MS. KARYN ANN GUILMAIN APRN
NPI 1285584276
Nurse Practitioner - Adult Health in Manchester, CT
About Ms. Karyn Ann Guilmain Aprn NPPES
Official registry information on file with the National Plan and Provider Enumeration System.
MS. KARYN ANN GUILMAIN APRN (NPI 1285584276) is an individual adult health provider in Manchester, Connecticut, licensed in Connecticut (12.016421) and active in the NPI registry since January 2026. She is enrolled in Medicare PECOS and is a graduate of Other (2025).
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
Ms. Karyn Ann Guilmain 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 Karyn Guilmain reassigns Medicare billing to 1 organization. The organization bills Medicare for the services this provider delivers there.
Manchester, CT 06040
- Reassigned Medicare billing, Connecticut enrollment
- 6 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 06040 ZIP code area, from fee-for-service claims. These are area statistics, not this provider’s prices; actual charges vary by service and coverage.
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 Karyn Guilmain's NPI number?
The NPI number for Karyn Guilmain is 1285584276. It was assigned to this individual provider in the NPPES registry on January 30, 2026.
Where is Karyn Guilmain located?
Karyn Guilmain practices at 945 Main St Ste 102, Manchester, CT 06040. The listed phone number is (860) 643-0319.
What is Karyn Guilmain's specialty?
The primary specialty registered for this NPI is Nurse Practitioner, specializing in Adult Health, with taxonomy code 363LA2200X.
Is Karyn Guilmain enrolled in Medicare?
Yes. Karyn Guilmain 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 Karyn Guilmain's services?
According to the CMS Revalidation Reassignment List (October 2026 release), Karyn Guilmain reassigns Medicare benefits to Heritage Internal Medicine Associates LLC (Manchester, 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 Karyn Guilmain's services. Reassignment records can lag staffing changes; confirm current arrangements with the organization.
What insurance does Karyn Guilmain accept?
Health plans from Anthem Blue Cross and Blue Shield list Karyn Guilmain 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 Karyn Guilmain was last updated on January 30, 2026. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 9 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.
# Ms. Karyn Ann Guilmain, APRN · NPI 1285584276
Adult Health physician in Manchester, Connecticut. Individual provider, active in the CMS NPPES registry since January 30, 2026.
## Identity
- **NPI:** 1285584276 (Entity type: Individual)
- **Enumerated:** January 30, 2026
- **Primary specialty:** Nurse Practitioner - Adult Health · taxonomy 363LA2200X
- **State license:** 12.016421 (Connecticut)
- **Sole proprietor:** No
## Practice location
- **Address:** 945 MAIN ST STE 102, Manchester, CT 06040-6036
- **Phone:** (860) 643-0319
## 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:** Heritage Internal Medicine Associates LLC (NPI 1609051044, Manchester, CT), under Medicare reassignment (form CMS-855R) · CMS Revalidation Reassignment List, October 2026 release
- **Medical school:** Other, class of 2025
## Record status
- **NPPES last updated:** January 30, 2026
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Source: [NPI Profile](https://npiprofile.com/npi/1285584276) · Data from the CMS NPPES public registry.