ERIC D GAIER MD. PHD
NPI 1134568199
Ophthalmology in Boston, MA

Q: What is Eric Gaier's NPI number?

The NPI number for Eric Gaier is 1134568199. It was assigned to this individual provider in the NPPES registry on June 22, 2013.

Q: What is Eric Gaier's specialty?

The primary specialty registered for this NPI is Ophthalmology with taxonomy code 207W00000X.

Q: When was this NPI record last updated?

The NPPES record for Eric Gaier was last updated on April 24, 2020. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 6 years ago. If this record has changed at CMS more recently, you can request an on-demand re-check against the live CMS registry, directly from this page.

Active since June 22, 2013PECOS Enrolled

300 LONGWOOD AVE, BOSTON, MA 02115(617) 355-6401 Get Directions Write a Review

NPPES record last updated: April 24, 2020. Verified against the NPPES registry weekly; last sync: October 25, 2026.

Record update history: Apr 24, 2020, Jul 11, 2017 (2 updates tracked since 2017).

On this page

About Eric D Gaier Md. Phd NPPES

Official registry information on file with the National Plan and Provider Enumeration System.

ERIC D GAIER MD. PHD (NPI 1134568199) is an individual ophthalmology provider in Boston, Massachusetts, licensed in Massachusetts (271035) and active in the NPI registry since June 2013. He is enrolled in Medicare PECOS, is affiliated with Massachusetts Eye And Ear Infirmary -, and is a graduate of University Of Connecticut School Of Medicine (2013).

NPPES Registry Identity

NPI1134568199

Entity TypeIndividualMale

Primary Taxonomy207W00000X

Provider Legal NameERIC D GAIERCredential: MD. PHD

Location Address300 LONGWOOD AVEBoston, MA 02115-5724

Mailing Address300 Longwood AveBoston, MA 02115-5724 · (617) 355-6401

Phone(617) 355-6401

Sole ProprietorNo

Medical School CMSUniversity Of Connecticut School Of MedicineGraduated 2013

Enumeration DateJune 22, 2013

Last NPPES UpdateApril 24, 20202 updates tracked since enumeration

NPPES CertifiedApril 24, 2020

✔ NPI 1134568199 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses 3

★ Primary SpecialtyOphthalmologyAllopathic & Osteopathic Physicians

Taxonomy Code207W00000X

License✔ Licensed in MA · 271035

Definition

An ophthalmologist has the knowledge and professional skills needed to provide comprehensive eye and vision care. Ophthalmologists are medically trained to diagnose, monitor and medically or surgically treat all ocular and visual disorders. This includes problems affecting the eye and its component structures, the eyelids, the orbit and the visual pathways. In so doing, an ophthalmologist prescribes vision services, including glasses and contact lenses.

Also ListedOphthalmology · Neuro-ophthalmologyTaxonomy 207WX0109X · License 271035 (MA)

Also ListedOphthalmology · Pediatric Ophthalmology and Strabismus SpecialistTaxonomy 207WX0110X · License 271035 (MA)

300 LONGWOOD AVE, Boston, MA 02115

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Accepted Insurance

The full list of accepted plans is on the Insurance tab. Issuers include Anthem Blue Cross and Blue Shield, Taro Health.Insurance ›

Medicare Participation & PECOS CMS

Medicare enrollment, assignment, billing reassignment, and ordering and referring status from CMS.

Medicare Enrollment Status

✔

Enrolled in Medicare (PECOS)

Eric D Gaier Md. Phd is registered in the CMS Provider Enrollment, Chain and Ownership System (PECOS).

PECOS PAC ID3274757109

PECOS Enrollment IDI20170803003157

Eligible to Order & Refer✔ Part B Labs & Imaging✔ Durable Medical Equipment✔ Home Health Agency✔ Power Mobility DevicesPer the CMS Ordering and Referring file. Eligibility means Medicare pays claims that this provider orders or refers for these categories.

Medicare Billing Reassignment

Medicare enrollment records show Eric Gaier reassigns Medicare billing to 1 organization. The organization bills Medicare for the services this provider delivers there.

Childrens Hospital Ophthalmology Foundation Inc

Same address

Ophthalmology

300 LONGWOOD AVENUE, FEGAN 4
Boston, MA 02115

Reassigned Medicare billing, Massachusetts enrollment
71 clinicians in this Medicare group

NPI 1770679045 (617) 355-6401

Source: CMS Revalidation Reassignment List, October 2026 release. Reassignment records can lag staffing changes; confirm a current affiliation with the organization.

Areas of Expertise CMS Part B claims 2

Services this provider delivered to Medicare fee-for-service patients, from the CMS Medicare utilization data. Higher counts generally reflect more experience with a service; care delivered outside Medicare is not included.

Exam to measure eye deviation and range of motion 92060

This is an eye exam that checks for any misalignment in your eyes, also known as deviation. It also assesses the movement range of your eyes. The procedure is painless and helps in detecting conditions like strabismus or other vision issues.

