practice address in Chatham, and 1,501 optometrist records in Massachusetts.
Other optometrist records in Massachusetts
- Maysa Abbas, ODMalden, MA1588247787
- Kelly Abbott, O.D.Cambridge, MA1316313208
- Angela Abraham, O.D.Amherst, MA1609833870
- Joel Abraham, O.D.Leominster, MA1326187576
- Chukwuemeka Achonu, ODBoston, MA1013738582
- Thedalisa AckepLeominster, MA1003748104
- Amie Adams, O.D.Hudson, MA1831137322
- John Adams, ODIpswich, MA1598727778
- Stephen Adelstein, ODChelmsford, MA1790770980
- Molly Admire, ODBoston, MA1528628625
Common questions
What is Neill S. Cowles, O.D.'s NPI number?
Neill S. Cowles, O.D.'s National Provider Identifier (NPI) is 1033124607, issued on Jul 30, 2006. An NPI identifies a provider in billing; it is not a license.
Where is Neill S. Cowles, O.D. located?
The NPPES record lists a practice address at 259 Crowell RD, Chatham, MA, 02633. Phone: (508) 945-2552. Providers update this record themselves, so call before visiting.
How can I verify Neill S. Cowles, O.D.'s license?
NPPES lists Massachusetts license number 2185, as entered by the provider. Search the Massachusetts board that licenses this profession; the NPPES record confirms identity only.
How much does Neill S. Cowles, O.D. prescribe under Medicare Part D?
In 2024, Neill S. Cowles, O.D. had 70 Medicare Part D claims for 50 beneficiaries; the average among optometrist prescribers was 277. 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.