Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum
Matthew Aaron Lasslo
Counselor in Page, AZ · enumerated 2020.
Data current as of Jul 13, 2026 · sourced from CMS NPPES
National Provider Identifier
1003426545
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Registry record
Entity type Individual (Type 1)
Name Matthew Aaron Lasslo
Sex Male
Practice address 463 S Lake Powell Blvd, Page, AZ, 86040
Phone (928) 645-5113
Fax (928) 645-3254
Enumeration date Aug 7, 2020
Last updated in NPPES Aug 7, 2020
Taxonomy & licenses
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.
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 Matthew Lasslo?
Matthew Lasslo is registered in NPPES with the primary taxonomy of Counselor. The taxonomy code describes the provider's classification and area of specialization for claims and credentialing.
Other providers at this practice address
Browse all → Michael Demangone Family Medicine Physician · Page, AZ NPI 1841294378 Christopher Linskey Psychiatry Physician · Page, AZ NPI 1790775757 Encompass Health Services Incorporated Preferred Provider Organization · Page, AZ NPI 1760453054 Scott Sadler Surgical Physician Assistant · Page, AZ NPI 1386612265 Ralph Chester Psychiatry Physician · Page, AZ NPI 1467415620 Beverly Horton Professional Counselor · Page, AZ NPI 1275598682 Ronald Macdonald Professional Counselor · Page, AZ NPI 1871558361 Cresfield Moody Family Nurse Practitioner · Page, AZ NPI 1962468678
Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2020-08-07.