Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum

Dr. Hilary Cheslack Brynildsen, M.D.

Endocrinology, Diabetes & Metabolism Physician in Greenwood, SC · enumerated 2005.

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

National Provider Identifier

1639152408

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Registry record

Entity type Individual (Type 1)

Name Dr. Hilary Cheslack Brynildsen

Credential M.D.

Sex Female

Practice address 115 Overland Dr, Greenwood, SC, 29646

Phone (864) 227-6641

Fax (864) 227-3953

Enumeration date Nov 24, 2005

Last updated in NPPES Jun 9, 2014

Taxonomy & licenses

207RE0101X Endocrinology, Diabetes & Metabolism Physician Allopathic & Osteopathic Physicians · License 25MA04177000 (NJ) Secondary

207RE0101X Endocrinology, Diabetes & Metabolism Physician Allopathic & Osteopathic Physicians · License 34246 (SC) 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
342463	Medicaid	SC	-

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 Hilary Brynildsen?

The National Provider Identifier (NPI) for Hilary Brynildsen is 1639152408, a Type 1 (individual) record in the CMS NPPES registry.

Where does Hilary Brynildsen practice?

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

Other providers at this practice address

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Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2014-06-09.