Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum

Mrs. Mary Jill Grogg, M.S.,C.C.C.,S.L.P.

Q: What is the NPI number for Mary Grogg?

The National Provider Identifier (NPI) for Mary Grogg is 1538284690, a Type 1 (individual) record in the CMS NPPES registry.

Speech-Language Pathologist in Reading, PA · enumerated 2007.

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

National Provider Identifier

1538284690

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Registry record

Entity type Individual (Type 1)

Name Mrs. Mary Jill Grogg

Credential M.S.,C.C.C.,S.L.P.

Sex Female

Practice address 5501 Perkiomen Ave, Reading, PA, 19606

Phone (610) 779-0600

Fax (610) 370-2185

Enumeration date Mar 20, 2007

Last updated in NPPES Jul 8, 2007

Taxonomy & licenses

235Z00000X Speech-Language Pathologist Speech, Language and Hearing Service Providers · License SL-003846-L (PA) Primary

SLP · Speech-Language Pathologist: A licensed clinician treating speech, language, and swallowing disorders. About the SLP credential

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 Grogg?

The National Provider Identifier (NPI) for Mary Grogg is 1538284690, a Type 1 (individual) record in the CMS NPPES registry.

Where does Mary Grogg practice?

The practice location on file with NPPES is in Reading, PA. 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 2007-07-08.