Alexandra Haley Mackenzie, APRN, PMHNP-BC - Medicare Nurse Practitioner in Johnston, RI

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Alexandra Haley Mackenzie, APRN, PMHNP-BC is a medicare enrolled "Nurse Practitioner - Psychiatric/mental Health" in Johnston, Rhode Island. She graduated from nursing school in 2024 and has 2 years of diverse experience with area of expertise as Nurse Practitioner. She is a member of the group practice Gateway Healthcare Inc and her current practice location is 1443 Hartford Ave, Johnston, Rhode Island. You can reach out to her office (for appointments etc.) via phone at (401) 273-8100.

Alexandra Haley Mackenzie is licensed to practice in Rhode Island (license number APRN04583) 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 1164256376.

Contact Information

Alexandra Haley Mackenzie, APRN, PMHNP-BC
1443 Hartford Ave,
Johnston, RI 02919-3224
(401) 273-8100
Not Available

Map and Direction




Provider's Profile

Full NameAlexandra Haley Mackenzie
GenderFemale
SpecialityNurse Practitioner
Experience2 Years
Location1443 Hartford Ave, Johnston, Rhode Island
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:
  • Alexandra Haley Mackenzie graduated from nursing school in 2024
  NPI Data:
  • NPI Number: 1164256376
  • Provider Enumeration Date: 08/29/2024
  • Last Update Date: 12/09/2025
  Medicare PECOS Information:
  • PECOS PAC ID: 3375029119
  • Enrollment ID: I20260112000505

Medical Identifiers

Medical identifiers for Alexandra Haley Mackenzie such as npi, medicare ID, medicare PIN, medicaid, etc.
IdentifierTypeStateIssuer
1164256376NPI-NPPES

Medical Taxonomies and Licenses

TaxonomyTypeLicense (State)Status
363LP0808XNurse Practitioner - Psychiatric/mental Health APRN04583 (Rhode Island)Primary
163W00000XRegistered Nurse RN62588 (Rhode Island)Secondary

Group Practice Association

Group Practice NameGroup PECOS PAC IDNo. of Members
Gateway Healthcare Inc771987490866

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. Alexandra Haley Mackenzie allows following entities to bill medicare on her behalf.
Entity NameGateway Healthcare Inc
Entity TypePart B Supplier - Clinic/group Practice
Entity IdentifiersNPI Number: 1821078932
PECOS PAC ID: 7719874908
Enrollment ID: O20040302001066

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. Alexandra Haley Mackenzie 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
Alexandra Haley Mackenzie, APRN, PMHNP-BC
15 La Salle Sq,
Providence, RI 02903-1814

Ph: (401) 444-6779		Alexandra Haley Mackenzie, APRN, PMHNP-BC
1443 Hartford Ave,
Johnston, RI 02919-3224

Ph: (401) 273-8100

Reviews and Comments


Nurse Practitioner Nurses in Johnston, RI

Dr. Stephanie Demello, NP
Nurse Practitioner
Medicare: Not Enrolled in Medicare
Practice Location: 1010 Plainfield St, Johnston, RI 02919
Phone: 774-400-4842    
Susan Patricia Mckenna, NP
Nurse Practitioner
Medicare: Medicare Enrolled
Practice Location: 1524 Atwood Ave Ste 220, Johnston, RI 02919
Phone: 401-272-1900    
Rachel Kelly,
Nurse Practitioner
Medicare: Not Enrolled in Medicare
Practice Location: 1239 Hartford Ave, Johnston, RI 02919
Phone: 401-272-7660    
Michael Gunson,
Nurse Practitioner
Medicare: Accepting Medicare Assignments
Practice Location: 11 Commerce Way Ste 5, Johnston, RI 02919
Phone: 401-606-2610    
Judith Adewuyi,
Nurse Practitioner
Medicare: Not Enrolled in Medicare
Practice Location: 1524 Atwood Ave, Johnston, RI 02919
Phone: 401-259-0340    
Stephanie Ann Connor, NP
Nurse Practitioner
Medicare: Medicare Enrolled
Practice Location: 1524 Atwood Ave Ste 220, Johnston, RI 02919
Phone: 401-272-1900    Fax: 401-453-3049
Mrs. Jessica Marie Dirocco, APRN, FNP-BC
Nurse Practitioner
Medicare: Accepting Medicare Assignments
Practice Location: 1524 Atwood Ave, Johnston, RI 02919
Phone: 401-274-2910    

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.