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NEIL G. CALLAHAN O.D., P.C.
NPI 1043296429
Optometrist in Hermitage, PA

Active since December 19, 2005
2926 E STATE ST, HERMITAGE, PA 16148(724) 346-2020(724) 346-1121 Get Directions Write a Review

NPPES record last updated: August 22, 2020. Verified against the NPPES registry weekly; last sync: October 18, 2026.

About Neil G. Callahan O.d., P.c. NPPES

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

NEIL G. CALLAHAN O.D., P.C. (NPI 1043296429) is a healthcare organization registered as an optometrist in Hermitage, Pennsylvania and active in the NPI registry since December 2005. The organization lists Neil G. Callahan, President, as its authorized official.

NPPES Registry Identity

NPI1043296429
Entity TypeOrganization
Primary Taxonomy152W00000X
Legal Business NameNEIL G. CALLAHAN O.D., P.C.
Location Address2926 E STATE STHermitage, PA 16148-2757
Mailing Address2926 E State StHermitage, PA 16148-2757 · (724) 346-2020 · Fax (724) 346-1121
Phone(724) 346-2020
Fax(724) 346-1121
Organization SubpartNo
Authorized OfficialNeil G. CallahanPresident · (724) 346-2020
Enumeration DateDecember 19, 2005
Last NPPES UpdateAugust 22, 2020
✔ NPI 1043296429 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses

★ Primary SpecialtyOptometristEye and Vision Services Providers
Taxonomy Code152W00000X
License✔ Licensed in PA · OEG001214
Definition
Doctors of optometry (ODs) are the primary health care professionals for the eye. Optometrists examine, diagnose, treat, and manage diseases, injuries, and disorders of the visual system, the eye, and associated structures as well as identify related systemic conditions affecting the eye. An optometrist has completed pre-professional undergraduate education in a college or university and four years of professional education at a college of optometry, leading to the doctor of optometry (O.D.) degree. Some optometrists complete an optional residency in a specific area of practice. Optometrists are eye health care professionals state-licensed to diagnose and treat diseases and disorders of the eye and visual system.
2926 E STATE ST, Hermitage, PA 16148
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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

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)

Neil G. Callahan O.d., P.c. is registered in the CMS Provider Enrollment, Chain and Ownership System (PECOS).

Medicare Revalidation Due Date

Revalidation due by December 31, 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
StatePennsylvaniaEnrollment IDO20050214000221Non-DME Part B · Clinic/Group PracticeDue dateDecember 31, 2026
Source: CMS Revalidation Due Date List, October 2026 release.

Clinicians Billing Medicare Through This Organization

Medicare enrollment records show 1 clinician reassigns Medicare billing to Neil G. Callahan O.D., P.C., which bills Medicare for the services this clinician delivers.

Clinician (1)

Neil Callahan, O.D.
Optometry
NPI 1568568277
2926 E STATE ST
Hermitage, PA 16148
(724) 346-2020
✔ PECOS✔ Accepts MedicareSame address

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

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 Neil G. Callahan O.D., P.C.'s NPI number?

The NPI number for Neil G. Callahan O.D., P.C. is 1043296429. It was assigned to this organization in the NPPES registry on December 19, 2005.

Where is Neil G. Callahan O.D., P.C. located?

Neil G. Callahan O.D., P.C. is located at 2926 E State St, Hermitage, PA 16148. The listed phone number is (724) 346-2020.

What is Neil G. Callahan O.D., P.C.'s specialty?

The primary specialty registered for this NPI is Optometrist with taxonomy code 152W00000X.

Is Neil G. Callahan O.D., P.C. enrolled in Medicare?

Yes. Neil G. Callahan O.D., P.C. is registered in the Medicare PECOS enrollment system.

When is Neil G. Callahan O.D., P.C.'s Medicare revalidation due?

According to the CMS Revalidation Due Date List (October 2026 release), the Medicare Non-DME Part B enrollment for this organization (Pennsylvania, Clinic/Group Practice) is due for revalidation by December 31, 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 Neil G. Callahan O.D., P.C.?

According to the CMS Revalidation Reassignment List (October 2026 release), 1 clinician (Optometry) reassigns their Medicare billing to Neil G. Callahan O.D., P.C.. 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. Reassignment records can lag staffing changes; confirm a current affiliation with the organization.

When was this NPI record last updated?

The NPPES record for Neil G. Callahan O.D., P.C. was last updated on August 22, 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.