JACK GREENAN
NPI 1639613979
Optometrist in Texarkana, TX
About Jack Greenan NPPES
Official registry information on file with the National Plan and Provider Enumeration System.
JACK GREENAN (NPI 1639613979) is an individual optometrist in Texarkana, Texas, licensed in Texas (9121T) and active in the NPI registry since December 2016. He is enrolled in Medicare PECOS and is a graduate of Other (2016).
NPPES Registry Identity
Specialties & Licenses
Accepted Insurance
Medicare Participation & PECOS CMS
Medicare enrollment, assignment, billing reassignment, and ordering and referring status from CMS.
Medicare Enrollment Status
Enrolled in Medicare and accepts Medicare assignment
Jack Greenan is registered in PECOS and agrees to accept the Medicare-approved amount as full payment. Medicare patients are not billed beyond the standard deductible and coinsurance.
Medicare Billing Reassignments
2Medicare enrollment records show Jack Greenan reassigns Medicare billing to 2 organizations. Each organization bills Medicare for the services this provider delivers there; the nearest is listed first.
Texarkana, TX 75503
- Reassigned Medicare billing, Texas and Arkansas enrollments
- Also billed through NPI 1417413717 (Arkansas)
- 396 clinicians in this Medicare group
Kerrville, TX 78028
- Reassigned Medicare billing, Texas enrollment
- 404 clinicians in this Medicare group
Source: CMS Revalidation Reassignment List, October 2026 release. Reassignment records can lag staffing changes; confirm a current affiliation with the organization.
Physician Visit Costs CMS claims · ZIP area
Typical Medicare office-visit costs in the 75503 ZIP code area, from fee-for-service claims. These are area statistics, not this provider’s prices; actual charges vary by service and coverage.
Other Providers at the Same Location NPPES 10
Providers registered at the same practice address, or within the immediate area, according to the NPPES registry.
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 Jack Greenan's NPI number?
The NPI number for Jack Greenan is 1639613979. It was assigned to this individual provider in the NPPES registry on December 6, 2016.
Where is Jack Greenan located?
Jack Greenan practices at 2703 Richmond Rd, Texarkana, TX 75503. The listed phone number is (903) 838-0783.
What is Jack Greenan's specialty?
The primary specialty registered for this NPI is Optometrist with taxonomy code 152W00000X.
Is Jack Greenan enrolled in Medicare?
Yes. Jack Greenan is registered in the Medicare PECOS system and accepts Medicare assignment, which means accepting the Medicare-approved amount as payment in full for covered services.
Which organizations bill Medicare for Jack Greenan's services?
According to the CMS Revalidation Reassignment List (October 2026 release), Jack Greenan reassigns Medicare benefits to 2 organizations: Med Southwest, PLLC (Texarkana, TX) and Aeg Texas Professional PLLC (Kerrville, TX). Each 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 Jack Greenan's services. Reassignment records can lag staffing changes; confirm current arrangements with the organization.
What insurance does Jack Greenan accept?
Health plans from Ambetter Health, Ambetter from Arizona Complete Health, Ambetter from Arkansas Health & Wellness, Ambetter from Louisiana Healthcare Connections and Ambetter from Superior HealthPlan and 17 other insurers list Jack Greenan 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 Jack Greenan was last updated on June 3, 2019. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 7 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.