Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum

Dr. C Keith Ozaki, MD

Vascular Surgery Physician in Boston, MA · enumerated 2006.

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

National Provider Identifier

1700999620

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Registry record

Entity type Individual (Type 1)

Name Dr. C Keith Ozaki

Credential MD

Sex Male

Practice address 75 Francis St, Boston, MA, 02115

Phone (857) 307-1920

Enumeration date Aug 16, 2006

Last updated in NPPES Jun 21, 2012

Taxonomy & licenses

2086S0129X Vascular Surgery Physician Allopathic & Osteopathic Physicians · License ME73442 (FL) Primary

2086S0129X Vascular Surgery Physician Allopathic & Osteopathic Physicians · License 75107 (MA) Secondary

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
252110500	Medicaid	FL	-

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 C Ozaki?

C Ozaki 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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Po-Shun Lee Pulmonary Disease Physician · Boston, MA NPI 1740284702 Cornelius Sullivan Anesthesiology Physician · Boston, MA NPI 1629074760 John Cadigan Cardiovascular Disease Physician · Boston, MA NPI 1497752620 Christie Lucente Physician Assistant · Boston, MA NPI 1164429056 Maria Perez Physician Assistant · Boston, MA NPI 1992705834 Todd Ellerin Infectious Disease Physician · Boston, MA NPI 1205837176 Jacqueline Tan Radiation Oncology Physician · Boston, MA NPI 1598766214 Vera Franklin Diagnostic Radiology Physician · Boston, MA NPI 1316939028

Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2012-06-21.