Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum

Prof. Nan B Ratner, ED.D., SLP

Speech-Language Pathologist in College Park, MD · enumerated 2009.

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

National Provider Identifier

1063655157

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Registry record

Entity type Individual (Type 1)

Name Prof. Nan B Ratner

Credential ED.D., SLP

Sex Female

Practice address Dept. of Hearing & Speech Sciences 0100 Lefrak Hall, University of Maryland, College Park, MD, 20742

Phone (301) 405-4217

Fax (301) 314-2023

Enumeration date Apr 20, 2009

Last updated in NPPES Apr 20, 2009

Taxonomy & licenses

235Z00000X Speech-Language Pathologist Speech, Language and Hearing Service Providers · License 01338 (MD) 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

Is NPI 1063655157 active?

Yes, as of the latest NPPES snapshot, NPI 1063655157 is active (record last updated 2009-04-20).

How do I verify Nan Ratner's NPI record?

Cross-check NPI 1063655157 against the official CMS registry at npiregistry.cms.hhs.gov. This page mirrors the same public NPPES data with a monthly snapshot.

Other providers at this practice address

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Colleen Worthington Speech-Language Pathologist · College Park, MD NPI 1477796902

Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2009-04-20.