Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum

Mrs. Karen Diana Hershfeld, PA-C

Physician Assistant in Oakland, MD · enumerated 2006.

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

National Provider Identifier

1104837269

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Registry record

Entity type Individual (Type 1)

Name Mrs. Karen Diana Hershfeld

Credential PA-C

Sex Female

Practice address 251 N 4th St, Oakland, MD, 21550

Phone (301) 533-4000

Fax (301) 533-4208

Enumeration date Aug 11, 2006

Last updated in NPPES Sep 27, 2018

Taxonomy & licenses

363A00000X Physician Assistant Physician Assistants & Advanced Practice Nursing Providers · License C0001983 (MD) Primary

Other identifiers

Identifier	Type	State	Issuer
1104837269	Medicaid	WV	-

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 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 Karen Hershfeld?

Karen Hershfeld is registered in NPPES with the primary taxonomy of Physician Assistant. The taxonomy code describes the provider's classification and area of specialization for claims and credentialing.

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Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2018-09-27.