NPI registry status
Active
2026 NPPES data Neuro-ophthalmology Physician NPI 1134568199 MD. PHD
Verify on CMS → Eric Gaier, MD. PHD
Neuro-ophthalmology Physician in Boston, Massachusetts.
This profile is drawn from the federal National Provider Identifier Registry (CMS NPPES), which lists more than 7 million U.S. healthcare providers - including 139 in Neuro-ophthalmology Physician, and covers specialty classification, practice address, and Medicare Part D prescribing data when reported. According to CMS, every field reflects the provider's official federal registration, see our methodology.
Federal data, no proprietary rating.
We show these CMS records as-is - no composite score, no star rating, no editorial opinion layered on top.
Prescribing volume
12
Medicare Part D claims · Neuro-ophthalmology Physician avg: 487
Industry payments
$1.3K
4 payments · CMS Open Payments (Sunshine Act)
What the federal data shows
Eric Gaier, MD. PHD filed 12 Medicare Part D claims in 2024 as a Neuro-ophthalmology Physician in Boston, Massachusetts.
- 12
- Part D claims, 2024
- Likely
- board-certified (heuristic)
- ≥0th
- pct by Part D claim volume (lower-bound band)
Every figure on this page comes straight from federal CMS records (NPPES, Medicare Part D, MIPS, Open Payments) - no proprietary rating or editorial opinion is applied.
Federal trust snapshot
What official records show about Eric Gaier, MD. PHD
Federal records show an active NPI with Medicare Part D prescribing activity — verifiable registry data, not a proprietary rating.
- Verified
NPI registry status
Active listing in the CMS National Provider Identifier Registry (NPI 1134568199), first enumerated 06/22/2013.
Source: CMS NPPES
- Reported
Medicare Part D participation
Filed 12 Medicare Part D prescription claims in the 2023 CMS public use file — indicates active Medicare prescribing participation.
Source: CMS Part D Prescriber PUF
- Reported
Board certification signal
Heuristic suggests board-certified status based on ABMS-eligible specialty taxonomy plus active CMS participation signals — not a direct ABMS verification.
- Reported
Hospital affiliations
1 CMS Care Compare hospital affiliation on record — practice footprint from the Doctors and Clinicians file.
Source: CMS Care Compare
- Reported
Industry payment transparency
$1.3K in reported industry payments (4 transfers) in 2024 under the federal Sunshine Act — disclosed transfers of value, not a quality rating.
Source: CMS Open Payments
- State context
State board disciplinary context
Massachusetts statewide board action statistics are published annually — these figures describe aggregate state activity, not Eric Gaier, MD. PHD's individual license status. Verify directly with the state medical board.
Source: BORIM annual report 2023
- Not in federal data
Individual sanction lookup
PlainDoctor does not publish per-provider disciplinary determinations. Confirm current license and any individual actions through the state medical board or FSMB verification service.
Source: State medical board / FSMB
This trust snapshot summarizes only what appears in federal CMS/NPPES public records. It is not a composite score, star rating, patient review, or clinical recommendation. PlainDoctor never fabricates reviews or AggregateRating schema.
CMS NPPES provider registry desk
NPI 1134568199 · Neuro-ophthalmology Physician
NPI-10 · ENUM-MID · TAX-TRACE · RX-TRACE · BOOK-THIN · PHOTO-ENUM
- NPI-10 1134568199
- ENUM-MID 2013
- TAX-TRACE 139
- RX-TRACE 12
- BOOK-THIN 4 in Massachusetts
- PHOTO-ENUM Yin Liu, M.D., PH.D. · 2013
Eric Gaier, MD. PHD's Medicare Part D volume vs every U.S. prescriber
Total Medicare Part D claims, 2024, across all CMS prescribers nationally
12 ≥ 0th percentile 0% of 1,416,883 prescribers are in lower value bands
Each bar is a band; taller bars hold more prescribers. The dashed line + filled bar mark this entry. Hover or tap any bar for its full count, share, and where it sits relative to this entry.
The percentile is a conservative 100-claim band: it counts only prescribers in lower claim-volume bands. Medicare Part D claim volume is activity context, not a quality measure or recommendation. See methodology § corpus placement.
