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

Dr. Lynn Launa Duffy, PSY.D., LCPC, NCC,

Mental Health Counselor in Pocomoke City, MD · enumerated 2006.

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

National Provider Identifier

1902909823

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Registry record

Entity type Individual (Type 1)

Name Dr. Lynn Launa Duffy

Credential PSY.D., LCPC, NCC,

Sex Female

Practice address Pocomoke City, MD, 21851

Phone (410) 957-4200

Enumeration date Sep 6, 2006

Last updated in NPPES Jan 3, 2023

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

Taxonomy & licenses

101YM0800X Mental Health Counselor Behavioral Health & Social Service Providers · License LC1446 (MD) Primary

PSYD · Doctor of Psychology: A clinical doctorate in psychology focused on professional practice. About the PSYD credential

Other identifiers

Identifier	Type	State	Issuer
352205119	Other	MD	APS
4100926	Other	MD	MAMSI/MDIPA/OPT.CH/ALLIAN
M5050001	Other	DC	DC NETWORK BC/BS
352205119	Other	MD	TRICARE
352205119	Other	MD	UNITED BEHAVIORAL HEALTH
352205119	Other	MD	AETNA
401784600	Medicaid	MD	-
560198-000	Other	MD	MAGELLAN
KFS1	Other	MD	CAREFIRST BC/BS

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.

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Frequently asked questions

Is NPI 1902909823 active?

Yes, as of the latest NPPES snapshot, NPI 1902909823 is active (record last updated 2023-01-03).

How do I verify Lynn Duffy's NPI record?

Cross-check NPI 1902909823 against the official CMS registry at npiregistry.cms.hhs.gov. This page mirrors the same public NPPES data with a monthly snapshot.

Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2023-01-03.