GREGORY PAUL MACKAY APRN
NPI 1497436596
Nurse Practitioner - Acute Care in Norwich, CT
About Gregory Paul Mackay Aprn NPPES
Official registry information on file with the National Plan and Provider Enumeration System.
GREGORY PAUL MACKAY APRN (NPI 1497436596) is an individual acute care provider in Norwich, Connecticut, licensed in Connecticut (12218) and active in the NPI registry since July 2023. He is enrolled in Medicare PECOS and is a graduate of Other (2023).
NPPES Registry Identity
Specialties & Licenses 2
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
Gregory Paul Mackay Aprn 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 Reassignment
Medicare enrollment records show Gregory Mackay reassigns Medicare billing to 1 organization. The organization bills Medicare for the services this provider delivers there.
Norwich, CT 06360
- Reassigned Medicare billing, Connecticut enrollment
- 430 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.
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.
Physician Visit Costs CMS claims · ZIP area
Typical Medicare office-visit costs in the 06360 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 20
Providers registered at the same practice address, or within the immediate area, according to the NPPES registry.
NORWICH, CT 06360
NORWICH, CT 06360
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 Gregory Mackay's NPI number?
The NPI number for Gregory Mackay is 1497436596. It was assigned to this individual provider in the NPPES registry on July 31, 2023.
Where is Gregory Mackay located?
Gregory Mackay practices at 326 Washington St, Norwich, CT 06360. The listed phone number is (860) 889-8331.
What is Gregory Mackay's specialty?
The primary specialty registered for this NPI is Nurse Practitioner, specializing in Acute Care, with taxonomy code 363LA2100X.
Is Gregory Mackay enrolled in Medicare?
Yes. Gregory Mackay 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 organization bills Medicare for Gregory Mackay's services?
According to the CMS Revalidation Reassignment List (October 2026 release), Gregory Mackay reassigns Medicare benefits to The William W Backus Hospital (Norwich, CT). 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 Gregory Mackay's services. Reassignment records can lag staffing changes; confirm current arrangements with the organization.
What insurance does Gregory Mackay accept?
Health plans from Anthem Blue Cross and Blue Shield list Gregory Mackay 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 Gregory Mackay was last updated on August 21, 2023. 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.
# Gregory Paul Mackay, APRN · NPI 1497436596
Acute Care physician in Norwich, Connecticut. Individual provider, active in the CMS NPPES registry since July 31, 2023.
## Identity
- **NPI:** 1497436596 (Entity type: Individual)
- **Enumerated:** July 31, 2023
- **Primary specialty:** Nurse Practitioner - Acute Care · taxonomy 363LA2100X
- **State license:** 12218 (Connecticut)
- **Sole proprietor:** No
## Practice location
- **Address:** 326 WASHINGTON ST, Norwich, CT 06360-2740
- **Phone:** (860) 889-8331
## Medicare
- **Medicare:** Enrolled (PECOS); accepts Medicare assignment
- **Ordering & referring:** eligible for Part B labs & imaging, durable medical equipment, home health, power mobility devices
- **Bills Medicare through:** The William W Backus Hospital (NPI 1467517235, Norwich, CT), under Medicare reassignment (form CMS-855R) · CMS Revalidation Reassignment List, October 2026 release
- **Medical school:** Other, class of 2023
## Record status
- **NPPES last updated:** August 21, 2023
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Source: [NPI Profile](https://npiprofile.com/npi/1497436596) · Data from the CMS NPPES public registry.