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

Dr. Karyn Michelle Felder, PHD

Professional Counselor in Burtonsville, MD · enumerated 2007.

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

National Provider Identifier

1245420611

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Registry record

Entity type Individual (Type 1)

Name Dr. Karyn Michelle Felder

Credential PHD

Sex Female

Practice address Burtonsville, MD, 20866

Phone (301) 421-0100

Fax (301) 421-1763

Enumeration date Jul 31, 2007

Last updated in NPPES Jul 31, 2007

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

Taxonomy & licenses

101YP2500X Professional Counselor Behavioral Health & Social Service Providers · License LC1914 (MD) Primary

PHD · Doctor of Philosophy: A doctoral degree; in healthcare often held by clinical psychologists and researchers. About the PHD 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.

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Frequently asked questions

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.

What specialty is Karyn Felder?

Karyn Felder is registered in NPPES with the primary taxonomy of Professional Counselor. The taxonomy code describes the provider's classification and area of specialization for claims and credentialing.

Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2007-07-31.