MS. GRETHA REGINA LEWIS NP-C
NPI 1720398340
Nurse Practitioner in Meriden, CT
About Ms. Gretha Regina Lewis Np-c NPPES
Official registry information on file with the National Plan and Provider Enumeration System.
MS. GRETHA REGINA LEWIS NP-C (NPI 1720398340) is an individual nurse practitioner in Meriden, Connecticut, licensed in Connecticut (004516) and active in the NPI registry since October 2010. She is enrolled in Medicare PECOS and is a graduate of Other (2009).
NPPES Registry Identity
Specialties & Licenses 2
Other Identifiers 1
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. Gretha Regina Lewis Np-c 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
6Medicare enrollment records show Gretha Lewis reassigns Medicare billing to 6 organizations. Each organization bills Medicare for the services this provider delivers there; the nearest is listed first.
New Britain, CT 06051
- Reassigned Medicare billing, Connecticut enrollment
- 468 clinicians in this Medicare group
Wethersfield, CT 06109
- Reassigned Medicare billing, Connecticut enrollment
- 747 clinicians in this Medicare group
Waterbury, CT 06708
- Reassigned Medicare billing, Connecticut enrollment
- 2 clinicians in this Medicare group
Hartford, CT 06106
- Reassigned Medicare billing, Connecticut enrollment
- 1,921 clinicians in this Medicare group
Hartford, CT 06105
- Reassigned Medicare billing, Connecticut enrollment
- 1,186 clinicians in this Medicare group
Lakewood, NJ 08701
- Reassigned Medicare billing, Connecticut enrollment
- 10 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 06450 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 Gretha Lewis's NPI number?
The NPI number for Gretha Lewis is 1720398340. It was assigned to this individual provider in the NPPES registry on October 16, 2010.
Where is Gretha Lewis located?
Gretha Lewis practices at 158 Paddock Ave Apt 904, Meriden, CT 06450. The listed phone number is (860) 778-3322.
What is Gretha Lewis's specialty?
The primary specialty registered for this NPI is Nurse Practitioner with taxonomy code 363L00000X.
Is Gretha Lewis enrolled in Medicare?
Yes. Gretha Lewis 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 Gretha Lewis's services?
According to the CMS Revalidation Reassignment List (October 2026 release), Gretha Lewis reassigns Medicare benefits to 6 organizations: Starling Physicians, PLLC (New Britain, CT), Hartford Healthcare Medical Group, Inc (Wethersfield, CT), Peaceful Minds Treatment Center LLC (Waterbury, CT), Hartford Healthcare Medical Group Specialists, PLLC (Hartford, CT), Trinity Health Of New England Provider Network Organization Inc (Hartford, CT) and 1 more organization, listed in the Medicare section above. 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 Gretha Lewis's services. Reassignment records can lag staffing changes; confirm current arrangements with the organization.
When was this NPI record last updated?
The NPPES record for Gretha Lewis was last updated on October 22, 2025. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 11 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. Gretha Regina Lewis, NP-C · NPI 1720398340
Nurse Practitioner physician in Meriden, Connecticut. Individual provider, active in the CMS NPPES registry since October 16, 2010.
## Identity
- **NPI:** 1720398340 (Entity type: Individual)
- **Enumerated:** October 16, 2010
- **Primary specialty:** Nurse Practitioner · taxonomy 363L00000X
- **State license:** 004516 (Connecticut)
- **Sole proprietor:** No
## Practice location
- **Address:** 158 PADDOCK AVE APT 904, Meriden, CT 06450-6996
- **Phone:** (860) 778-3322
## 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:** 6 organizations under Medicare reassignment (form CMS-855R): Starling Physicians, PLLC (NPI 1720182991, New Britain, CT); Hartford Healthcare Medical Group, Inc (NPI 1043561301, Wethersfield, CT); Peaceful Minds Treatment Center LLC (NPI 1578370326, Waterbury, CT); Hartford Healthcare Medical Group Specialists, PLLC (NPI 1023584216, Hartford, CT); Trinity Health Of New England Provider Network Organization Inc (NPI 1003882812, Hartford, CT); and 1 more · CMS Revalidation Reassignment List, October 2026 release
- **Medical school:** Other, class of 2009
## Record status
- **NPPES last updated:** October 22, 2025
- **Other identifiers:** Other 004516 (CT)
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Source: [NPI Profile](https://npiprofile.com/npi/1720398340) · Data from the CMS NPPES public registry.