Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum

Dr. William John Hammerash Jr., M.D.

Family Medicine Physician in Woodbine, MD · enumerated 2005 · practices at Family Medical Associates, LLC.

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

National Provider Identifier

1033110390

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Registry record

Entity type Individual (Type 1)

Name Dr. William John Hammerash Jr.

Credential M.D.

Sex Male

Practice address 708c Lisbon Center Dr, Woodbine, MD, 21797

Phone (410) 489-7777

Fax (410) 795-8920

Enumeration date Aug 9, 2005

Last updated in NPPES Jul 8, 2007

Taxonomy & licenses

207Q00000X Family Medicine Physician Allopathic & Osteopathic Physicians · License D0055926 (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 is the NPI number for William Hammerash?

The National Provider Identifier (NPI) for William Hammerash is 1033110390, a Type 1 (individual) record in the CMS NPPES registry.

Where does William Hammerash practice?

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

Other providers at this practice address

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Family Medical Associates, LLC Family Medicine Physician · Woodbine, MD NPI 1225226046

Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2007-07-08.