Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum

Dr. Jessica Young Won Hahm, O.D.

Optometrist in Havre De Grace, MD · enumerated 2019.

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

National Provider Identifier

1841858065

Verified

See something wrong? Report a correction

Registry record

Entity type Individual (Type 1)

Name Dr. Jessica Young Won Hahm

Credential O.D.

Sex Female

Practice address 2023 Pulaski Hwy, Havre De Grace, MD, 21078

Phone (410) 939-6477

Enumeration date Jun 3, 2019

Last updated in NPPES Jun 3, 2019

Taxonomy & licenses

152W00000X Optometrist Eye and Vision Services Providers · License TA2643 (MD) Primary

OD · Doctor of Optometry: A licensed optometrist providing primary vision care, eye exams, and corrective lenses. About the OD 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

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 Jessica Hahm?

Jessica Hahm is registered in NPPES with the primary taxonomy of Optometrist. The taxonomy code describes the provider's classification and area of specialization for claims and credentialing.

Other providers at this practice address

Browse all →

Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2019-06-03.