NPI Portal NPI Lookup & Verification

Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum

Dr. Jennifer Lopkin Offer, M.D.

Pediatrics Physician in Silver Spring, MD · enumerated 2007 · practices at Legacy&Gas, LLC.

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

National Provider Identifier

1336287374

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Registry record

Entity type Individual (Type 1)
Name Dr. Jennifer Lopkin Offer
Credential M.D.
Sex Female
Practice address Holy Cross Hospital, 1500 Forest Glen Rd, Silver Spring, MD, 20910
Phone (301) 754-7126
Enumeration date Feb 2, 2007
Last updated in NPPES Jun 22, 2021

Taxonomy & licenses

208000000X Pediatrics Physician Allopathic & Osteopathic Physicians · License MD31814 (DC) Secondary
208000000X Pediatrics Physician Allopathic & Osteopathic Physicians · License D57933 (MD) 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.

Read the full guide → Validate an NPI →

Frequently asked questions

What specialty is Jennifer Offer?
Jennifer Offer is registered in NPPES with the primary taxonomy of Pediatrics Physician. The taxonomy code describes the provider's classification and area of specialization for claims and credentialing.
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.

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Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2021-06-22.