Cecily Elaine Hamill, MD, PHD
Ophthalmology Physician · Chelmsford, MA
Cecily Elaine Hamill, MD, PHD is an ophthalmology physician with a practice address in Chelmsford, Massachusetts, and NPI 1265676928, issued on Apr 25, 2009. Check the license (Massachusetts 251832, as entered in NPPES) on the Massachusetts Board of Registration in Medicine; the Medicare figures below come from public CMS files.
- Name
- Cecily Elaine Hamill
- Credential
- MD, PHD
- Primary taxonomy
- Ophthalmology Physician 207W00000X
- License number
- 251832 MA
Self-reported in NPPES; status is on the state search - Practice location
- 19 Village SQ, Chelmsford, MA 01824
- Phone
- (978) 256-5600
- Enumerated
- Apr 25, 2009
- Record last updated
- Jul 6, 2018 (not updated in 8 years: call before relying on the address or phone)
- Fax
- (978) 703-0250
- Medicaid ID
- 1L0093413A MA
- Medicare enrollment
- Enrolled (PECOS I20121002000050); accepts Medicare assignment
- Medical or professional school
- Emory University School Of Medicine, 2008
- Entity
- Type 1 · individual
8 nearest ophthalmology physician records → All 791 in Massachusetts → Look up another NPI →
Also registered at 19 Village SQ
A shared address usually means a shared clinic or building; it does not show who employs whom.
- Glen Bolliger, MDOphthalmology Physician1568455897
- Bruce Bunker, O.D.Optometrist1750386835
- Jennifer Calnan, ODPediatric Optometrist1508076027
- John Constantine, M.D.Ophthalmology Physician1437157765
- Melissa Donald, O.D.Optometrist1750674958
- Hannah Donovan, ODOptometrist1750066320
Verify Cecily Elaine Hamill in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersMassachusetts Board of Registration in Medicine
Search for license 251832Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
67% more Medicare Part D claims than the average ophthalmology physician in 2024
2,529 Medicare Part D claims for 602 beneficiaries, against an average of 1,518 among the 16,459 providers of this specialty who prescribed in Part D. Brand-name drugs were 33% of claims.
Most prescribed
- Latanoprost575 claims
- Prednisolone Acetate432 claims
- Ofloxacin331 claims
- Ketorolac Tromethamine310 claims
- Timolol Maleate167 claims
- Brimonidine Tartrate84 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.
Bills Medicare through one group practice
- Massachusetts Eye Associates PCChelmsford, MA
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
Cecily Elaine Hamill among 791 ophthalmology physician records in Massachusetts
Cecily Elaine Hamill, MD, PHD is one of 791 ophthalmology physician records with a practice address in Massachusetts. 76% of them appear in a Medicare file (Part D prescribing, MIPS, Open Payments or Medicare group billing); this one does. Its NPI, issued in 2009, is newer than 63% of them.
- NPI issued2009 · 63% of these records are older, 34% newer
- In a Medicare fileYes · 76% of these records are
- In the CMS Doctors and Clinicians fileYes · 65% of these records are
- Graduated2008 · median 2002 among the 518 with a school on file
- Record last updated2018 · 65% 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 Massachusetts practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
10 ophthalmology physician records list a practice address in Chelmsford
They are 10 of the 937 NPPES records with a practice address in Chelmsford, and 791 ophthalmology physician records in Massachusetts.
All 791 in Massachusetts → Every provider in Chelmsford → Ophthalmology Physician nationwide →
The 8 ophthalmology physician records with the nearest ZIP codes
- Glen Bolliger, MDChelmsford, MA 018241568455897
- John Constantine, M.D.Chelmsford, MA 018241437157765
- Murat Kalayoglu, M.D.Chelmsford, MA 018241588611982
- James Kim, M.D., PH.D.Chelmsford, MA 018241285808642
- Tatiana Perepelkina, MDChelmsford, MA 018241972162469
- David Perkins, MDChelmsford, MA 018241154313245
- Stephen Poor, MDChelmsford, MA 018241144209685
- David Tracy, MDChelmsford, MA 018241225020316
Common questions
What is Cecily Elaine Hamill, MD, PHD's NPI number?
Cecily Elaine Hamill, MD, PHD's National Provider Identifier (NPI) is 1265676928, issued on Apr 25, 2009. An NPI identifies a provider in billing; it is not a license.
Where is Cecily Elaine Hamill, MD, PHD located?
The NPPES record lists a practice address at 19 Village SQ, Chelmsford, MA, 01824. Phone: (978) 256-5600. Providers update this record themselves, so call before visiting.
How can I verify Cecily Elaine Hamill, MD, PHD's license?
NPPES lists Massachusetts license number 251832, as entered by the provider. Search the Massachusetts Board of Registration in Medicine at https://findmydoctor.mass.gov/. The NPPES record confirms identity only; the state search shows license status, expiration and public orders.
How much does Cecily Elaine Hamill, MD, PHD prescribe under Medicare Part D?
In 2024, Cecily Elaine Hamill, MD, PHD had 2,529 Medicare Part D claims for 602 beneficiaries; 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.