Source CMS Medicare Part D Prescriber Public Use File · 2024
✓
Board certification likely (heuristic, not verified)
Eric Gaier, MD. PHD practices in an ABMS-board-eligible specialty and shows active CMS Medicare participation + 1 hospital affiliation - signals consistent with board-certified status. For verified board certification, see CertificationMatters.org (the official ABMS public lookup).
What does the federal data show about Eric Gaier, MD. PHD?
Quality data not reportedPrimary specialty
Neuro-ophthalmology Physician
Medicare Part D claims
12 98% vs specialty avg
Specialty distribution in Massachusetts
How Neuro-ophthalmology Physician compares to other specialties among Massachusetts providers
Board certification
Not published by CMS
CMS does not publish a per-provider board-certification field in NPPES. PlainDoctor does not have a reliable per-specialty certification rate to show for Neuro-ophthalmology Physician. Verify directly:
How MIPS and board certification work
The Merit-based Incentive Payment System (MIPS) scores providers 0–100 across four performance categories: Quality, Cost, Promoting Interoperability, and Improvement Activities, weighted under 42 CFR §414.1380. Reporting is voluntary for many small practices, so absence of a MIPS score is not a quality signal.
Board certification through an ABMS or AOA member board signals voluntary post-licensure examination plus continuous Maintenance of Certification cycles. Verify any individual provider's status through certificationmatters.org (ABMS) or osteopathic.org (AOA).
Practice Address
Provider Details
| NPI | 1134568199 |
|---|---|
| Specialty | Neuro-ophthalmology Physician |
| Credentials | MD. PHD |
| Gender | Male |
| NPI Issued | 06/22/2013 |
Hospital and facility affiliations
Facilities where Eric Gaier, MD. PHD bills Medicare from. Star ratings (1-5) are CMS Hospital Compare's "Hospital overall rating" - a composite of mortality, readmission, patient experience, safety, timely care, and efficient use of medical imaging measures. Source: CMS Care Compare.
Childrens Hospital Ophthalmology Foundation Inc
Boston, MA
Affiliations sourced from CMS Doctors and Clinicians National Downloadable File; hospital ratings from CMS Hospital General Information dataset (cross-referenced by facility name + state).
Industry payments received (2024) - CMS Open Payments transparency data
The federal Physician Payments Sunshine Act (part of the Affordable Care Act) requires drug and medical-device manufacturers + group purchasing organizations to publicly report payments and other transfers of value to physicians and teaching hospitals. The data below covers 2024 for Eric Gaier, MD. PHD. Source: openpaymentsdata.cms.gov.
Total received
$1.3K
Largest payer
Alcon Vision LLC
Most common payment type
Travel and Lodging
Industry payments are not necessarily indicators of bias, they include research funding, consulting fees for evidence-based work, royalties for inventions, food at conferences, and similar items. The disclosure exists for transparency. Read our methodology for how we interpret this data.
License & disciplinary context - Massachusetts BORIM 2023 annual report
Aggregate state board data only, NOT a determination of any individual provider's status. The figures below describe statewide disciplinary activity across all ~38K Massachusetts medical licensees in 2023 - they are NOT specific to Eric Gaier, MD. PHD. To verify Eric Gaier, MD. PHD's current license status, search the BORIM public license lookup directly, or check the Federation of State Medical Boards (FSMB) verification service.
80
Total board actions, Massachusetts 2023
Across 78 cases
2.11
Actions per 1,000 licensees
Massachusetts statewide rate
probation
Most common action type
29 cases
BORIM publishes annual disciplinary statistics as part of public-record reporting under each state's Administrative Procedure Act. See the full breakdown by action type and year on the Massachusetts disciplinary trends page. Cross-checked against FSMB U.S. Medical Regulatory Trends.
Medicare Part D Prescribing Data
CMS Medicare Part D prescriber-level data for calendar year 2024.
12
Total Claims
$116
Total Drug Cost
N/A
Medicare Beneficiaries
Prescribing Breakdown
- 30-Day Fills
- 15.5
- Total Day Supply
- 318
Patient Demographics
- Average Patient Age
- 69.0 years
- Avg HCC Risk Score
- 1.03
Neuro-ophthalmology Physician Overview
How Eric Gaier, MD. PHD fits within the Neuro-ophthalmology Physician landscape nationally.
