MACK EYE CENTER
NPI 1255451563
Ophthalmology in Hoffman Est, IL
About Mack Eye Center NPPES
Official registry information on file with the National Plan and Provider Enumeration System.
MACK EYE CENTER (NPI 1255451563) is a healthcare organization registered as an ophthalmology in Hoffman Est, Illinois and active in the NPI registry since March 2007. The organization lists Robert J Mack, President, as its authorized official.
NPPES Registry Identity
Specialties & Licenses
Other Names 1
Other Identifiers 1
Group Practice 1
Accepted Insurance
Medicare Participation & PECOS CMS
Medicare enrollment and the clinicians who bill Medicare through this organization, from CMS.
Medicare Enrollment Status
Enrolled in Medicare (PECOS)
Mack Eye Center is registered in the CMS Provider Enrollment, Chain and Ownership System (PECOS).
Clinicians Billing Medicare Through This Organization
5Medicare enrollment records show 5 clinicians reassign Medicare billing to Mack Eye Center, which bills Medicare for the services they deliver. Of these, 2 practice at this address and 5 within 10 miles. They are listed nearest first.
Clinicians, nearest first (5)
Hoffman Estates, IL 60169
Hoffman Estates, IL 60169
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 Robert J S Mack, MD PC's NPI number?
The NPI number for Robert J S Mack, MD PC is 1255451563. It was assigned to this organization in the NPPES registry on March 30, 2007. The provider is doing business as Mack Eye Center.
Where is Robert J S Mack, MD PC located?
Robert J S Mack, MD PC is located at 1220 W Higgins Rd Ste 102, Hoffman Est, IL 60169. The listed phone number is (847) 755-9393.
What is Robert J S Mack, MD PC's specialty?
The primary specialty registered for this NPI is Ophthalmology with taxonomy code 207W00000X.
Is Robert J S Mack, MD PC enrolled in Medicare?
Yes. Robert J S Mack, MD PC is registered in the Medicare PECOS enrollment system.
How many clinicians bill Medicare through Robert J S Mack, MD PC?
According to the CMS Revalidation Reassignment List (October 2026 release), 5 clinicians in 2 Medicare specialties reassign their Medicare billing to Robert J S Mack, MD PC. 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 (4) and Optometry (1). Of these, 2 practice at this address and 5 within 10 miles. Reassignment records can lag staffing changes; confirm a current affiliation with the organization.
What insurance does Robert J S Mack, MD PC accept?
Health plans from Ambetter Health, Ambetter Health of Delaware, Anthem Blue Cross and Blue Shield, Blue Cross Blue Shield of Wyoming and Blue Cross and Blue Shield of Louisiana and 4 other insurers list Robert J S Mack, MD PC 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 Robert J S Mack, MD PC was last updated on December 28, 2022. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 3 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.
# Mack Eye Center · NPI 1255451563
Ophthalmology organization in Hoffman Est, Illinois. Organization record, active in the CMS NPPES registry since March 30, 2007.
## Identity
- **NPI:** 1255451563 (Entity type: Organization)
- **Enumerated:** March 30, 2007
- **Primary specialty:** Ophthalmology · taxonomy 207W00000X
- **Legal business name:** Robert J S Mack, Md Pc
- **Organization subpart:** No
- **Authorized official:** Robert Mack, PRESIDENT
## Practice location
- **Address:** 1220 W HIGGINS RD, STE 102, Hoffman Est, IL 60169-4033
- **Phone:** (847) 755-9393 · **Fax:** (847) 755-1560
## Medicare
- **Medicare:** Enrolled in Medicare (PECOS)
- **Clinicians billing through this organization:** 5 clinicians in 2 Medicare specialties reassign Medicare billing to this organization (form CMS-855R); largest: Ophthalmology (4), Optometry (1); 2 practice at this address and 5 within 10 miles · CMS Revalidation Reassignment List, October 2026 release
## Record status
- **NPPES last updated:** December 28, 2022
- **Other identifiers:** Other 6046380001 (IL)
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Source: [NPI Profile](https://npiprofile.com/npi/1255451563) · Data from the CMS NPPES public registry.