Lynn Elizabeth Mastrianni, NP - Medicare Nurse Practitioner in New Haven, CT

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Lynn Elizabeth Mastrianni, NP is a medicare enrolled "Nurse Practitioner - Gerontology" in New Haven, Connecticut. She graduated from nursing school in 2014 and has 11 years of diverse experience with area of expertise as Nurse Practitioner. She is a member of the group practice Yale University and her current practice location is 20 York St, New Haven, Connecticut. You can reach out to her office (for appointments etc.) via phone at (203) 200-4822.

Lynn Elizabeth Mastrianni is licensed to practice in Connecticut (license number 6560) and she also participates in the medicare program. She accepts medicare assignments (which means she accepts the Medicare-approved amount; you will not be billed for any more than the Medicare deductible and coinsurance) and her NPI Number is 1205177672.

Contact Information

Lynn Elizabeth Mastrianni, NP
20 York St,
New Haven, CT 06510-3220
(203) 200-4822
(203) 200-2099

Map and Direction




Provider's Profile

Full NameLynn Elizabeth Mastrianni
GenderFemale
SpecialityNurse Practitioner
Experience11 Years
Location20 York St, New Haven, Connecticut
Accepts Medicare AssignmentsYes. She accepts the Medicare-approved amount; you will not be billed for any more than the Medicare deductible and coinsurance.
  Medical Education and Training:
  • Lynn Elizabeth Mastrianni graduated from nursing school in 2014
  NPI Data:
  • NPI Number: 1205177672
  • Provider Enumeration Date: 03/11/2013
  • Last Update Date: 09/22/2025
  Medicare PECOS Information:
  • PECOS PAC ID: 7315228509
  • Enrollment ID: I20161230000644

Medical Identifiers

Medical identifiers for Lynn Elizabeth Mastrianni such as npi, medicare ID, medicare PIN, medicaid, etc.
IdentifierTypeStateIssuer
1205177672NPI-NPPES

Medical Taxonomies and Licenses

TaxonomyTypeLicense (State)Status
363LA2200XNurse Practitioner - Adult Health 006560 (Connecticut)Secondary
363LG0600XNurse Practitioner - Gerontology 6560 (Connecticut)Primary

Medical Facilities Affiliation

Facility NameLocationFacility Type
Yale-new Haven HospitalNew haven, CTHospital
Bridgeport HospitalBridgeport, CTHospital
Greenwich Hospital Association -Greenwich, CTHospital
Lawrence & Memorial HospitalNew london, CTHospital

Group Practice Association

Group Practice NameGroup PECOS PAC IDNo. of Members
Yale University94360617362389

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. Lynn Elizabeth Mastrianni allows following entities to bill medicare on her behalf.
Entity NameYale University
Entity TypePart B Supplier - Clinic/group Practice
Entity IdentifiersNPI Number: 1205822236
PECOS PAC ID: 9436061736
Enrollment ID: O20031105000015
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

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. Lynn Elizabeth Mastrianni 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
Lynn Elizabeth Mastrianni, NP
247 Flanders St,
Southington, CT 06489-2085

Ph: (860) 919-3348		Lynn Elizabeth Mastrianni, NP
20 York St,
New Haven, CT 06510-3220

Ph: (203) 200-4822

Reviews and Comments


Nurse Practitioner Nurses in New Haven, CT

Audrey P Senior, APRN
Nurse Practitioner
Medicare: Not Enrolled in Medicare
Practice Location: 20 York St, New Haven, CT 06510
Phone: 203-688-5860    Fax: 203-688-7533
Ashley Antonucci, DNP- FNP
Nurse Practitioner
Medicare: Accepting Medicare Assignments
Practice Location: 1 Long Wharf Dr, New Haven, CT 06511
Phone: 203-688-8800    
Bailey Daum,
Nurse Practitioner
Medicare: Not Enrolled in Medicare
Practice Location: 40 Trumbull St, New Haven, CT 06510
Phone: 646-270-4857    
Kentrone Vines, AGACNP-BC
Nurse Practitioner
Medicare: Accepting Medicare Assignments
Practice Location: 20 York St, New Haven, CT 06510
Phone: 203-688-4242    
Mrs. Lisa Jane Warren, APRN
Nurse Practitioner
Medicare: Not Enrolled in Medicare
Practice Location: 20 York St, New Haven, CT 06510
Phone: 203-688-7952    
Mrs. Rocca L Perruccio, FNP
Nurse Practitioner
Medicare: Not Enrolled in Medicare
Practice Location: 428 Columbus Ave, New Haven, CT 06519
Phone: 203-503-3000    Fax: 203-503-3224
Alexa Blood, APRN
Nurse Practitioner
Medicare: Accepting Medicare Assignments
Practice Location: 800 Howard Ave, New Haven, CT 06519
Phone: 203-785-2565    

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.