139
Neuro-ophthalmology Physician Providers in US
33
States with Neuro-ophthalmology Physician
487
Avg Claims per Provider
Eric Gaier, MD. PHD's 12 claims are below the specialty average of 487.
Nationwide Neuro-ophthalmology Physician peers with similar MIPS or enrollment year
Two federal-record peer sets for Gaier, both outside Massachusetts so the neighborhoods are not geographic containment.
Same NPPES enumeration year (2013)
Same-specialty clinicians who entered the NPI registry in the same calendar year, outside this state.
Nearby Neuro-ophthalmology Physician Providers in Massachusetts
Other clinicians with the same primary specialty enrolled in Massachusetts, drawn from the same CMS NPPES roster as Gaier.
One of 4 Neuro-ophthalmology Physician providers enrolled in Massachusetts, 3 are shown here.
Dr. Lauren Colwell
MD
Taunton, MA
Dr. Scott Forman
MD
Belchertown, MA
Dr. Crandall Peeler
M.D.
Taunton, MA
Compare Neuro-ophthalmology Physician nationally: see state-by-state distribution →
Frequently Asked Questions
What is Eric Gaier, MD. PHD's specialty? ▼
Eric Gaier, MD. PHD specializes in Neuro-ophthalmology Physician and practices in Boston, Massachusetts. Credentials: MD. PHD.
How much does Eric Gaier, MD. PHD prescribe under Medicare Part D? ▼
In 2024, Eric Gaier, MD. PHD wrote 12 Medicare Part D claims totaling $116 in drug costs for N/A beneficiaries.
Where is Eric Gaier, MD. PHD located? ▼
Eric Gaier, MD. PHD is located at 300 LONGWOOD AVE, Boston, MA, 02115. Phone: (617) 355-6401.
What is Eric Gaier, MD. PHD's NPI number? ▼
Eric Gaier, MD. PHD's National Provider Identifier (NPI) is 1134568199, issued on 06/22/2013.
How many Neuro-ophthalmology Physician providers are there in the US? ▼
There are 139 Neuro-ophthalmology Physician providers across 33 states in the US. The average Neuro-ophthalmology Physician provider writes 487 Medicare Part D claims per year.
Does Eric Gaier, MD. PHD accept Medicare? ▼
Eric Gaier, MD. PHD appears in CMS Medicare data with 12 Part D claims and N/A Medicare beneficiaries in 2024. Contact the provider's office directly to confirm current Medicare enrollment and accepted plans.
How can I verify Eric Gaier, MD. PHD's credentials? ▼
Eric Gaier, MD. PHD's NPI is 1134568199 with credentials MD. PHD. You can verify this through the NPPES NPI Registry, check state medical board records, and confirm board certification through the ABMS or AOA.
Data Sources
View source datasets and methodology notes
- Provider Directory
- CMS National Plan and Provider Enumeration System (NPPES), download.cms.gov/nppes, updated monthly. Contains NPI, specialty, credentials, and practice location.
- Specialty Classification
- NUCC Health Care Provider Taxonomy (nucc.org), the industry standard for classifying provider specialties in Medicare and Medicaid billing.
- Prescribing Data
- CMS Medicare Part D Prescriber Public Use File (2024). Includes claims, drug costs, beneficiaries, and opioid prescribing rates.
- Limitations
- Provider data is self-reported to CMS. Prescribing data reflects Medicare Part D only and does not include commercial insurance, Medicaid, or cash prescriptions. Claims below 11 beneficiaries are suppressed by CMS for privacy.
See our complete data methodology for details on how we collect and process government data.
Data as of August 2026 (NPPES) / 2024 (Medicare Part D). Source: Centers for Medicare & Medicaid Services (CMS).
Disclaimer: Data from CMS NPPES and Medicare Part D. PlainDoctor does not rate or rank providers. Provider information is self-reported and may not be current. Always verify information directly with the provider. About · Methodology
Every figure on PlainDoctor is rendered directly from the federal CMS NPPES registry, Medicare Part D, MIPS, and Open Payments records, no number is typed in by an editor. See our editorial standards & corrections policy, the methodology behind these numbers, or report a data error. Data current as of August 2026.