Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum

Mariah Carroll Hallbilsback, MA

Clinical Social Worker in Sunnyside, NY · enumerated 2018.

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

National Provider Identifier

1912489204

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Registry record

Entity type Individual (Type 1)

Name Mariah Carroll Hallbilsback

Credential MA

Sex Female

Practice address 4130 46th St 4b, Sunnyside, NY, 11104

Phone (508) 561-4247

Enumeration date Sep 3, 2018

Last updated in NPPES Sep 28, 2023

Taxonomy & licenses

1041C0700X Clinical Social Worker Behavioral Health & Social Service Providers · License 095251-01 (NY) Primary

101Y00000X Counselor Behavioral Health & Social Service Providers Secondary

104100000X Social Worker Behavioral Health & Social Service Providers · License 107600-01 (NY) Secondary

Other identifiers

Identifier	Type	State	Issuer
095251-01	Other	NY	LCSW
107600-01	Other	NY	LMSW

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 is the NPI number for Mariah Hallbilsback?

The National Provider Identifier (NPI) for Mariah Hallbilsback is 1912489204, a Type 1 (individual) record in the CMS NPPES registry.

Where does Mariah Hallbilsback practice?

The practice location on file with NPPES is in Sunnyside, NY. Providers can have multiple locations; NPPES lists the primary practice address.

Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2023-09-28.