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

Dr. Christine L Cassel, MD

Dermatology Physician in Hummelstown, PA · enumerated 2006 · practices at Brownstone Dermatology Associates, LLC.

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

National Provider Identifier

1922062132

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Registry record

Entity type Individual (Type 1)

Name Dr. Christine L Cassel

Credential MD

Sex Female

Practice address Hummelstown, PA, 17036

Phone (717) 566-6633

Enumeration date Apr 14, 2006

Last updated in NPPES May 21, 2013

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

Taxonomy & licenses

207N00000X Dermatology Physician Allopathic & Osteopathic Physicians · License MD421184 (PA) Primary

MD · Doctor of Medicine: A physician who completed medical school (allopathic medicine), residency training, and state licensure. About the MD credential

Other identifiers

Identifier	Type	State	Issuer
0019488680001	Medicaid	PA	-

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 Christine Cassel?

The National Provider Identifier (NPI) for Christine Cassel is 1922062132, a Type 1 (individual) record in the CMS NPPES registry.

Where does Christine Cassel practice?

The practice location on file with NPPES is in Hummelstown, PA. Providers can have multiple locations; NPPES lists the primary practice address.

Other providers at this practice address

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Brownstone Dermatology Associates, LLC Dermatology Physician · Hummelstown, PA NPI 1407881683

Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2013-05-21.