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

Mary Margaret Pieroni, OT-A

Q: What is the NPI number for Mary Pieroni?

The National Provider Identifier (NPI) for Mary Pieroni is 1881818078, a Type 1 (individual) record in the CMS NPPES registry.

Occupational Therapy Assistant in Lake Village, AR · enumerated 2007 · practices at Occupational Therapy Services Inc..

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

National Provider Identifier

1881818078

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Registry record

Entity type Individual (Type 1)

Name Mary Margaret Pieroni

Credential OT-A

Sex Female

Practice address Lake Village, AR, 71653

Phone (870) 265-3950

Fax (870) 265-2525

Enumeration date Apr 12, 2007

Last updated in NPPES Nov 24, 2020

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

Taxonomy & licenses

174400000X Specialist Other Service Providers · License OTA331 (AR) Secondary

224Z00000X Occupational Therapy Assistant Respiratory, Developmental, Rehabilitative and Restorative Service Providers · License OTA331 (AR) Primary

Other identifiers

Identifier	Type	State	Issuer
138966721	Medicaid	AR	-

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 Mary Pieroni?

The National Provider Identifier (NPI) for Mary Pieroni is 1881818078, a Type 1 (individual) record in the CMS NPPES registry.

Where does Mary Pieroni practice?

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

Other providers at this practice address

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Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2020-11-24.