Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum

Dr. Hilarie Claire Tomasiewicz, M.D./PH.D.

Neurological Surgery Physician in Marietta, GA · enumerated 2012.

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

National Provider Identifier

1841557444

Verified

See something wrong? Report a correction

Registry record

Entity type Individual (Type 1)

Name Dr. Hilarie Claire Tomasiewicz

Credential M.D./PH.D.

Sex Female

Practice address 61 Whitcher St Ne Ste 3110, Marietta, GA, 30060

Phone (770) 422-2326

Fax (770) 422-7231

Enumeration date Apr 19, 2012

Last updated in NPPES Jul 11, 2023

Taxonomy & licenses

207T00000X Neurological Surgery Physician Allopathic & Osteopathic Physicians · License 306979 (NY) Secondary

207T00000X Neurological Surgery Physician Allopathic & Osteopathic Physicians · License 82673 (GA) 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 Hilarie Tomasiewicz?

The National Provider Identifier (NPI) for Hilarie Tomasiewicz is 1841557444, a Type 1 (individual) record in the CMS NPPES registry.

Where does Hilarie Tomasiewicz practice?

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

Other providers at this practice address

Browse all →

Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2023-07-11.