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

Dr. John E Muscalus Jr., DO

Family Medicine Physician in Hummelstown, PA · enumerated 2006 · practices at Dr J Thomas Do Mba Family Practice Pllc.

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

National Provider Identifier

1710919774

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Registry record

Entity type Individual (Type 1)
Name Dr. John E Muscalus Jr.
Credential DO
Sex Male
Practice address Hummelstown, PA, 17036
Phone (717) 566-3796
Fax (717) 566-0576
Enumeration date Jul 7, 2006
Last updated in NPPES Jun 25, 2008

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

Taxonomy & licenses

207Q00000X Family Medicine Physician Allopathic & Osteopathic Physicians · License OS 005054 L (PA) Primary
DO · Doctor of Osteopathic Medicine: A fully licensed physician trained in osteopathic medical schools, with the same practice rights as an MD. About the DO credential

Other identifiers

Identifier Type State Issuer
1710919774 Other PA NPI

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

What is the NPI number for John Muscalus?
The National Provider Identifier (NPI) for John Muscalus is 1710919774, a Type 1 (individual) record in the CMS NPPES registry.
Where does John Muscalus 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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Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2008-06-25.