70 services27 patients

Photography of content of eyes 92285

Photography of the content of eyes, also known as ocular photography, captures detailed images of different parts of the eye. It helps identify and monitor conditions like glaucoma, macular degeneration, or diabetic retinopathy. The process is non-invasive and painless.

23 services13 patients

Hospital Affiliations CMS Care Compare 2

Hospitals where this provider delivers care, identified from recent Medicare claims and place-of-service records.

Massachusetts Eye And Ear Infirmary -

Acute Care Hospitals · Boston, MA

OwnershipVoluntary non-profit - Private

CMS Certification Number220075

Location243 Charles StreetBoston, MA 02114 · Suffolk County

Emergency services

Boston Children's Hospital

Childrens · Boston, MA

OwnershipVoluntary non-profit - Private

CMS Certification Number223302

Location300 Longwood AvenueBoston, MA 02115 · Suffolk County

Emergency services

Physician Visit Costs CMS claims · ZIP area

Typical Medicare office-visit costs in the 02115 ZIP code area, from fee-for-service claims. These are area statistics, not this provider’s prices; actual charges vary by service and coverage.

New Patient

$144.11 typical visit price

range $63.72 – $189.86

Typical copayment $36.02 (range $15.93 – $47.46)

Most-billed visit code 99204

Established Patient

$78.84 typical visit price

range $21.07 – $155.29

Typical copayment $19.71 (range $5.26 – $38.82)

Most-billed visit code 99213

Amounts reflect what Medicare beneficiaries in this ZIP area are typically charged for office visits. Patients with other coverage should check their individual plans.

Other Providers at the Same Location NPPES 20

Providers registered at the same practice address, or within the immediate area, according to the NPPES registry.

JULIE ANN HANSEN LCSW

Social Worker (Clinical)

300 LONGWOOD AVE
BOSTON, MA 02115

Suffolk County (857) 218-4309

MS. ANNA ROGLIERI

Nurse Practitioner (Psychiatric/Mental Health)

300 LONGWOOD AVE
BOSTON, MA 02115

Suffolk County (617) 355-6000

STEPHEN G. FLYNN M.D.

Anesthesiology (Pediatric Anesthesiology)

300 LONGWOOD AVE
BOSTON, MA 02115

Suffolk County (617) 355-6000

MRS. LAUREN ASHLEY SHARIS P.T., D.P.T

Physical Therapist

300 LONGWOOD AVE
BOSTON, MA 02115

Suffolk County (617) 355-7216

MS. SOYUN KWAN LICSW

Social Worker (Clinical)

300 LONGWOOD AVE, CHILDREN'S HOSPITAL BOSTON
BOSTON, MA 02115

Suffolk County (617) 355-0567

PUJA BANKA M.D.

Pediatrics

300 LONGWOOD AVE, BADER 203
BOSTON, MA 02115

Suffolk County (617) 355-6363

MR. COURTNEY SULLIVAN FRATTO CPNP

Nurse Practitioner (Pediatrics)

300 LONGWOOD AVE, HUNNEWELL BUILDING 322
BOSTON, MA 02115

Suffolk County (857) 218-4085

DR. ELIZABETH S TAGLAUER M.D., PH.D.

Pediatrics (Neonatal-Perinatal Medicine)

300 LONGWOOD AVE
BOSTON, MA 02115

Suffolk County (617) 355-6000

Frequently Asked Questions NPPES & CMS

Common questions about this NPI record, answered from the official NPPES registry and CMS datasets shown on this page.

What is Eric Gaier's NPI number?

The NPI number for Eric Gaier is 1134568199. It was assigned to this individual provider in the NPPES registry on June 22, 2013.

Where is Eric Gaier located?

Eric Gaier practices at 300 Longwood Ave, Boston, MA 02115. The listed phone number is (617) 355-6401.

What is Eric Gaier's specialty?

The primary specialty registered for this NPI is Ophthalmology with taxonomy code 207W00000X.

Is Eric Gaier enrolled in Medicare?

Yes. Eric Gaier is registered in the Medicare PECOS enrollment system.

Which organization bills Medicare for Eric Gaier's services?

According to the CMS Revalidation Reassignment List (October 2026 release), Eric Gaier reassigns Medicare benefits to Childrens Hospital Ophthalmology Foundation Inc (Boston, MA). The reassignment is filed with Medicare on form CMS-855R, signed by both the clinician and the organization, and lets the organization bill Medicare and receive payment for Eric Gaier's services. Reassignment records can lag staffing changes; confirm current arrangements with the organization.

What insurance does Eric Gaier accept?

Health plans from Anthem Blue Cross and Blue Shield and Taro Health list Eric Gaier as in-network in at least one marketplace plan. Coverage varies by plan and year; verify with the insurer or the provider before a visit.

Is Eric Gaier affiliated with any hospitals?

According to CMS data, Eric Gaier is affiliated with Massachusetts Eye And Ear Infirmary - and Boston Children's Hospital.

When was this NPI record last updated?

The NPPES record for Eric Gaier was last updated on April 24, 2020. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 6 years ago. If this record has changed at CMS more recently, you can request an on-demand re-check against the live CMS registry, directly from this page.