NASHUA EYE ASSOCIATES, P.A.
NPI 1801891247
Ophthalmology in Nashua, NH

Active since June 14, 2005CLIA 30D2073115 · Waiver
5 COLISEUM AVE, NASHUA, NH 03063(603) 882-9800(603) 882-0556 Get Directions Write a Review

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

Record update history: Aug 24, 2026, Jul 21, 2022 (2 updates tracked since 2022).

About Nashua Eye Associates, P.a. NPPES

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

NASHUA EYE ASSOCIATES, P.A. (NPI 1801891247) is a healthcare organization registered as an ophthalmology in Nashua, New Hampshire and active in the NPI registry since June 2005. The organization holds a CLIA Waiver certificate valid through February 10, 2028 and lists John Dagianis, President, as its authorized official.

NPPES Registry Identity

NPI1801891247
Entity TypeOrganization
Primary Taxonomy207W00000X
Legal Business NameNASHUA EYE ASSOCIATES, P.A.
Location Address5 COLISEUM AVENashua, NH 03063-3292
Mailing Address5 Coliseum AveNashua, NH 03063-3292 · (603) 882-9800 · Fax (603) 882-0556
Fax(603) 882-0556
Organization SubpartNo
Authorized OfficialJohn DagianisPresident · (603) 882-9800
Enumeration DateJune 14, 2005
Last NPPES UpdateAugust 24, 20262 updates tracked since enumeration
NPPES CertifiedAugust 24, 2026
✔ NPI 1801891247 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses

★ Primary SpecialtyOphthalmologyAllopathic & Osteopathic Physicians
Taxonomy Code207W00000X
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.
5 COLISEUM AVE, Nashua, NH 03063

Other Identifiers 1

Medicaid99006886NH

Group Practice 1

Group TaxonomyThis provdier is a business group of one or more individual practitioners, all of who practice with the same area of specialization.193400000X SINGLE SPECIALTY GROUP

Accepted Insurance

Medicare Participation & PECOS CMS

Medicare enrollment, revalidation and the clinicians who bill Medicare through this organization, from CMS.

Medicare Enrollment Status

✔

Enrolled in Medicare (PECOS)

Nashua Eye Associates, P.a. is registered in the CMS Provider Enrollment, Chain and Ownership System (PECOS).

Medicare Revalidation Due Date

Revalidation due by November 30, 2026

Medicare-enrolled providers and suppliers confirm their enrollment information with CMS on a set cycle, every 5 years for most and every 3 years for medical equipment suppliers. CMS sets the due date for each enrollment.

StateEnrollment IDDue date
StateNew HampshireEnrollment IDO20100930051509DME · Physician - OphthalmologyDue dateNovember 30, 2026
Source: CMS Revalidation Due Date List, October 2026 release.

Clinicians Billing Medicare Through This Organization

21

Medicare enrollment records show 21 clinicians reassign Medicare billing to Nashua Eye Associates, P.A., which bills Medicare for the services they deliver. Of these, 13 practice within 10 miles. Listed here are the 20 practicing nearest to this location.

Clinicians by Medicare Specialty 2

Ophthalmology12
Optometry9

Nearest to this location (20)

See all 21
Ophthalmology
NPI 1972951986
5 COLISEUM AVE
Nashua, NH 03063
(603) 882-9800
✔ PECOS✔ Accepts Medicare0.3 mi
Ophthalmology
NPI 1891790986
5 COLISEUM AVE
Nashua, NH 03063
(603) 882-9800
✔ PECOS✔ Accepts Medicare0.3 mi
Ophthalmology
NPI 1972508026
5 COLISEUM AVE
Nashua, NH 03063
(603) 882-9800
✔ PECOS✔ Accepts Medicare0.3 mi
Ophthalmology
NPI 1568418028
5 COLISEUM AVE
Nashua, NH 03063
(603) 882-9800
✔ PECOS✔ Accepts Medicare0.3 mi
Optometry
NPI 1821093915
5 COLISEUM AVE
Nashua, NH 03063
(603) 882-9800
✔ PECOS✔ Accepts Medicare0.3 mi
Optometry
NPI 1528816899
5 COLISEUM AVE
Nashua, NH 03063
(603) 882-9800
✔ PECOS✔ Accepts Medicare0.3 mi
Optometry
NPI 1376902627
5 COLISEUM AVE
Nashua, NH 03063
(603) 882-9800
✔ PECOS✔ Accepts Medicare0.3 mi
Optometry
NPI 1720502966
5 COLISEUM AVE
Nashua, NH 03063
(603) 882-9800
✔ PECOS✔ Accepts Medicare0.3 mi
Ophthalmology
NPI 1205198629
5 COLISEUM AVENUE NASHUA EYE ASSOCIATES, P.A.
Nashua, NH 03063
(603) 882-9800
✔ PECOS✔ Accepts Medicare0.3 mi
Ophthalmology
NPI 1811992993
5 COLISEUM AVE
Nashua, NH 03063
(603) 882-9800
✔ PECOS✔ Accepts Medicare0.3 mi
Optometry
NPI 1912212069
5 COLISEUM AVE
Nashua, NH 03063
(603) 882-9800
✔ PECOS✔ Accepts Medicare0.3 mi
Optometry
NPI 1720083819
5 COLISEUM AVE
Nashua, NH 03063
(603) 882-9800
✔ PECOS✔ Accepts Medicare0.3 mi
Optometry
NPI 1306512090
5 COLISEUM AVE STE 101
Nashua, NH 03063
(603) 882-9800
✔ PECOS✔ Accepts Medicare1.2 mi
Optometry
NPI 1942683842
764 2ND ST
Manchester, NH 03102
(603) 669-3925
✔ PECOS✔ Accepts Medicare15 mi
Ophthalmology
NPI 1851312367
LAHEY CLINIC 41 MALL ROAD
Burlington, MA 01805
(781) 744-5215
✔ PECOS✔ Accepts Medicare22 mi
Ophthalmology
NPI 1205192697
41 MALL ROAD
Burlington, MA 01805
(781) 744-8000
✔ PECOS✔ Accepts Medicare23 mi
Ophthalmology
NPI 1386628501
1 ESSEX CENTER DR LAHEY CLINIC
Peabody, MA 01960
(978) 538-4400
✔ PECOS✔ Accepts Medicare32 mi
Ophthalmology
NPI 1750915450
10 CENTENNIAL DR
Peabody, MA 01960
(781) 216-3400
✔ PECOS32 mi
Ophthalmology
NPI 1871889428
50 STANIFORD ST STE 600
Boston, MA 02114
(617) 367-4800
✔ PECOS✔ Accepts Medicare35 mi
Ophthalmology
NPI 1922459817
800 WASHINGTON ST
Boston, MA 02111
(617) 636-5000
✔ PECOS✔ Accepts Medicare36 mi
See all 21 clinicians

