Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum

Marianne K Schallmo, ANP

Nurse Practitioner in Merrillville, IN · enumerated 2006.

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

National Provider Identifier

1679508410

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Registry record

Entity type Individual (Type 1)

Name Marianne K Schallmo

Credential ANP

Sex Female

Practice address 8895 Broadway, Merrillville, IN, 46410

Phone (219) 738-2081

Fax (219) 736-4658

Enumeration date Jul 11, 2006

Last updated in NPPES Jan 20, 2010

Taxonomy & licenses

363L00000X Nurse Practitioner Physician Assistants & Advanced Practice Nursing Providers · License 28115564A (IN) Primary

364S00000X Clinical Nurse Specialist Physician Assistants & Advanced Practice Nursing Providers · License 28115564A (IN) Secondary

Other identifiers

Identifier	Type	State	Issuer
200805890	Medicaid	IN	-

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 Marianne Schallmo?

Marianne Schallmo is registered in NPPES with the primary taxonomy of Nurse Practitioner. 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 2010-01-20.