Ms Gretha Regina Lewis, NP-C - Medicare Nurse Practitioner in Waterbury, CT

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Ms Gretha Regina Lewis, NP-C is a medicare enrolled "Nurse Practitioner" in Waterbury, Connecticut. Her current practice location is 1389 W Main St Ste 122, Waterbury, Connecticut. You can reach out to her office (for appointments etc.) via phone at (475) 689-3381.

Ms Gretha Regina Lewis is licensed to practice in Connecticut (license number 004516) and she also participates in the medicare program. She does not accept medicare assignments directly but she may accept medicare through third-party (refer to Reassignment section below) and may also prescribe medicare part D drugs. Her NPI Number is 1720398340.

Contact Information

Ms Gretha Regina Lewis, NP-C
1389 W Main St Ste 122,
Waterbury, CT 06708-3104
(475) 689-3381
(203) 527-4697

Map and Direction




Provider's Profile

Full NameMs Gretha Regina Lewis
GenderFemale
SpecialityNurse Practitioner
Location1389 W Main St Ste 122, Waterbury, Connecticut
Accepts Medicare AssignmentsMedicare enrolled and may accept medicare through third-party reassignment. May prescribe medicare part D drugs.
  NPI Data:
  • NPI Number: 1720398340
  • Provider Enumeration Date: 10/16/2010
  • Last Update Date: 04/08/2025
  Medicare PECOS Information:
  • PECOS PAC ID: 7214101617
  • Enrollment ID: I20111121000916

Medical Identifiers

Medical identifiers for Ms Gretha Regina Lewis such as npi, medicare ID, medicare PIN, medicaid, etc.
IdentifierTypeStateIssuer
1720398340NPI-NPPES
004516OtherCTLICENSE

Medical Taxonomies and Licenses

TaxonomyTypeLicense (State)Status
363LA2200XNurse Practitioner - Adult Health 004516 (Connecticut)Secondary
363L00000XNurse Practitioner 004516 (Connecticut)Primary

Medicare Reassignments

Some practitioners may not bill the customers directly but medicare billing happens through clinics / group practice / hospitals where the provider works. Medicare reassignment of benefits is a mechanism by which practitioners allow third parties to bill and receive payment for medicare services performed by them. Ms Gretha Regina Lewis allows following entities to bill medicare on her behalf.
Entity NameTrinity Health Of New England Provider Network Organization Inc
Entity TypePart B Supplier - Clinic/group Practice
Entity IdentifiersNPI Number: 1003882812
PECOS PAC ID: 0941113567
Enrollment ID: O20031110000651
Entity NameStarling Physicians, Pllc
Entity TypePart B Supplier - Clinic/group Practice
Entity IdentifiersNPI Number: 1467537290
PECOS PAC ID: 7517863749
Enrollment ID: O20031209000877
Entity NameHartford Healthcare Medical Group Inc
Entity TypePart B Supplier - Clinic/group Practice
Entity IdentifiersNPI Number: 1043561301
PECOS PAC ID: 1153573902
Enrollment ID: O20121201000007
Entity NameHartford Healthcare Medical Group Specialists Pllc
Entity TypePart B Supplier - Clinic/group Practice
Entity IdentifiersNPI Number: 1023584216
PECOS PAC ID: 3173866241
Enrollment ID: O20190514001441
Entity NamePeaceful Minds Treatment Center Llc
Entity TypePart B Supplier - Clinic/group Practice
Entity IdentifiersNPI Number: 1578370326
PECOS PAC ID: 2264952423
Enrollment ID: O20250219001230

Medicare Part D Prescriber Enrollment

Any physician or other eligible professional who prescribes Part D drugs must either enroll in the Medicare program or opt out in order to prescribe drugs to their patients with Part D prescription drug benefit plans. Ms Gretha Regina Lewis is enrolled with medicare and thus, if eligible, can prescribe medicare part D drugs to patients with medicare part D benefits.

Mailing Address and Practice Location

Mailing AddressPractice Location Address
Ms Gretha Regina Lewis, NP-C
1389 W Main St Ste 122,
Waterbury, CT 06708-3104

Ph: (475) 689-3381		Ms Gretha Regina Lewis, NP-C
1389 W Main St Ste 122,
Waterbury, CT 06708-3104

Ph: (475) 689-3381

Reviews and Comments


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Medicare Program: Medicare is a federal government program which provides health insurance to people who are 65 or older. This program also covers certain younger people with disabilities (who receive Social Security Disability Insurance - SSDI), and people with End-Stage Renal Disease (permanent kidney failure requiring dialysis or a transplant, sometimes called ESRD.

Medicare Assignment: Assignment means that your doctor, provider, or supplier agrees (or is required by law) to accept the Medicare-approved amount as full payment for covered services. Most doctors, providers, and suppliers accept assignment, but you should always check to make sure. Participating providers have signed an agreement to accept assignment for all Medicare-covered services.

NPI Number: The National Provider Identifier (NPI) is a unique identification number for covered health care providers. The NPI must be used in lieu of legacy provider identifiers in the HIPAA standards transactions. Covered health care providers and all health plans and health care clearinghouses must use the NPIs in the administrative and financial transactions adopted under HIPAA (Health Insurance Portability and Accountability Act).

Our Data: Information on www.medicarelist.com is built using data sources published by Centers for Medicare & Medicaid Services (CMS) under Freedom of Information Act (FOIA). The information disclosed on the NPI Registry are FOIA-disclosable and are required to be disclosed under the FOIA and the eFOIA amendments to the FOIA. There is no way to 'opt out' or 'suppress' the NPPES record data for health care providers with active NPIs.