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

CLIA Laboratory Certificates CMS CLIA

Laboratory certificates issued under the Clinical Laboratory Improvement Amendments (CLIA) program, which sets federal quality standards for human laboratory testing in the United States. There is no official CMS crosswalk between CLIA and NPI numbers; these certificates are associated with this NPI by matching facility names, locations and phone numbers in the CMS CLIA registry.

Certificate of Waiver 30D2073115

Nashua Eye Associates, PA · Nashua, NH
Active · expires Feb 10, 2028
CLIA Number30D2073115
Laboratory TypePhysician Office
Certificate Effective DateFebruary 11, 2026
Certificate Expiration DateFebruary 10, 2028
Laboratory DirectorJohn Dagianis MD
Laboratory Phone(603) 882-9800
Laboratory LocationNashua Eye Associates, PA5 Coliseum Avenue, Nashua, NH 03063
CLIA data matches this NPI record on: Address Name Phone
This certificate is issued to a laboratory to perform only waived tests.

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 Nashua Eye Associates, P.A.'s NPI number?

The NPI number for Nashua Eye Associates, P.A. is 1801891247. It was assigned to this organization in the NPPES registry on June 14, 2005.

Where is Nashua Eye Associates, P.A. located?

Nashua Eye Associates, P.A. is located at 5 Coliseum Ave, Nashua, NH 03063. The listed phone number is (603) 882-9800.

What is Nashua Eye Associates, P.A.'s specialty?

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

Is Nashua Eye Associates, P.A. enrolled in Medicare?

Yes. Nashua Eye Associates, P.A. is registered in the Medicare PECOS enrollment system.

When is Nashua Eye Associates, P.A.'s Medicare revalidation due?

According to the CMS Revalidation Due Date List (October 2026 release), the Medicare DME enrollment for this organization (New Hampshire, Physician - Ophthalmology) is due for revalidation by November 30, 2026. Medicare providers and suppliers revalidate their enrollment every 5 years, and medical equipment suppliers every 3 years. Confirm current requirements with your Medicare Administrative Contractor.

How many clinicians bill Medicare through Nashua Eye Associates, P.A.?

According to the CMS Revalidation Reassignment List (October 2026 release), 21 clinicians in 2 Medicare specialties reassign their Medicare billing to Nashua Eye Associates, P.A.. A 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 the clinician's services. The largest specialties are Ophthalmology (12) and Optometry (9). Of these, 13 practice within 10 miles. Reassignment records can lag staffing changes; confirm a current affiliation with the organization.

Does Nashua Eye Associates, P.A. hold a CLIA laboratory certificate?

Yes. A Certificate of Waiver (number 30D2073115) is associated with this NPI, valid through February 10, 2028. CLIA certificates authorize laboratory testing under the federal Clinical Laboratory Improvement Amendments program.

What insurance does Nashua Eye Associates, P.A. accept?

Health plans from Ambetter from NH Healthy Families, Anthem Blue Cross and Blue Sheld, Anthem Blue Cross and Blue Shield, Blue Cross and Blue Shield of Montana and Blue Cross and Blue Shield of Oklahoma and 2 other insurers list Nashua Eye Associates, P.A. 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.

When was this NPI record last updated?

The NPPES record for Nashua Eye Associates, P.A. was last updated on August 24, 2026. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 2 months 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.