Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum

Ann Hwalek, D.O.

Surgery Physician in Washington, DC · enumerated 2012.

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

National Provider Identifier

1073889887

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Registry record

Entity type Individual (Type 1)

Name Ann Hwalek

Credential D.O.

Sex Female

Practice address 3800 Reservoir Rd Nw, Washington, DC, 20007

Phone (202) 444-6305

Enumeration date Mar 26, 2012

Last updated in NPPES Oct 12, 2021

Taxonomy & licenses

208600000X Surgery Physician Allopathic & Osteopathic Physicians · License DO210001283 (DC) Secondary

208600000X Surgery Physician Allopathic & Osteopathic Physicians · License 125.062224 (IL) 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

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 Ann Hwalek?

Ann Hwalek is registered in NPPES with the primary taxonomy of Surgery 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 2021-10-12.