Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum

Mark S Abate, M.D.

Hematology & Oncology Physician in Santa Barbara, CA · enumerated 2006 · practices at Santa Barbara Hematology Oncology Medical Group.

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

National Provider Identifier

1588778674

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Registry record

Entity type Individual (Type 1)

Name Mark S Abate

Credential M.D.

Sex Male

Practice address 540 W Pueblo St, Santa Barbara, CA, 93105

Phone (805) 879-0670

Enumeration date Aug 18, 2006

Last updated in NPPES Jan 28, 2019

Taxonomy & licenses

207RH0003X Hematology & Oncology Physician Allopathic & Osteopathic Physicians · License G55892 (CA) 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
00G558920	Medicaid	CA	-

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 Mark Abate?

Mark Abate is registered in NPPES with the primary taxonomy of Hematology & Oncology 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 2019-01-28.