Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum

Christopher Blackstock, M.D., PH.D.

Vascular Surgery Physician in Gretna, LA · enumerated 2017 · practices at Ochsner Clinic LLC.

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

National Provider Identifier

1235665308

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Registry record

Entity type Individual (Type 1)

Name Christopher Blackstock

Credential M.D., PH.D.

Sex Male

Practice address 120 Ochsner Blvd, Gretna, LA, 70056

Phone (504) 595-8020

Fax (504) 391-8707

Enumeration date May 10, 2017

Last updated in NPPES Nov 21, 2022

Taxonomy & licenses

2086S0129X Vascular Surgery Physician Allopathic & Osteopathic Physicians · License MT213385 (PA) Secondary

2086S0129X Vascular Surgery Physician Allopathic & Osteopathic Physicians · License 333584 (LA) 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
MT213385	Other	PA	MEDICAL LICENSE

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 specialty is Christopher Blackstock?

Christopher Blackstock is registered in NPPES with the primary taxonomy of Vascular Surgery Physician. The taxonomy code describes the provider's classification and area of specialization for claims and credentialing.

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.

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Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2022-11-21.