Eric D. Gaier, MD. PHD
Ophthalmology Physician · Boston, MA
Eric D. Gaier, MD. PHD is an ophthalmology physician with a practice address in Boston, Massachusetts, and NPI 1134568199, issued on Jun 22, 2013. Check the license (Massachusetts 271035, as entered in NPPES) on the Massachusetts Board of Registration in Medicine; the Medicare figures below come from public CMS files.
- Name
- Eric D. Gaier
- Credential
- MD. PHD
- Primary taxonomy
- Ophthalmology Physician 207W00000X
- License number
- 271035 MA
Self-reported in NPPES; status is on the state search - Practice location
- 300 Longwood Ave, Boston, MA 02115
- Phone
- (617) 355-6401
- Enumerated
- Jun 22, 2013
- Record last updated
- Apr 24, 2020 (not updated in 6 years: call before relying on the address or phone)
- Medicare enrollment
- Enrolled (PECOS I20170803003157); may accept Medicare assignment
- Medical or professional school
- University Of Connecticut School Of Medicine, 2013
- Entity
- Type 1 · individual
8 nearest ophthalmology physician records → All 791 in Massachusetts → Look up another NPI →
Also registered at 300 Longwood Ave
A shared address usually means a shared clinic or building; it does not show who employs whom.
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Verify Eric D. Gaier in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersMassachusetts Board of Registration in Medicine
Search for license 271035Check 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
12 Medicare Part D claims, against an average of 1,518 among the 16,459 providers of this specialty who prescribed in Part D.
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.
Industry payments in 2024: $1,294.24
4 payments; by number, the most common kind was travel and lodging; the largest payer was Alcon Vision LLC. The 13,221 providers of this specialty with any payment received $4,535.02 on average. Payments are reported by manufacturers, not by the provider, and are not a sign of wrongdoing.
Source: CMS Open Payments, program year 2024 (openpaymentsdata.cms.gov); average among providers of this specialty with at least one payment.
Bills Medicare through one group practice
- Childrens Hospital Ophthalmology Foundation IncBoston, MA
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
Eric D. Gaier among 791 ophthalmology physician records in Massachusetts
Eric D. Gaier, 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 2013, is newer than 72% of them.
- NPI issued2013 · 72% of these records are older, 25% newer
- In a Medicare fileYes · 76% of these records are
- In the CMS Doctors and Clinicians fileYes · 65% of these records are
- Graduated2013 · median 2002 among the 518 with a school on file
- Record last updated2020 · 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).
Ophthalmology Physician providers in Massachusetts
There are 791 ophthalmology physician records in Massachusetts.
All 791 in Massachusetts → Every provider in Boston → Ophthalmology Physician nationwide →
The 8 ophthalmology physician records with the nearest ZIP codes
- Vicki Chen, M.D.Boston, MA 021151689695363
- Leo Chylack, M.D.Boston, MA 021151619030707
- Linda Dagi, MDBoston, MA 021151376631432
- Alexandra Elliott, MDBoston, MA 021151407962905
- Anne Fulton, MDBoston, MA 021151194815191
- Gena Heidary, MDBoston, MA 021151972651206
- David Hunter, MD, PHDBoston, MA 021151659461663
- Brendan McCarthy, M.D.Boston, MA 021151033177969
Common questions
What is Eric D. Gaier, MD. PHD's NPI number?
Eric D. Gaier, MD. PHD's National Provider Identifier (NPI) is 1134568199, issued on Jun 22, 2013. An NPI identifies a provider in billing; it is not a license.
Where is Eric D. Gaier, MD. PHD located?
The NPPES record lists a practice address at 300 Longwood Ave, Boston, MA, 02115. Phone: (617) 355-6401. Providers update this record themselves, so call before visiting.
How can I verify Eric D. Gaier, MD. PHD's license?
NPPES lists Massachusetts license number 271035, 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 Eric D. Gaier, MD. PHD prescribe under Medicare Part D?
In 2024, Eric D. Gaier, MD. PHD had 12 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.