Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum

Natalie Annabelle Ciomek, MD

Anatomic Pathology & Clinical Pathology Physician in Boston, MA · enumerated 2011.

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

National Provider Identifier

1174822738

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Registry record

Entity type Individual (Type 1)

Name Natalie Annabelle Ciomek

Credential MD

Sex Female

Practice address 670 Albany Street, Suite 304, Boston, MA, 02118

Phone (617) 414-4291

Fax (617) 414-5315

Enumeration date Mar 22, 2011

Last updated in NPPES Jun 24, 2025

Taxonomy & licenses

207ZH0000X Hematology (Pathology) Physician Allopathic & Osteopathic Physicians · License 270668 (MA) Secondary

207ZP0102X Anatomic Pathology & Clinical Pathology Physician Allopathic & Osteopathic Physicians · License 270668 (MA) Primary

MD · Doctor of Medicine: A physician who completed medical school (allopathic medicine), residency training, and state licensure. About the MD credential

Other identifiers

Identifier	Type	State	Issuer
110124273A	Medicaid	MA	-

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 Natalie Ciomek?

The National Provider Identifier (NPI) for Natalie Ciomek is 1174822738, a Type 1 (individual) record in the CMS NPPES registry.

Where does Natalie Ciomek practice?

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

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Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2025-06-24.