Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum Sole proprietor

Ms. Maryann Lisak, RN, MS, PNP

Psychiatric/Mental Health Nurse Practitioner in Burlington, VT · enumerated 2006.

Data current as of Jul 13, 2026 · sourced from CMS NPPES

National Provider Identifier

1790732899

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Registry record

Entity type Individual (Type 1)

Name Ms. Maryann Lisak

Credential RN, MS, PNP

Sex Female

Practice address Burlington, VT, 05401

Phone (802) 860-1928

Enumeration date May 27, 2006

Last updated in NPPES Jul 20, 2021

Street address withheld: NPPES sole-proprietor addresses can be home addresses. See our data policy.

Taxonomy & licenses

363LP0808X Psychiatric/Mental Health Nurse Practitioner Physician Assistants & Advanced Practice Nursing Providers · License 101.0019912 (VT) Primary

363LP0200X Pediatric Nurse Practitioner Physician Assistants & Advanced Practice Nursing Providers · License 1010019912 (VT) Secondary

RN · Registered Nurse: A nurse who completed an accredited nursing program and passed the NCLEX-RN licensure exam. About the RN credential

Other identifiers

Identifier	Type	State	Issuer
6703781	Medicaid	VT	-

What is an NPI number?

A National Provider Identifier (NPI) is a unique 10-digit number that CMS assigns to every U.S. healthcare provider and organization under HIPAA. Type 1 NPIs identify individual providers; Type 2 NPIs identify organizations. The NPI appears on insurance claims, prescriptions, and credentialing paperwork, and never changes, even if the provider moves or changes specialty.

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Frequently asked questions

Is this the official NPI registry?

No. NPI Portal is a private site built on public CMS NPPES data. The official registry is npiregistry.cms.hhs.gov, operated by CMS.

What specialty is Maryann Lisak?

Maryann Lisak is registered in NPPES with the primary taxonomy of Psychiatric/Mental Health Nurse Practitioner. The taxonomy code describes the provider's classification and area of specialization for claims and credentialing.

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Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2021-07-20.