Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum

Jeffrey Mathias Mufson, M.D.

Psychiatry Physician in Lancaster, PA · enumerated 2013 · practices at Lancaster Behavioral Health Hospital LLC.

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

National Provider Identifier

1255778155

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Registry record

Entity type Individual (Type 1)

Name Jeffrey Mathias Mufson

Credential M.D.

Sex Male

Practice address 333 Harrisburg Ave, Lancaster, PA, 17603

Phone (717) 740-4171

Fax (717) 740-4063

Enumeration date May 31, 2013

Last updated in NPPES Jun 15, 2022

Taxonomy & licenses

207R00000X Internal Medicine Physician Allopathic & Osteopathic Physicians · License MT204483 (PA) Secondary

390200000X Student in an Organized Health Care Education/Training Program Student, Health Care Secondary

2084P0800X Psychiatry Physician Allopathic & Osteopathic Physicians · License MD469918 (PA) Primary

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

Jeffrey Mufson is registered in NPPES with the primary taxonomy of Psychiatry Physician. 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 2022-06-15.