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

Ms. Mariaelena Semko, LPC, NCC

Professional Counselor in Tucson, AZ · enumerated 2018.

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

National Provider Identifier

1245739788

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Registry record

Entity type Individual (Type 1)

Name Ms. Mariaelena Semko

Credential LPC, NCC

Sex Female

Practice address Tucson, AZ, 85711

Phone (520) 661-3872

Fax (520) 618-5833

Enumeration date Feb 11, 2018

Last updated in NPPES Feb 11, 2018

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

Taxonomy & licenses

101YP2500X Professional Counselor Behavioral Health & Social Service Providers · License LPC-10754 (AZ) Primary

LPC · Licensed Professional Counselor: A licensed mental-health counselor providing psychotherapy. About the LPC credential

Other identifiers

Identifier	Type	State	Issuer
LPC-10754	Other	AZ	BEHAVIORAL HEALTH COUNSELING

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.

Read the full guide → Validate an NPI →

Frequently asked questions

What specialty is Mariaelena Semko?

Mariaelena Semko is registered in NPPES with the primary taxonomy of Professional Counselor. The taxonomy code describes the provider's classification and area of specialization for claims and credentialing.

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.

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Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2018-02-11.